light9: rgbled/Adafruit_NeoPixel/Adafruit

annotate rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp @ 2143:b27a3a8f9ecb

it's 2023

author	drewp@bigasterisk.com
date	Wed, 17 May 2023 18:52:11 -0700
parents	ef4ae15f2661
children

rev	line source
1231 ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1 /*-------------------------------------------------------------------------
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	2 Arduino library to control a wide variety of WS2811- and WS2812-based RGB
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	3 LED devices such as Adafruit FLORA RGB Smart Pixels and NeoPixel strips.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	4 Currently handles 400 and 800 KHz bitstreams on 8, 12 and 16 MHz ATmega
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	5 MCUs, with LEDs wired for RGB or GRB color order. 8 MHz MCUs provide
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	6 output on PORTB and PORTD, while 16 MHz chips can handle most output pins
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	7 (possible exception with upper PORT registers on the Arduino Mega).
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	8
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	9 Written by Phil Burgess / Paint Your Dragon for Adafruit Industries,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	10 contributions by PJRC and other members of the open source community.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	11
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	12 Adafruit invests time and resources providing this open source code,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	13 please support Adafruit and open-source hardware by purchasing products
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	14 from Adafruit!
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	15
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	16 -------------------------------------------------------------------------
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	17 This file is part of the Adafruit NeoPixel library.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	18
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	19 NeoPixel is free software: you can redistribute it and/or modify
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	20 it under the terms of the GNU Lesser General Public License as
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	21 published by the Free Software Foundation, either version 3 of
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	22 the License, or (at your option) any later version.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	23
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	24 NeoPixel is distributed in the hope that it will be useful,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	25 but WITHOUT ANY WARRANTY; without even the implied warranty of
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	27 GNU Lesser General Public License for more details.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	28
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	29 You should have received a copy of the GNU Lesser General Public
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	30 License along with NeoPixel. If not, see
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	31 <http://www.gnu.org/licenses/>.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	32 -------------------------------------------------------------------------*/
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	33
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	34 #include "Adafruit_NeoPixel.h"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	35
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	36 Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, uint8_t p, uint8_t t) :
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	37 numLEDs(n), numBytes(n * 3), pin(p), brightness(0),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	38 pixels(NULL), type(t), endTime(0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	39 #ifdef __AVR__
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	40 ,port(portOutputRegister(digitalPinToPort(p))),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	41 pinMask(digitalPinToBitMask(p))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	42 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	43 {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	44 if((pixels = (uint8_t *)malloc(numBytes))) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	45 memset(pixels, 0, numBytes);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	46 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	47 if(t & NEO_GRB) { // GRB vs RGB; might add others if needed
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	48 rOffset = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	49 gOffset = 0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	50 bOffset = 2;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	51 } else if (t & NEO_BRG) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	52 rOffset = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	53 gOffset = 2;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	54 bOffset = 0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	55 } else {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	56 rOffset = 0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	57 gOffset = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	58 bOffset = 2;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	59 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	60
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	61 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	62
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	63 Adafruit_NeoPixel::~Adafruit_NeoPixel() {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	64 if(pixels) free(pixels);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	65 pinMode(pin, INPUT);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	66 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	67
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	68 void Adafruit_NeoPixel::begin(void) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	69 pinMode(pin, OUTPUT);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	70 digitalWrite(pin, LOW);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	71 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	72
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	73 void Adafruit_NeoPixel::show(void) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	74
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	75 if(!pixels) return;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	76
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	77 // Data latch = 50+ microsecond pause in the output stream. Rather than
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	78 // put a delay at the end of the function, the ending time is noted and
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	79 // the function will simply hold off (if needed) on issuing the
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	80 // subsequent round of data until the latch time has elapsed. This
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	81 // allows the mainline code to start generating the next frame of data
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	82 // rather than stalling for the latch.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	83 while(!canShow());
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	84 // endTime is a private member (rather than global var) so that mutliple
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	85 // instances on different pins can be quickly issued in succession (each
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	86 // instance doesn't delay the next).
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	87
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	88 // In order to make this code runtime-configurable to work with any pin,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	89 // SBI/CBI instructions are eschewed in favor of full PORT writes via the
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	90 // OUT or ST instructions. It relies on two facts: that peripheral
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	91 // functions (such as PWM) take precedence on output pins, so our PORT-
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	92 // wide writes won't interfere, and that interrupts are globally disabled
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	93 // while data is being issued to the LEDs, so no other code will be
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	94 // accessing the PORT. The code takes an initial 'snapshot' of the PORT
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	95 // state, computes 'pin high' and 'pin low' values, and writes these back
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	96 // to the PORT register as needed.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	97
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	98 noInterrupts(); // Need 100% focus on instruction timing
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	99
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	100 #ifdef __AVR__
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	101
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	102 volatile uint16_t
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	103 i = numBytes; // Loop counter
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	104 volatile uint8_t
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	105 *ptr = pixels, // Pointer to next byte
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	106 b = *ptr++, // Current byte value
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	107 hi, // PORT w/output bit set high
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	108 lo; // PORT w/output bit set low
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	109
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	110 // Hand-tuned assembly code issues data to the LED drivers at a specific
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	111 // rate. There's separate code for different CPU speeds (8, 12, 16 MHz)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	112 // for both the WS2811 (400 KHz) and WS2812 (800 KHz) drivers. The
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	113 // datastream timing for the LED drivers allows a little wiggle room each
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	114 // way (listed in the datasheets), so the conditions for compiling each
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	115 // case are set up for a range of frequencies rather than just the exact
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	116 // 8, 12 or 16 MHz values, permitting use with some close-but-not-spot-on
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	117 // devices (e.g. 16.5 MHz DigiSpark). The ranges were arrived at based
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	118 // on the datasheet figures and have not been extensively tested outside
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	119 // the canonical 8/12/16 MHz speeds; there's no guarantee these will work
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	120 // close to the extremes (or possibly they could be pushed further).
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	121 // Keep in mind only one CPU speed case actually gets compiled; the
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	122 // resulting program isn't as massive as it might look from source here.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	123
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	124 // 8 MHz(ish) AVR ---------------------------------------------------------
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	125 #if (F_CPU >= 7400000UL) && (F_CPU <= 9500000UL)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	126
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	127 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	128 if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	129 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	130
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	131 volatile uint8_t n1, n2 = 0; // First, next bits out
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	132
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	133 // Squeezing an 800 KHz stream out of an 8 MHz chip requires code
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	134 // specific to each PORT register. At present this is only written
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	135 // to work with pins on PORTD or PORTB, the most likely use case --
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	136 // this covers all the pins on the Adafruit Flora and the bulk of
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	137 // digital pins on the Arduino Pro 8 MHz (keep in mind, this code
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	138 // doesn't even get compiled for 16 MHz boards like the Uno, Mega,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	139 // Leonardo, etc., so don't bother extending this out of hand).
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	140 // Additional PORTs could be added if you really need them, just
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	141 // duplicate the else and loop and change the PORT. Each add'l
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	142 // PORT will require about 150(ish) bytes of program space.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	143
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	144 // 10 instruction clocks per bit: HHxxxxxLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	145 // OUT instructions: ^ ^ ^ (T=0,2,7)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	146
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	147 #ifdef PORTD // PORTD isn't present on ATtiny85, etc.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	148
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	149 if(port == &PORTD) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	150
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	151 hi = PORTD \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	152 lo = PORTD & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	153 n1 = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	154 if(b & 0x80) n1 = hi;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	155
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	156 // Dirty trick: RJMPs proceeding to the next instruction are used
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	157 // to delay two clock cycles in one instruction word (rather than
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	158 // using two NOPs). This was necessary in order to squeeze the
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	159 // loop down to exactly 64 words -- the maximum possible for a
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	160 // relative branch.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	161
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	162 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	163 "headD:" "\n\t" // Clk Pseudocode
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	164 // Bit 7:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	165 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	166 "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	167 "out %[port] , %[n1]" "\n\t" // 1 PORT = n1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	168 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	169 "sbrc %[byte] , 6" "\n\t" // 1-2 if(b & 0x40)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	170 "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	171 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	172 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	173 // Bit 6:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	174 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	175 "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	176 "out %[port] , %[n2]" "\n\t" // 1 PORT = n2
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	177 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	178 "sbrc %[byte] , 5" "\n\t" // 1-2 if(b & 0x20)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	179 "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	180 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	181 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	182 // Bit 5:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	183 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	184 "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	185 "out %[port] , %[n1]" "\n\t" // 1 PORT = n1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	186 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	187 "sbrc %[byte] , 4" "\n\t" // 1-2 if(b & 0x10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	188 "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	189 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	190 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	191 // Bit 4:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	192 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	193 "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	194 "out %[port] , %[n2]" "\n\t" // 1 PORT = n2
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	195 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	196 "sbrc %[byte] , 3" "\n\t" // 1-2 if(b & 0x08)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	197 "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	198 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	199 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	200 // Bit 3:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	201 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	202 "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	203 "out %[port] , %[n1]" "\n\t" // 1 PORT = n1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	204 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	205 "sbrc %[byte] , 2" "\n\t" // 1-2 if(b & 0x04)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	206 "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	207 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	208 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	209 // Bit 2:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	210 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	211 "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	212 "out %[port] , %[n2]" "\n\t" // 1 PORT = n2
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	213 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	214 "sbrc %[byte] , 1" "\n\t" // 1-2 if(b & 0x02)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	215 "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	216 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	217 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	218 // Bit 1:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	219 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	220 "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	221 "out %[port] , %[n1]" "\n\t" // 1 PORT = n1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	222 "rjmp .+0" "\n\t" // 2 nop nop
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	223 "sbrc %[byte] , 0" "\n\t" // 1-2 if(b & 0x01)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	224 "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	225 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	226 "sbiw %[count], 1" "\n\t" // 2 i-- (don't act on Z flag yet)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	227 // Bit 0:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	228 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	229 "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	230 "out %[port] , %[n2]" "\n\t" // 1 PORT = n2
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	231 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	232 "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 0x80)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	233 "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	234 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	235 "brne headD" "\n" // 2 while(i) (Z flag set above)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	236 : [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	237 [n1] "+r" (n1),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	238 [n2] "+r" (n2),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	239 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	240 : [port] "I" (_SFR_IO_ADDR(PORTD)),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	241 [ptr] "e" (ptr),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	242 [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	243 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	244
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	245 } else if(port == &PORTB) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	246
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	247 #endif // PORTD
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	248
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	249 // Same as above, just switched to PORTB and stripped of comments.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	250 hi = PORTB \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	251 lo = PORTB & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	252 n1 = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	253 if(b & 0x80) n1 = hi;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	254
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	255 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	256 "headB:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	257 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	258 "mov %[n2] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	259 "out %[port] , %[n1]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	260 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	261 "sbrc %[byte] , 6" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	262 "mov %[n2] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	263 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	264 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	265 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	266 "mov %[n1] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	267 "out %[port] , %[n2]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	268 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	269 "sbrc %[byte] , 5" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	270 "mov %[n1] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	271 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	272 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	273 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	274 "mov %[n2] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	275 "out %[port] , %[n1]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	276 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	277 "sbrc %[byte] , 4" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	278 "mov %[n2] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	279 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	280 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	281 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	282 "mov %[n1] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	283 "out %[port] , %[n2]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	284 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	285 "sbrc %[byte] , 3" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	286 "mov %[n1] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	287 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	288 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	289 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	290 "mov %[n2] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	291 "out %[port] , %[n1]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	292 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	293 "sbrc %[byte] , 2" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	294 "mov %[n2] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	295 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	296 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	297 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	298 "mov %[n1] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	299 "out %[port] , %[n2]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	300 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	301 "sbrc %[byte] , 1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	302 "mov %[n1] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	303 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	304 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	305 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	306 "mov %[n2] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	307 "out %[port] , %[n1]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	308 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	309 "sbrc %[byte] , 0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	310 "mov %[n2] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	311 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	312 "sbiw %[count], 1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	313 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	314 "mov %[n1] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	315 "out %[port] , %[n2]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	316 "ld %[byte] , %a[ptr]+" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	317 "sbrc %[byte] , 7" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	318 "mov %[n1] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	319 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	320 "brne headB" "\n"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	321 : [byte] "+r" (b), [n1] "+r" (n1), [n2] "+r" (n2), [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	322 : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	323 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	324
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	325 #ifdef PORTD
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	326 } // endif PORTB
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	327 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	328
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	329 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	330 } else { // end 800 KHz, do 400 KHz
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	331
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	332 // Timing is more relaxed; unrolling the inner loop for each bit is
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	333 // not necessary. Still using the peculiar RJMPs as 2X NOPs, not out
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	334 // of need but just to trim the code size down a little.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	335 // This 400-KHz-datastream-on-8-MHz-CPU code is not quite identical
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	336 // to the 800-on-16 code later -- the hi/lo timing between WS2811 and
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	337 // WS2812 is not simply a 2:1 scale!
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	338
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	339 // 20 inst. clocks per bit: HHHHxxxxxxLLLLLLLLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	340 // ST instructions: ^ ^ ^ (T=0,4,10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	341
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	342 volatile uint8_t next, bit;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	343
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	344 hi = *port \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	345 lo = *port & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	346 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	347 bit = 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	348
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	349 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	350 "head20:" "\n\t" // Clk Pseudocode (T = 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	351 "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	352 "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	353 "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	354 "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 6)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	355 "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 7)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	356 "dec %[bit]" "\n\t" // 1 bit-- (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	357 "breq nextbyte20" "\n\t" // 1-2 if(bit == 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	358 "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	359 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 12)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	360 "rjmp .+0" "\n\t" // 2 nop nop (T = 14)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	361 "rjmp .+0" "\n\t" // 2 nop nop (T = 16)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	362 "rjmp .+0" "\n\t" // 2 nop nop (T = 18)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	363 "rjmp head20" "\n\t" // 2 -> head20 (next bit out)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	364 "nextbyte20:" "\n\t" // (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	365 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 12)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	366 "nop" "\n\t" // 1 nop (T = 13)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	367 "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 14)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	368 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 16)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	369 "sbiw %[count], 1" "\n\t" // 2 i-- (T = 18)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	370 "brne head20" "\n" // 2 if(i != 0) -> (next byte)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	371 : [port] "+e" (port),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	372 [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	373 [bit] "+r" (bit),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	374 [next] "+r" (next),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	375 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	376 : [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	377 [lo] "r" (lo),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	378 [ptr] "e" (ptr));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	379 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	380 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	381
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	382 // 12 MHz(ish) AVR --------------------------------------------------------
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	383 #elif (F_CPU >= 11100000UL) && (F_CPU <= 14300000UL)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	384
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	385 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	386 if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	387 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	388
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	389 // In the 12 MHz case, an optimized 800 KHz datastream (no dead time
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	390 // between bytes) requires a PORT-specific loop similar to the 8 MHz
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	391 // code (but a little more relaxed in this case).
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	392
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	393 // 15 instruction clocks per bit: HHHHxxxxxxLLLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	394 // OUT instructions: ^ ^ ^ (T=0,4,10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	395
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	396 volatile uint8_t next;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	397
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	398 #ifdef PORTD
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	399
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	400 if(port == &PORTD) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	401
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	402 hi = PORTD \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	403 lo = PORTD & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	404 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	405 if(b & 0x80) next = hi;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	406
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	407 // Don't "optimize" the OUT calls into the bitTime subroutine;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	408 // we're exploiting the RCALL and RET as 3- and 4-cycle NOPs!
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	409 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	410 "headD:" "\n\t" // (T = 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	411 "out %[port], %[hi]" "\n\t" // (T = 1)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	412 "rcall bitTimeD" "\n\t" // Bit 7 (T = 15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	413 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	414 "rcall bitTimeD" "\n\t" // Bit 6
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	415 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	416 "rcall bitTimeD" "\n\t" // Bit 5
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	417 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	418 "rcall bitTimeD" "\n\t" // Bit 4
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	419 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	420 "rcall bitTimeD" "\n\t" // Bit 3
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	421 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	422 "rcall bitTimeD" "\n\t" // Bit 2
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	423 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	424 "rcall bitTimeD" "\n\t" // Bit 1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	425 // Bit 0:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	426 "out %[port] , %[hi]" "\n\t" // 1 PORT = hi (T = 1)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	427 "rjmp .+0" "\n\t" // 2 nop nop (T = 3)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	428 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 5)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	429 "out %[port] , %[next]" "\n\t" // 1 PORT = next (T = 6)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	430 "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 7)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	431 "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 0x80) (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	432 "mov %[next] , %[hi]" "\n\t" // 0-1 next = hi (T = 9)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	433 "nop" "\n\t" // 1 (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	434 "out %[port] , %[lo]" "\n\t" // 1 PORT = lo (T = 11)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	435 "sbiw %[count], 1" "\n\t" // 2 i-- (T = 13)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	436 "brne headD" "\n\t" // 2 if(i != 0) -> (next byte)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	437 "rjmp doneD" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	438 "bitTimeD:" "\n\t" // nop nop nop (T = 4)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	439 "out %[port], %[next]" "\n\t" // 1 PORT = next (T = 5)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	440 "mov %[next], %[lo]" "\n\t" // 1 next = lo (T = 6)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	441 "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 7)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	442 "sbrc %[byte], 7" "\n\t" // 1-2 if(b & 0x80) (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	443 "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 9)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	444 "nop" "\n\t" // 1 (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	445 "out %[port], %[lo]" "\n\t" // 1 PORT = lo (T = 11)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	446 "ret" "\n\t" // 4 nop nop nop nop (T = 15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	447 "doneD:" "\n"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	448 : [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	449 [next] "+r" (next),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	450 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	451 : [port] "I" (_SFR_IO_ADDR(PORTD)),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	452 [ptr] "e" (ptr),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	453 [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	454 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	455
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	456 } else if(port == &PORTB) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	457
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	458 #endif // PORTD
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	459
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	460 hi = PORTB \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	461 lo = PORTB & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	462 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	463 if(b & 0x80) next = hi;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	464
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	465 // Same as above, just set for PORTB & stripped of comments
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	466 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	467 "headB:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	468 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	469 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	470 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	471 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	472 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	473 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	474 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	475 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	476 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	477 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	478 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	479 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	480 "out %[port], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	481 "rcall bitTimeB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	482 "out %[port] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	483 "rjmp .+0" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	484 "ld %[byte] , %a[ptr]+" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	485 "out %[port] , %[next]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	486 "mov %[next] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	487 "sbrc %[byte] , 7" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	488 "mov %[next] , %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	489 "nop" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	490 "out %[port] , %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	491 "sbiw %[count], 1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	492 "brne headB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	493 "rjmp doneB" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	494 "bitTimeB:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	495 "out %[port], %[next]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	496 "mov %[next], %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	497 "rol %[byte]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	498 "sbrc %[byte], 7" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	499 "mov %[next], %[hi]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	500 "nop" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	501 "out %[port], %[lo]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	502 "ret" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	503 "doneB:" "\n"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	504 : [byte] "+r" (b), [next] "+r" (next), [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	505 : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	506 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	507
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	508 #ifdef PORTD
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	509 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	510 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	511
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	512 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	513 } else { // 400 KHz
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	514
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	515 // 30 instruction clocks per bit: HHHHHHxxxxxxxxxLLLLLLLLLLLLLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	516 // ST instructions: ^ ^ ^ (T=0,6,15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	517
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	518 volatile uint8_t next, bit;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	519
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	520 hi = *port \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	521 lo = *port & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	522 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	523 bit = 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	524
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	525 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	526 "head30:" "\n\t" // Clk Pseudocode (T = 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	527 "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	528 "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	529 "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	530 "rjmp .+0" "\n\t" // 2 nop nop (T = 6)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	531 "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	532 "rjmp .+0" "\n\t" // 2 nop nop (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	533 "rjmp .+0" "\n\t" // 2 nop nop (T = 12)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	534 "rjmp .+0" "\n\t" // 2 nop nop (T = 14)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	535 "nop" "\n\t" // 1 nop (T = 15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	536 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 17)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	537 "rjmp .+0" "\n\t" // 2 nop nop (T = 19)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	538 "dec %[bit]" "\n\t" // 1 bit-- (T = 20)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	539 "breq nextbyte30" "\n\t" // 1-2 if(bit == 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	540 "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 22)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	541 "rjmp .+0" "\n\t" // 2 nop nop (T = 24)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	542 "rjmp .+0" "\n\t" // 2 nop nop (T = 26)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	543 "rjmp .+0" "\n\t" // 2 nop nop (T = 28)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	544 "rjmp head30" "\n\t" // 2 -> head30 (next bit out)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	545 "nextbyte30:" "\n\t" // (T = 22)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	546 "nop" "\n\t" // 1 nop (T = 23)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	547 "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 24)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	548 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 26)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	549 "sbiw %[count], 1" "\n\t" // 2 i-- (T = 28)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	550 "brne head30" "\n" // 1-2 if(i != 0) -> (next byte)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	551 : [port] "+e" (port),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	552 [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	553 [bit] "+r" (bit),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	554 [next] "+r" (next),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	555 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	556 : [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	557 [lo] "r" (lo),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	558 [ptr] "e" (ptr));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	559 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	560 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	561
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	562 // 16 MHz(ish) AVR --------------------------------------------------------
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	563 #elif (F_CPU >= 15400000UL) && (F_CPU <= 19000000L)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	564
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	565 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	566 if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	567 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	568
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	569 // WS2811 and WS2812 have different hi/lo duty cycles; this is
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	570 // similar but NOT an exact copy of the prior 400-on-8 code.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	571
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	572 // 20 inst. clocks per bit: HHHHHxxxxxxxxLLLLLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	573 // ST instructions: ^ ^ ^ (T=0,5,13)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	574
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	575 volatile uint8_t next, bit;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	576
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	577 hi = *port \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	578 lo = *port & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	579 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	580 bit = 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	581
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	582 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	583 "head20:" "\n\t" // Clk Pseudocode (T = 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	584 "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	585 "sbrc %[byte], 7" "\n\t" // 1-2 if(b & 128)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	586 "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	587 "dec %[bit]" "\n\t" // 1 bit-- (T = 5)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	588 "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 7)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	589 "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	590 "breq nextbyte20" "\n\t" // 1-2 if(bit == 0) (from dec above)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	591 "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	592 "rjmp .+0" "\n\t" // 2 nop nop (T = 12)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	593 "nop" "\n\t" // 1 nop (T = 13)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	594 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	595 "nop" "\n\t" // 1 nop (T = 16)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	596 "rjmp .+0" "\n\t" // 2 nop nop (T = 18)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	597 "rjmp head20" "\n\t" // 2 -> head20 (next bit out)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	598 "nextbyte20:" "\n\t" // (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	599 "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 11)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	600 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 13)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	601 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 15)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	602 "nop" "\n\t" // 1 nop (T = 16)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	603 "sbiw %[count], 1" "\n\t" // 2 i-- (T = 18)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	604 "brne head20" "\n" // 2 if(i != 0) -> (next byte)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	605 : [port] "+e" (port),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	606 [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	607 [bit] "+r" (bit),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	608 [next] "+r" (next),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	609 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	610 : [ptr] "e" (ptr),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	611 [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	612 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	613
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	614 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	615 } else { // 400 KHz
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	616
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	617 // The 400 KHz clock on 16 MHz MCU is the most 'relaxed' version.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	618
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	619 // 40 inst. clocks per bit: HHHHHHHHxxxxxxxxxxxxLLLLLLLLLLLLLLLLLLLL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	620 // ST instructions: ^ ^ ^ (T=0,8,20)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	621
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	622 volatile uint8_t next, bit;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	623
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	624 hi = *port \| pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	625 lo = *port & ~pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	626 next = lo;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	627 bit = 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	628
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	629 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	630 "head40:" "\n\t" // Clk Pseudocode (T = 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	631 "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	632 "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	633 "mov %[next] , %[hi]" "\n\t" // 0-1 next = hi (T = 4)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	634 "rjmp .+0" "\n\t" // 2 nop nop (T = 6)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	635 "rjmp .+0" "\n\t" // 2 nop nop (T = 8)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	636 "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 10)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	637 "rjmp .+0" "\n\t" // 2 nop nop (T = 12)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	638 "rjmp .+0" "\n\t" // 2 nop nop (T = 14)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	639 "rjmp .+0" "\n\t" // 2 nop nop (T = 16)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	640 "rjmp .+0" "\n\t" // 2 nop nop (T = 18)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	641 "rjmp .+0" "\n\t" // 2 nop nop (T = 20)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	642 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 22)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	643 "nop" "\n\t" // 1 nop (T = 23)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	644 "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 24)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	645 "dec %[bit]" "\n\t" // 1 bit-- (T = 25)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	646 "breq nextbyte40" "\n\t" // 1-2 if(bit == 0)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	647 "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 27)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	648 "nop" "\n\t" // 1 nop (T = 28)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	649 "rjmp .+0" "\n\t" // 2 nop nop (T = 30)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	650 "rjmp .+0" "\n\t" // 2 nop nop (T = 32)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	651 "rjmp .+0" "\n\t" // 2 nop nop (T = 34)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	652 "rjmp .+0" "\n\t" // 2 nop nop (T = 36)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	653 "rjmp .+0" "\n\t" // 2 nop nop (T = 38)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	654 "rjmp head40" "\n\t" // 2 -> head40 (next bit out)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	655 "nextbyte40:" "\n\t" // (T = 27)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	656 "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 28)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	657 "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 30)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	658 "rjmp .+0" "\n\t" // 2 nop nop (T = 32)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	659 "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 34)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	660 "rjmp .+0" "\n\t" // 2 nop nop (T = 36)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	661 "sbiw %[count], 1" "\n\t" // 2 i-- (T = 38)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	662 "brne head40" "\n" // 1-2 if(i != 0) -> (next byte)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	663 : [port] "+e" (port),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	664 [byte] "+r" (b),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	665 [bit] "+r" (bit),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	666 [next] "+r" (next),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	667 [count] "+w" (i)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	668 : [ptr] "e" (ptr),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	669 [hi] "r" (hi),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	670 [lo] "r" (lo));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	671 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	672 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	673
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	674 #else
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	675 #error "CPU SPEED NOT SUPPORTED"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	676 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	677
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	678 #elif defined(__arm__)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	679
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	680 #if defined(__MK20DX128__) \|\| defined(__MK20DX256__) // Teensy 3.0 & 3.1
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	681 #define CYCLES_800_T0H (F_CPU / 4000000)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	682 #define CYCLES_800_T1H (F_CPU / 1250000)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	683 #define CYCLES_800 (F_CPU / 800000)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	684 #define CYCLES_400_T0H (F_CPU / 2000000)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	685 #define CYCLES_400_T1H (F_CPU / 833333)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	686 #define CYCLES_400 (F_CPU / 400000)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	687
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	688 uint8_t *p = pixels,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	689 *end = p + numBytes, pix, mask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	690 volatile uint8_t *set = portSetRegister(pin),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	691 *clr = portClearRegister(pin);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	692 uint32_t cyc;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	693
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	694 ARM_DEMCR \|= ARM_DEMCR_TRCENA;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	695 ARM_DWT_CTRL \|= ARM_DWT_CTRL_CYCCNTENA;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	696
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	697 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	698 if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	699 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	700 cyc = ARM_DWT_CYCCNT + CYCLES_800;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	701 while(p < end) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	702 pix = *p++;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	703 for(mask = 0x80; mask; mask >>= 1) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	704 while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	705 cyc = ARM_DWT_CYCCNT;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	706 *set = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	707 if(pix & mask) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	708 while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	709 } else {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	710 while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	711 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	712 *clr = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	713 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	714 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	715 while(ARM_DWT_CYCCNT - cyc < CYCLES_800);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	716 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	717 } else { // 400 kHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	718 cyc = ARM_DWT_CYCCNT + CYCLES_400;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	719 while(p < end) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	720 pix = *p++;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	721 for(mask = 0x80; mask; mask >>= 1) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	722 while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	723 cyc = ARM_DWT_CYCCNT;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	724 *set = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	725 if(pix & mask) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	726 while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	727 } else {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	728 while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	729 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	730 *clr = 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	731 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	732 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	733 while(ARM_DWT_CYCCNT - cyc < CYCLES_400);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	734 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	735 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	736
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	737
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	738
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	739
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	740
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	741 #elif defined(__MKL26Z64__) // Teensy-LC
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	742
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	743 #if F_CPU == 48000000
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	744 uint8_t *p = pixels,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	745 pix, count, dly,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	746 bitmask = digitalPinToBitMask(pin);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	747 volatile uint8_t *reg = portSetRegister(pin);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	748 uint32_t num = numBytes;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	749 asm volatile(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	750 "L%=_begin:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	751 "ldrb %[pix], [%[p], #0]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	752 "lsl %[pix], #24" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	753 "movs %[count], #7" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	754 "L%=_loop:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	755 "lsl %[pix], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	756 "bcs L%=_loop_one" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	757 "L%=_loop_zero:"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	758 "strb %[bitmask], [%[reg], #0]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	759 "movs %[dly], #4" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	760 "L%=_loop_delay_T0H:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	761 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	762 "bne L%=_loop_delay_T0H" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	763 "strb %[bitmask], [%[reg], #4]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	764 "movs %[dly], #13" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	765 "L%=_loop_delay_T0L:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	766 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	767 "bne L%=_loop_delay_T0L" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	768 "b L%=_next" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	769 "L%=_loop_one:"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	770 "strb %[bitmask], [%[reg], #0]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	771 "movs %[dly], #13" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	772 "L%=_loop_delay_T1H:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	773 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	774 "bne L%=_loop_delay_T1H" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	775 "strb %[bitmask], [%[reg], #4]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	776 "movs %[dly], #4" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	777 "L%=_loop_delay_T1L:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	778 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	779 "bne L%=_loop_delay_T1L" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	780 "nop" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	781 "L%=_next:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	782 "sub %[count], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	783 "bne L%=_loop" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	784 "lsl %[pix], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	785 "bcs L%=_last_one" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	786 "L%=_last_zero:"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	787 "strb %[bitmask], [%[reg], #0]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	788 "movs %[dly], #4" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	789 "L%=_last_delay_T0H:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	790 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	791 "bne L%=_last_delay_T0H" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	792 "strb %[bitmask], [%[reg], #4]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	793 "movs %[dly], #10" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	794 "L%=_last_delay_T0L:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	795 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	796 "bne L%=_last_delay_T0L" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	797 "b L%=_repeat" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	798 "L%=_last_one:"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	799 "strb %[bitmask], [%[reg], #0]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	800 "movs %[dly], #13" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	801 "L%=_last_delay_T1H:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	802 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	803 "bne L%=_last_delay_T1H" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	804 "strb %[bitmask], [%[reg], #4]" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	805 "movs %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	806 "L%=_last_delay_T1L:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	807 "sub %[dly], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	808 "bne L%=_last_delay_T1L" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	809 "nop" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	810 "L%=_repeat:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	811 "add %[p], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	812 "sub %[num], #1" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	813 "bne L%=_begin" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	814 "L%=_done:" "\n\t"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	815 : [p] "+r" (p),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	816 [pix] "=&r" (pix),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	817 [count] "=&r" (count),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	818 [dly] "=&r" (dly),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	819 [num] "+r" (num)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	820 : [bitmask] "r" (bitmask),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	821 [reg] "r" (reg)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	822 );
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	823 #else
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	824 #error "Sorry, only 48 MHz is supported, please set Tools > CPU Speed to 48 MHz"
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	825 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	826
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	827
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	828 #else // Arduino Due
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	829
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	830 #define SCALE VARIANT_MCK / 2UL / 1000000UL
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	831 #define INST (2UL * F_CPU / VARIANT_MCK)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	832 #define TIME_800_0 ((int)(0.40 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	833 #define TIME_800_1 ((int)(0.80 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	834 #define PERIOD_800 ((int)(1.25 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	835 #define TIME_400_0 ((int)(0.50 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	836 #define TIME_400_1 ((int)(1.20 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	837 #define PERIOD_400 ((int)(2.50 * SCALE + 0.5) - (5 * INST))
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	838
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	839 int pinMask, time0, time1, period, t;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	840 Pio *port;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	841 volatile WoReg portSet, portClear, timeValue, timeReset;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	842 uint8_t p, end, pix, mask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	843
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	844 pmc_set_writeprotect(false);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	845 pmc_enable_periph_clk((uint32_t)TC3_IRQn);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	846 TC_Configure(TC1, 0,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	847 TC_CMR_WAVE \| TC_CMR_WAVSEL_UP \| TC_CMR_TCCLKS_TIMER_CLOCK1);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	848 TC_Start(TC1, 0);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	849
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	850 pinMask = g_APinDescription[pin].ulPin; // Don't 'optimize' these into
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	851 port = g_APinDescription[pin].pPort; // declarations above. Want to
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	852 portSet = &(port->PIO_SODR); // burn a few cycles after
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	853 portClear = &(port->PIO_CODR); // starting timer to minimize
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	854 timeValue = &(TC1->TC_CHANNEL[0].TC_CV); // the initial 'while'.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	855 timeReset = &(TC1->TC_CHANNEL[0].TC_CCR);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	856 p = pixels;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	857 end = p + numBytes;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	858 pix = *p++;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	859 mask = 0x80;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	860
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	861 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	862 if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	863 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	864 time0 = TIME_800_0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	865 time1 = TIME_800_1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	866 period = PERIOD_800;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	867 #ifdef NEO_KHZ400
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	868 } else { // 400 KHz bitstream
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	869 time0 = TIME_400_0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	870 time1 = TIME_400_1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	871 period = PERIOD_400;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	872 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	873 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	874
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	875 for(t = time0;; t = time0) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	876 if(pix & mask) t = time1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	877 while(*timeValue < period);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	878 *portSet = pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	879 *timeReset = TC_CCR_CLKEN \| TC_CCR_SWTRG;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	880 while(*timeValue < t);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	881 *portClear = pinMask;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	882 if(!(mask >>= 1)) { // This 'inside-out' loop logic utilizes
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	883 if(p >= end) break; // idle time to minimize inter-byte delays.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	884 pix = *p++;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	885 mask = 0x80;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	886 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	887 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	888 while(*timeValue < period); // Wait for last bit
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	889 TC_Stop(TC1, 0);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	890
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	891 #endif // end Arduino Due
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	892
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	893 #endif // end Architecture select
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	894
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	895 interrupts();
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	896 endTime = micros(); // Save EOD time for latch on next call
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	897 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	898
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	899 // Set the output pin number
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	900 void Adafruit_NeoPixel::setPin(uint8_t p) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	901 pinMode(pin, INPUT);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	902 pin = p;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	903 pinMode(p, OUTPUT);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	904 digitalWrite(p, LOW);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	905 #ifdef __AVR__
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	906 port = portOutputRegister(digitalPinToPort(p));
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	907 pinMask = digitalPinToBitMask(p);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	908 #endif
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	909 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	910
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	911 // Set pixel color from separate R,G,B components:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	912 void Adafruit_NeoPixel::setPixelColor(
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	913 uint16_t n, uint8_t r, uint8_t g, uint8_t b) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	914 if(n < numLEDs) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	915 if(brightness) { // See notes in setBrightness()
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	916 r = (r * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	917 g = (g * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	918 b = (b * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	919 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	920 uint8_t p = &pixels[n 3];
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	921 p[rOffset] = r;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	922 p[gOffset] = g;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	923 p[bOffset] = b;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	924 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	925 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	926
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	927 // Set pixel color from 'packed' 32-bit RGB color:
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	928 void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	929 if(n < numLEDs) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	930 uint8_t
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	931 r = (uint8_t)(c >> 16),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	932 g = (uint8_t)(c >> 8),
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	933 b = (uint8_t)c;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	934 if(brightness) { // See notes in setBrightness()
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	935 r = (r * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	936 g = (g * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	937 b = (b * brightness) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	938 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	939 uint8_t p = &pixels[n 3];
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	940 p[rOffset] = r;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	941 p[gOffset] = g;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	942 p[bOffset] = b;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	943 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	944 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	945
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	946 // Convert separate R,G,B into packed 32-bit RGB color.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	947 // Packed format is always RGB, regardless of LED strand color order.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	948 uint32_t Adafruit_NeoPixel::Color(uint8_t r, uint8_t g, uint8_t b) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	949 return ((uint32_t)r << 16) \| ((uint32_t)g << 8) \| b;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	950 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	951
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	952 // Query color from previously-set pixel (returns packed 32-bit RGB value)
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	953 uint32_t Adafruit_NeoPixel::getPixelColor(uint16_t n) const {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	954 if(n >= numLEDs) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	955 // Out of bounds, return no color.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	956 return 0;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	957 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	958 uint8_t p = &pixels[n 3];
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	959 uint32_t c = ((uint32_t)p[rOffset] << 16) \|
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	960 ((uint32_t)p[gOffset] << 8) \|
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	961 (uint32_t)p[bOffset];
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	962 // Adjust this back up to the true color, as setting a pixel color will
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	963 // scale it back down again.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	964 if(brightness) { // See notes in setBrightness()
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	965 //Cast the color to a byte array
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	966 uint8_t * c_ptr =reinterpret_cast<uint8_t*>(&c);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	967 c_ptr[0] = (c_ptr[0] << 8)/brightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	968 c_ptr[1] = (c_ptr[1] << 8)/brightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	969 c_ptr[2] = (c_ptr[2] << 8)/brightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	970 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	971 return c; // Pixel # is out of bounds
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	972 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	973
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	974 // Returns pointer to pixels[] array. Pixel data is stored in device-
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	975 // native format and is not translated here. Application will need to be
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	976 // aware whether pixels are RGB vs. GRB and handle colors appropriately.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	977 uint8_t *Adafruit_NeoPixel::getPixels(void) const {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	978 return pixels;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	979 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	980
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	981 uint16_t Adafruit_NeoPixel::numPixels(void) const {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	982 return numLEDs;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	983 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	984
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	985 // Adjust output brightness; 0=darkest (off), 255=brightest. This does
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	986 // NOT immediately affect what's currently displayed on the LEDs. The
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	987 // next call to show() will refresh the LEDs at this level. However,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	988 // this process is potentially "lossy," especially when increasing
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	989 // brightness. The tight timing in the WS2811/WS2812 code means there
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	990 // aren't enough free cycles to perform this scaling on the fly as data
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	991 // is issued. So we make a pass through the existing color data in RAM
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	992 // and scale it (subsequent graphics commands also work at this
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	993 // brightness level). If there's a significant step up in brightness,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	994 // the limited number of steps (quantization) in the old data will be
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	995 // quite visible in the re-scaled version. For a non-destructive
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	996 // change, you'll need to re-render the full strip data. C'est la vie.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	997 void Adafruit_NeoPixel::setBrightness(uint8_t b) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	998 // Stored brightness value is different than what's passed.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	999 // This simplifies the actual scaling math later, allowing a fast
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1000 // 8x8-bit multiply and taking the MSB. 'brightness' is a uint8_t,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1001 // adding 1 here may (intentionally) roll over...so 0 = max brightness
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1002 // (color values are interpreted literally; no scaling), 1 = min
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1003 // brightness (off), 255 = just below max brightness.
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1004 uint8_t newBrightness = b + 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1005 if(newBrightness != brightness) { // Compare against prior value
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1006 // Brightness has changed -- re-scale existing data in RAM
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1007 uint8_t c,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1008 *ptr = pixels,
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1009 oldBrightness = brightness - 1; // De-wrap old brightness value
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1010 uint16_t scale;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1011 if(oldBrightness == 0) scale = 0; // Avoid /0
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1012 else if(b == 255) scale = 65535 / oldBrightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1013 else scale = (((uint16_t)newBrightness << 8) - 1) / oldBrightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1014 for(uint16_t i=0; i<numBytes; i++) {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1015 c = *ptr;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1016 ptr++ = (c scale) >> 8;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1017 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1018 brightness = newBrightness;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1019 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1020 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1021
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1022 //Return the brightness value
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1023 uint8_t Adafruit_NeoPixel::getBrightness(void) const {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1024 return brightness - 1;
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1025 }
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1026
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1027 void Adafruit_NeoPixel::clear() {
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1028 memset(pixels, 0, numBytes);
ef4ae15f2661 copy in rgb led program for arduino Drew Perttula <drewp@bigasterisk.com> parents: diff changeset	1029 }

Mercurial > code > home > repos > light9

annotate rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp @ 2143:b27a3a8f9ecb