# HG changeset patch # User Drew Perttula # Date 2015-06-10 04:55:39 # Node ID ef4ae15f266187d603ee93c5ac193e856de712c8 # Parent 23377f8efd0953c5ac32e87abe7861317cd9fbf9 copy in rgb led program for arduino Ignore-this: ee63cf3e2100597625a4392bd95aba0d diff --git a/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp new file mode 100644 --- /dev/null +++ b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp @@ -0,0 +1,1029 @@ +/*------------------------------------------------------------------------- + Arduino library to control a wide variety of WS2811- and WS2812-based RGB + LED devices such as Adafruit FLORA RGB Smart Pixels and NeoPixel strips. + Currently handles 400 and 800 KHz bitstreams on 8, 12 and 16 MHz ATmega + MCUs, with LEDs wired for RGB or GRB color order. 8 MHz MCUs provide + output on PORTB and PORTD, while 16 MHz chips can handle most output pins + (possible exception with upper PORT registers on the Arduino Mega). + + Written by Phil Burgess / Paint Your Dragon for Adafruit Industries, + contributions by PJRC and other members of the open source community. + + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing products + from Adafruit! + + ------------------------------------------------------------------------- + This file is part of the Adafruit NeoPixel library. + + NeoPixel is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation, either version 3 of + the License, or (at your option) any later version. + + NeoPixel is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with NeoPixel. If not, see + . + -------------------------------------------------------------------------*/ + +#include "Adafruit_NeoPixel.h" + +Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, uint8_t p, uint8_t t) : + numLEDs(n), numBytes(n * 3), pin(p), brightness(0), + pixels(NULL), type(t), endTime(0) +#ifdef __AVR__ + ,port(portOutputRegister(digitalPinToPort(p))), + pinMask(digitalPinToBitMask(p)) +#endif +{ + if((pixels = (uint8_t *)malloc(numBytes))) { + memset(pixels, 0, numBytes); + } + if(t & NEO_GRB) { // GRB vs RGB; might add others if needed + rOffset = 1; + gOffset = 0; + bOffset = 2; + } else if (t & NEO_BRG) { + rOffset = 1; + gOffset = 2; + bOffset = 0; + } else { + rOffset = 0; + gOffset = 1; + bOffset = 2; + } + +} + +Adafruit_NeoPixel::~Adafruit_NeoPixel() { + if(pixels) free(pixels); + pinMode(pin, INPUT); +} + +void Adafruit_NeoPixel::begin(void) { + pinMode(pin, OUTPUT); + digitalWrite(pin, LOW); +} + +void Adafruit_NeoPixel::show(void) { + + if(!pixels) return; + + // Data latch = 50+ microsecond pause in the output stream. Rather than + // put a delay at the end of the function, the ending time is noted and + // the function will simply hold off (if needed) on issuing the + // subsequent round of data until the latch time has elapsed. This + // allows the mainline code to start generating the next frame of data + // rather than stalling for the latch. + while(!canShow()); + // endTime is a private member (rather than global var) so that mutliple + // instances on different pins can be quickly issued in succession (each + // instance doesn't delay the next). + + // In order to make this code runtime-configurable to work with any pin, + // SBI/CBI instructions are eschewed in favor of full PORT writes via the + // OUT or ST instructions. It relies on two facts: that peripheral + // functions (such as PWM) take precedence on output pins, so our PORT- + // wide writes won't interfere, and that interrupts are globally disabled + // while data is being issued to the LEDs, so no other code will be + // accessing the PORT. The code takes an initial 'snapshot' of the PORT + // state, computes 'pin high' and 'pin low' values, and writes these back + // to the PORT register as needed. + + noInterrupts(); // Need 100% focus on instruction timing + +#ifdef __AVR__ + + volatile uint16_t + i = numBytes; // Loop counter + volatile uint8_t + *ptr = pixels, // Pointer to next byte + b = *ptr++, // Current byte value + hi, // PORT w/output bit set high + lo; // PORT w/output bit set low + + // Hand-tuned assembly code issues data to the LED drivers at a specific + // rate. There's separate code for different CPU speeds (8, 12, 16 MHz) + // for both the WS2811 (400 KHz) and WS2812 (800 KHz) drivers. The + // datastream timing for the LED drivers allows a little wiggle room each + // way (listed in the datasheets), so the conditions for compiling each + // case are set up for a range of frequencies rather than just the exact + // 8, 12 or 16 MHz values, permitting use with some close-but-not-spot-on + // devices (e.g. 16.5 MHz DigiSpark). The ranges were arrived at based + // on the datasheet figures and have not been extensively tested outside + // the canonical 8/12/16 MHz speeds; there's no guarantee these will work + // close to the extremes (or possibly they could be pushed further). + // Keep in mind only one CPU speed case actually gets compiled; the + // resulting program isn't as massive as it might look from source here. + +// 8 MHz(ish) AVR --------------------------------------------------------- +#if (F_CPU >= 7400000UL) && (F_CPU <= 9500000UL) + +#ifdef NEO_KHZ400 + if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream +#endif + + volatile uint8_t n1, n2 = 0; // First, next bits out + + // Squeezing an 800 KHz stream out of an 8 MHz chip requires code + // specific to each PORT register. At present this is only written + // to work with pins on PORTD or PORTB, the most likely use case -- + // this covers all the pins on the Adafruit Flora and the bulk of + // digital pins on the Arduino Pro 8 MHz (keep in mind, this code + // doesn't even get compiled for 16 MHz boards like the Uno, Mega, + // Leonardo, etc., so don't bother extending this out of hand). + // Additional PORTs could be added if you really need them, just + // duplicate the else and loop and change the PORT. Each add'l + // PORT will require about 150(ish) bytes of program space. + + // 10 instruction clocks per bit: HHxxxxxLLL + // OUT instructions: ^ ^ ^ (T=0,2,7) + +#ifdef PORTD // PORTD isn't present on ATtiny85, etc. + + if(port == &PORTD) { + + hi = PORTD | pinMask; + lo = PORTD & ~pinMask; + n1 = lo; + if(b & 0x80) n1 = hi; + + // Dirty trick: RJMPs proceeding to the next instruction are used + // to delay two clock cycles in one instruction word (rather than + // using two NOPs). This was necessary in order to squeeze the + // loop down to exactly 64 words -- the maximum possible for a + // relative branch. + + asm volatile( + "headD:" "\n\t" // Clk Pseudocode + // Bit 7: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo + "out %[port] , %[n1]" "\n\t" // 1 PORT = n1 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 6" "\n\t" // 1-2 if(b & 0x40) + "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 6: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo + "out %[port] , %[n2]" "\n\t" // 1 PORT = n2 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 5" "\n\t" // 1-2 if(b & 0x20) + "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 5: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo + "out %[port] , %[n1]" "\n\t" // 1 PORT = n1 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 4" "\n\t" // 1-2 if(b & 0x10) + "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 4: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo + "out %[port] , %[n2]" "\n\t" // 1 PORT = n2 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 3" "\n\t" // 1-2 if(b & 0x08) + "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 3: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo + "out %[port] , %[n1]" "\n\t" // 1 PORT = n1 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 2" "\n\t" // 1-2 if(b & 0x04) + "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 2: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo + "out %[port] , %[n2]" "\n\t" // 1 PORT = n2 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 1" "\n\t" // 1-2 if(b & 0x02) + "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "rjmp .+0" "\n\t" // 2 nop nop + // Bit 1: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n2] , %[lo]" "\n\t" // 1 n2 = lo + "out %[port] , %[n1]" "\n\t" // 1 PORT = n1 + "rjmp .+0" "\n\t" // 2 nop nop + "sbrc %[byte] , 0" "\n\t" // 1-2 if(b & 0x01) + "mov %[n2] , %[hi]" "\n\t" // 0-1 n2 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "sbiw %[count], 1" "\n\t" // 2 i-- (don't act on Z flag yet) + // Bit 0: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi + "mov %[n1] , %[lo]" "\n\t" // 1 n1 = lo + "out %[port] , %[n2]" "\n\t" // 1 PORT = n2 + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ + "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 0x80) + "mov %[n1] , %[hi]" "\n\t" // 0-1 n1 = hi + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo + "brne headD" "\n" // 2 while(i) (Z flag set above) + : [byte] "+r" (b), + [n1] "+r" (n1), + [n2] "+r" (n2), + [count] "+w" (i) + : [port] "I" (_SFR_IO_ADDR(PORTD)), + [ptr] "e" (ptr), + [hi] "r" (hi), + [lo] "r" (lo)); + + } else if(port == &PORTB) { + +#endif // PORTD + + // Same as above, just switched to PORTB and stripped of comments. + hi = PORTB | pinMask; + lo = PORTB & ~pinMask; + n1 = lo; + if(b & 0x80) n1 = hi; + + asm volatile( + "headB:" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n2] , %[lo]" "\n\t" + "out %[port] , %[n1]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 6" "\n\t" + "mov %[n2] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n1] , %[lo]" "\n\t" + "out %[port] , %[n2]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 5" "\n\t" + "mov %[n1] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n2] , %[lo]" "\n\t" + "out %[port] , %[n1]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 4" "\n\t" + "mov %[n2] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n1] , %[lo]" "\n\t" + "out %[port] , %[n2]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 3" "\n\t" + "mov %[n1] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n2] , %[lo]" "\n\t" + "out %[port] , %[n1]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 2" "\n\t" + "mov %[n2] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n1] , %[lo]" "\n\t" + "out %[port] , %[n2]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 1" "\n\t" + "mov %[n1] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "rjmp .+0" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n2] , %[lo]" "\n\t" + "out %[port] , %[n1]" "\n\t" + "rjmp .+0" "\n\t" + "sbrc %[byte] , 0" "\n\t" + "mov %[n2] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "sbiw %[count], 1" "\n\t" + "out %[port] , %[hi]" "\n\t" + "mov %[n1] , %[lo]" "\n\t" + "out %[port] , %[n2]" "\n\t" + "ld %[byte] , %a[ptr]+" "\n\t" + "sbrc %[byte] , 7" "\n\t" + "mov %[n1] , %[hi]" "\n\t" + "out %[port] , %[lo]" "\n\t" + "brne headB" "\n" + : [byte] "+r" (b), [n1] "+r" (n1), [n2] "+r" (n2), [count] "+w" (i) + : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi), + [lo] "r" (lo)); + +#ifdef PORTD + } // endif PORTB +#endif + +#ifdef NEO_KHZ400 + } else { // end 800 KHz, do 400 KHz + + // Timing is more relaxed; unrolling the inner loop for each bit is + // not necessary. Still using the peculiar RJMPs as 2X NOPs, not out + // of need but just to trim the code size down a little. + // This 400-KHz-datastream-on-8-MHz-CPU code is not quite identical + // to the 800-on-16 code later -- the hi/lo timing between WS2811 and + // WS2812 is not simply a 2:1 scale! + + // 20 inst. clocks per bit: HHHHxxxxxxLLLLLLLLLL + // ST instructions: ^ ^ ^ (T=0,4,10) + + volatile uint8_t next, bit; + + hi = *port | pinMask; + lo = *port & ~pinMask; + next = lo; + bit = 8; + + asm volatile( + "head20:" "\n\t" // Clk Pseudocode (T = 0) + "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2) + "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128) + "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4) + "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 6) + "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 7) + "dec %[bit]" "\n\t" // 1 bit-- (T = 8) + "breq nextbyte20" "\n\t" // 1-2 if(bit == 0) + "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 10) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 12) + "rjmp .+0" "\n\t" // 2 nop nop (T = 14) + "rjmp .+0" "\n\t" // 2 nop nop (T = 16) + "rjmp .+0" "\n\t" // 2 nop nop (T = 18) + "rjmp head20" "\n\t" // 2 -> head20 (next bit out) + "nextbyte20:" "\n\t" // (T = 10) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 12) + "nop" "\n\t" // 1 nop (T = 13) + "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 14) + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 16) + "sbiw %[count], 1" "\n\t" // 2 i-- (T = 18) + "brne head20" "\n" // 2 if(i != 0) -> (next byte) + : [port] "+e" (port), + [byte] "+r" (b), + [bit] "+r" (bit), + [next] "+r" (next), + [count] "+w" (i) + : [hi] "r" (hi), + [lo] "r" (lo), + [ptr] "e" (ptr)); + } +#endif + +// 12 MHz(ish) AVR -------------------------------------------------------- +#elif (F_CPU >= 11100000UL) && (F_CPU <= 14300000UL) + +#ifdef NEO_KHZ400 + if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream +#endif + + // In the 12 MHz case, an optimized 800 KHz datastream (no dead time + // between bytes) requires a PORT-specific loop similar to the 8 MHz + // code (but a little more relaxed in this case). + + // 15 instruction clocks per bit: HHHHxxxxxxLLLLL + // OUT instructions: ^ ^ ^ (T=0,4,10) + + volatile uint8_t next; + +#ifdef PORTD + + if(port == &PORTD) { + + hi = PORTD | pinMask; + lo = PORTD & ~pinMask; + next = lo; + if(b & 0x80) next = hi; + + // Don't "optimize" the OUT calls into the bitTime subroutine; + // we're exploiting the RCALL and RET as 3- and 4-cycle NOPs! + asm volatile( + "headD:" "\n\t" // (T = 0) + "out %[port], %[hi]" "\n\t" // (T = 1) + "rcall bitTimeD" "\n\t" // Bit 7 (T = 15) + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 6 + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 5 + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 4 + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 3 + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 2 + "out %[port], %[hi]" "\n\t" + "rcall bitTimeD" "\n\t" // Bit 1 + // Bit 0: + "out %[port] , %[hi]" "\n\t" // 1 PORT = hi (T = 1) + "rjmp .+0" "\n\t" // 2 nop nop (T = 3) + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 5) + "out %[port] , %[next]" "\n\t" // 1 PORT = next (T = 6) + "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 7) + "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 0x80) (T = 8) + "mov %[next] , %[hi]" "\n\t" // 0-1 next = hi (T = 9) + "nop" "\n\t" // 1 (T = 10) + "out %[port] , %[lo]" "\n\t" // 1 PORT = lo (T = 11) + "sbiw %[count], 1" "\n\t" // 2 i-- (T = 13) + "brne headD" "\n\t" // 2 if(i != 0) -> (next byte) + "rjmp doneD" "\n\t" + "bitTimeD:" "\n\t" // nop nop nop (T = 4) + "out %[port], %[next]" "\n\t" // 1 PORT = next (T = 5) + "mov %[next], %[lo]" "\n\t" // 1 next = lo (T = 6) + "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 7) + "sbrc %[byte], 7" "\n\t" // 1-2 if(b & 0x80) (T = 8) + "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 9) + "nop" "\n\t" // 1 (T = 10) + "out %[port], %[lo]" "\n\t" // 1 PORT = lo (T = 11) + "ret" "\n\t" // 4 nop nop nop nop (T = 15) + "doneD:" "\n" + : [byte] "+r" (b), + [next] "+r" (next), + [count] "+w" (i) + : [port] "I" (_SFR_IO_ADDR(PORTD)), + [ptr] "e" (ptr), + [hi] "r" (hi), + [lo] "r" (lo)); + + } else if(port == &PORTB) { + +#endif // PORTD + + hi = PORTB | pinMask; + lo = PORTB & ~pinMask; + next = lo; + if(b & 0x80) next = hi; + + // Same as above, just set for PORTB & stripped of comments + asm volatile( + "headB:" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port], %[hi]" "\n\t" + "rcall bitTimeB" "\n\t" + "out %[port] , %[hi]" "\n\t" + "rjmp .+0" "\n\t" + "ld %[byte] , %a[ptr]+" "\n\t" + "out %[port] , %[next]" "\n\t" + "mov %[next] , %[lo]" "\n\t" + "sbrc %[byte] , 7" "\n\t" + "mov %[next] , %[hi]" "\n\t" + "nop" "\n\t" + "out %[port] , %[lo]" "\n\t" + "sbiw %[count], 1" "\n\t" + "brne headB" "\n\t" + "rjmp doneB" "\n\t" + "bitTimeB:" "\n\t" + "out %[port], %[next]" "\n\t" + "mov %[next], %[lo]" "\n\t" + "rol %[byte]" "\n\t" + "sbrc %[byte], 7" "\n\t" + "mov %[next], %[hi]" "\n\t" + "nop" "\n\t" + "out %[port], %[lo]" "\n\t" + "ret" "\n\t" + "doneB:" "\n" + : [byte] "+r" (b), [next] "+r" (next), [count] "+w" (i) + : [port] "I" (_SFR_IO_ADDR(PORTB)), [ptr] "e" (ptr), [hi] "r" (hi), + [lo] "r" (lo)); + +#ifdef PORTD + } +#endif + +#ifdef NEO_KHZ400 + } else { // 400 KHz + + // 30 instruction clocks per bit: HHHHHHxxxxxxxxxLLLLLLLLLLLLLLL + // ST instructions: ^ ^ ^ (T=0,6,15) + + volatile uint8_t next, bit; + + hi = *port | pinMask; + lo = *port & ~pinMask; + next = lo; + bit = 8; + + asm volatile( + "head30:" "\n\t" // Clk Pseudocode (T = 0) + "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2) + "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128) + "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4) + "rjmp .+0" "\n\t" // 2 nop nop (T = 6) + "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 8) + "rjmp .+0" "\n\t" // 2 nop nop (T = 10) + "rjmp .+0" "\n\t" // 2 nop nop (T = 12) + "rjmp .+0" "\n\t" // 2 nop nop (T = 14) + "nop" "\n\t" // 1 nop (T = 15) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 17) + "rjmp .+0" "\n\t" // 2 nop nop (T = 19) + "dec %[bit]" "\n\t" // 1 bit-- (T = 20) + "breq nextbyte30" "\n\t" // 1-2 if(bit == 0) + "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 22) + "rjmp .+0" "\n\t" // 2 nop nop (T = 24) + "rjmp .+0" "\n\t" // 2 nop nop (T = 26) + "rjmp .+0" "\n\t" // 2 nop nop (T = 28) + "rjmp head30" "\n\t" // 2 -> head30 (next bit out) + "nextbyte30:" "\n\t" // (T = 22) + "nop" "\n\t" // 1 nop (T = 23) + "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 24) + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 26) + "sbiw %[count], 1" "\n\t" // 2 i-- (T = 28) + "brne head30" "\n" // 1-2 if(i != 0) -> (next byte) + : [port] "+e" (port), + [byte] "+r" (b), + [bit] "+r" (bit), + [next] "+r" (next), + [count] "+w" (i) + : [hi] "r" (hi), + [lo] "r" (lo), + [ptr] "e" (ptr)); + } +#endif + +// 16 MHz(ish) AVR -------------------------------------------------------- +#elif (F_CPU >= 15400000UL) && (F_CPU <= 19000000L) + +#ifdef NEO_KHZ400 + if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream +#endif + + // WS2811 and WS2812 have different hi/lo duty cycles; this is + // similar but NOT an exact copy of the prior 400-on-8 code. + + // 20 inst. clocks per bit: HHHHHxxxxxxxxLLLLLLL + // ST instructions: ^ ^ ^ (T=0,5,13) + + volatile uint8_t next, bit; + + hi = *port | pinMask; + lo = *port & ~pinMask; + next = lo; + bit = 8; + + asm volatile( + "head20:" "\n\t" // Clk Pseudocode (T = 0) + "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2) + "sbrc %[byte], 7" "\n\t" // 1-2 if(b & 128) + "mov %[next], %[hi]" "\n\t" // 0-1 next = hi (T = 4) + "dec %[bit]" "\n\t" // 1 bit-- (T = 5) + "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 7) + "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 8) + "breq nextbyte20" "\n\t" // 1-2 if(bit == 0) (from dec above) + "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 10) + "rjmp .+0" "\n\t" // 2 nop nop (T = 12) + "nop" "\n\t" // 1 nop (T = 13) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 15) + "nop" "\n\t" // 1 nop (T = 16) + "rjmp .+0" "\n\t" // 2 nop nop (T = 18) + "rjmp head20" "\n\t" // 2 -> head20 (next bit out) + "nextbyte20:" "\n\t" // (T = 10) + "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 11) + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 13) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 15) + "nop" "\n\t" // 1 nop (T = 16) + "sbiw %[count], 1" "\n\t" // 2 i-- (T = 18) + "brne head20" "\n" // 2 if(i != 0) -> (next byte) + : [port] "+e" (port), + [byte] "+r" (b), + [bit] "+r" (bit), + [next] "+r" (next), + [count] "+w" (i) + : [ptr] "e" (ptr), + [hi] "r" (hi), + [lo] "r" (lo)); + +#ifdef NEO_KHZ400 + } else { // 400 KHz + + // The 400 KHz clock on 16 MHz MCU is the most 'relaxed' version. + + // 40 inst. clocks per bit: HHHHHHHHxxxxxxxxxxxxLLLLLLLLLLLLLLLLLLLL + // ST instructions: ^ ^ ^ (T=0,8,20) + + volatile uint8_t next, bit; + + hi = *port | pinMask; + lo = *port & ~pinMask; + next = lo; + bit = 8; + + asm volatile( + "head40:" "\n\t" // Clk Pseudocode (T = 0) + "st %a[port], %[hi]" "\n\t" // 2 PORT = hi (T = 2) + "sbrc %[byte] , 7" "\n\t" // 1-2 if(b & 128) + "mov %[next] , %[hi]" "\n\t" // 0-1 next = hi (T = 4) + "rjmp .+0" "\n\t" // 2 nop nop (T = 6) + "rjmp .+0" "\n\t" // 2 nop nop (T = 8) + "st %a[port], %[next]" "\n\t" // 2 PORT = next (T = 10) + "rjmp .+0" "\n\t" // 2 nop nop (T = 12) + "rjmp .+0" "\n\t" // 2 nop nop (T = 14) + "rjmp .+0" "\n\t" // 2 nop nop (T = 16) + "rjmp .+0" "\n\t" // 2 nop nop (T = 18) + "rjmp .+0" "\n\t" // 2 nop nop (T = 20) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 22) + "nop" "\n\t" // 1 nop (T = 23) + "mov %[next] , %[lo]" "\n\t" // 1 next = lo (T = 24) + "dec %[bit]" "\n\t" // 1 bit-- (T = 25) + "breq nextbyte40" "\n\t" // 1-2 if(bit == 0) + "rol %[byte]" "\n\t" // 1 b <<= 1 (T = 27) + "nop" "\n\t" // 1 nop (T = 28) + "rjmp .+0" "\n\t" // 2 nop nop (T = 30) + "rjmp .+0" "\n\t" // 2 nop nop (T = 32) + "rjmp .+0" "\n\t" // 2 nop nop (T = 34) + "rjmp .+0" "\n\t" // 2 nop nop (T = 36) + "rjmp .+0" "\n\t" // 2 nop nop (T = 38) + "rjmp head40" "\n\t" // 2 -> head40 (next bit out) + "nextbyte40:" "\n\t" // (T = 27) + "ldi %[bit] , 8" "\n\t" // 1 bit = 8 (T = 28) + "ld %[byte] , %a[ptr]+" "\n\t" // 2 b = *ptr++ (T = 30) + "rjmp .+0" "\n\t" // 2 nop nop (T = 32) + "st %a[port], %[lo]" "\n\t" // 2 PORT = lo (T = 34) + "rjmp .+0" "\n\t" // 2 nop nop (T = 36) + "sbiw %[count], 1" "\n\t" // 2 i-- (T = 38) + "brne head40" "\n" // 1-2 if(i != 0) -> (next byte) + : [port] "+e" (port), + [byte] "+r" (b), + [bit] "+r" (bit), + [next] "+r" (next), + [count] "+w" (i) + : [ptr] "e" (ptr), + [hi] "r" (hi), + [lo] "r" (lo)); + } +#endif + +#else + #error "CPU SPEED NOT SUPPORTED" +#endif + +#elif defined(__arm__) + +#if defined(__MK20DX128__) || defined(__MK20DX256__) // Teensy 3.0 & 3.1 +#define CYCLES_800_T0H (F_CPU / 4000000) +#define CYCLES_800_T1H (F_CPU / 1250000) +#define CYCLES_800 (F_CPU / 800000) +#define CYCLES_400_T0H (F_CPU / 2000000) +#define CYCLES_400_T1H (F_CPU / 833333) +#define CYCLES_400 (F_CPU / 400000) + + uint8_t *p = pixels, + *end = p + numBytes, pix, mask; + volatile uint8_t *set = portSetRegister(pin), + *clr = portClearRegister(pin); + uint32_t cyc; + + ARM_DEMCR |= ARM_DEMCR_TRCENA; + ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA; + +#ifdef NEO_KHZ400 + if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream +#endif + cyc = ARM_DWT_CYCCNT + CYCLES_800; + while(p < end) { + pix = *p++; + for(mask = 0x80; mask; mask >>= 1) { + while(ARM_DWT_CYCCNT - cyc < CYCLES_800); + cyc = ARM_DWT_CYCCNT; + *set = 1; + if(pix & mask) { + while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T1H); + } else { + while(ARM_DWT_CYCCNT - cyc < CYCLES_800_T0H); + } + *clr = 1; + } + } + while(ARM_DWT_CYCCNT - cyc < CYCLES_800); +#ifdef NEO_KHZ400 + } else { // 400 kHz bitstream + cyc = ARM_DWT_CYCCNT + CYCLES_400; + while(p < end) { + pix = *p++; + for(mask = 0x80; mask; mask >>= 1) { + while(ARM_DWT_CYCCNT - cyc < CYCLES_400); + cyc = ARM_DWT_CYCCNT; + *set = 1; + if(pix & mask) { + while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T1H); + } else { + while(ARM_DWT_CYCCNT - cyc < CYCLES_400_T0H); + } + *clr = 1; + } + } + while(ARM_DWT_CYCCNT - cyc < CYCLES_400); + } +#endif + + + + + +#elif defined(__MKL26Z64__) // Teensy-LC + +#if F_CPU == 48000000 + uint8_t *p = pixels, + pix, count, dly, + bitmask = digitalPinToBitMask(pin); + volatile uint8_t *reg = portSetRegister(pin); + uint32_t num = numBytes; + asm volatile( + "L%=_begin:" "\n\t" + "ldrb %[pix], [%[p], #0]" "\n\t" + "lsl %[pix], #24" "\n\t" + "movs %[count], #7" "\n\t" + "L%=_loop:" "\n\t" + "lsl %[pix], #1" "\n\t" + "bcs L%=_loop_one" "\n\t" + "L%=_loop_zero:" + "strb %[bitmask], [%[reg], #0]" "\n\t" + "movs %[dly], #4" "\n\t" + "L%=_loop_delay_T0H:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_loop_delay_T0H" "\n\t" + "strb %[bitmask], [%[reg], #4]" "\n\t" + "movs %[dly], #13" "\n\t" + "L%=_loop_delay_T0L:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_loop_delay_T0L" "\n\t" + "b L%=_next" "\n\t" + "L%=_loop_one:" + "strb %[bitmask], [%[reg], #0]" "\n\t" + "movs %[dly], #13" "\n\t" + "L%=_loop_delay_T1H:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_loop_delay_T1H" "\n\t" + "strb %[bitmask], [%[reg], #4]" "\n\t" + "movs %[dly], #4" "\n\t" + "L%=_loop_delay_T1L:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_loop_delay_T1L" "\n\t" + "nop" "\n\t" + "L%=_next:" "\n\t" + "sub %[count], #1" "\n\t" + "bne L%=_loop" "\n\t" + "lsl %[pix], #1" "\n\t" + "bcs L%=_last_one" "\n\t" + "L%=_last_zero:" + "strb %[bitmask], [%[reg], #0]" "\n\t" + "movs %[dly], #4" "\n\t" + "L%=_last_delay_T0H:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_last_delay_T0H" "\n\t" + "strb %[bitmask], [%[reg], #4]" "\n\t" + "movs %[dly], #10" "\n\t" + "L%=_last_delay_T0L:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_last_delay_T0L" "\n\t" + "b L%=_repeat" "\n\t" + "L%=_last_one:" + "strb %[bitmask], [%[reg], #0]" "\n\t" + "movs %[dly], #13" "\n\t" + "L%=_last_delay_T1H:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_last_delay_T1H" "\n\t" + "strb %[bitmask], [%[reg], #4]" "\n\t" + "movs %[dly], #1" "\n\t" + "L%=_last_delay_T1L:" "\n\t" + "sub %[dly], #1" "\n\t" + "bne L%=_last_delay_T1L" "\n\t" + "nop" "\n\t" + "L%=_repeat:" "\n\t" + "add %[p], #1" "\n\t" + "sub %[num], #1" "\n\t" + "bne L%=_begin" "\n\t" + "L%=_done:" "\n\t" + : [p] "+r" (p), + [pix] "=&r" (pix), + [count] "=&r" (count), + [dly] "=&r" (dly), + [num] "+r" (num) + : [bitmask] "r" (bitmask), + [reg] "r" (reg) + ); +#else +#error "Sorry, only 48 MHz is supported, please set Tools > CPU Speed to 48 MHz" +#endif + + +#else // Arduino Due + + #define SCALE VARIANT_MCK / 2UL / 1000000UL + #define INST (2UL * F_CPU / VARIANT_MCK) + #define TIME_800_0 ((int)(0.40 * SCALE + 0.5) - (5 * INST)) + #define TIME_800_1 ((int)(0.80 * SCALE + 0.5) - (5 * INST)) + #define PERIOD_800 ((int)(1.25 * SCALE + 0.5) - (5 * INST)) + #define TIME_400_0 ((int)(0.50 * SCALE + 0.5) - (5 * INST)) + #define TIME_400_1 ((int)(1.20 * SCALE + 0.5) - (5 * INST)) + #define PERIOD_400 ((int)(2.50 * SCALE + 0.5) - (5 * INST)) + + int pinMask, time0, time1, period, t; + Pio *port; + volatile WoReg *portSet, *portClear, *timeValue, *timeReset; + uint8_t *p, *end, pix, mask; + + pmc_set_writeprotect(false); + pmc_enable_periph_clk((uint32_t)TC3_IRQn); + TC_Configure(TC1, 0, + TC_CMR_WAVE | TC_CMR_WAVSEL_UP | TC_CMR_TCCLKS_TIMER_CLOCK1); + TC_Start(TC1, 0); + + pinMask = g_APinDescription[pin].ulPin; // Don't 'optimize' these into + port = g_APinDescription[pin].pPort; // declarations above. Want to + portSet = &(port->PIO_SODR); // burn a few cycles after + portClear = &(port->PIO_CODR); // starting timer to minimize + timeValue = &(TC1->TC_CHANNEL[0].TC_CV); // the initial 'while'. + timeReset = &(TC1->TC_CHANNEL[0].TC_CCR); + p = pixels; + end = p + numBytes; + pix = *p++; + mask = 0x80; + +#ifdef NEO_KHZ400 + if((type & NEO_SPDMASK) == NEO_KHZ800) { // 800 KHz bitstream +#endif + time0 = TIME_800_0; + time1 = TIME_800_1; + period = PERIOD_800; +#ifdef NEO_KHZ400 + } else { // 400 KHz bitstream + time0 = TIME_400_0; + time1 = TIME_400_1; + period = PERIOD_400; + } +#endif + + for(t = time0;; t = time0) { + if(pix & mask) t = time1; + while(*timeValue < period); + *portSet = pinMask; + *timeReset = TC_CCR_CLKEN | TC_CCR_SWTRG; + while(*timeValue < t); + *portClear = pinMask; + if(!(mask >>= 1)) { // This 'inside-out' loop logic utilizes + if(p >= end) break; // idle time to minimize inter-byte delays. + pix = *p++; + mask = 0x80; + } + } + while(*timeValue < period); // Wait for last bit + TC_Stop(TC1, 0); + +#endif // end Arduino Due + +#endif // end Architecture select + + interrupts(); + endTime = micros(); // Save EOD time for latch on next call +} + +// Set the output pin number +void Adafruit_NeoPixel::setPin(uint8_t p) { + pinMode(pin, INPUT); + pin = p; + pinMode(p, OUTPUT); + digitalWrite(p, LOW); +#ifdef __AVR__ + port = portOutputRegister(digitalPinToPort(p)); + pinMask = digitalPinToBitMask(p); +#endif +} + +// Set pixel color from separate R,G,B components: +void Adafruit_NeoPixel::setPixelColor( + uint16_t n, uint8_t r, uint8_t g, uint8_t b) { + if(n < numLEDs) { + if(brightness) { // See notes in setBrightness() + r = (r * brightness) >> 8; + g = (g * brightness) >> 8; + b = (b * brightness) >> 8; + } + uint8_t *p = &pixels[n * 3]; + p[rOffset] = r; + p[gOffset] = g; + p[bOffset] = b; + } +} + +// Set pixel color from 'packed' 32-bit RGB color: +void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c) { + if(n < numLEDs) { + uint8_t + r = (uint8_t)(c >> 16), + g = (uint8_t)(c >> 8), + b = (uint8_t)c; + if(brightness) { // See notes in setBrightness() + r = (r * brightness) >> 8; + g = (g * brightness) >> 8; + b = (b * brightness) >> 8; + } + uint8_t *p = &pixels[n * 3]; + p[rOffset] = r; + p[gOffset] = g; + p[bOffset] = b; + } +} + +// Convert separate R,G,B into packed 32-bit RGB color. +// Packed format is always RGB, regardless of LED strand color order. +uint32_t Adafruit_NeoPixel::Color(uint8_t r, uint8_t g, uint8_t b) { + return ((uint32_t)r << 16) | ((uint32_t)g << 8) | b; +} + +// Query color from previously-set pixel (returns packed 32-bit RGB value) +uint32_t Adafruit_NeoPixel::getPixelColor(uint16_t n) const { + if(n >= numLEDs) { + // Out of bounds, return no color. + return 0; + } + uint8_t *p = &pixels[n * 3]; + uint32_t c = ((uint32_t)p[rOffset] << 16) | + ((uint32_t)p[gOffset] << 8) | + (uint32_t)p[bOffset]; + // Adjust this back up to the true color, as setting a pixel color will + // scale it back down again. + if(brightness) { // See notes in setBrightness() + //Cast the color to a byte array + uint8_t * c_ptr =reinterpret_cast(&c); + c_ptr[0] = (c_ptr[0] << 8)/brightness; + c_ptr[1] = (c_ptr[1] << 8)/brightness; + c_ptr[2] = (c_ptr[2] << 8)/brightness; + } + return c; // Pixel # is out of bounds +} + +// Returns pointer to pixels[] array. Pixel data is stored in device- +// native format and is not translated here. Application will need to be +// aware whether pixels are RGB vs. GRB and handle colors appropriately. +uint8_t *Adafruit_NeoPixel::getPixels(void) const { + return pixels; +} + +uint16_t Adafruit_NeoPixel::numPixels(void) const { + return numLEDs; +} + +// Adjust output brightness; 0=darkest (off), 255=brightest. This does +// NOT immediately affect what's currently displayed on the LEDs. The +// next call to show() will refresh the LEDs at this level. However, +// this process is potentially "lossy," especially when increasing +// brightness. The tight timing in the WS2811/WS2812 code means there +// aren't enough free cycles to perform this scaling on the fly as data +// is issued. So we make a pass through the existing color data in RAM +// and scale it (subsequent graphics commands also work at this +// brightness level). If there's a significant step up in brightness, +// the limited number of steps (quantization) in the old data will be +// quite visible in the re-scaled version. For a non-destructive +// change, you'll need to re-render the full strip data. C'est la vie. +void Adafruit_NeoPixel::setBrightness(uint8_t b) { + // Stored brightness value is different than what's passed. + // This simplifies the actual scaling math later, allowing a fast + // 8x8-bit multiply and taking the MSB. 'brightness' is a uint8_t, + // adding 1 here may (intentionally) roll over...so 0 = max brightness + // (color values are interpreted literally; no scaling), 1 = min + // brightness (off), 255 = just below max brightness. + uint8_t newBrightness = b + 1; + if(newBrightness != brightness) { // Compare against prior value + // Brightness has changed -- re-scale existing data in RAM + uint8_t c, + *ptr = pixels, + oldBrightness = brightness - 1; // De-wrap old brightness value + uint16_t scale; + if(oldBrightness == 0) scale = 0; // Avoid /0 + else if(b == 255) scale = 65535 / oldBrightness; + else scale = (((uint16_t)newBrightness << 8) - 1) / oldBrightness; + for(uint16_t i=0; i> 8; + } + brightness = newBrightness; + } +} + +//Return the brightness value +uint8_t Adafruit_NeoPixel::getBrightness(void) const { + return brightness - 1; +} + +void Adafruit_NeoPixel::clear() { + memset(pixels, 0, numBytes); +} diff --git a/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.h b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.h new file mode 100644 --- /dev/null +++ b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.h @@ -0,0 +1,97 @@ +/*-------------------------------------------------------------------- + This file is part of the Adafruit NeoPixel library. + + NeoPixel is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation, either version 3 of + the License, or (at your option) any later version. + + NeoPixel is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with NeoPixel. If not, see + . + --------------------------------------------------------------------*/ + +#ifndef ADAFRUIT_NEOPIXEL_H +#define ADAFRUIT_NEOPIXEL_H + +#if (ARDUINO >= 100) + #include +#else + #include + #include +#endif + +// 'type' flags for LED pixels (third parameter to constructor): +#define NEO_RGB 0x00 // Wired for RGB data order +#define NEO_GRB 0x01 // Wired for GRB data order +#define NEO_BRG 0x04 + +#define NEO_COLMASK 0x01 +#define NEO_KHZ800 0x02 // 800 KHz datastream +#define NEO_SPDMASK 0x02 +// Trinket flash space is tight, v1 NeoPixels aren't handled by default. +// Remove the ifndef/endif to add support -- but code will be bigger. +// Conversely, can comment out the #defines to save space on other MCUs. +#ifndef __AVR_ATtiny85__ +#define NEO_KHZ400 0x00 // 400 KHz datastream +#endif + +class Adafruit_NeoPixel { + + public: + + // Constructor: number of LEDs, pin number, LED type + Adafruit_NeoPixel(uint16_t n, uint8_t p=6, uint8_t t=NEO_GRB + NEO_KHZ800); + ~Adafruit_NeoPixel(); + + void + begin(void), + show(void), + setPin(uint8_t p), + setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b), + setPixelColor(uint16_t n, uint32_t c), + setBrightness(uint8_t), + clear(); + uint8_t + *getPixels(void) const, + getBrightness(void) const; + uint16_t + numPixels(void) const; + static uint32_t + Color(uint8_t r, uint8_t g, uint8_t b); + uint32_t + getPixelColor(uint16_t n) const; + inline bool + canShow(void) { return (micros() - endTime) >= 50L; } + + private: + + const uint16_t + numLEDs, // Number of RGB LEDs in strip + numBytes; // Size of 'pixels' buffer below + uint8_t + pin, // Output pin number + brightness, + *pixels, // Holds LED color values (3 bytes each) + rOffset, // Index of red byte within each 3-byte pixel + gOffset, // Index of green byte + bOffset; // Index of blue byte + const uint8_t + type; // Pixel flags (400 vs 800 KHz, RGB vs GRB color) + uint32_t + endTime; // Latch timing reference +#ifdef __AVR__ + const volatile uint8_t + *port; // Output PORT register + uint8_t + pinMask; // Output PORT bitmask +#endif + +}; + +#endif // ADAFRUIT_NEOPIXEL_H diff --git a/rgbled/Adafruit_NeoPixel/COPYING b/rgbled/Adafruit_NeoPixel/COPYING new file mode 100644 --- /dev/null +++ b/rgbled/Adafruit_NeoPixel/COPYING @@ -0,0 +1,794 @@ + + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Restart Arduino IDE, then open File->Sketchbook->Library->Adafruit_NeoPixel->strandtest sketch. + +[flora]: http://adafruit.com/products/1060 +[strip]: http://adafruit.com/products/1138 +[pixel]: http://adafruit.com/products/1312 +[stick]: http://adafruit.com/products/1426 +[shield]: http://adafruit.com/products/1430 diff --git a/rgbled/Adafruit_NeoPixel/keywords.txt b/rgbled/Adafruit_NeoPixel/keywords.txt new file mode 100644 --- /dev/null +++ b/rgbled/Adafruit_NeoPixel/keywords.txt @@ -0,0 +1,29 @@ +####################################### +# Syntax Coloring Map For Adafruit_NeoPixel +####################################### +# Class +####################################### + +Adafruit_NeoPixel KEYWORD1 + +####################################### +# Methods and Functions +####################################### + +setPixelColor KEYWORD2 +setPin KEYWORD2 +setBrightness KEYWORD2 +numPixels KEYWORD2 +getPixelColor KEYWORD2 +Color KEYWORD2 + +####################################### +# Constants +####################################### + +NEO_GRB LITERAL1 +NEO_COLMASK LITERAL1 +NEO_KHZ800 LITERAL1 +NEO_SPDMASK LITERAL1 +NEO_RGB LITERAL1 +NEO_KHZ400 LITERAL1 diff --git a/rgbled/Adafruit_NeoPixel/library.properties b/rgbled/Adafruit_NeoPixel/library.properties new file mode 100644 --- /dev/null +++ b/rgbled/Adafruit_NeoPixel/library.properties @@ -0,0 +1,9 @@ +name=Adafruit NeoPixel +version=1.0 +author=Adafruit +maintainer=Adafruit +sentence=Arduino library for controlling single-wire-based LED pixels and strip. +paragraph=Arduino library for controlling single-wire-based LED pixels and strip. +category=Display +url=https://github.com/adafruit/Adafruit_NeoPixel +architectures=* diff --git a/rgbled/makefile b/rgbled/makefile new file mode 100644 --- /dev/null +++ b/rgbled/makefile @@ -0,0 +1,5 @@ +BOARD_TAG = nano328 +ARDUINO_LIBS = Adafruit_NeoPixel +USER_LIB_PATH := $(realpath .) + +include /usr/share/arduino/Arduino.mk diff --git a/rgbled/nanostrip.cc b/rgbled/nanostrip.cc new file mode 100644 --- /dev/null +++ b/rgbled/nanostrip.cc @@ -0,0 +1,60 @@ +#include +#include + +// Parameter 1 = number of pixels in strip +// Parameter 2 = pin number (most are valid) +// Parameter 3 = pixel type flags, add together as needed: +// NEO_RGB Pixels are wired for RGB bitstream +// NEO_GRB Pixels are wired for GRB bitstream +// NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels) +// NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip) +Adafruit_NeoPixel strip = Adafruit_NeoPixel(50, 5, NEO_RGB + NEO_KHZ800); + +// max about 26 with malloc; 36 works with a static array in the class + +#define debugLed 13 +void intro() { + uint32_t red = strip.Color(255,0,0), black = strip.Color(0,0,0); + strip.setPixelColor(0, red); strip.show(); delay(100); + strip.setPixelColor(0, black); strip.show(); delay(100); + strip.setPixelColor(0, red); strip.show(); delay(100); + strip.setPixelColor(0, black); strip.show(); delay(100); +} +int main(void) { + init(); + pinMode(debugLed, OUTPUT); + strip.begin(); + intro(); + Serial.begin(115200); + + uint8_t i,r,g,b; + while (1) { + while (Serial.available() <= 2) { + } + i = Serial.read(); + if (i != 0x60) { + continue; + } + i = Serial.read(); // command + if (i == 0) { // set strip: 0x60 0x00 + digitalWrite(debugLed, 1); + for (i=0; i < strip.numPixels(); i++) { + while (Serial.available() < 3) { + } + r = Serial.read(); + g = Serial.read(); + b = Serial.read(); + strip.setPixelColor(i, strip.Color(g, r, b)); + } + strip.show(); + + digitalWrite(debugLed, 0); + } else if (i == 1) { // set pwm on D3: 0x60 0x01 + while (Serial.available() < 1) { + } + analogWrite(3, Serial.read()); + } else { + // unknown command + } + } +}