Mercurial > code > home > repos > light9
changeset 1231:ef4ae15f2661
copy in rgb led program for arduino
Ignore-this: ee63cf3e2100597625a4392bd95aba0d
| author | Drew Perttula <drewp@bigasterisk.com> |
|---|---|
| date | Wed, 10 Jun 2015 04:55:39 +0000 |
| parents | 23377f8efd09 |
| children | beb0688cbfd8 |
| files | rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.h rgbled/Adafruit_NeoPixel/COPYING rgbled/Adafruit_NeoPixel/README.md rgbled/Adafruit_NeoPixel/keywords.txt rgbled/Adafruit_NeoPixel/library.properties rgbled/makefile rgbled/nanostrip.cc |
| diffstat | 8 files changed, 2035 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.cpp Wed Jun 10 04:55:39 2015 +0000 @@ -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 + <http://www.gnu.org/licenses/>. + -------------------------------------------------------------------------*/ + +#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<uint8_t*>(&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<numBytes; i++) { + c = *ptr; + *ptr++ = (c * scale) >> 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); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/Adafruit_NeoPixel.h Wed Jun 10 04:55:39 2015 +0000 @@ -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 + <http://www.gnu.org/licenses/>. + --------------------------------------------------------------------*/ + +#ifndef ADAFRUIT_NEOPIXEL_H +#define ADAFRUIT_NEOPIXEL_H + +#if (ARDUINO >= 100) + #include <Arduino.h> +#else + #include <WProgram.h> + #include <pins_arduino.h> +#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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/COPYING Wed Jun 10 04:55:39 2015 +0000 @@ -0,0 +1,794 @@ + + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + 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. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + + To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. You must make sure that they, too, receive +or can get the source code. And you must show them these terms so they +know their rights. + + Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + + For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. + + Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + + Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + + The precise terms and conditions for copying, distribution and +modification follow. + + TERMS AND CONDITIONS + + 0. Definitions. + + "This License" refers to version 3 of the GNU General Public License. + + "Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + + "The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + + To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + + A "covered work" means either the unmodified Program or a work based +on the Program. + + To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + + To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + + An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + + 1. Source Code. + + The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + + A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + + The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + + The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + + The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + + The Corresponding Source for a work in source code form is that +same work. + + 2. Basic Permissions. + + All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + + You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + + Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + + 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + + No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + + When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + + 4. Conveying Verbatim Copies. + + You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + + You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + + 5. Conveying Modified Source Versions. + + You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + + a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. + + b) The work must carry prominent notices stating that it is + released under this License and any conditions added under section + 7. This requirement modifies the requirement in section 4 to + "keep intact all notices". + + c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. + + d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + + A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + + 6. Conveying Non-Source Forms. + + You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + + a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. + + b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the + Corresponding Source from a network server at no charge. + + c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. This + alternative is allowed only occasionally and noncommercially, and + only if you received the object code with such an offer, in accord + with subsection 6b. + + d) Convey the object code by offering access from a designated + place (gratis or for a charge), and offer equivalent access to the + Corresponding Source in the same way through the same place at no + further charge. You need not require recipients to copy the + Corresponding Source along with the object code. If the place to + copy the object code is a network server, the Corresponding Source + may be on a different server (operated by you or a third party) + that supports equivalent copying facilities, provided you maintain + clear directions next to the object code saying where to find the + Corresponding Source. Regardless of what server hosts the + Corresponding Source, you remain obligated to ensure that it is + available for as long as needed to satisfy these requirements. + + e) Convey the object code using peer-to-peer transmission, provided + you inform other peers where the object code and Corresponding + Source of the work are being offered to the general public at no + charge under subsection 6d. + + A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + + A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + + "Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + + If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + + The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + + Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + + 7. Additional Terms. + + "Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + + When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + + Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + + a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or + + b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or + + c) Prohibiting misrepresentation of the origin of that material, or + requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or + + d) Limiting the use for publicity purposes of names of licensors or + authors of the material; or + + e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or + + f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions of + it) with contractual assumptions of liability to the recipient, for + any liability that these contractual assumptions directly impose on + those licensors and authors. + + All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + + If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + + Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + + 8. Termination. + + You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + + However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + + Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + + Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + + 9. Acceptance Not Required for Having Copies. + + You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + + 10. Automatic Licensing of Downstream Recipients. + + Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + + An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + + You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + + 11. Patents. + + A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + + A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + + Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + + In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + + If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + + If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + + A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + + Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + + 12. No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + + 13. Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + + +LGPL ADDENDUM: + + + + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. The particular version of the Library +with which the Combined Work was made is also called the "Linked +Version". + + The "Minimal Corresponding Source" for a Combined Work means the +Corresponding Source for the Combined Work, excluding any source code +for portions of the Combined Work that, considered in isolation, are +based on the Application, and not on the Linked Version. + + The "Corresponding Application Code" for a Combined Work means the +object code and/or source code for the Application, including any data +and utility programs needed for reproducing the Combined Work from the +Application, but excluding the System Libraries of the Combined Work. + + 1. Exception to Section 3 of the GNU GPL. + + You may convey a covered work under sections 3 and 4 of this License +without being bound by section 3 of the GNU GPL. + + 2. Conveying Modified Versions. + + If you modify a copy of the Library, and, in your modifications, a +facility refers to a function or data to be supplied by an Application +that uses the facility (other than as an argument passed when the +facility is invoked), then you may convey a copy of the modified +version: + + a) under this License, provided that you make a good faith effort to + ensure that, in the event an Application does not supply the + function or data, the facility still operates, and performs + whatever part of its purpose remains meaningful, or + + b) under the GNU GPL, with none of the additional permissions of + this License applicable to that copy. + + 3. Object Code Incorporating Material from Library Header Files. + + The object code form of an Application may incorporate material from +a header file that is part of the Library. You may convey such object +code under terms of your choice, provided that, if the incorporated +material is not limited to numerical parameters, data structure +layouts and accessors, or small macros, inline functions and templates +(ten or fewer lines in length), you do both of the following: + + a) Give prominent notice with each copy of the object code that the + Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the object code with a copy of the GNU GPL and this license + document. + + 4. Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (a) uses at run time + a copy of the Library already present on the user's computer + system, and (b) will operate properly with a modified version + of the Library that is interface-compatible with the Linked + Version. + + e) Provide Installation Information, but only if you would otherwise + be required to provide such information under section 6 of the + GNU GPL, and only to the extent that such information is + necessary to install and execute a modified version of the + Combined Work produced by recombining or relinking the + Application with a modified version of the Linked Version. (If + you use option 4d0, the Installation Information must accompany + the Minimal Corresponding Source and Corresponding Application + Code. If you use option 4d1, you must provide the Installation + Information in the manner specified by section 6 of the GNU GPL + for conveying Corresponding Source.) + + 5. Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/README.md Wed Jun 10 04:55:39 2015 +0000 @@ -0,0 +1,12 @@ +Adafruit NeoPixel library +========================= + +Arduino library for controlling single-wire-based LED pixels and strip such as the [Adafruit 60 LED/meter Digital LED strip][strip], the [Adafruit FLORA RGB Smart Pixel][flora], the [Adafruit Breadboard-friendly RGB Smart Pixel][pixel], the [Adafruit NeoPixel Stick][stick], and the [Adafruit NeoPixel Shield][shield]. + +After downloading, rename folder to 'Adafruit_NeoPixel' and install in Arduino Libraries folder. 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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/keywords.txt Wed Jun 10 04:55:39 2015 +0000 @@ -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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/Adafruit_NeoPixel/library.properties Wed Jun 10 04:55:39 2015 +0000 @@ -0,0 +1,9 @@ +name=Adafruit NeoPixel +version=1.0 +author=Adafruit +maintainer=Adafruit <info@adafruit.com> +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=*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/makefile Wed Jun 10 04:55:39 2015 +0000 @@ -0,0 +1,5 @@ +BOARD_TAG = nano328 +ARDUINO_LIBS = Adafruit_NeoPixel +USER_LIB_PATH := $(realpath .) + +include /usr/share/arduino/Arduino.mk
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rgbled/nanostrip.cc Wed Jun 10 04:55:39 2015 +0000 @@ -0,0 +1,60 @@ +#include <Arduino.h> +#include <Adafruit_NeoPixel.h> + +// 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 <numPixels * 3 bytes> + 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 <level> + while (Serial.available() < 1) { + } + analogWrite(3, Serial.read()); + } else { + // unknown command + } + } +}