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Revert "Update Adafruit_NeoPixel library to commit fd74287"

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Software/src/lib/adafruit-Adafruit_NeoPixel/Adafruit_NeoPixel.cpp
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Software/src/lib/adafruit-Adafruit_NeoPixel/Adafruit_NeoPixel.h
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@ -33,390 +33,380 @@
* *
*/ */
#ifndef ADAFRUIT_NEOPIXEL_H #ifndef ADAFRUIT_NEOPIXEL_H
#define ADAFRUIT_NEOPIXEL_H #define ADAFRUIT_NEOPIXEL_H
#ifdef ARDUINO #ifdef ARDUINO
#if (ARDUINO >= 100) #if (ARDUINO >= 100)
#include <Arduino.h> #include <Arduino.h>
#else #else
#include <WProgram.h> #include <WProgram.h>
#include <pins_arduino.h> #include <pins_arduino.h>
#endif #endif
#ifdef USE_TINYUSB // For Serial when selecting TinyUSB #ifdef USE_TINYUSB // For Serial when selecting TinyUSB
#include <Adafruit_TinyUSB.h> #include <Adafruit_TinyUSB.h>
#endif #endif
#endif #endif
#ifdef TARGET_LPC1768 #ifdef TARGET_LPC1768
#include <Arduino.h> #include <Arduino.h>
#endif #endif
#if defined(ARDUINO_ARCH_RP2040) #if defined(ARDUINO_ARCH_RP2040)
#include <stdlib.h> #include <stdlib.h>
#include "hardware/pio.h" #include "hardware/pio.h"
#include "hardware/clocks.h" #include "hardware/clocks.h"
#include "rp2040_pio.h" #include "rp2040_pio.h"
#endif #endif
// The order of primary colors in the NeoPixel data stream can vary among // The order of primary colors in the NeoPixel data stream can vary among
// device types, manufacturers and even different revisions of the same // device types, manufacturers and even different revisions of the same
// item. The third parameter to the Adafruit_NeoPixel constructor encodes // item. The third parameter to the Adafruit_NeoPixel constructor encodes
// the per-pixel byte offsets of the red, green and blue primaries (plus // the per-pixel byte offsets of the red, green and blue primaries (plus
// white, if present) in the data stream -- the following #defines provide // white, if present) in the data stream -- the following #defines provide
// an easier-to-use named version for each permutation. e.g. NEO_GRB // an easier-to-use named version for each permutation. e.g. NEO_GRB
// indicates a NeoPixel-compatible device expecting three bytes per pixel, // indicates a NeoPixel-compatible device expecting three bytes per pixel,
// with the first byte transmitted containing the green value, second // with the first byte transmitted containing the green value, second
// containing red and third containing blue. The in-memory representation // containing red and third containing blue. The in-memory representation
// of a chain of NeoPixels is the same as the data-stream order; no // of a chain of NeoPixels is the same as the data-stream order; no
// re-ordering of bytes is required when issuing data to the chain. // re-ordering of bytes is required when issuing data to the chain.
// Most of these values won't exist in real-world devices, but it's done // Most of these values won't exist in real-world devices, but it's done
// this way so we're ready for it (also, if using the WS2811 driver IC, // this way so we're ready for it (also, if using the WS2811 driver IC,
// one might have their pixels set up in any weird permutation). // one might have their pixels set up in any weird permutation).
// Bits 5,4 of this value are the offset (0-3) from the first byte of a // Bits 5,4 of this value are the offset (0-3) from the first byte of a
// pixel to the location of the red color byte. Bits 3,2 are the green // pixel to the location of the red color byte. Bits 3,2 are the green
// offset and 1,0 are the blue offset. If it is an RGBW-type device // offset and 1,0 are the blue offset. If it is an RGBW-type device
// (supporting a white primary in addition to R,G,B), bits 7,6 are the // (supporting a white primary in addition to R,G,B), bits 7,6 are the
// offset to the white byte...otherwise, bits 7,6 are set to the same value // offset to the white byte...otherwise, bits 7,6 are set to the same value
// as 5,4 (red) to indicate an RGB (not RGBW) device. // as 5,4 (red) to indicate an RGB (not RGBW) device.
// i.e. binary representation: // i.e. binary representation:
// 0bWWRRGGBB for RGBW devices // 0bWWRRGGBB for RGBW devices
// 0bRRRRGGBB for RGB // 0bRRRRGGBB for RGB
// RGB NeoPixel permutations; white and red offsets are always same // RGB NeoPixel permutations; white and red offsets are always same
// Offset: W R G B // Offset: W R G B
#define NEO_RGB ((0 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B #define NEO_RGB ((0 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B
#define NEO_RBG ((0 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G #define NEO_RBG ((0 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G
#define NEO_GRB ((1 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B #define NEO_GRB ((1 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B
#define NEO_GBR ((2 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R #define NEO_GBR ((2 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R
#define NEO_BRG ((1 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G #define NEO_BRG ((1 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G
#define NEO_BGR ((2 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R #define NEO_BGR ((2 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R
// RGBW NeoPixel permutations; all 4 offsets are distinct // RGBW NeoPixel permutations; all 4 offsets are distinct
// Offset: W R G B // Offset: W R G B
#define NEO_WRGB ((0 << 6) | (1 << 4) | (2 << 2) | (3)) ///< Transmit as W,R,G,B #define NEO_WRGB ((0 << 6) | (1 << 4) | (2 << 2) | (3)) ///< Transmit as W,R,G,B
#define NEO_WRBG ((0 << 6) | (1 << 4) | (3 << 2) | (2)) ///< Transmit as W,R,B,G #define NEO_WRBG ((0 << 6) | (1 << 4) | (3 << 2) | (2)) ///< Transmit as W,R,B,G
#define NEO_WGRB ((0 << 6) | (2 << 4) | (1 << 2) | (3)) ///< Transmit as W,G,R,B #define NEO_WGRB ((0 << 6) | (2 << 4) | (1 << 2) | (3)) ///< Transmit as W,G,R,B
#define NEO_WGBR ((0 << 6) | (3 << 4) | (1 << 2) | (2)) ///< Transmit as W,G,B,R #define NEO_WGBR ((0 << 6) | (3 << 4) | (1 << 2) | (2)) ///< Transmit as W,G,B,R
#define NEO_WBRG ((0 << 6) | (2 << 4) | (3 << 2) | (1)) ///< Transmit as W,B,R,G #define NEO_WBRG ((0 << 6) | (2 << 4) | (3 << 2) | (1)) ///< Transmit as W,B,R,G
#define NEO_WBGR ((0 << 6) | (3 << 4) | (2 << 2) | (1)) ///< Transmit as W,B,G,R #define NEO_WBGR ((0 << 6) | (3 << 4) | (2 << 2) | (1)) ///< Transmit as W,B,G,R
#define NEO_RWGB ((1 << 6) | (0 << 4) | (2 << 2) | (3)) ///< Transmit as R,W,G,B #define NEO_RWGB ((1 << 6) | (0 << 4) | (2 << 2) | (3)) ///< Transmit as R,W,G,B
#define NEO_RWBG ((1 << 6) | (0 << 4) | (3 << 2) | (2)) ///< Transmit as R,W,B,G #define NEO_RWBG ((1 << 6) | (0 << 4) | (3 << 2) | (2)) ///< Transmit as R,W,B,G
#define NEO_RGWB ((2 << 6) | (0 << 4) | (1 << 2) | (3)) ///< Transmit as R,G,W,B #define NEO_RGWB ((2 << 6) | (0 << 4) | (1 << 2) | (3)) ///< Transmit as R,G,W,B
#define NEO_RGBW ((3 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B,W #define NEO_RGBW ((3 << 6) | (0 << 4) | (1 << 2) | (2)) ///< Transmit as R,G,B,W
#define NEO_RBWG ((2 << 6) | (0 << 4) | (3 << 2) | (1)) ///< Transmit as R,B,W,G #define NEO_RBWG ((2 << 6) | (0 << 4) | (3 << 2) | (1)) ///< Transmit as R,B,W,G
#define NEO_RBGW ((3 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G,W #define NEO_RBGW ((3 << 6) | (0 << 4) | (2 << 2) | (1)) ///< Transmit as R,B,G,W
#define NEO_GWRB ((1 << 6) | (2 << 4) | (0 << 2) | (3)) ///< Transmit as G,W,R,B #define NEO_GWRB ((1 << 6) | (2 << 4) | (0 << 2) | (3)) ///< Transmit as G,W,R,B
#define NEO_GWBR ((1 << 6) | (3 << 4) | (0 << 2) | (2)) ///< Transmit as G,W,B,R #define NEO_GWBR ((1 << 6) | (3 << 4) | (0 << 2) | (2)) ///< Transmit as G,W,B,R
#define NEO_GRWB ((2 << 6) | (1 << 4) | (0 << 2) | (3)) ///< Transmit as G,R,W,B #define NEO_GRWB ((2 << 6) | (1 << 4) | (0 << 2) | (3)) ///< Transmit as G,R,W,B
#define NEO_GRBW ((3 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B,W #define NEO_GRBW ((3 << 6) | (1 << 4) | (0 << 2) | (2)) ///< Transmit as G,R,B,W
#define NEO_GBWR ((2 << 6) | (3 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,W,R #define NEO_GBWR ((2 << 6) | (3 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,W,R
#define NEO_GBRW ((3 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R,W #define NEO_GBRW ((3 << 6) | (2 << 4) | (0 << 2) | (1)) ///< Transmit as G,B,R,W
#define NEO_BWRG ((1 << 6) | (2 << 4) | (3 << 2) | (0)) ///< Transmit as B,W,R,G #define NEO_BWRG ((1 << 6) | (2 << 4) | (3 << 2) | (0)) ///< Transmit as B,W,R,G
#define NEO_BWGR ((1 << 6) | (3 << 4) | (2 << 2) | (0)) ///< Transmit as B,W,G,R #define NEO_BWGR ((1 << 6) | (3 << 4) | (2 << 2) | (0)) ///< Transmit as B,W,G,R
#define NEO_BRWG ((2 << 6) | (1 << 4) | (3 << 2) | (0)) ///< Transmit as B,R,W,G #define NEO_BRWG ((2 << 6) | (1 << 4) | (3 << 2) | (0)) ///< Transmit as B,R,W,G
#define NEO_BRGW ((3 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G,W #define NEO_BRGW ((3 << 6) | (1 << 4) | (2 << 2) | (0)) ///< Transmit as B,R,G,W
#define NEO_BGWR ((2 << 6) | (3 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,W,R #define NEO_BGWR ((2 << 6) | (3 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,W,R
#define NEO_BGRW ((3 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R,W #define NEO_BGRW ((3 << 6) | (2 << 4) | (1 << 2) | (0)) ///< Transmit as B,G,R,W
// Add NEO_KHZ400 to the color order value to indicate a 400 KHz device. // Add NEO_KHZ400 to the color order value to indicate a 400 KHz device.
// All but the earliest v1 NeoPixels expect an 800 KHz data stream, this is // All but the earliest v1 NeoPixels expect an 800 KHz data stream, this is
// the default if unspecified. Because flash space is very limited on ATtiny // the default if unspecified. Because flash space is very limited on ATtiny
// devices (e.g. Trinket, Gemma), v1 NeoPixels aren't handled by default on // devices (e.g. Trinket, Gemma), v1 NeoPixels aren't handled by default on
// those chips, though it can be enabled by removing the ifndef/endif below, // those chips, though it can be enabled by removing the ifndef/endif below,
// but code will be bigger. Conversely, can disable the NEO_KHZ400 line on // but code will be bigger. Conversely, can disable the NEO_KHZ400 line on
// other MCUs to remove v1 support and save a little space. // other MCUs to remove v1 support and save a little space.
#define NEO_KHZ800 0x0000 ///< 800 KHz data transmission #define NEO_KHZ800 0x0000 ///< 800 KHz data transmission
#ifndef __AVR_ATtiny85__ #ifndef __AVR_ATtiny85__
#define NEO_KHZ400 0x0100 ///< 400 KHz data transmission #define NEO_KHZ400 0x0100 ///< 400 KHz data transmission
#endif #endif
// If 400 KHz support is enabled, the third parameter to the constructor // If 400 KHz support is enabled, the third parameter to the constructor
// requires a 16-bit value (in order to select 400 vs 800 KHz speed). // requires a 16-bit value (in order to select 400 vs 800 KHz speed).
// If only 800 KHz is enabled (as is default on ATtiny), an 8-bit value // If only 800 KHz is enabled (as is default on ATtiny), an 8-bit value
// is sufficient to encode pixel color order, saving some space. // is sufficient to encode pixel color order, saving some space.
#ifdef NEO_KHZ400 #ifdef NEO_KHZ400
typedef uint16_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor typedef uint16_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor
#else #else
typedef uint8_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor typedef uint8_t neoPixelType; ///< 3rd arg to Adafruit_NeoPixel constructor
#endif #endif
// These two tables are declared outside the Adafruit_NeoPixel class // These two tables are declared outside the Adafruit_NeoPixel class
// because some boards may require oldschool compilers that don't // because some boards may require oldschool compilers that don't
// handle the C++11 constexpr keyword. // handle the C++11 constexpr keyword.
/* A PROGMEM (flash mem) table containing 8-bit unsigned sine wave (0-255). /* A PROGMEM (flash mem) table containing 8-bit unsigned sine wave (0-255).
Copy & paste this snippet into a Python REPL to regenerate: Copy & paste this snippet into a Python REPL to regenerate:
import math import math
for x in range(256): for x in range(256):
print("{:3},".format(int((math.sin(x/128.0*math.pi)+1.0)*127.5+0.5))), print("{:3},".format(int((math.sin(x/128.0*math.pi)+1.0)*127.5+0.5))),
if x&15 == 15: print if x&15 == 15: print
*/ */
static const uint8_t PROGMEM _NeoPixelSineTable[256] = { static const uint8_t PROGMEM _NeoPixelSineTable[256] = {
128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170, 128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170,
173, 176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211, 173, 176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211,
213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240, 213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240,
241, 243, 244, 245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254, 241, 243, 244, 245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254,
254, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251, 254, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251,
250, 250, 249, 248, 246, 245, 244, 243, 241, 240, 238, 237, 235, 234, 232, 250, 250, 249, 248, 246, 245, 244, 243, 241, 240, 238, 237, 235, 234, 232,
230, 228, 226, 224, 222, 220, 218, 215, 213, 211, 208, 206, 203, 201, 198, 230, 228, 226, 224, 222, 220, 218, 215, 213, 211, 208, 206, 203, 201, 198,
196, 193, 190, 188, 185, 182, 179, 176, 173, 170, 167, 165, 162, 158, 155, 196, 193, 190, 188, 185, 182, 179, 176, 173, 170, 167, 165, 162, 158, 155,
152, 149, 146, 143, 140, 137, 134, 131, 128, 124, 121, 118, 115, 112, 109, 152, 149, 146, 143, 140, 137, 134, 131, 128, 124, 121, 118, 115, 112, 109,
106, 103, 100, 97, 93, 90, 88, 85, 82, 79, 76, 73, 70, 67, 65, 106, 103, 100, 97, 93, 90, 88, 85, 82, 79, 76, 73, 70, 67, 65,
62, 59, 57, 54, 52, 49, 47, 44, 42, 40, 37, 35, 33, 31, 29, 62, 59, 57, 54, 52, 49, 47, 44, 42, 40, 37, 35, 33, 31, 29,
27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11, 10, 9, 7, 6, 27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11, 10, 9, 7, 6,
5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 9, 10, 11, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 9, 10, 11,
12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35, 37, 12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35, 37,
40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76, 40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76,
79, 82, 85, 88, 90, 93, 97, 100, 103, 106, 109, 112, 115, 118, 121, 79, 82, 85, 88, 90, 93, 97, 100, 103, 106, 109, 112, 115, 118, 121,
124}; 124};
/* Similar to above, but for an 8-bit gamma-correction table. /* Similar to above, but for an 8-bit gamma-correction table.
Copy & paste this snippet into a Python REPL to regenerate: Copy & paste this snippet into a Python REPL to regenerate:
import math import math
gamma=2.6 gamma=2.6
for x in range(256): for x in range(256):
print("{:3},".format(int(math.pow((x)/255.0,gamma)*255.0+0.5))), print("{:3},".format(int(math.pow((x)/255.0,gamma)*255.0+0.5))),
if x&15 == 15: print if x&15 == 15: print
*/ */
static const uint8_t PROGMEM _NeoPixelGammaTable[256] = { static const uint8_t PROGMEM _NeoPixelGammaTable[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3,
3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6,
6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10,
11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16, 17, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16, 17,
17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35,
36, 37, 38, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 48, 36, 37, 38, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 80, 81, 64, 65, 66, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 80, 81,
82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96, 97, 99, 100, 102, 82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96, 97, 99, 100, 102,
103, 105, 106, 108, 109, 111, 112, 114, 115, 117, 119, 120, 122, 124, 125, 103, 105, 106, 108, 109, 111, 112, 114, 115, 117, 119, 120, 122, 124, 125,
127, 129, 130, 132, 134, 136, 137, 139, 141, 143, 145, 146, 148, 150, 152, 127, 129, 130, 132, 134, 136, 137, 139, 141, 143, 145, 146, 148, 150, 152,
154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182,
184, 186, 188, 191, 193, 195, 197, 199, 202, 204, 206, 209, 211, 213, 215, 184, 186, 188, 191, 193, 195, 197, 199, 202, 204, 206, 209, 211, 213, 215,
218, 220, 223, 225, 227, 230, 232, 235, 237, 240, 242, 245, 247, 250, 252, 218, 220, 223, 225, 227, 230, 232, 235, 237, 240, 242, 245, 247, 250, 252,
255}; 255};
/* Declare external methods required by the Adafruit_NeoPixel implementation /*!
for specific hardware/library versions @brief Class that stores state and functions for interacting with
*/ Adafruit NeoPixels and compatible devices.
#if defined(ESP32) */
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0) class Adafruit_NeoPixel {
extern "C" void espInit();
#endif
#endif
/*! public:
@brief Class that stores state and functions for interacting with // Constructor: number of LEDs, pin number, LED type
Adafruit NeoPixels and compatible devices. Adafruit_NeoPixel(uint16_t n, int16_t pin = 6,
*/ neoPixelType type = NEO_GRB + NEO_KHZ800);
class Adafruit_NeoPixel { Adafruit_NeoPixel(void);
~Adafruit_NeoPixel();
public: void begin(void);
// Constructor: number of LEDs, pin number, LED type void show(void);
Adafruit_NeoPixel(uint16_t n, int16_t pin = 6, void setPin(int16_t p);
neoPixelType type = NEO_GRB + NEO_KHZ800); void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
Adafruit_NeoPixel(void); void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b, uint8_t w);
~Adafruit_NeoPixel(); void setPixelColor(uint16_t n, uint32_t c);
void fill(uint32_t c = 0, uint16_t first = 0, uint16_t count = 0);
void setBrightness(uint8_t);
void clear(void);
void updateLength(uint16_t n);
void updateType(neoPixelType t);
/*!
@brief Check whether a call to show() will start sending data
immediately or will 'block' for a required interval. NeoPixels
require a short quiet time (about 300 microseconds) after the
last bit is received before the data 'latches' and new data can
start being received. Usually one's sketch is implicitly using
this time to generate a new frame of animation...but if it
finishes very quickly, this function could be used to see if
there's some idle time available for some low-priority
concurrent task.
@return 1 or true if show() will start sending immediately, 0 or false
if show() would block (meaning some idle time is available).
*/
bool canShow(void) {
// It's normal and possible for endTime to exceed micros() if the
// 32-bit clock counter has rolled over (about every 70 minutes).
// Since both are uint32_t, a negative delta correctly maps back to
// positive space, and it would seem like the subtraction below would
// suffice. But a problem arises if code invokes show() very
// infrequently...the micros() counter may roll over MULTIPLE times in
// that interval, the delta calculation is no longer correct and the
// next update may stall for a very long time. The check below resets
// the latch counter if a rollover has occurred. This can cause an
// extra delay of up to 300 microseconds in the rare case where a
// show() call happens precisely around the rollover, but that's
// neither likely nor especially harmful, vs. other code that might
// stall for 30+ minutes, or having to document and frequently remind
// and/or provide tech support explaining an unintuitive need for
// show() calls at least once an hour.
uint32_t now = micros();
if (endTime > now) {
endTime = now;
}
return (now - endTime) >= 300L;
}
/*!
@brief Get a pointer directly to the NeoPixel data buffer in RAM.
Pixel data is stored in a device-native format (a la the NEO_*
constants) and is not translated here. Applications that access
this buffer will need to be aware of the specific data format
and handle colors appropriately.
@return Pointer to NeoPixel buffer (uint8_t* array).
@note This is for high-performance applications where calling
setPixelColor() on every single pixel would be too slow (e.g.
POV or light-painting projects). There is no bounds checking
on the array, creating tremendous potential for mayhem if one
writes past the ends of the buffer. Great power, great
responsibility and all that.
*/
uint8_t *getPixels(void) const { return pixels; };
uint8_t getBrightness(void) const;
/*!
@brief Retrieve the pin number used for NeoPixel data output.
@return Arduino pin number (-1 if not set).
*/
int16_t getPin(void) const { return pin; };
/*!
@brief Return the number of pixels in an Adafruit_NeoPixel strip object.
@return Pixel count (0 if not set).
*/
uint16_t numPixels(void) const { return numLEDs; }
uint32_t getPixelColor(uint16_t n) const;
/*!
@brief An 8-bit integer sine wave function, not directly compatible
with standard trigonometric units like radians or degrees.
@param x Input angle, 0-255; 256 would loop back to zero, completing
the circle (equivalent to 360 degrees or 2 pi radians).
One can therefore use an unsigned 8-bit variable and simply
add or subtract, allowing it to overflow/underflow and it
still does the expected contiguous thing.
@return Sine result, 0 to 255, or -128 to +127 if type-converted to
a signed int8_t, but you'll most likely want unsigned as this
output is often used for pixel brightness in animation effects.
*/
static uint8_t sine8(uint8_t x) {
return pgm_read_byte(&_NeoPixelSineTable[x]); // 0-255 in, 0-255 out
}
/*!
@brief An 8-bit gamma-correction function for basic pixel brightness
adjustment. Makes color transitions appear more perceptially
correct.
@param x Input brightness, 0 (minimum or off/black) to 255 (maximum).
@return Gamma-adjusted brightness, can then be passed to one of the
setPixelColor() functions. This uses a fixed gamma correction
exponent of 2.6, which seems reasonably okay for average
NeoPixels in average tasks. If you need finer control you'll
need to provide your own gamma-correction function instead.
*/
static uint8_t gamma8(uint8_t x) {
return pgm_read_byte(&_NeoPixelGammaTable[x]); // 0-255 in, 0-255 out
}
/*!
@brief Convert separate red, green and blue values into a single
"packed" 32-bit RGB color.
@param r Red brightness, 0 to 255.
@param g Green brightness, 0 to 255.
@param b Blue brightness, 0 to 255.
@return 32-bit packed RGB value, which can then be assigned to a
variable for later use or passed to the setPixelColor()
function. Packed RGB format is predictable, regardless of
LED strand color order.
*/
static uint32_t Color(uint8_t r, uint8_t g, uint8_t b) {
return ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
}
/*!
@brief Convert separate red, green, blue and white values into a
single "packed" 32-bit WRGB color.
@param r Red brightness, 0 to 255.
@param g Green brightness, 0 to 255.
@param b Blue brightness, 0 to 255.
@param w White brightness, 0 to 255.
@return 32-bit packed WRGB value, which can then be assigned to a
variable for later use or passed to the setPixelColor()
function. Packed WRGB format is predictable, regardless of
LED strand color order.
*/
static uint32_t Color(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
return ((uint32_t)w << 24) | ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
}
static uint32_t ColorHSV(uint16_t hue, uint8_t sat = 255, uint8_t val = 255);
/*!
@brief A gamma-correction function for 32-bit packed RGB or WRGB
colors. Makes color transitions appear more perceptially
correct.
@param x 32-bit packed RGB or WRGB color.
@return Gamma-adjusted packed color, can then be passed in one of the
setPixelColor() functions. Like gamma8(), this uses a fixed
gamma correction exponent of 2.6, which seems reasonably okay
for average NeoPixels in average tasks. If you need finer
control you'll need to provide your own gamma-correction
function instead.
*/
static uint32_t gamma32(uint32_t x);
void begin(void); void rainbow(uint16_t first_hue = 0, int8_t reps = 1,
void show(void); uint8_t saturation = 255, uint8_t brightness = 255,
void setPin(int16_t p); bool gammify = true);
void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b, uint8_t w);
void setPixelColor(uint16_t n, uint32_t c);
void fill(uint32_t c = 0, uint16_t first = 0, uint16_t count = 0);
void setBrightness(uint8_t);
void clear(void);
void updateLength(uint16_t n);
void updateType(neoPixelType t);
/*!
@brief Check whether a call to show() will start sending data
immediately or will 'block' for a required interval. NeoPixels
require a short quiet time (about 300 microseconds) after the
last bit is received before the data 'latches' and new data can
start being received. Usually one's sketch is implicitly using
this time to generate a new frame of animation...but if it
finishes very quickly, this function could be used to see if
there's some idle time available for some low-priority
concurrent task.
@return 1 or true if show() will start sending immediately, 0 or false
if show() would block (meaning some idle time is available).
*/
bool canShow(void) {
// It's normal and possible for endTime to exceed micros() if the
// 32-bit clock counter has rolled over (about every 70 minutes).
// Since both are uint32_t, a negative delta correctly maps back to
// positive space, and it would seem like the subtraction below would
// suffice. But a problem arises if code invokes show() very
// infrequently...the micros() counter may roll over MULTIPLE times in
// that interval, the delta calculation is no longer correct and the
// next update may stall for a very long time. The check below resets
// the latch counter if a rollover has occurred. This can cause an
// extra delay of up to 300 microseconds in the rare case where a
// show() call happens precisely around the rollover, but that's
// neither likely nor especially harmful, vs. other code that might
// stall for 30+ minutes, or having to document and frequently remind
// and/or provide tech support explaining an unintuitive need for
// show() calls at least once an hour.
uint32_t now = micros();
if (endTime > now) {
endTime = now;
}
return (now - endTime) >= 300L;
}
/*!
@brief Get a pointer directly to the NeoPixel data buffer in RAM.
Pixel data is stored in a device-native format (a la the NEO_*
constants) and is not translated here. Applications that access
this buffer will need to be aware of the specific data format
and handle colors appropriately.
@return Pointer to NeoPixel buffer (uint8_t* array).
@note This is for high-performance applications where calling
setPixelColor() on every single pixel would be too slow (e.g.
POV or light-painting projects). There is no bounds checking
on the array, creating tremendous potential for mayhem if one
writes past the ends of the buffer. Great power, great
responsibility and all that.
*/
uint8_t *getPixels(void) const { return pixels; };
uint8_t getBrightness(void) const;
/*!
@brief Retrieve the pin number used for NeoPixel data output.
@return Arduino pin number (-1 if not set).
*/
int16_t getPin(void) const { return pin; };
/*!
@brief Return the number of pixels in an Adafruit_NeoPixel strip object.
@return Pixel count (0 if not set).
*/
uint16_t numPixels(void) const { return numLEDs; }
uint32_t getPixelColor(uint16_t n) const;
/*!
@brief An 8-bit integer sine wave function, not directly compatible
with standard trigonometric units like radians or degrees.
@param x Input angle, 0-255; 256 would loop back to zero, completing
the circle (equivalent to 360 degrees or 2 pi radians).
One can therefore use an unsigned 8-bit variable and simply
add or subtract, allowing it to overflow/underflow and it
still does the expected contiguous thing.
@return Sine result, 0 to 255, or -128 to +127 if type-converted to
a signed int8_t, but you'll most likely want unsigned as this
output is often used for pixel brightness in animation effects.
*/
static uint8_t sine8(uint8_t x) {
return pgm_read_byte(&_NeoPixelSineTable[x]); // 0-255 in, 0-255 out
}
/*!
@brief An 8-bit gamma-correction function for basic pixel brightness
adjustment. Makes color transitions appear more perceptially
correct.
@param x Input brightness, 0 (minimum or off/black) to 255 (maximum).
@return Gamma-adjusted brightness, can then be passed to one of the
setPixelColor() functions. This uses a fixed gamma correction
exponent of 2.6, which seems reasonably okay for average
NeoPixels in average tasks. If you need finer control you'll
need to provide your own gamma-correction function instead.
*/
static uint8_t gamma8(uint8_t x) {
return pgm_read_byte(&_NeoPixelGammaTable[x]); // 0-255 in, 0-255 out
}
/*!
@brief Convert separate red, green and blue values into a single
"packed" 32-bit RGB color.
@param r Red brightness, 0 to 255.
@param g Green brightness, 0 to 255.
@param b Blue brightness, 0 to 255.
@return 32-bit packed RGB value, which can then be assigned to a
variable for later use or passed to the setPixelColor()
function. Packed RGB format is predictable, regardless of
LED strand color order.
*/
static uint32_t Color(uint8_t r, uint8_t g, uint8_t b) {
return ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
}
/*!
@brief Convert separate red, green, blue and white values into a
single "packed" 32-bit WRGB color.
@param r Red brightness, 0 to 255.
@param g Green brightness, 0 to 255.
@param b Blue brightness, 0 to 255.
@param w White brightness, 0 to 255.
@return 32-bit packed WRGB value, which can then be assigned to a
variable for later use or passed to the setPixelColor()
function. Packed WRGB format is predictable, regardless of
LED strand color order.
*/
static uint32_t Color(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
return ((uint32_t)w << 24) | ((uint32_t)r << 16) | ((uint32_t)g << 8) | b;
}
static uint32_t ColorHSV(uint16_t hue, uint8_t sat = 255, uint8_t val = 255);
/*!
@brief A gamma-correction function for 32-bit packed RGB or WRGB
colors. Makes color transitions appear more perceptially
correct.
@param x 32-bit packed RGB or WRGB color.
@return Gamma-adjusted packed color, can then be passed in one of the
setPixelColor() functions. Like gamma8(), this uses a fixed
gamma correction exponent of 2.6, which seems reasonably okay
for average NeoPixels in average tasks. If you need finer
control you'll need to provide your own gamma-correction
function instead.
*/
static uint32_t gamma32(uint32_t x);
void rainbow(uint16_t first_hue = 0, int8_t reps = 1, static neoPixelType str2order(const char *v);
uint8_t saturation = 255, uint8_t brightness = 255,
bool gammify = true);
static neoPixelType str2order(const char *v); private:
#if defined(ARDUINO_ARCH_RP2040)
void rp2040Init(uint8_t pin, bool is800KHz);
void rp2040Show(uint8_t pin, uint8_t *pixels, uint32_t numBytes, bool is800KHz);
#endif
private: protected:
#if defined(ARDUINO_ARCH_RP2040) #ifdef NEO_KHZ400 // If 400 KHz NeoPixel support enabled...
void rp2040Init(uint8_t pin, bool is800KHz); bool is800KHz; ///< true if 800 KHz pixels
void rp2040Show(uint8_t pin, uint8_t *pixels, uint32_t numBytes, bool is800KHz); #endif
#endif bool begun; ///< true if begin() previously called
uint16_t numLEDs; ///< Number of RGB LEDs in strip
protected: uint16_t numBytes; ///< Size of 'pixels' buffer below
#ifdef NEO_KHZ400 // If 400 KHz NeoPixel support enabled... int16_t pin; ///< Output pin number (-1 if not yet set)
bool is800KHz; ///< true if 800 KHz pixels uint8_t brightness; ///< Strip brightness 0-255 (stored as +1)
#endif uint8_t *pixels; ///< Holds LED color values (3 or 4 bytes each)
bool begun; ///< true if begin() previously called uint8_t rOffset; ///< Red index within each 3- or 4-byte pixel
uint16_t numLEDs; ///< Number of RGB LEDs in strip uint8_t gOffset; ///< Index of green byte
uint16_t numBytes; ///< Size of 'pixels' buffer below uint8_t bOffset; ///< Index of blue byte
int16_t pin; ///< Output pin number (-1 if not yet set) uint8_t wOffset; ///< Index of white (==rOffset if no white)
uint8_t brightness; ///< Strip brightness 0-255 (stored as +1) uint32_t endTime; ///< Latch timing reference
uint8_t *pixels; ///< Holds LED color values (3 or 4 bytes each) #ifdef __AVR__
uint8_t rOffset; ///< Red index within each 3- or 4-byte pixel volatile uint8_t *port; ///< Output PORT register
uint8_t gOffset; ///< Index of green byte uint8_t pinMask; ///< Output PORT bitmask
uint8_t bOffset; ///< Index of blue byte #endif
uint8_t wOffset; ///< Index of white (==rOffset if no white) #if defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32)
uint32_t endTime; ///< Latch timing reference GPIO_TypeDef *gpioPort; ///< Output GPIO PORT
#ifdef __AVR__ uint32_t gpioPin; ///< Output GPIO PIN
volatile uint8_t *port; ///< Output PORT register #endif
uint8_t pinMask; ///< Output PORT bitmask #if defined(ARDUINO_ARCH_RP2040)
#endif PIO pio = pio0;
#if defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_ARDUINO_CORE_STM32) || defined(ARDUINO_ARCH_CH32) int sm = 0;
GPIO_TypeDef *gpioPort; ///< Output GPIO PORT bool init = true;
uint32_t gpioPin; ///< Output GPIO PIN #endif
#endif };
#if defined(ARDUINO_ARCH_RP2040)
PIO pio = pio0;
int sm = 0;
bool init = true;
#endif
};
#endif // ADAFRUIT_NEOPIXEL_H
#endif // ADAFRUIT_NEOPIXEL_H

357
Software/src/lib/adafruit-Adafruit_NeoPixel/esp.c
View file

@ -17,256 +17,147 @@
* limitations under the License. * limitations under the License.
*/ */
#if defined(ESP32) #if defined(ESP32)
#include <Arduino.h> #include <Arduino.h>
#include "driver/rmt.h"
#if defined(ESP_IDF_VERSION) #if defined(ESP_IDF_VERSION)
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 0, 0) #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 0, 0)
#define HAS_ESP_IDF_4 #define HAS_ESP_IDF_4
#endif #endif
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0) #endif
#define HAS_ESP_IDF_5
#endif
#endif
// This code is adapted from the ESP-IDF v3.4 RMT "led_strip" example, altered
// to work with the Arduino version of the ESP-IDF (3.2)
#ifdef HAS_ESP_IDF_5 #define WS2812_T0H_NS (400)
#define WS2812_T0L_NS (850)
#define WS2812_T1H_NS (800)
#define WS2812_T1L_NS (450)
static SemaphoreHandle_t show_mutex = NULL; #define WS2811_T0H_NS (500)
#define WS2811_T0L_NS (2000)
#define WS2811_T1H_NS (1200)
#define WS2811_T1L_NS (1300)
void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz) { static uint32_t t0h_ticks = 0;
// Note: Because rmtPin is shared between all instances, we will static uint32_t t1h_ticks = 0;
// end up releasing/initializing the RMT channels each time we static uint32_t t0l_ticks = 0;
// invoke on different pins. This is probably ok, just not static uint32_t t1l_ticks = 0;
// efficient. led_data is shared between all instances but will
// be allocated with enough space for the largest instance; data
// is not used beyond the mutex lock so this should be fine.
#define SEMAPHORE_TIMEOUT_MS 50 // Limit the number of RMT channels available for the Neopixels. Defaults to all
// channels (8 on ESP32, 4 on ESP32-S2 and S3). Redefining this value will free
// any channels with a higher number for other uses, such as IR send-and-recieve
// libraries. Redefine as 1 to restrict Neopixels to only a single channel.
#define ADAFRUIT_RMT_CHANNEL_MAX RMT_CHANNEL_MAX
static rmt_data_t *led_data = NULL; #define RMT_LL_HW_BASE (&RMT)
static uint32_t led_data_size = 0;
static int rmtPin = -1;
if (show_mutex && xSemaphoreTake(show_mutex, SEMAPHORE_TIMEOUT_MS / portTICK_PERIOD_MS) == pdTRUE) { bool rmt_reserved_channels[ADAFRUIT_RMT_CHANNEL_MAX];
uint32_t requiredSize = numBytes * 8;
if (requiredSize > led_data_size) {
free(led_data);
if (led_data = (rmt_data_t *)malloc(requiredSize * sizeof(rmt_data_t))) {
led_data_size = requiredSize;
} else {
led_data_size = 0;
}
} else if (requiredSize == 0) {
// To release RMT resources (RMT channels and led_data), call
// .updateLength(0) to set number of pixels/bytes to zero,
// then call .show() to invoke this code and free resources.
free(led_data);
led_data = NULL;
if (rmtPin >= 0) {
rmtDeinit(rmtPin);
rmtPin = -1;
}
led_data_size = 0;
}
if (led_data_size > 0 && requiredSize <= led_data_size) { static void IRAM_ATTR ws2812_rmt_adapter(const void* src, rmt_item32_t* dest, size_t src_size, size_t wanted_num,
if (pin != rmtPin) { size_t* translated_size, size_t* item_num) {
if (rmtPin >= 0) { if (src == NULL || dest == NULL) {
rmtDeinit(rmtPin); *translated_size = 0;
rmtPin = -1; *item_num = 0;
} return;
if (!rmtInit(pin, RMT_TX_MODE, RMT_MEM_NUM_BLOCKS_1, 10000000)) { }
log_e("Failed to init RMT TX mode on pin %d", pin); const rmt_item32_t bit0 = {{{t0h_ticks, 1, t0l_ticks, 0}}}; //Logical 0
return; const rmt_item32_t bit1 = {{{t1h_ticks, 1, t1l_ticks, 0}}}; //Logical 1
} size_t size = 0;
rmtPin = pin; size_t num = 0;
} uint8_t* psrc = (uint8_t*)src;
rmt_item32_t* pdest = dest;
while (size < src_size && num < wanted_num) {
for (int i = 0; i < 8; i++) {
// MSB first
if (*psrc & (1 << (7 - i))) {
pdest->val = bit1.val;
} else {
pdest->val = bit0.val;
}
num++;
pdest++;
}
size++;
psrc++;
}
*translated_size = size;
*item_num = num;
}
if (rmtPin >= 0) { static bool rmt_initialized = false;
int i=0; static bool rmt_adapter_initialized = false;
for (int b=0; b < numBytes; b++) {
for (int bit=0; bit<8; bit++){
if ( pixels[b] & (1<<(7-bit)) ) {
led_data[i].level0 = 1;
led_data[i].duration0 = 8;
led_data[i].level1 = 0;
led_data[i].duration1 = 4;
} else {
led_data[i].level0 = 1;
led_data[i].duration0 = 4;
led_data[i].level1 = 0;
led_data[i].duration1 = 8;
}
i++;
}
}
rmtWrite(pin, led_data, numBytes * 8, RMT_WAIT_FOR_EVER); void espShow(uint8_t pin, uint8_t* pixels, uint32_t numBytes, boolean is800KHz) {
} if (rmt_initialized == false) {
} // Reserve channel
rmt_channel_t channel = 0;
xSemaphoreGive(show_mutex); #if defined(HAS_ESP_IDF_4)
} rmt_config_t config = RMT_DEFAULT_CONFIG_TX(pin, channel);
} config.clk_div = 2;
#else
// Match default TX config from ESP-IDF version 3.4
rmt_config_t config = {.rmt_mode = RMT_MODE_TX,
.channel = channel,
.gpio_num = pin,
.clk_div = 2,
.mem_block_num = 1,
.tx_config = {
.carrier_freq_hz = 38000,
.carrier_level = RMT_CARRIER_LEVEL_HIGH,
.idle_level = RMT_IDLE_LEVEL_LOW,
.carrier_duty_percent = 33,
.carrier_en = false,
.loop_en = false,
.idle_output_en = true,
}};
#endif
rmt_config(&config);
rmt_driver_install(config.channel, 0, 0);
// To avoid race condition initializing the mutex, all instances of // Convert NS timings to ticks
// Adafruit_NeoPixel must be constructed before launching and child threads uint32_t counter_clk_hz = 0;
void espInit() {
if (!show_mutex) {
show_mutex = xSemaphoreCreateMutex();
}
}
#else #if defined(HAS_ESP_IDF_4)
rmt_get_counter_clock(channel, &counter_clk_hz);
#else
// this emulates the rmt_get_counter_clock() function from ESP-IDF 3.4
if (RMT_LL_HW_BASE->conf_ch[config.channel].conf1.ref_always_on == RMT_BASECLK_REF) {
uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
uint32_t div = div_cnt == 0 ? 256 : div_cnt;
counter_clk_hz = REF_CLK_FREQ / (div);
} else {
uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
uint32_t div = div_cnt == 0 ? 256 : div_cnt;
counter_clk_hz = APB_CLK_FREQ / (div);
}
#endif
#include "driver/rmt.h" // NS to tick converter
float ratio = (float)counter_clk_hz / 1e9;
if (is800KHz) {
t0h_ticks = (uint32_t)(ratio * WS2812_T0H_NS);
t0l_ticks = (uint32_t)(ratio * WS2812_T0L_NS);
t1h_ticks = (uint32_t)(ratio * WS2812_T1H_NS);
t1l_ticks = (uint32_t)(ratio * WS2812_T1L_NS);
} else {
t0h_ticks = (uint32_t)(ratio * WS2811_T0H_NS);
t0l_ticks = (uint32_t)(ratio * WS2811_T0L_NS);
t1h_ticks = (uint32_t)(ratio * WS2811_T1H_NS);
t1l_ticks = (uint32_t)(ratio * WS2811_T1L_NS);
}
// This code is adapted from the ESP-IDF v3.4 RMT "led_strip" example, altered // Initialize automatic timing translator
// to work with the Arduino version of the ESP-IDF (3.2) rmt_translator_init(0, ws2812_rmt_adapter);
rmt_initialized = true;
}
#define WS2812_T0H_NS (400) // Write and wait to finish
#define WS2812_T0L_NS (850) rmt_write_sample(0, pixels, (size_t)numBytes, false);
#define WS2812_T1H_NS (800) }
#define WS2812_T1L_NS (450)
#define WS2811_T0H_NS (500)
#define WS2811_T0L_NS (2000)
#define WS2811_T1H_NS (1200)
#define WS2811_T1L_NS (1300)
static uint32_t t0h_ticks = 0;
static uint32_t t1h_ticks = 0;
static uint32_t t0l_ticks = 0;
static uint32_t t1l_ticks = 0;
// Limit the number of RMT channels available for the Neopixels. Defaults to all
// channels (8 on ESP32, 4 on ESP32-S2 and S3). Redefining this value will free
// any channels with a higher number for other uses, such as IR send-and-recieve
// libraries. Redefine as 1 to restrict Neopixels to only a single channel.
#define ADAFRUIT_RMT_CHANNEL_MAX RMT_CHANNEL_MAX
#define RMT_LL_HW_BASE (&RMT)
bool rmt_reserved_channels[ADAFRUIT_RMT_CHANNEL_MAX];
static void IRAM_ATTR ws2812_rmt_adapter(const void *src, rmt_item32_t *dest, size_t src_size,
size_t wanted_num, size_t *translated_size, size_t *item_num)
{
if (src == NULL || dest == NULL) {
*translated_size = 0;
*item_num = 0;
return;
}
const rmt_item32_t bit0 = {{{ t0h_ticks, 1, t0l_ticks, 0 }}}; //Logical 0
const rmt_item32_t bit1 = {{{ t1h_ticks, 1, t1l_ticks, 0 }}}; //Logical 1
size_t size = 0;
size_t num = 0;
uint8_t *psrc = (uint8_t *)src;
rmt_item32_t *pdest = dest;
while (size < src_size && num < wanted_num) {
for (int i = 0; i < 8; i++) {
// MSB first
if (*psrc & (1 << (7 - i))) {
pdest->val = bit1.val;
} else {
pdest->val = bit0.val;
}
num++;
pdest++;
}
size++;
psrc++;
}
*translated_size = size;
*item_num = num;
}
static bool rmt_initialized = false;
static bool rmt_adapter_initialized = false;
void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes, boolean is800KHz) {
if (rmt_initialized == false) {
// Reserve channel
rmt_channel_t channel = 0;
#if defined(HAS_ESP_IDF_4)
rmt_config_t config = RMT_DEFAULT_CONFIG_TX(pin, channel);
config.clk_div = 2;
#else
// Match default TX config from ESP-IDF version 3.4
rmt_config_t config = {
.rmt_mode = RMT_MODE_TX,
.channel = channel,
.gpio_num = pin,
.clk_div = 2,
.mem_block_num = 1,
.tx_config = {
.carrier_freq_hz = 38000,
.carrier_level = RMT_CARRIER_LEVEL_HIGH,
.idle_level = RMT_IDLE_LEVEL_LOW,
.carrier_duty_percent = 33,
.carrier_en = false,
.loop_en = false,
.idle_output_en = true,
}
};
#endif
rmt_config(&config);
rmt_driver_install(config.channel, 0, 0);
// Convert NS timings to ticks
uint32_t counter_clk_hz = 0;
#if defined(HAS_ESP_IDF_4)
rmt_get_counter_clock(channel, &counter_clk_hz);
#else
// this emulates the rmt_get_counter_clock() function from ESP-IDF 3.4
if (RMT_LL_HW_BASE->conf_ch[config.channel].conf1.ref_always_on == RMT_BASECLK_REF) {
uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
uint32_t div = div_cnt == 0 ? 256 : div_cnt;
counter_clk_hz = REF_CLK_FREQ / (div);
} else {
uint32_t div_cnt = RMT_LL_HW_BASE->conf_ch[config.channel].conf0.div_cnt;
uint32_t div = div_cnt == 0 ? 256 : div_cnt;
counter_clk_hz = APB_CLK_FREQ / (div);
}
#endif
// NS to tick converter
float ratio = (float)counter_clk_hz / 1e9;
if (is800KHz) {
t0h_ticks = (uint32_t)(ratio * WS2812_T0H_NS);
t0l_ticks = (uint32_t)(ratio * WS2812_T0L_NS);
t1h_ticks = (uint32_t)(ratio * WS2812_T1H_NS);
t1l_ticks = (uint32_t)(ratio * WS2812_T1L_NS);
} else {
t0h_ticks = (uint32_t)(ratio * WS2811_T0H_NS);
t0l_ticks = (uint32_t)(ratio * WS2811_T0L_NS);
t1h_ticks = (uint32_t)(ratio * WS2811_T1H_NS);
t1l_ticks = (uint32_t)(ratio * WS2811_T1L_NS);
}
// Initialize automatic timing translator
rmt_translator_init(0, ws2812_rmt_adapter);
rmt_initialized = true;
}
// Write and wait to finish
rmt_write_sample(0, pixels, (size_t)numBytes, false);
//rmt_wait_tx_done(config.channel, pdMS_TO_TICKS(100));
// Free channel again
//rmt_driver_uninstall(config.channel);
//rmt_reserved_channels[channel] = false;
//gpio_set_direction(pin, GPIO_MODE_OUTPUT);
}
#endif // ifndef IDF5
#endif // ifdef(ESP32)
#endif