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Lab_interaccio/2018/Llac_mod_Miguel/NeoPixel.cpp

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2025-02-25 21:29:42 +01:00
#include "NeoPixel.h"
// Constructor when length, pin and type are known at compile-time:
Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n, uint8_t p, neoPixelType t) :
begun(false), brightness(0), pixels(NULL), endTime(0)
{
updateType(t);
updateLength(n);
setPin(p);
}
Adafruit_NeoPixel::Adafruit_NeoPixel(uint16_t n1, uint16_t n2, uint8_t p1, uint8_t p2, neoPixelType t) :
begun(false), brightness(0), pixels(NULL), endTime(0)
{
updateType(t);
updateLength(n1+n2);
setPin(p1, p2);
}
// via Michael Vogt/neophob: empty constructor is used when strand length
// isn't known at compile-time; situations where program config might be
// read from internal flash memory or an SD card, or arrive via serial
// command. If using this constructor, MUST follow up with updateType(),
// updateLength(), etc. to establish the strand type, length and pin number!
Adafruit_NeoPixel::Adafruit_NeoPixel() :
#ifdef NEO_KHZ400
is800KHz(true),
#endif
begun(false), numLEDs(0), numBytes(0), pin(-1), brightness(0), pixels(NULL),
rOffset(1), gOffset(0), bOffset(2), wOffset(1), endTime(0)
{
}
Adafruit_NeoPixel::~Adafruit_NeoPixel() {
if(pixels) free(pixels);
if(pin >= 0) pinMode(pin, INPUT);
}
void Adafruit_NeoPixel::begin(void) {
if(pin >= 0) {
pinMode(pin, OUTPUT);
digitalWrite(pin, LOW);
}
begun = true;
}
void Adafruit_NeoPixel::updateLength(uint16_t n) {
if(pixels) free(pixels); // Free existing data (if any)
// Allocate new data -- note: ALL PIXELS ARE CLEARED
numBytes = n * ((wOffset == rOffset) ? 3 : 4);
if((pixels = (uint8_t *)malloc(numBytes))) {
memset(pixels, 0, numBytes);
numLEDs = n;
} else {
numLEDs = numBytes = 0;
}
}
void Adafruit_NeoPixel::updateType(neoPixelType t) {
boolean oldThreeBytesPerPixel = (wOffset == rOffset); // false if RGBW
wOffset = (t >> 6) & 0b11; // See notes in header file
rOffset = (t >> 4) & 0b11; // regarding R/G/B/W offsets
gOffset = (t >> 2) & 0b11;
bOffset = t & 0b11;
#ifdef NEO_KHZ400
is800KHz = (t < 256); // 400 KHz flag is 1<<8
#endif
// If bytes-per-pixel has changed (and pixel data was previously
// allocated), re-allocate to new size. Will clear any data.
if(pixels) {
boolean newThreeBytesPerPixel = (wOffset == rOffset);
if(newThreeBytesPerPixel != oldThreeBytesPerPixel) updateLength(numLEDs);
}
}
void Adafruit_NeoPixel::show(void) {
if(!pixels) return;
// Data latch = 300+ 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 multiple
// 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.
// NRF52 may use PWM + DMA (if available), may not need to disable interrupt
#ifndef NRF52
noInterrupts(); // Need 100% focus on instruction timing
#endif
#if defined(__arm__)
#if defined (__SAMD21E17A__) || defined(__SAMD21G18A__) || defined(__SAMD21E18A__) || defined(__SAMD21J18A__) // Arduino Zero, Gemma/Trinket M0, SODAQ Autonomo and others
// Tried this with a timer/counter, couldn't quite get adequate
// resolution. So yay, you get a load of goofball NOPs...
uint8_t *ptr, *end, p, bitMask, portNum;
uint32_t pinMask;
portNum = g_APinDescription[pin].ulPort;
pinMask = 1ul << g_APinDescription[pin].ulPin;
ptr = pixels;
end = ptr + numBytes;
p = *ptr++;
bitMask = 0x80;
volatile uint32_t *set = &(PORT->Group[portNum].OUTSET.reg),
*clr = &(PORT->Group[portNum].OUTCLR.reg);
#ifdef NEO_KHZ400 // 800 KHz check needed only if 400 KHz support enabled
if(is800KHz) {
#endif
for(;;) {
*set = pinMask;
asm("nop; nop; nop; nop; nop; nop; nop; nop;");
if(p & bitMask) {
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop;");
*clr = pinMask;
} else {
*clr = pinMask;
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop;");
}
if(bitMask >>= 1) {
asm("nop; nop; nop; nop; nop; nop; nop; nop; nop;");
} else {
if(ptr >= end) break;
p = *ptr++;
bitMask = 0x80;
}
}
#ifdef NEO_KHZ400
} else { // 400 KHz bitstream
for(;;) {
*set = pinMask;
asm("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");
if(p & bitMask) {
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop;");
*clr = pinMask;
} else {
*clr = pinMask;
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop;");
}
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; nop; nop; nop; nop;");
if(bitMask >>= 1) {
asm("nop; nop; nop; nop; nop; nop; nop;");
} else {
if(ptr >= end) break;
p = *ptr++;
bitMask = 0x80;
}
}
}
#endif
#endif
// END ARM ----------------------------------------------------------------
#else
#error Architecture not supported
#endif
// END ARCHITECTURE SELECT ------------------------------------------------
#ifndef NRF52
interrupts();
#endif
endTime = micros(); // Save EOD time for latch on next call
}
void Adafruit_NeoPixel::show_strips(void) {
if(!pixels) return;
// Data latch = 300+ 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 multiple
// 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.
// NRF52 may use PWM + DMA (if available), may not need to disable interrupt
#ifndef NRF52
noInterrupts(); // Need 100% focus on instruction timing
#endif
#if defined(__arm__)
#if defined (__SAMD21E17A__) || defined(__SAMD21G18A__) || defined(__SAMD21E18A__) || defined(__SAMD21J18A__) // Arduino Zero, Gemma/Trinket M0, SODAQ Autonomo and others
// Tried this with a timer/counter, couldn't quite get adequate
// resolution. So yay, you get a load of goofball NOPs...
uint8_t temp_pin[3] = {8, 4, 3};
uint8_t *ptr1, *ptr2, *end, p1, p2, bitMask, portNum[3], val1, val2;
uint32_t pinMask[3];
for(int i=0; i<2; i++)
{
portNum[i] = g_APinDescription[temp_pin[i]].ulPort;
pinMask[i] = 1ul << g_APinDescription[temp_pin[i]].ulPin;
}
ptr1 = pixels;
ptr2 = pixels;
end = ptr1 + numBytes/2;
p1 = *ptr1++;
p2 = *ptr2++;
bitMask = 0x80;
uint32_t *set0 = (uint32_t*)(&(PORT->Group[portNum[0]].OUTSET.reg)),
*clr0 = (uint32_t*)(&(PORT->Group[portNum[0]].OUTCLR.reg)),
*set1 = (uint32_t*)(&(PORT->Group[portNum[1]].OUTSET.reg)),
*clr1 = (uint32_t*)(&(PORT->Group[portNum[1]].OUTCLR.reg));
// #ifdef NEO_KHZ400 // 800 KHz check needed only if 400 KHz support enabled
// if(is800KHz) {
// #endif
if (p1 & bitMask) val1=1;
else val1=0;
if (p2 & bitMask) val2=1;
else val2=0;
for(;;) {
// Serial.print(p1);
// Serial.print(" ");
// Serial.println(p2);
*set0 = pinMask[0];
*set1 = pinMask[1];
if((val1)&&(val2))
{
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
"nop; nop; nop; nop; ");
*clr0 = pinMask[0];
//asm("nop;");
*clr1 = pinMask[1];
}
else if((!val1)&&(!val2))
{
*clr0 = pinMask[0];
//asm("nop;");
*clr1 = pinMask[1];
asm("nop; nop; nop; nop; nop; nop; nop; nop;"
);
}
// else if((p1 & bitMask)&&(!(p2 & bitMask)))
// {
// asm("nop; nop; nop; nop; nop; nop; nop;"
// );
// *clr0 = pinMask[0];
// asm("nop;");
// *clr1 = pinMask[1];
// }
// else if((!(p1 & bitMask))&&((p2 & bitMask)))
// {
// *clr0 = pinMask[0];
// asm("nop;");
// *clr1 = pinMask[1];
// asm("nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop;");
// }
if(bitMask >>= 1) {
//asm("nop; nop;");
} else {
if(ptr1 >= end) break;
p1 = *ptr1++;
//p2 = p1;
p2 = *ptr2++;
bitMask = 0x80;
}
if (p1 & bitMask) val1=1;
else val1=0;
if (p2 & bitMask) val2=1;
else val2=0;
}
// #ifdef NEO_KHZ400
// } else { // 400 KHz bitstream
// for(;;) {
// *set0 = pinMask[0];
//// *set1 = pinMask[1];
//// *set2 = pinMask[2];
// asm("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");
// if(p & bitMask) {
// asm("nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop;");
// *clr0 = pinMask[0];
//// *clr1 = pinMask[1];
//// *clr2 = pinMask[2];
// } else {
// *clr0 = pinMask[0];
//// *clr1 = pinMask[1];
//// *clr2 = pinMask[2];
// asm("nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop;");
// }
// asm("nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;"
// "nop; nop; nop; nop; nop; nop; nop; nop;");
// if(bitMask >>= 1) {
// asm("nop; nop; nop; nop; nop; nop; nop;");
// } else {
// if(ptr >= end) break;
// p = *ptr++;
// bitMask = 0x80;
// }
// }
// }
// #endif
#endif
// END ARM ----------------------------------------------------------------
#else
#error Architecture not supported
#endif
// END ARCHITECTURE SELECT ------------------------------------------------
#ifndef NRF52
interrupts();
#endif
endTime = micros(); // Save EOD time for latch on next call
}
// Set the output pin number
void Adafruit_NeoPixel::setPin(uint8_t p) {
if(begun && (pin >= 0)) pinMode(pin, INPUT);
pin = p;
if(begun) {
pinMode(p, OUTPUT);
digitalWrite(p, LOW);
}
}
// Set the output pin number
void Adafruit_NeoPixel::setPin(uint8_t p1, uint8_t p2) {
pin_strip[0] = p1;
pin_strip[1] = p2;
if(begun) {
pinMode(p1, OUTPUT);
pinMode(p2, OUTPUT);
digitalWrite(p1, LOW);
digitalWrite(p2, LOW);
}
}
// 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;
if(wOffset == rOffset) { // Is an RGB-type strip
p = &pixels[n * 3]; // 3 bytes per pixel
} else { // Is a WRGB-type strip
p = &pixels[n * 4]; // 4 bytes per pixel
p[wOffset] = 0; // But only R,G,B passed -- set W to 0
}
p[rOffset] = r; // R,G,B always stored
p[gOffset] = g;
p[bOffset] = b;
}
}
void Adafruit_NeoPixel::setPixelColor(
uint16_t n, uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
if(n < numLEDs) {
if(brightness) { // See notes in setBrightness()
r = (r * brightness) >> 8;
g = (g * brightness) >> 8;
b = (b * brightness) >> 8;
w = (w * brightness) >> 8;
}
uint8_t *p;
if(wOffset == rOffset) { // Is an RGB-type strip
p = &pixels[n * 3]; // 3 bytes per pixel (ignore W)
} else { // Is a WRGB-type strip
p = &pixels[n * 4]; // 4 bytes per pixel
p[wOffset] = w; // Store W
}
p[rOffset] = r; // Store R,G,B
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 *p,
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;
}
if(wOffset == rOffset) {
p = &pixels[n * 3];
} else {
p = &pixels[n * 4];
uint8_t w = (uint8_t)(c >> 24);
p[wOffset] = brightness ? ((w * brightness) >> 8) : w;
}
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;
}
// Convert separate R,G,B,W into packed 32-bit WRGB color.
// Packed format is always WRGB, regardless of LED strand color order.
uint32_t Adafruit_NeoPixel::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;
}
// Query color from previously-set pixel (returns packed 32-bit RGB value)
uint32_t Adafruit_NeoPixel::getPixelColor(uint16_t n) const {
if(n >= numLEDs) return 0; // Out of bounds, return no color.
uint8_t *p;
if(wOffset == rOffset) { // Is RGB-type device
p = &pixels[n * 3];
if(brightness) {
// Stored color was decimated by setBrightness(). Returned value
// attempts to scale back to an approximation of the original 24-bit
// value used when setting the pixel color, but there will always be
// some error -- those bits are simply gone. Issue is most
// pronounced at low brightness levels.
return (((uint32_t)(p[rOffset] << 8) / brightness) << 16) |
(((uint32_t)(p[gOffset] << 8) / brightness) << 8) |
( (uint32_t)(p[bOffset] << 8) / brightness );
} else {
// No brightness adjustment has been made -- return 'raw' color
return ((uint32_t)p[rOffset] << 16) |
((uint32_t)p[gOffset] << 8) |
(uint32_t)p[bOffset];
}
} else { // Is RGBW-type device
p = &pixels[n * 4];
if(brightness) { // Return scaled color
return (((uint32_t)(p[wOffset] << 8) / brightness) << 24) |
(((uint32_t)(p[rOffset] << 8) / brightness) << 16) |
(((uint32_t)(p[gOffset] << 8) / brightness) << 8) |
( (uint32_t)(p[bOffset] << 8) / brightness );
} else { // Return raw color
return ((uint32_t)p[wOffset] << 24) |
((uint32_t)p[rOffset] << 16) |
((uint32_t)p[gOffset] << 8) |
(uint32_t)p[bOffset];
}
}
}
// Returns pointer to pixels[] array. Pixel data is stored in device-
// native format and is not translated here. Application will need to be
// aware of specific pixel data format 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);
}
/* A PROGMEM (flash mem) table containing 8-bit unsigned sine wave (0-255).
Copy & paste this snippet into a Python REPL to regenerate:
import math
for x in range(256):
print("{:3},".format(int((math.sin(x/128.0*math.pi)+1.0)*127.5+0.5))),
if x&15 == 15: print
*/
static const uint8_t PROGMEM _sineTable[256] = {
128,131,134,137,140,143,146,149,152,155,158,162,165,167,170,173,
176,179,182,185,188,190,193,196,198,201,203,206,208,211,213,215,
218,220,222,224,226,228,230,232,234,235,237,238,240,241,243,244,
245,246,248,249,250,250,251,252,253,253,254,254,254,255,255,255,
255,255,255,255,254,254,254,253,253,252,251,250,250,249,248,246,
245,244,243,241,240,238,237,235,234,232,230,228,226,224,222,220,
218,215,213,211,208,206,203,201,198,196,193,190,188,185,182,179,
176,173,170,167,165,162,158,155,152,149,146,143,140,137,134,131,
128,124,121,118,115,112,109,106,103,100, 97, 93, 90, 88, 85, 82,
79, 76, 73, 70, 67, 65, 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, 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, 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,
79, 82, 85, 88, 90, 93, 97,100,103,106,109,112,115,118,121,124};
/* Similar to above, but for an 8-bit gamma-correction table.
Copy & paste this snippet into a Python REPL to regenerate:
import math
gamma=2.6
for x in range(256):
print("{:3},".format(int(math.pow((x)/255.0,gamma)*255.0+0.5))),
if x&15 == 15: print
*/
static const uint8_t PROGMEM _gammaTable[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, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 99,100,102,103,105,106,108,109,111,112,114,115,117,119,120,
122,124,125,127,129,130,132,134,136,137,139,141,143,145,146,148,
150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,
182,184,186,188,191,193,195,197,199,202,204,206,209,211,213,215,
218,220,223,225,227,230,232,235,237,240,242,245,247,250,252,255};
uint8_t Adafruit_NeoPixel::sine8(uint8_t x) const {
return pgm_read_byte(&_sineTable[x]); // 0-255 in, 0-255 out
}
uint8_t Adafruit_NeoPixel::gamma8(uint8_t x) const {
return pgm_read_byte(&_gammaTable[x]); // 0-255 in, 0-255 out
}
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