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ledchaincomm.cpp
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// SPDX-License-Identifier: GPL-3.0-or-later
//
// Copyright (c) 2016-2023 plan44.ch / Lukas Zeller, Zurich, Switzerland
//
// Author: Lukas Zeller <luz@plan44.ch>
//
// This file is part of p44utils.
//
// p44utils is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// p44utils 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with p44utils. If not, see <http://www.gnu.org/licenses/>.
//
// File scope debugging options
// - Set ALWAYS_DEBUG to 1 to enable DBGLOG output even in non-DEBUG builds of this file
#define ALWAYS_DEBUG 0
// - set FOCUSLOGLEVEL to non-zero log level (usually, 5,6, or 7==LOG_DEBUG) to get focus (extensive logging) for this file
// Note: must be before including "logger.hpp" (or anything that includes "logger.hpp")
#define FOCUSLOGLEVEL 0
#include "ledchaincomm.hpp"
#if ENABLE_APPLICATION_SUPPORT
#include "application.hpp"
#include "p44script.hpp"
#endif
#include <math.h>
using namespace p44;
// MARK: - LEDPowerConverter
#define LEDCHAIN_DEFAULT_EXP 4 // the default exponent for the power translation
void LEDPowerConverter::createExpTable(int aTableNo, double aExponent, LEDChannelPower aMinPower)
{
mTables[aTableNo] = new LEDPowerTable;
mTables[aTableNo]->mData[0] = 0; // always 0
// find min power from the curve at brightness 1
LEDChannelPower bri1pwr = round(PWMMAX*((exp((1*aExponent)/PIXELMAX)-1)/(exp(aExponent)-1)));
int offs = aMinPower>0 ? aMinPower-bri1pwr : 0; // offset
// now calculate
for (int b=1; b<=PIXELMAX; b++) {
int pwr = 0;
if (aExponent!=0) pwr = offs+round((PWMMAX-offs)*((exp((b*aExponent)/PIXELMAX)-1)/(exp(aExponent)-1)));
mTables[aTableNo]->mData[b] = pwr>0 ? pwr : 0;
}
}
LEDPowerConverter::LEDPowerConverter(double aExponent, LEDChannelPower aMinPower)
{
createExpTable(0, aExponent, aMinPower);
// use same table for all channels
mRedPowers = mTables[0]->mData;
mGreenPowers = mTables[0]->mData;
mBluePowers = mTables[0]->mData;
mWhitePowers = mTables[0]->mData;
}
LEDPowerConverter::LEDPowerConverter(double aColorExponent, LEDChannelPower aMinRedPower, LEDChannelPower aMinGreenPower, LEDChannelPower aMinBluePower, LEDChannelPower aMinWhitePower)
{
createExpTable(0, aColorExponent, aMinRedPower);
createExpTable(1, aColorExponent, aMinGreenPower);
createExpTable(2, aColorExponent, aMinBluePower);
createExpTable(3, aColorExponent, aMinWhitePower);
// use separate table for each channel
mRedPowers = mTables[0]->mData;
mGreenPowers = mTables[1]->mData;
mBluePowers = mTables[2]->mData;
mWhitePowers = mTables[3]->mData;
}
LEDPowerConverter::LEDPowerConverter(double aColorExponent, LEDChannelPower aMinColorPower, double aWhiteExponent, LEDChannelPower aMinWhitePower)
{
// common table for RGB
createExpTable(0, aColorExponent, aMinColorPower);
mRedPowers = mTables[0]->mData;
mGreenPowers = mTables[0]->mData;
mBluePowers = mTables[0]->mData;
// separate table for white
createExpTable(1, aWhiteExponent, aMinWhitePower);
mWhitePowers = mTables[1]->mData;
}
LEDPowerConverter::~LEDPowerConverter()
{
}
static LEDPowerConverterPtr gStandardPowerConverter;
LEDPowerConverter& LEDPowerConverter::standardPowerConverter()
{
if (!gStandardPowerConverter) {
gStandardPowerConverter = new LEDPowerConverter(LEDCHAIN_DEFAULT_EXP, 0);
}
return *gStandardPowerConverter;
}
void LEDPowerConverter::powersForComponents(
PixelColorComponent aDimDown,
PixelColorComponent aRed, PixelColorComponent aGreen, PixelColorComponent aBlue, PixelColorComponent aWhite,
LEDChannelPower& aRedPwr, LEDChannelPower& aGreenPwr, LEDChannelPower& aBluePwr, LEDChannelPower& aWhitePwr
) const
{
if (aDimDown) {
uint32_t f = (uint16_t)aDimDown+1;
aRedPwr = (f*mRedPowers[aRed]) >> 8;
aGreenPwr = (f*mRedPowers[aGreen]) >> 8;
aBluePwr = (f*mRedPowers[aBlue]) >> 8;
aWhitePwr = (f*mRedPowers[aWhite]) >> 8;
}
else {
aRedPwr = mRedPowers[aRed];
aGreenPwr = mRedPowers[aGreen];
aBluePwr = mRedPowers[aBlue];
aWhitePwr = mRedPowers[aWhite];
}
}
// MARK: - LedChainComm
#if ENABLE_RPIWS281X
#define TARGET_FREQ WS2811_TARGET_FREQ // in Hz, default is 800kHz
#define GPIO_DEFAULT_PIN 18 // P1 Pin 12, GPIO 18 (PCM_CLK)
#define DMA 5 // don't change unless you know why
#define MAX_BRIGHTNESS 255 // full brightness range
#endif
// Power consumption according to
// https://www.thesmarthomehookup.com/the-complete-guide-to-selecting-individually-addressable-led-strips/
static const LEDChainComm::LedChipDesc ledChipDescriptors[LEDChainComm::num_ledchips] = {
{ "none", 0, 0, 0, 1, false },
{ "WS2811", 8, 64, 0, 1, false },
{ "WS2812", 4, 60, 0, 1, false },
{ "WS2813", 4, 85, 0, 1, false },
{ "WS2815", 24, 120, 0, 1, true },
{ "P9823", 8, 80, 0, 1, false }, // no real data, rough assumption
{ "SK6812", 6, 50, 95, 1, false },
{ "WS2816", 4, 85, 0, 2, false }, // no real data, assume same as WS2813
{ "WS2813_N", 4, 85, 0, 1, false } // old/Normandled WS2813 timing with higher T0H
};
static const char* ledLayoutNames[LEDChainComm::num_ledlayouts] = {
"none",
"RGB",
"GRB",
"RGBW",
"GRBW",
// new since 2022-11-23
"RBG",
"GBR",
"BRG",
"BGR",
"RBGW",
"GBRW",
"BRGW",
"BGRW",
};
LEDChainComm::LEDChainComm(
const string aLedType,
const string aDeviceName,
uint16_t aNumLeds,
uint16_t aLedsPerRow,
bool aXReversed,
bool aAlternating,
bool aXYSwap,
bool aYReversed,
uint16_t aInactiveStartLeds,
uint16_t aInactiveBetweenLeds,
uint16_t aInactiveEndLeds
) :
mInitialized(false)
#ifdef ESP_PLATFORM
,gpioNo(18) // sensible default
,pixels(NULL)
#elif ENABLE_RPIWS281X
#else
,ledFd(-1)
,rawBuffer(NULL)
,ledBuffer(NULL)
,rawBytes(0)
#endif
{
// set defaults
mLedChip = ledchip_none; // none defined yet
mLedLayout = ledlayout_none; // none defined yet
mTMaxPassive_uS = 0;
mMaxRetries = 0;
mNumColorComponents = 3;
mNumBytesPerComponent = 1;
// Parse led type string
// - check legacy type names
if (aLedType=="SK6812") {
mLedChip = ledchip_sk6812;
mLedLayout = ledlayout_grbw;
}
else if (aLedType=="P9823") {
mLedChip = ledchip_p9823;
mLedLayout = ledlayout_rgb;
}
else if (aLedType=="WS2815_RGB") {
mLedChip = ledchip_ws2815;
mLedLayout = ledlayout_rgb;
}
else if (aLedType=="WS2812") {
mLedChip = ledchip_ws2812;
mLedLayout = ledlayout_grb;
}
else if (aLedType=="WS2813") {
mLedChip = ledchip_ws2813;
mLedLayout = ledlayout_grb;
}
else {
// Modern led definitions
// <chip>.<layout>[.<TMaxPassive_uS>[.<maxRetries>]]
const char* cP = aLedType.c_str();
string part;
if (nextPart(cP, part, '.')) {
// chip
for (int i=0; i<num_ledchips; i++) { if (uequals(part, ledChipDescriptors[i].name)) { mLedChip = (LedChip)i; break; } };
}
if (nextPart(cP, part, '.')) {
// layout
for (int i=0; i<num_ledlayouts; i++) { if (uequals(part, ledLayoutNames[i])) { mLedLayout = (LedLayout)i; break; } };
}
if (nextPart(cP, part, '.')) {
// custom TPassive_max_nS
mTMaxPassive_uS = atoi(part.c_str());
}
if (nextPart(cP, part, '.')) {
// custom maxrepeat
mMaxRetries = atoi(part.c_str());
}
}
// device name/channel
mDeviceName = aDeviceName;
mNumColorComponents = ledChipDescriptors[mLedChip].whiteChannelMw>0 ? 4 : 3;
mNumBytesPerComponent = ledChipDescriptors[mLedChip].numBytesPerChannel;
mInactiveStartLeds = aInactiveStartLeds;
mInactiveBetweenLeds = aInactiveBetweenLeds;
mInactiveEndLeds = aInactiveEndLeds;
// number of LEDs
mNumLeds = aNumLeds;
if (aLedsPerRow==0) {
mLedsPerRow = aNumLeds-aInactiveStartLeds; // single row
mNumRows = 1;
}
else {
mLedsPerRow = aLedsPerRow; // set row size
mNumRows = (mNumLeds-1-mInactiveStartLeds-mInactiveEndLeds)/(mLedsPerRow+mInactiveBetweenLeds)+1; // calculate number of (full or partial) rows
}
mXReversed = aXReversed;
mYReversed = aYReversed;
mAlternating = aAlternating;
mXYSwap = aXYSwap;
// make sure operation ends when mainloop terminates
MainLoop::currentMainLoop().registerCleanupHandler(boost::bind(&LEDChainComm::end, this));
}
LEDChainComm::~LEDChainComm()
{
// end the operation when object gets deleted
end();
}
void LEDChainComm::setChainDriver(LEDChainCommPtr aLedChainComm)
{
mChainDriver = aLedChainComm;
}
void LEDChainComm::setPowerConverter(const LEDPowerConverterPtr aLedPowerConverter)
{
mLEDPowerConverter = aLedPowerConverter;
}
const LEDPowerConverter& LEDChainComm::powerConverter()
{
if (!mLEDPowerConverter) {
if (mChainDriver) {
mLEDPowerConverter = const_cast<LEDPowerConverter *>(&(mChainDriver->powerConverter())); // use the chain driver's converter
}
else {
mLEDPowerConverter = &LEDPowerConverter::standardPowerConverter(); // use the standard converter
}
}
return *mLEDPowerConverter.get();
}
const LEDChainComm::LedChipDesc &LEDChainComm::ledChipDescriptor() const
{
return ledChipDescriptors[mLedChip];
}
// MARK: - LEDChainComm physical LED chain driver
#ifdef ESP_PLATFORM
static bool gEsp32_ws281x_initialized = false;
#define ESP32_LEDCHAIN_MAX_RETRIES 3
#endif // CONFIG_P44UTILS_DIGITAL_LED_LIB
bool LEDChainComm::begin(size_t aHintAtTotalChains)
{
if (!mInitialized) {
if (mChainDriver) {
// another LED chain outputs to the hardware, make sure that one is up
mInitialized = mChainDriver->begin();
}
else {
#ifdef ESP_PLATFORM
#if PWMBITS!=8
#error "16-bit LEDs not yet implemented"
#endif
if (mDeviceName.substr(0,4)=="gpio") {
sscanf(mDeviceName.c_str()+4, "%d", &gpioNo);
}
// make sure library is initialized
if (!gEsp32_ws281x_initialized) {
FOCUSLOG("calling esp_ws281x_init for %d chains", aHintAtTotalChains);
esp_ws281x_init((int)aHintAtTotalChains);
gEsp32_ws281x_initialized = true;
}
// add this chain
// TODO: refactor low level driver to use separate chip/layout params, too
Esp_ws281x_LedType elt;
switch (mLedChip) {
case ledchip_ws2811:
case ledchip_ws2812:
elt = esp_ledtype_ws2812;
break;
case ledchip_sk6812:
elt = esp_ledtype_sk6812;
break;
case ledchip_p9823:
elt = esp_ledtype_p9823;
break;
case ledchip_ws2815:
if (mLedLayout==ledlayout_rgb) elt = esp_ledtype_ws2815_rgb;
else elt = esp_ledtype_ws2813;
break;
case ledchip_ws2813:
case ledchip_ws2813n:
default:
elt = esp_ledtype_ws2813;
break;
}
espLedChain = esp_ws281x_newChain(elt, gpioNo, ESP32_LEDCHAIN_MAX_RETRIES);
if (espLedChain) {
// prepare buffer
if (pixels) {
delete[] pixels;
pixels = NULL;
}
pixels = new Esp_ws281x_pixel[mNumLeds];
mInitialized = true;
clear();
}
else {
LOG(LOG_ERR, "Error: esp_ws281x_newChain failed");
return false; // cannot initialize LED chain
}
#elif ENABLE_RPIWS281X
int gpio = GPIO_DEFAULT_PIN;
bool inverted = false;
size_t n=0;
if (mDeviceName.substr(n,1)=="!") {
inverted = true;
n++;
}
if (mDeviceName.substr(n,4)=="gpio") {
sscanf(mDeviceName.c_str()+4, "%d", &gpio);
}
// prepare hardware related stuff
memset(&mRPiWS281x, 0, sizeof(mRPiWS281x));
// initialize the led string structure
mRPiWS281x.freq = TARGET_FREQ;
mRPiWS281x.dmanum = DMA;
mRPiWS281x.device = NULL; // private data pointer for library
// channel 0
mRPiWS281x.channel[0].gpionum = gpio;
mRPiWS281x.channel[0].count = mNumLeds;
mRPiWS281x.channel[0].invert = inverted ? 1 : 0;
mRPiWS281x.channel[0].brightness = MAX_BRIGHTNESS;
// map chips/layouts
switch (mLedChip) {
case ledchip_sk6812: {
// 4 channel, "SK6812" in RPIWS281X lingo
switch (mLedLayout) {
default:
case ledlayout_rgbw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_RGBW; break;
case ledlayout_rbgw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_RBGW; break;
case ledlayout_grbw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_GRBW; break;
case ledlayout_gbrw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_GBRW; break;
case ledlayout_brgw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_BRGW; break;
case ledlayout_bgrw: mRPiWS281x.channel[0].strip_type = SK6812_STRIP_BGRW; break;
}
break;
}
default:
case ledchip_ws2811:
case ledchip_ws2812:
case ledchip_ws2813:
case ledchip_ws2813n:
case ledchip_ws2815:
case ledchip_p9823: {
switch (mLedLayout) {
case ledlayout_rgb: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_RGB; break;
case ledlayout_rbg: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_RBG; break;
default:
case ledlayout_grb: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_GRB; break;
case ledlayout_gbr: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_GBR; break;
case ledlayout_brg: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_BRG; break;
case ledlayout_bgr: mRPiWS281x.channel[0].strip_type = WS2811_STRIP_BGR; break;
}
break;
}
case ledchip_ws2816:
// FIXME: workaround, use two RGB (non-swapped) 8-bit for one 16-bit LED
mRPiWS281x.channel[0].count = mNumLeds*2;
mRPiWS281x.channel[0].strip_type = WS2811_STRIP_RGB;
break;
}
mRPiWS281x.channel[0].leds = NULL; // will be allocated by the library
// channel 1 - unused
mRPiWS281x.channel[1].gpionum = 0;
mRPiWS281x.channel[1].count = 0;
mRPiWS281x.channel[1].invert = 0;
mRPiWS281x.channel[1].brightness = MAX_BRIGHTNESS;
mRPiWS281x.channel[1].leds = NULL; // will be allocated by the library
// initialize library
ws2811_return_t ret = ws2811_init(&mRPiWS281x);
if (ret==WS2811_SUCCESS) {
mInitialized = true;
}
else {
LOG(LOG_ERR, "Error: ws281x init for GPIO%d failed: %s", gpio, ws2811_get_return_t_str(ret));
mInitialized = false;
}
#else
// Allocate led buffer
if (rawBuffer) {
delete[] rawBuffer;
rawBuffer = NULL;
ledBuffer = NULL;
rawBytes = 0;
}
if (mLedChip!=ledchip_none) {
const int hdrsize = 5; // v6 header size
rawBytes = mNumColorComponents*mNumBytesPerComponent*mNumLeds+1+hdrsize;
rawBuffer = new uint8_t[rawBytes];
ledBuffer = rawBuffer+1+hdrsize; // led data starts here
// prepare header for p44-ledchain v6 and later compatible drivers
rawBuffer[0] = hdrsize; // driver v6 header size
rawBuffer[1] = mLedLayout;
rawBuffer[2] = mLedChip;
rawBuffer[3] = (mTMaxPassive_uS>>8) & 0xFF;
rawBuffer[4] = (mTMaxPassive_uS) & 0xFF;
rawBuffer[5] = mMaxRetries;
}
else {
// chip not known here: must be legacy driver w/o header
rawBytes = mNumColorComponents*mNumBytesPerComponent*mNumLeds;
rawBuffer = new uint8_t[rawBytes];
ledBuffer = rawBuffer;
}
memset(ledBuffer, 0, mNumColorComponents*mNumBytesPerComponent*mNumLeds);
ledFd = open(mDeviceName.c_str(), O_RDWR);
if (ledFd>=0) {
mInitialized = true;
}
else {
LOG(LOG_ERR, "Error: Cannot open LED chain device '%s'", mDeviceName.c_str());
mInitialized = false;
}
#endif
}
}
return mInitialized;
}
void LEDChainComm::clear()
{
if (!mInitialized) return;
if (mChainDriver) {
// this is just a secondary mapping on a primary chain: clear only the actually mapped LEDs
for (uint16_t led = mInactiveStartLeds; led<mNumLeds-mInactiveEndLeds; led++) {
mChainDriver->setPower(led, 0, 0, 0, 0);
}
}
else {
// this is the master driver, clear the entire buffer
#ifdef ESP_PLATFORM
for (uint16_t i=0; i<mNumLeds; i++) pixels[i].num = 0;
#elif ENABLE_RPIWS281X
// FIXME: workaround, use two 8-bit for one 16-bit LED
for (uint16_t i=0; i<mNumLeds*mNumBytesPerComponent; i++) mRPiWS281x.channel[0].leds[i] = 0;
#else
memset(ledBuffer, 0, mNumColorComponents*mNumBytesPerComponent*mNumLeds);
#endif
}
}
void LEDChainComm::end()
{
if (mInitialized) {
if (!mChainDriver) {
#ifdef ESP_PLATFORM
if (pixels) {
delete[] pixels;
pixels = NULL;
}
esp_ws281x_freeChain(espLedChain);
espLedChain = NULL;
#elif ENABLE_RPIWS281X
// deinitialize library
ws2811_fini(&mRPiWS281x);
#else
if (rawBuffer) {
delete[] rawBuffer;
rawBuffer = NULL;
ledBuffer = NULL;
rawBytes = 0;
}
if (ledFd>=0) {
close(ledFd);
ledFd = -1;
}
#endif
}
}
mInitialized = false;
}
void LEDChainComm::show()
{
if (!mChainDriver) {
// Note: no operation if this is only a secondary mapping - primary driver will update the hardware
if (!mInitialized) return;
#ifdef ESP_PLATFORM
esp_ws281x_setColors(espLedChain, mNumLeds, pixels);
#elif ENABLE_RPIWS281X
ws2811_render(&mRPiWS281x);
#else
write(ledFd, rawBuffer, rawBytes); // with header
#endif
}
}
#if LEDCHAIN_LEGACY_API && PWMBITS==8
void LEDChainComm::setColorAtLedIndex(uint16_t aLedIndex, uint8_t aRed, uint8_t aGreen, uint8_t aBlue, uint8_t aWhite)
{
// get power (PWM values)
uint8_t r = pwmtable[aRed];
uint8_t g = pwmtable[aGreen];
uint8_t b = pwmtable[aBlue];
uint8_t w = pwmtable[aWhite];
setPowerAtLedIndex(aLedIndex, r, g, b, w);
}
#if LEDCHAIN_READBACK
void LEDChainComm::getColorAtLedIndex(uint16_t aLedIndex, uint8_t &aRed, uint8_t &aGreen, uint8_t &aBlue, uint8_t &aWhite)
{
uint8_t r,g,b,w;
getPowerAtLedIndex(aLedIndex, r, g, b, w);
aRed = brightnesstable[r];
aGreen = brightnesstable[g];
aBlue = brightnesstable[b];
aWhite = brightnesstable[w];
}
#endif // LEDCHAIN_READBACK
#endif // LEDCHAIN_LEGACY_API && PWMBITS==8
#if PWMBITS==8
static uint8_t pwmTo8Bits(LEDChannelPower aPWM)
{
return aPWM;
}
#else
uint8_t pwmTo8Bits(LEDChannelPower aPWM)
{
if (aPWM>=0xFF80) return 0xFF;
return ((aPWM+0x66)>>8); // 0x66 empirically determined, least rounding errors compared with real 8bit table
}
#endif
void LEDChainComm::setPowerAtLedIndex(uint16_t aLedIndex, LEDChannelPower aRed, LEDChannelPower aGreen, LEDChannelPower aBlue, LEDChannelPower aWhite)
{
if (mChainDriver) {
// delegate actual output
mChainDriver->setPowerAtLedIndex(aLedIndex, aRed, aGreen, aBlue, aWhite);
}
else {
// local driver, store change in my own LED buffer
if (aLedIndex>=mNumLeds) return;
#ifdef ESP_PLATFORM
#if PWMBITS!=8
#error "16-bit LEDs not yet implemented"
#endif
if (!pixels) return;
pixels[aLedIndex] = esp_ws281x_makeRGBVal(aRed, aGreen, aBlue, aWhite);
#elif ENABLE_RPIWS281X
#if PWMBITS!=16
#error "implementation is for 16-bit PWM only"
#endif
if (mNumBytesPerComponent>1) {
// FIXME: workaround, only works with GRB WS2816 for now
// spread over 2 leds
aLedIndex<<1;
// - G-MSB, G-LSB, R-MSB
ws2811_led_t pixel =
((uint32_t)((uint8_t)(aGreen>>8)) << 16) |
((uint32_t)((uint8_t)(aGreen&0xFF)) << 8) |
((uint32_t)((uint8_t)(aRed>>8)));
mRPiWS281x.channel[0].leds[aLedIndex++] = pixel;
// - R-LSB, B-MSB, B-LSB
pixel =
((uint32_t)((uint8_t)(aRed&0xFF)) << 16) |
((uint32_t)((uint8_t)(aBlue>>8)) << 8) |
((uint32_t)((uint8_t)(aBlue&0xFF)));
mRPiWS281x.channel[0].leds[aLedIndex] = pixel;
}
else {
// 8-bit LEDs
ws2811_led_t pixel =
((uint32_t)pwmTo8Bits(aRed) << 16) |
((uint32_t)pwmTo8Bits(aGreen) << 8) |
((uint32_t)pwmTo8Bits(aBlue));
if (mNumColorComponents>3) {
pixel |= ((uint32_t)pwmTo8Bits(aWhite) << 24);
}
mRPiWS281x.channel[0].leds[aLedIndex] = pixel;
}
#else
#if PWMBITS!=16
#error "implementation is for 16-bit PWM only"
#endif
int byteindex = mNumColorComponents*aLedIndex;
if (mNumBytesPerComponent>1) {
// 16 bit
byteindex = byteindex<<1; // double number of bytes
ledBuffer[byteindex++] = aRed>>8;
ledBuffer[byteindex++] = aRed & 0xFF;
ledBuffer[byteindex++] = aGreen>>8;
ledBuffer[byteindex++] = aGreen & 0xFF;
ledBuffer[byteindex++] = aBlue>>8;
ledBuffer[byteindex++] = aBlue & 0xFF;
if (mNumColorComponents>3) {
ledBuffer[byteindex++] = aWhite>>8;
ledBuffer[byteindex++] = aWhite & 0xFF;
}
}
else {
// 8bit, send MSB only
ledBuffer[byteindex++] = pwmTo8Bits(aRed);
ledBuffer[byteindex++] = pwmTo8Bits(aGreen);
ledBuffer[byteindex++] = pwmTo8Bits(aBlue);
if (mNumColorComponents>3) {
ledBuffer[byteindex++] = pwmTo8Bits(aWhite);
}
}
#endif
}
}
#if LEDCHAIN_READBACK
void LEDChainComm::getPowerAtLedIndex(uint16_t aLedIndex, LEDChannelPower &aRed, LEDChannelPower &aGreen, LEDChannelPower &aBlue, LEDChannelPower &aWhite)
{
if (mChainDriver) {
// delegate actual output
mChainDriver->getPowerAtLedIndex(aLedIndex, aRed, aGreen, aBlue, aWhite);
}
else {
if (aLedIndex>=mNumLeds) return;
#ifdef ESP_PLATFORM
#if PWMBITS!=8
#error "16-bit LEDs not yet implemented"
#endif
if (!pixels) return;
Esp_ws281x_pixel &pixel = pixels[aLedIndex];
aRed = pixel.r;
aGreen = pixel.g;
aBlue = pixel.b;
aWhite = pixel.w;
#elif ENABLE_RPIWS281X
#if PWMBITS!=16
#error "implementation is for 16-bit PWM only"
#endif
if (mNumBytesPerComponent>1) {
// FIXME: workaround, only works with GRB WS2816 for now
// spread over 2 leds
aLedIndex<<1;
// - G-MSB, G-LSB, R-MSB
ws2811_led_t pixel1 = mRPiWS281x.channel[0].leds[aLedIndex];
// - R-LSB, B-MSB, B-LSB
ws2811_led_t pixel2 = mRPiWS281x.channel[1].leds[aLedIndex];
aGreen = ((pixel1>>8) & 0xFFFF);
aRed = ((pixel1<<8) & 0xFF00) + ((pixel2>>16) & 0xFF);
aBlue = (pixel2 & 0xFFFF);
}
else {
// 8-bit LED
ws2811_led_t pixel = mRPiWS281x.channel[0].leds[aLedIndex];
aRed = pwmFrom8Bits((pixel>>16) & 0xFF);
aGreen = pwmFrom8Bits((pixel>>8) & 0xFF);
aBlue = pwmFrom8Bits(pixel & 0xFF);
if (mNumColorComponents>3) {
aWhite = pwmFrom8Bits((pixel>>24) & 0xFF);
}
else {
aWhite = 0;
}
}
#else
#if PWMBITS!=16
#error "implementation is for 16-bit PWM only"
#endif
int byteindex = mNumColorComponents*aLedIndex;
if (mNumBytesPerComponent>1) {
// 16-bit
byteindex = byteindex<<1;
aRed = ((LEDChannelPower)ledBuffer[byteindex++]<<8);
aRed |= ledBuffer[byteindex++];
aGreen = ((LEDChannelPower)ledBuffer[byteindex++]<<8);
aGreen |= ledBuffer[byteindex++];
aBlue = ((LEDChannelPower)ledBuffer[byteindex++]<<8);
aBlue |= ledBuffer[byteindex++];
if (mNumColorComponents>3) {
aWhite = ((LEDChannelPower)ledBuffer[byteindex++]<<8);
aWhite |= ledBuffer[byteindex++];
}
}
else {
// 8-bit
aRed = pwmFrom8Bits((LEDChannelPower)ledBuffer[byteindex++]);
aGreen = pwmFrom8Bits((LEDChannelPower)ledBuffer[byteindex++]);
aBlue = pwmFrom8Bits((LEDChannelPower)ledBuffer[byteindex++]);
if (mNumColorComponents>3) {
aWhite = pwmFrom8Bits((LEDChannelPower)ledBuffer[byteindex++]);
}
else {
aWhite = 0;
}
}
#endif
}
}
#endif // LEDCHAIN_READBACK
// MARK: - LEDChainComm logical LED access
uint16_t LEDChainComm::getNumLeds()
{
return mNumLeds-mInactiveStartLeds-mInactiveEndLeds-(mNumRows-1)*mInactiveBetweenLeds;
}
uint16_t LEDChainComm::getSizeX()
{
return mXYSwap ? mNumRows : mLedsPerRow;
}
uint16_t LEDChainComm::getSizeY()
{
return mXYSwap ? mLedsPerRow : mNumRows;
}
PixelColorComponent LEDChainComm::getMinVisibleColorIntensity()
{
// return highest brightness that still produces lowest non-zero output.
// TODO: maybe find more accurate way to detect lowest visible brightness
return 1;
}
uint16_t LEDChainComm::ledIndexFromXY(uint16_t aX, uint16_t aY)
{
//FOCUSLOG("ledIndexFromXY: X=%d, Y=%d", aX, aY);
if (mXYSwap) { uint16_t tmp = aY; aY = aX; aX = tmp; }
if (mYReversed) { aY = mNumRows-1-aY; }
uint16_t ledindex = aY*(mLedsPerRow+mInactiveBetweenLeds);
bool reversed = mXReversed;
if (mAlternating) {
if (aY & 0x1) reversed = !reversed;
}
if (reversed) {
ledindex += (mLedsPerRow-1-aX);
}
else {
ledindex += aX;
}
//FOCUSLOG("--> ledIndex=%d", ledindex);
return ledindex+mInactiveStartLeds;
}
#if LEDCHAIN_LEGACY_API && PWMBITS==8
void LEDChainComm::setColorXY(uint16_t aX, uint16_t aY, uint8_t aRed, uint8_t aGreen, uint8_t aBlue, uint8_t aWhite)
{
uint16_t ledindex = ledIndexFromXY(aX,aY);
setColorAtLedIndex(ledindex, aRed, aGreen, aBlue, aWhite);
}
void LEDChainComm::setColor(uint16_t aLedNumber, uint8_t aRed, uint8_t aGreen, uint8_t aBlue, uint8_t aWhite)
{
//FOCUSLOG("setColor: ledNumber=%d - sizeX=%d, sizeY=%d", aLedNumber, getSizeX(), getSizeY());
int y = aLedNumber / getSizeX();
int x = aLedNumber % getSizeX();
setColorXY(x, y, aRed, aGreen, aBlue, aWhite);
}
void LEDChainComm::setColorDimmedXY(uint16_t aX, uint16_t aY, uint8_t aRed, uint8_t aGreen, uint8_t aBlue, uint8_t aWhite, uint8_t aBrightness)
{
setColorXY(aX, aY, (aRed*aBrightness)>>8, (aGreen*aBrightness)>>8, (aBlue*aBrightness)>>8, (aWhite*aBrightness)>>8);
}
void LEDChainComm::setColorDimmed(uint16_t aLedNumber, uint8_t aRed, uint8_t aGreen, uint8_t aBlue, uint8_t aWhite, uint8_t aBrightness)
{
int y = aLedNumber / getSizeX();
int x = aLedNumber % getSizeX();
setColorDimmedXY(x, y, aRed, aGreen, aBlue, aWhite, aBrightness);
}
#if LEDCHAIN_READBACK
void LEDChainComm::getColor(uint16_t aLedNumber, uint8_t &aRed, uint8_t &aGreen, uint8_t &aBlue, uint8_t &aWhite)
{
int y = aLedNumber / getSizeX();
int x = aLedNumber % getSizeX();
getColorXY(x, y, aRed, aGreen, aBlue, aWhite);
}
void LEDChainComm::getColorXY(uint16_t aX, uint16_t aY, uint8_t &aRed, uint8_t &aGreen, uint8_t &aBlue, uint8_t &aWhite)
{
uint16_t ledindex = ledIndexFromXY(aX,aY);
getColorAtLedIndex(ledindex, aRed, aGreen, aBlue, aWhite);
}
#endif // LEDCHAIN_READBACK
#endif // LEDCHAIN_LEGACY_API && PWMBITS==8
void LEDChainComm::setPowerXY(uint16_t aX, uint16_t aY, LEDChannelPower aRed, LEDChannelPower aGreen, LEDChannelPower aBlue, LEDChannelPower aWhite)
{
uint16_t ledindex = ledIndexFromXY(aX,aY);
setPowerAtLedIndex(ledindex, aRed, aGreen, aBlue, aWhite);
}
void LEDChainComm::setPower(uint16_t aLedNumber, LEDChannelPower aRed, LEDChannelPower aGreen, LEDChannelPower aBlue, LEDChannelPower aWhite)
{
int y = aLedNumber / getSizeX();
int x = aLedNumber % getSizeX();
setPowerXY(x, y, aRed, aGreen, aBlue, aWhite);
}
#if LEDCHAIN_READBACK
void LEDChainComm::getPowerXY(uint16_t aX, uint16_t aY, LEDChannelPower &aRed, LEDChannelPower &aGreen, LEDChannelPower &aBlue, LEDChannelPower &aWhite)
{
uint16_t ledindex = ledIndexFromXY(aX,aY);
getPowerAtLedIndex(ledindex, aRed, aGreen, aBlue, aWhite);
}
#endif
#if ENABLE_P44LRGRAPHICS
// MARK: - LEDChainArrangement
#if DEBUG
#define MAX_STEP_INTERVAL (10*Second) // run a step at least in this interval, even if view step() indicates no need to do so early
#define MAX_UPDATE_INTERVAL (10*Second) // send an update at least this often, even if no changes happen (LED refresh)
#else
#define MAX_STEP_INTERVAL (1*Second) // run a step at least in this interval, even if view step() indicates no need to do so early
#define MAX_UPDATE_INTERVAL (500*MilliSecond) // send an update at least this often, even if no changes happen (LED refresh)
#endif
#define DEFAULT_MIN_UPDATE_INTERVAL (15*MilliSecond) // do not send updates faster than this
#define DEFAULT_MAX_PRIORITY_INTERVAL (50*MilliSecond) // allow synchronizing prioritized timing for this timespan after the last LED refresh
#define MAX_SLOW_WARN_INTERVAL (10*Second) // how often (max) the timing violation detection will be logged
LEDChainArrangement::LEDChainArrangement() :
mStarted(false),
mCovers(zeroRect),
mPowerLimitMw(0),
mRequestedLightPowerMw(0),
mActualLightPowerMw(0),
mPowerLimited(false),
mLastUpdate(Never),
mMinUpdateInterval(DEFAULT_MIN_UPDATE_INTERVAL),
mMaxPriorityInterval(DEFAULT_MAX_PRIORITY_INTERVAL),
mSlowDetected(Never)
{
#if ENABLE_P44SCRIPT && ENABLE_P44LRGRAPHICS && ENABLE_VIEWCONFIG
// install p44script lookup providing "ledchain" global
// Note: assuming only ONE ledchain arrangement per application.
// TODO: Nothing currently prevents instantiating multiple, but makes no sense
p44::P44Script::StandardScriptingDomain::sharedDomain().registerMemberLookup(
new P44Script::LEDChainLookup(*this)
);
#endif // ENABLE_P44SCRIPT
}
LEDChainArrangement::~LEDChainArrangement()
{
end();
}
void LEDChainArrangement::clear()
{
for(LedChainVector::iterator pos = mLedChains.begin(); pos!=mLedChains.end(); ++pos) {
pos->ledChain->clear();
pos->ledChain->show();
}
}
void LEDChainArrangement::setRootView(P44ViewPtr aRootView)
{
if (mRootView) {
mRootView->setNeedUpdateCB(NoOP); // make sure previous rootview will not call back any more!
}
mRootView = aRootView;
mRootView->setDefaultLabel("rootview");
mRootView->setNeedUpdateCB(boost::bind(&LEDChainArrangement::externalUpdateRequest, this));
mRootView->setMinUpdateInterval(mMinUpdateInterval);
}
void LEDChainArrangement::setMinUpdateInterval(MLMicroSeconds aMinUpdateInterval)
{
mMinUpdateInterval = aMinUpdateInterval;
if (mRootView) mRootView->setMinUpdateInterval(mMinUpdateInterval);
}
void LEDChainArrangement::setMaxPriorityInterval(MLMicroSeconds aMaxPriorityInterval)
{
mMaxPriorityInterval = aMaxPriorityInterval;
}
#if ENABLE_P44LRGRAPHICS
#include "viewfactory.hpp"
#endif