Tasmota/sonoff/xplg_ws2812.ino

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/*
xplg_ws2812.ino - ws2812 led string support for Sonoff-Tasmota
Copyright (C) 2019 Heiko Krupp and Theo Arends
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_WS2812
/*********************************************************************************************\
* WS2812 RGB / RGBW Leds using NeopixelBus library
\*********************************************************************************************/
#include <NeoPixelBus.h>
#if (USE_WS2812_CTYPE == NEO_GRB)
typedef NeoGrbFeature selectedNeoFeatureType;
#elif (USE_WS2812_CTYPE == NEO_BRG)
typedef NeoBrgFeature selectedNeoFeatureType;
#elif (USE_WS2812_CTYPE == NEO_RBG)
typedef NeoRbgFeature selectedNeoFeatureType;
#elif (USE_WS2812_CTYPE == NEO_RGBW)
typedef NeoRgbwFeature selectedNeoFeatureType;
#elif (USE_WS2812_CTYPE == NEO_GRBW)
typedef NeoGrbwFeature selectedNeoFeatureType;
#else // USE_WS2812_CTYPE
typedef NeoRgbFeature selectedNeoFeatureType;
#endif // USE_WS2812_CTYPE
#ifdef USE_WS2812_DMA
typedef Neo800KbpsMethod selectedNeoSpeedType;
#else // USE_WS2812_DMA
typedef NeoEsp8266BitBang800KbpsMethod selectedNeoSpeedType;
#endif // USE_WS2812_DMA
NeoPixelBus<selectedNeoFeatureType, selectedNeoSpeedType> *strip = nullptr;
struct WsColor {
uint8_t red, green, blue;
};
struct ColorScheme {
WsColor* colors;
uint8_t count;
};
WsColor kIncandescent[2] = { 255,140,20, 0,0,0 };
WsColor kRgb[3] = { 255,0,0, 0,255,0, 0,0,255 };
WsColor kChristmas[2] = { 255,0,0, 0,255,0 };
WsColor kHanukkah[2] = { 0,0,255, 255,255,255 };
WsColor kwanzaa[3] = { 255,0,0, 0,0,0, 0,255,0 };
WsColor kRainbow[7] = { 255,0,0, 255,128,0, 255,255,0, 0,255,0, 0,0,255, 128,0,255, 255,0,255 };
WsColor kFire[3] = { 255,0,0, 255,102,0, 255,192,0 };
ColorScheme kSchemes[WS2812_SCHEMES] = {
kIncandescent, 2,
kRgb, 3,
kChristmas, 2,
kHanukkah, 2,
kwanzaa, 3,
kRainbow, 7,
kFire, 3 };
uint8_t kWidth[5] = {
1, // Small
2, // Medium
4, // Large
8, // Largest
255 }; // All
uint8_t kWsRepeat[5] = {
8, // Small
6, // Medium
4, // Large
2, // Largest
1 }; // All
uint8_t ws_show_next = 1;
bool ws_suspend_update = false;
/********************************************************************************************/
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void Ws2812StripShow(void)
{
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor c;
#else
RgbColor c;
#endif
if (Settings.light_correction) {
for (uint16_t i = 0; i < Settings.light_pixels; i++) {
c = strip->GetPixelColor(i);
c.R = ledGamma(c.R);
c.G = ledGamma(c.G);
c.B = ledGamma(c.B);
#if (USE_WS2812_CTYPE > NEO_3LED)
c.W = ledGamma(c.W);
#endif
strip->SetPixelColor(i, c);
}
}
strip->Show();
}
int mod(int a, int b)
{
int ret = a % b;
if (ret < 0) ret += b;
return ret;
}
void Ws2812UpdatePixelColor(int position, struct WsColor hand_color, float offset)
{
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor color;
#else
RgbColor color;
#endif
uint16_t mod_position = mod(position, (int)Settings.light_pixels);
color = strip->GetPixelColor(mod_position);
float dimmer = 100 / (float)Settings.light_dimmer;
color.R = tmin(color.R + ((hand_color.red / dimmer) * offset), 255);
color.G = tmin(color.G + ((hand_color.green / dimmer) * offset), 255);
color.B = tmin(color.B + ((hand_color.blue / dimmer) * offset), 255);
strip->SetPixelColor(mod_position, color);
}
void Ws2812UpdateHand(int position, uint8_t index)
{
position = (position + Settings.light_rotation) % Settings.light_pixels;
if (Settings.flag.ws_clock_reverse) position = Settings.light_pixels -position;
WsColor hand_color = { Settings.ws_color[index][WS_RED], Settings.ws_color[index][WS_GREEN], Settings.ws_color[index][WS_BLUE] };
Ws2812UpdatePixelColor(position, hand_color, 1);
uint8_t range = 1;
if (index < WS_MARKER) range = ((Settings.ws_width[index] -1) / 2) +1;
for (uint8_t h = 1; h < range; h++) {
float offset = (float)(range - h) / (float)range;
Ws2812UpdatePixelColor(position -h, hand_color, offset);
Ws2812UpdatePixelColor(position +h, hand_color, offset);
}
}
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void Ws2812Clock(void)
{
strip->ClearTo(0); // Reset strip
int clksize = 60000 / (int)Settings.light_pixels;
Ws2812UpdateHand((RtcTime.second * 1000) / clksize, WS_SECOND);
Ws2812UpdateHand((RtcTime.minute * 1000) / clksize, WS_MINUTE);
Ws2812UpdateHand((((RtcTime.hour % 12) * 5000) + ((RtcTime.minute * 1000) / 12 )) / clksize, WS_HOUR);
if (Settings.ws_color[WS_MARKER][WS_RED] + Settings.ws_color[WS_MARKER][WS_GREEN] + Settings.ws_color[WS_MARKER][WS_BLUE]) {
for (uint8_t i = 0; i < 12; i++) {
Ws2812UpdateHand((i * 5000) / clksize, WS_MARKER);
}
}
Ws2812StripShow();
}
void Ws2812GradientColor(uint8_t schemenr, struct WsColor* mColor, uint16_t range, uint16_t gradRange, uint16_t i)
{
/*
* Compute the color of a pixel at position i using a gradient of the color scheme.
* This function is used internally by the gradient function.
*/
ColorScheme scheme = kSchemes[schemenr];
uint16_t curRange = i / range;
uint16_t rangeIndex = i % range;
uint16_t colorIndex = rangeIndex / gradRange;
uint16_t start = colorIndex;
uint16_t end = colorIndex +1;
if (curRange % 2 != 0) {
start = (scheme.count -1) - start;
end = (scheme.count -1) - end;
}
float dimmer = 100 / (float)Settings.light_dimmer;
float fmyRed = (float)map(rangeIndex % gradRange, 0, gradRange, scheme.colors[start].red, scheme.colors[end].red) / dimmer;
float fmyGrn = (float)map(rangeIndex % gradRange, 0, gradRange, scheme.colors[start].green, scheme.colors[end].green) / dimmer;
float fmyBlu = (float)map(rangeIndex % gradRange, 0, gradRange, scheme.colors[start].blue, scheme.colors[end].blue) / dimmer;
mColor->red = (uint8_t)fmyRed;
mColor->green = (uint8_t)fmyGrn;
mColor->blue = (uint8_t)fmyBlu;
}
void Ws2812Gradient(uint8_t schemenr)
{
/*
* This routine courtesy Tony DiCola (Adafruit)
* Display a gradient of colors for the current color scheme.
* Repeat is the number of repetitions of the gradient (pick a multiple of 2 for smooth looping of the gradient).
*/
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor c;
c.W = 0;
#else
RgbColor c;
#endif
ColorScheme scheme = kSchemes[schemenr];
if (scheme.count < 2) return;
uint8_t repeat = kWsRepeat[Settings.light_width]; // number of scheme.count per ledcount
uint16_t range = (uint16_t)ceil((float)Settings.light_pixels / (float)repeat);
uint16_t gradRange = (uint16_t)ceil((float)range / (float)(scheme.count - 1));
uint16_t speed = ((Settings.light_speed * 2) -1) * (STATES / 10);
uint16_t offset = speed > 0 ? strip_timer_counter / speed : 0;
WsColor oldColor, currentColor;
Ws2812GradientColor(schemenr, &oldColor, range, gradRange, offset);
currentColor = oldColor;
for (uint16_t i = 0; i < Settings.light_pixels; i++) {
if (kWsRepeat[Settings.light_width] > 1) {
Ws2812GradientColor(schemenr, &currentColor, range, gradRange, i +offset);
}
if (Settings.light_speed > 0) {
// Blend old and current color based on time for smooth movement.
c.R = map(strip_timer_counter % speed, 0, speed, oldColor.red, currentColor.red);
c.G = map(strip_timer_counter % speed, 0, speed, oldColor.green, currentColor.green);
c.B = map(strip_timer_counter % speed, 0, speed, oldColor.blue, currentColor.blue);
}
else {
// No animation, just use the current color.
c.R = currentColor.red;
c.G = currentColor.green;
c.B = currentColor.blue;
}
strip->SetPixelColor(i, c);
oldColor = currentColor;
}
Ws2812StripShow();
}
void Ws2812Bars(uint8_t schemenr)
{
/*
* This routine courtesy Tony DiCola (Adafruit)
* Display solid bars of color for the current color scheme.
* Width is the width of each bar in pixels/lights.
*/
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor c;
c.W = 0;
#else
RgbColor c;
#endif
uint16_t i;
ColorScheme scheme = kSchemes[schemenr];
uint16_t maxSize = Settings.light_pixels / scheme.count;
if (kWidth[Settings.light_width] > maxSize) maxSize = 0;
uint16_t speed = ((Settings.light_speed * 2) -1) * (STATES / 10);
uint8_t offset = speed > 0 ? strip_timer_counter / speed : 0;
WsColor mcolor[scheme.count];
memcpy(mcolor, scheme.colors, sizeof(mcolor));
float dimmer = 100 / (float)Settings.light_dimmer;
for (i = 0; i < scheme.count; i++) {
float fmyRed = (float)mcolor[i].red / dimmer;
float fmyGrn = (float)mcolor[i].green / dimmer;
float fmyBlu = (float)mcolor[i].blue / dimmer;
mcolor[i].red = (uint8_t)fmyRed;
mcolor[i].green = (uint8_t)fmyGrn;
mcolor[i].blue = (uint8_t)fmyBlu;
}
uint8_t colorIndex = offset % scheme.count;
for (i = 0; i < Settings.light_pixels; i++) {
if (maxSize) colorIndex = ((i + offset) % (scheme.count * kWidth[Settings.light_width])) / kWidth[Settings.light_width];
c.R = mcolor[colorIndex].red;
c.G = mcolor[colorIndex].green;
c.B = mcolor[colorIndex].blue;
strip->SetPixelColor(i, c);
}
Ws2812StripShow();
}
/*********************************************************************************************\
* Public
\*********************************************************************************************/
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void Ws2812Init(void)
{
#ifdef USE_WS2812_DMA
strip = new NeoPixelBus<selectedNeoFeatureType, selectedNeoSpeedType>(WS2812_MAX_LEDS); // For Esp8266, the Pin is omitted and it uses GPIO3 due to DMA hardware use.
#else // USE_WS2812_DMA
strip = new NeoPixelBus<selectedNeoFeatureType, selectedNeoSpeedType>(WS2812_MAX_LEDS, pin[GPIO_WS2812]);
#endif // USE_WS2812_DMA
strip->Begin();
Ws2812Clear();
}
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void Ws2812Clear(void)
{
strip->ClearTo(0);
strip->Show();
ws_show_next = 1;
}
void Ws2812SetColor(uint16_t led, uint8_t red, uint8_t green, uint8_t blue, uint8_t white)
{
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor lcolor;
lcolor.W = white;
#else
RgbColor lcolor;
#endif
lcolor.R = red;
lcolor.G = green;
lcolor.B = blue;
if (led) {
strip->SetPixelColor(led -1, lcolor); // Led 1 is strip Led 0 -> substract offset 1
} else {
// strip->ClearTo(lcolor); // Set WS2812_MAX_LEDS pixels
for (uint16_t i = 0; i < Settings.light_pixels; i++) {
strip->SetPixelColor(i, lcolor);
}
}
if (!ws_suspend_update) {
strip->Show();
ws_show_next = 1;
}
}
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void Ws2812ForceSuspend (void) {
ws_suspend_update = true;
}
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void Ws2812ForceUpdate (void) {
ws_suspend_update = false;
strip->Show();
ws_show_next = 1;
}
char* Ws2812GetColor(uint16_t led, char* scolor)
{
uint8_t sl_ledcolor[4];
#if (USE_WS2812_CTYPE > NEO_3LED)
RgbwColor lcolor = strip->GetPixelColor(led -1);
sl_ledcolor[3] = lcolor.W;
#else
RgbColor lcolor = strip->GetPixelColor(led -1);
#endif
sl_ledcolor[0] = lcolor.R;
sl_ledcolor[1] = lcolor.G;
sl_ledcolor[2] = lcolor.B;
scolor[0] = '\0';
for (uint8_t i = 0; i < light_subtype; i++) {
if (Settings.flag.decimal_text) {
snprintf_P(scolor, 25, PSTR("%s%s%d"), scolor, (i > 0) ? "," : "", sl_ledcolor[i]);
} else {
snprintf_P(scolor, 25, PSTR("%s%02X"), scolor, sl_ledcolor[i]);
}
}
return scolor;
}
void Ws2812ShowScheme(uint8_t scheme)
{
switch (scheme) {
case 0: // Clock
if ((1 == state_250mS) || (ws_show_next)) {
Ws2812Clock();
ws_show_next = 0;
}
break;
default:
if (1 == Settings.light_fade) {
Ws2812Gradient(scheme -1);
} else {
Ws2812Bars(scheme -1);
}
ws_show_next = 1;
break;
}
}
#endif // USE_WS2812