WLED/wled00/alexa.cpp

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#include "wled.h"
/*
* Alexa Voice On/Off/Brightness/Color Control. Emulates a Philips Hue bridge to Alexa.
*
* This was put together from these two excellent projects:
* https://github.com/kakopappa/arduino-esp8266-alexa-wemo-switch
* https://github.com/probonopd/ESP8266HueEmulator
*/
#include "src/dependencies/espalexa/EspalexaDevice.h"
#ifndef WLED_DISABLE_ALEXA
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void onAlexaChange(EspalexaDevice* dev);
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void alexaInit()
{
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if (alexaEnabled && WLED_CONNECTED)
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{
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if (espalexaDevice == nullptr) //only init once
{
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espalexaDevice = new EspalexaDevice(alexaInvocationName, onAlexaChange, EspalexaDeviceType::extendedcolor);
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espalexa.addDevice(espalexaDevice);
espalexa.begin(&server);
} else {
espalexaDevice->setName(alexaInvocationName);
}
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}
}
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void handleAlexa()
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{
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if (!alexaEnabled || !WLED_CONNECTED) return;
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espalexa.loop();
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}
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void onAlexaChange(EspalexaDevice* dev)
{
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EspalexaDeviceProperty m = espalexaDevice->getLastChangedProperty();
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if (m == EspalexaDeviceProperty::on)
{
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if (!macroAlexaOn)
{
if (bri == 0)
{
bri = briLast;
stateUpdated(CALL_MODE_ALEXA);
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}
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} else {
applyPreset(macroAlexaOn, CALL_MODE_ALEXA);
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if (bri == 0) espalexaDevice->setValue(briLast); //stop Alexa from complaining if macroAlexaOn does not actually turn on
}
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} else if (m == EspalexaDeviceProperty::off)
{
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if (!macroAlexaOff)
{
if (bri > 0)
{
briLast = bri;
bri = 0;
stateUpdated(CALL_MODE_ALEXA);
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}
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} else {
applyPreset(macroAlexaOff, CALL_MODE_ALEXA);
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if (bri != 0) espalexaDevice->setValue(0); //stop Alexa from complaining if macroAlexaOff does not actually turn off
}
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} else if (m == EspalexaDeviceProperty::bri)
{
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bri = espalexaDevice->getValue();
stateUpdated(CALL_MODE_ALEXA);
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} else //color
{
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if (espalexaDevice->getColorMode() == EspalexaColorMode::ct) //shade of white
{
uint16_t ct = espalexaDevice->getCt();
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if (!ct) return;
uint16_t k = 1000000 / ct; //mireds to kelvin
if (strip.hasCCTBus()) {
uint8_t segid = strip.getMainSegmentId();
WS2812FX::Segment& seg = strip.getSegment(segid);
seg.setCCT(k, segid);
col[0]= 0; col[1]= 0; col[2]= 0; col[3]= 255;
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} else if (strip.hasWhiteChannel()) {
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switch (ct) { //these values empirically look good on RGBW
case 199: col[0]=255; col[1]=255; col[2]=255; col[3]=255; break;
case 234: col[0]=127; col[1]=127; col[2]=127; col[3]=255; break;
case 284: col[0]= 0; col[1]= 0; col[2]= 0; col[3]=255; break;
case 350: col[0]=130; col[1]= 90; col[2]= 0; col[3]=255; break;
case 383: col[0]=255; col[1]=153; col[2]= 0; col[3]=255; break;
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default : colorKtoRGB(k, col);
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}
} else {
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colorKtoRGB(k, col);
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}
} else {
uint32_t color = espalexaDevice->getRGB();
col[0] = ((color >> 16) & 0xFF);
col[1] = ((color >> 8) & 0xFF);
col[2] = ( color & 0xFF);
col[3] = 0;
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}
colorUpdated(CALL_MODE_ALEXA);
}
}
#else
void alexaInit(){}
void handleAlexa(){}
#endif