WLED/wled00/wled12_alexa.ino
2018-01-10 00:37:45 +01:00

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/*
* Alexa Voice On/Off/Brightness 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
*/
void alexaInit()
{
if (alexaEnabled && WiFi.status() == WL_CONNECTED)
{
prepareIds();
udpConnected = connectUDP();
if (udpConnected) alexaInitPages();
}
}
void handleAlexa()
{
if (alexaEnabled && WiFi.status() == WL_CONNECTED)
{
if(udpConnected){
// if theres data available, read a packet
int packetSize = UDP.parsePacket();
if(packetSize>0) {
IPAddress remote = UDP.remoteIP();
int len = UDP.read(packetBuffer, 255);
if (len > 0) {
packetBuffer[len] = 0;
}
String request = packetBuffer;
if(request.indexOf("M-SEARCH") >= 0) {
if(request.indexOf("upnp:rootdevice") > 0) {
DEBUG_PRINTLN("Responding search req...");
respondToSearch();
}
}
}
}
}
}
void alexaOn()
{
if (alexaOnMacro == 255)
{
handleSet((alexaNotify)?"win&T=1&IN":"win&T=1&NN&IN");
} else
{
applyMacro(alexaOnMacro);
}
String body = "[{\"success\":{\"/lights/1/state/on\":true}}]";
server.send(200, "text/xml", body.c_str());
DEBUG_PRINT("Sending :");
DEBUG_PRINTLN(body);
}
void alexaOff()
{
if (alexaOffMacro == 255)
{
handleSet((alexaNotify)?"win&T=0&IN":"win&T=0&NN&IN");
} else
{
applyMacro(alexaOffMacro);
}
String body = "[{\"success\":{\"/lights/1/state/on\":false}}]";
server.send(200, "application/json", body.c_str());
DEBUG_PRINT("Sending:");
DEBUG_PRINTLN(body);
}
void alexaDim(uint8_t briL)
{
String body = "[{\"success\":{\"/lights/1/state/bri\":"+ String(briL) +"}}]";
server.send(200, "application/json", body.c_str());
String ct = (alexaNotify)?"win&IN&A=":"win&NN&IN&A=";
ct = ct + (briL+1);
handleSet(ct);
}
void prepareIds() {
escapedMac = WiFi.macAddress();
escapedMac.replace(":", "");
escapedMac.toLowerCase();
}
void respondToSearch() {
DEBUG_PRINTLN("");
DEBUG_PRINT("Send resp to ");
DEBUG_PRINTLN(UDP.remoteIP());
DEBUG_PRINT("Port : ");
DEBUG_PRINTLN(UDP.remotePort());
IPAddress localIP = WiFi.localIP();
char s[16];
sprintf(s, "%d.%d.%d.%d", localIP[0], localIP[1], localIP[2], localIP[3]);
String response =
"HTTP/1.1 200 OK\r\n"
"EXT:\r\n"
"CACHE-CONTROL: max-age=100\r\n" // SSDP_INTERVAL
"LOCATION: http://"+ String(s) +":80/description.xml\r\n"
"SERVER: FreeRTOS/6.0.5, UPnP/1.0, IpBridge/1.17.0\r\n" // _modelName, _modelNumber
"hue-bridgeid: "+ escapedMac +"\r\n"
"ST: urn:schemas-upnp-org:device:basic:1\r\n" // _deviceType
"USN: uuid:2f402f80-da50-11e1-9b23-"+ escapedMac +"::upnp:rootdevice\r\n" // _uuid::_deviceType
"\r\n";
UDP.beginPacket(UDP.remoteIP(), UDP.remotePort());
#ifdef ARDUINO_ARCH_ESP32
UDP.write((uint8_t*)response.c_str(), response.length());
#else
UDP.write(response.c_str());
#endif
UDP.endPacket();
DEBUG_PRINTLN("Response sent!");
}
void alexaInitPages() {
server.on("/description.xml", HTTP_GET, [](){
DEBUG_PRINTLN(" # Responding to description.xml ... #\n");
IPAddress localIP = WiFi.localIP();
char s[16];
sprintf(s, "%d.%d.%d.%d", localIP[0], localIP[1], localIP[2], localIP[3]);
String setup_xml = "<?xml version=\"1.0\" ?>"
"<root xmlns=\"urn:schemas-upnp-org:device-1-0\">"
"<specVersion><major>1</major><minor>0</minor></specVersion>"
"<URLBase>http://"+ String(s) +":80/</URLBase>"
"<device>"
"<deviceType>urn:schemas-upnp-org:device:Basic:1</deviceType>"
"<friendlyName>Philips hue ("+ String(s) +")</friendlyName>"
"<manufacturer>Royal Philips Electronics</manufacturer>"
"<manufacturerURL>http://www.philips.com</manufacturerURL>"
"<modelDescription>Philips hue Personal Wireless Lighting</modelDescription>"
"<modelName>Philips hue bridge 2012</modelName>"
"<modelNumber>929000226503</modelNumber>"
"<modelURL>http://www.meethue.com</modelURL>"
"<serialNumber>"+ escapedMac +"</serialNumber>"
"<UDN>uuid:2f402f80-da50-11e1-9b23-"+ escapedMac +"</UDN>"
"<presentationURL>index.html</presentationURL>"
"<iconList>"
" <icon>"
" <mimetype>image/png</mimetype>"
" <height>48</height>"
" <width>48</width>"
" <depth>24</depth>"
" <url>hue_logo_0.png</url>"
" </icon>"
" <icon>"
" <mimetype>image/png</mimetype>"
" <height>120</height>"
" <width>120</width>"
" <depth>24</depth>"
" <url>hue_logo_3.png</url>"
" </icon>"
"</iconList>"
"</device>"
"</root>";
server.send(200, "text/xml", setup_xml.c_str());
DEBUG_PRINT("Sending :");
DEBUG_PRINTLN(setup_xml);
});
// openHAB support
server.on("/on.html", HTTP_GET, [](){
DEBUG_PRINTLN("on req");
server.send(200, "text/plain", "turned on");
alexaOn();
});
server.on("/off.html", HTTP_GET, [](){
DEBUG_PRINTLN("off req");
server.send(200, "text/plain", "turned off");
alexaOff();
});
server.on("/status.html", HTTP_GET, [](){
DEBUG_PRINTLN("Got status request");
String statrespone = "0";
if (bri > 0) {
statrespone = "1";
}
server.send(200, "text/plain", statrespone);
});
}
String boolString(bool st)
{
return (st)?"true":"false";
}
String briForHue(int realBri)
{
realBri--;
if (realBri < 0) realBri = 0;
return String(realBri);
}
boolean handleAlexaApiCall(String req, String body) //basic implementation of Philips hue api functions needed for basic Alexa control
{
DEBUG_PRINTLN("AlexaApiCall");
if (req.indexOf("api") <0) return false;
DEBUG_PRINTLN("ok");
if (body.indexOf("devicetype") > 0) //client wants a hue api username, we dont care and give static
{
DEBUG_PRINTLN("devType");
server.send(200, "application/json", "[{\"success\":{\"username\": \"2WLEDHardQrI3WHYTHoMcXHgEspsM8ZZRpSKtBQr\"}}]");
return true;
}
if (req.indexOf("state") > 0) //client wants to control light
{
DEBUG_PRINTLN("ls");
if (body.indexOf("bri")>0) {alexaDim(body.substring(body.indexOf("bri") +5).toInt()); return true;}
if (body.indexOf("false")>0) {alexaOff(); return true;}
alexaOn();
return true;
}
if (req.indexOf("lights/1") > 0) //client wants light info
{
DEBUG_PRINTLN("l1");
server.send(200, "application/json", "{\"manufacturername\":\"OpenSource\",\"modelid\":\"LST001\",\"name\":\""+ alexaInvocationName +"\",\"state\":{\"on\":"+ boolString(bri) +",\"hue\":0,\"bri\":"+ briForHue(bri) +",\"sat\":0,\"xy\":[0.00000,0.00000],\"ct\":500,\"alert\":\"none\",\"effect\":\"none\",\"colormode\":\"hs\",\"reachable\":true},\"swversion\":\"0.1\",\"type\":\"Extended color light\",\"uniqueid\":\"2\"}");
return true;
}
if (req.indexOf("lights") > 0) //client wants all lights
{
DEBUG_PRINTLN("lAll");
server.send(200, "application/json", "{\"1\":{\"type\":\"Extended color light\",\"manufacturername\":\"OpenSource\",\"swversion\":\"0.1\",\"name\":\""+ alexaInvocationName +"\",\"uniqueid\":\""+ WiFi.macAddress() +"-2\",\"modelid\":\"LST001\",\"state\":{\"on\":"+ boolString(bri) +",\"bri\":"+ briForHue(bri) +",\"xy\":[0.00000,0.00000],\"colormode\":\"hs\",\"effect\":\"none\",\"ct\":500,\"hue\":0,\"sat\":0,\"alert\":\"none\",\"reachable\":true}}}");
return true;
}
//we dont care about other api commands at this time and send empty JSON
server.send(200, "application/json", "{}");
return true;
}
boolean connectUDP(){
boolean state = false;
DEBUG_PRINTLN("");
DEBUG_PRINTLN("Con UDP");
#ifdef ARDUINO_ARCH_ESP32
if(UDP.beginMulticast(ipMulti, portMulti))
#else
if(UDP.beginMulticast(WiFi.localIP(), ipMulti, portMulti))
#endif
{
DEBUG_PRINTLN("Con success");
state = true;
}
else{
DEBUG_PRINTLN("Con failed");
}
return state;
}