read ID from config file

and connect to udp port 8000+ID

I_Mihalache_AudioPlayer.ino

@@ -44,6 +44,8 @@ AudioConnection          patchCord7(mixer2, rms2);
 AudioControlSGTL5000     sgtl5000_1;     //xy=573,537
 // GUItool: end automatically generated code
 
+int ID = 1 ;
+
 bool UDPalive ;
 
 Metro checkUDP = Metro(1000);
@@ -54,12 +56,13 @@ Metro sendRMS = Metro(50);
 #define PRESENCE_WAV "PRESENCE.WAV"
 #define WAIT_WAV "WAIT.WAV"
 
+
 int WAIT_TIME=10000 ;
 
 const int LDR_PIN = A7;
 ResponsiveAnalogRead ldr(LDR_PIN, false);
-int threshold = 700;
-int hysteresis = 100;
+int threshold = 0;
+int hysteresis = 10;
 int sensorPin = A7;
 SetPoint setPoint;
 
@@ -116,6 +119,13 @@ void setup() {
       delay(500);
     }
   }
+
+  File configFile = SD.open("config.txt");
+  String buf = configFile.readStringUntil('\n');
+  ID = buf.toInt();
+  Serial.print("ID : ");
+  Serial.println(ID);
+  configFile.close();  
   Serial.println("Playing LOOP and WAIT file");
   LoopPlayer.play(LOOP_WAV);
   WaitPlayer.play(WAIT_WAV);
@@ -131,18 +141,36 @@ void setup() {
   //ESP8266
   Serial1.println("AT+GMR");
   //while (!Serial1.available()) {};
-  delay(200);
+  delay(200);  
   ESPSerial();  
   Serial.println("");
   Serial.println("");
-  while(millis()<10000){}
+  int sum ;
+  int counter ;
+  while(millis()<10000){ // wait for ESP to connect to its configured wifi
+    //make a mean value of LDR readings in between
+    ldr.update();
+     sum += ldr.getValue();
+     counter++;
+     delay(50);
+    }
+    threshold = sum / counter - hysteresis/2 ;
+  Serial.print("Threshold calibrated at : ");
+  Serial.println(threshold);
+  Serial.println(hysteresis/2);
   
   Serial1.println("AT+CIFSR");
   ESPSerial();
   delay(200);
   Serial.println ("");
-  Serial1.println("AT+CIPSTART=\"UDP\",\"192.168.3.1\",8002");
+  int port = 8000 + ID;
+  Serial.print("AT+CIPSTART=\"UDP\",\"192.168.3.1\",");
+  Serial.println(port);
   ESPSerial();
+  Serial.println ("");
+  setPoint.begin(threshold, hysteresis);
+  setPoint.attach(RISING_EDGE, Presence);
+  setPoint.attach(FALLING_EDGE, Absence);
 }
 
 ///////////////////////////////////////////////////////////////////
@@ -222,12 +250,15 @@ void loop() {
     LoopPlayer.play(LOOP_WAV);
     // A brief delay for the library read WAV info
     delay(10); 
+    // also restarts WAIT file
+    WaitPlayer.play(WAIT_WAV);
+    delay(10);
   }
 
   if ( (millis() - LastPresence > WAIT_TIME) && !WaitPlayer.isPlaying() && !PresencePlayer.isPlaying()) {
-      WaitPlayer.play(WAIT_WAV);
+      
       mixer1.gain (1, 1.0);
-      Serial.println("Playing wait file");
+      Serial.println("Fading up wait file");
       delay(10);
     }
 
@@ -294,7 +325,7 @@ void Presence() {
     Serial.println("Playing presence file");
   }   
     
-    // if presence and playing, don't do anything
+    // if presence and playing, fade up to ensure
     for (float fadeRamp ; fadeRamp < 100 ; fadeRamp++ ) {
           mixer1.gain(0, fadeRamp/100) ;
         }