// TEST BLUETOOTH MODULE CONNECTION 
#include <SoftwareSerial.h>
SoftwareSerial hc06(2,3);
String cmd="";
float sensor_val=0;
void setup(){
 //Initialize Serial Monitor
 Serial.begin(9600);
 //Initialize Bluetooth Serial Port
 hc06.begin(9600);
}
void loop(){
 //Read data from HC06
 while(hc06.available()>0){
   cmd+=(char)hc06.read();
 }
 //Select function with cmd
 if(cmd!=""){
   Serial.print("Command recieved : ");
   Serial.println(cmd);
   // We expect ON or OFF from bluetooth
   if(cmd=="ON"){
       Serial.println("Function is on");
   }else if(cmd=="OFF"){
       Serial.println("Function is off");
   }else{
       Serial.println("Function is off by default");
   }
   cmd=""; //reset cmd
 }
 // Simulate sensor measurement
 sensor_val=(float)random(256); // random number between 0 and 255
   
 //Write sensor data to HC06
 hc06.print(sensor_val);
 delay(100);
}