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//Program to 


// This #include statement was automatically added by the Particle IDE.

#include 



volatile int i=0;               // Variable to use as a counter

volatile boolean zero_cross=0;  // Boolean to store a "switch" to tell us if we have crossed zero

int AC_LOAD = D5;                // Output to Opto Triac

int dimming = 0;                    // Dimming level (0-128)  0 = on, 128 = 0ff

int dim;                      // counting up or down, 1=up, -1=down


int freqStep = 75;    // This is the delay-per-brightness step in microseconds.


IntervalTimer myTimer;


void setup()

{

  pinMode(AC_LOAD, OUTPUT);// Set AC Load pin as output

  attachInterrupt(D2, zero_crosss_int, RISING);  // Choose the zero cross interrupt # from the table above

  Particle.function("setpos", setPosition);

  Particle.variable("getpos", &dim, INT);

}


void zero_crosss_int()  // function to be fired at the zero crossing to dim the light

{

  int dimtime = (freqStep*dimming);    // For 60Hz =>65   

  delayMicroseconds(dimtime);    // Off cycle

  digitalWrite(AC_LOAD, HIGH);   // triac firing

  delayMicroseconds(10);         // triac On propagation delay (for 60Hz use 8.33)

  digitalWrite(AC_LOAD, LOW);    // triac Off

}                             


void loop()  {

  

}


int setPosition(String incValue) {

    dim = incValue.toInt();

   dimming = dim;

    return 0;

}
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