ACS712 on light dimmers

Hi

I have duplicate this light dimmer circuit and I want to read the current after the triac using ACS712. Anyone know how should i write the code?

My dimming code goes like this.

unsigned char AC_LOAD = 7; // Output to Opto Triac pin
unsigned char dimming = 3; // Dimming level (0-100)
unsigned char i;

void setup() {
// put your setup code here, to run once:
pinMode(AC_LOAD, OUTPUT);// Set AC Load pin as output
attachInterrupt(1, zero_crosss_int, RISING);

// Serial.begin(9600);

}

void zero_crosss_int() // function to be fired at the zero crossing to dim the light
{
// Firing angle calculation : 1 full 50Hz wave =1/50=20ms
// Every zerocrossing : (50Hz)-> 10ms (1/2 Cycle) For 60Hz (1/2 Cycle) => 8.33ms
// 10ms=10000us

int dimtime = (100*dimming); // For 60Hz =>65
delayMicroseconds(dimtime); // Off cycle
digitalWrite(AC_LOAD, HIGH); // triac firing
delayMicroseconds(10); // triac On propogation delay (for 60Hz use 8.33)
digitalWrite(AC_LOAD, LOW); // triac Off
}

void loop() {

// Serial.println(pulseIn(8, HIGH));

for (i=5;i<85;i++)
{
dimming=i;
delay(20);
}

for (i=85;i>5;i–)
{
dimming=i;
delay(20);
}

}