*/
#include <DMXSerial.h> //
https://github.com/mathertel/DMXSerial/blob/master/src/DMXSerial.h#include <TimerOne.h> //
http://www.arduino.cc/playground/Code/Timer1#define PINS 4
volatile int pinCount[PINS]; // make volatile to make available in interrupt
volatile boolean zero_cross=0; // Boolean to store a "switch" to tell us if we have crossed zero
int AC_pins[] = {3,4,5,6}; // Stup the pin numbers
int AC_dim[PINS]; // Holds Dimming levels (0-128) 0 = on, 128 = 0ff
int freqStep = 65; // Set the delay for the frequency of power (65 for 60Hz, 78 for 50Hz) per step (using 128 steps)
// freqStep may need some adjustment depending on your power the formula
// you need to us is (500000/AC_freq)/NumSteps = freqStep
void setup() {
DMXSerial.init(DMXReceiver); // Setup external mode signal, Hardware & Enable receiver and Receive interrupt
for(int a=0; a < PINS; a++) { //set the pins to output
pinMode(AC_pins[a],OUTPUT);
pinCount[a] = 0; // keeps track of the time in the cycle
AC_dim[a] = 0; // dimming level set to zero
}
attachInterrupt(0, zero_cross_detect, FALLING); // Attach Interrupt to Pin 2 (interrupt 0) for Zero Cross Detection
Serial.begin(9600);
Timer1.initialize(freqStep); // Initialize TimerOne library for the freq we need
Timer1.attachInterrupt(dim_check, freqStep); // Use the TimerOne Library to attach an interrupt
// to the function we use to check to see if it is
// the right time to fire the triac. This function
// will now run every freqStep in microseconds.
}
void zero_cross_detect() { // function to be fired at the zero crossing
zero_cross = 1; // set flag to tell dimming function zero cross has occured
} // End zero_cross_detect
void dim_check() { // Function will fire the triac at the proper time
if(zero_cross == 1) { // First check to make sure the zero-cross has happened else do nothing
for(int a=0; a < PINS; a++) {
if(pinCount[a] >= AC_dim[a]) { // Check and see if i has reached the dimming value we want
digitalWrite(AC_pins[a], HIGH); // Fire the Triac
delayMicroseconds(5); // Pause briefly to ensure the triac turned on
digitalWrite(AC_pins[a], LOW); // Turn off the Triac gate (Triac will turn off at the next zero cross)
pinCount[a] = 0; // Reset the accumulator
zero_cross = 0; // Reset the zero_cross so it may be turned on again at the next zero_cross_detect
} else {
pinCount[a]++; // If the dimming value has not been reached, incriment the counter
}
}
}
}
void loop() {
// Calculate how long no data backet was received
unsigned long lastPacket = DMXSerial.noDataSince();
if (lastPacket < 5000) {
// read recent DMX values and set dimmer levels
analogWrite(AC_pins[a],, DMXSerial.read[a]);
// *This is simply making all outputs cycle through bright-dark, out of time with each other.
for(int i=0; i<127; i ++) {
for(int a=0; a < PINS; a++) {
int ii = i+42; //this is the bit that puts the blinking lights out of sync with one another
if(ii > 127) ii -= 127;
AC_dim[a] = ii;
}
delay(50);
}*//
}