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@ -1,22 +1,24 @@
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#include <TimerOne.h> // Include Timer1 library
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#include <SimpleMessageSystem.h> // Include SimpleMessageSystem library
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// This is programmed for an Arduino Mega controlling lights from outs 22+
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int AC_pin_offset = 22; // lowest out for lights
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// Pin outputs for the 18 lights
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int AC_pin_offsets[18] = {22, 24, 26, 28, 30, 23, 25, 27, 29, 32, 34, 36, 38, 31, 33, 35, 37, 39};
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int freq = 50; // 50 for EU and 60 for US
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int dims[18]; // dimmer values
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unsigned char clock_tick; // variable for Timer1
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char incomingByte;
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int val = 0;
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int light = 0;
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int delim = 0;
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void setup() {
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Serial.begin(115200);
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for(int i = 0; i < 18; i++){
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dims[i] = 256;
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// Set the pins to the triacs as outputs (using outs 0 - 17)
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pinMode(AC_pin_offset + i, OUTPUT);
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dims[i] = 215;
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pinMode(AC_pin_offsets[i], OUTPUT);
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};
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attachInterrupt(0, zero_crosss_int, RISING);
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// for resoution of 128 steps, set timer so 33 microseconds for 60 Hz or 39 for 50 Hz
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Timer1.initialize(39);
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Timer1.initialize(1000000 / (freq * 2) / 256); // 8 bit control
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Timer1.attachInterrupt(timerIsr); // attach the service routine here
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}
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@ -25,7 +27,9 @@ void timerIsr() {
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clock_tick++;
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for(int i = 0; i < 18; i++) {
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if (dims[i] == clock_tick) {
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digitalWrite(AC_pin_offset + i, HIGH); // triac on
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digitalWrite(AC_pin_offsets[i], HIGH); // triac on
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delayMicroseconds(10); // triac On propogation delay (for 60Hz use 8.33, for 50Hz use 10)
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digitalWrite(AC_pin_offsets[i], LOW); //triac off
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}
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};
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}
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@ -33,18 +37,18 @@ void timerIsr() {
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// function to be fired at the zero crossing to dim the light
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void zero_crosss_int() {
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clock_tick=0;
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for(int i = 0; i < 18; i++){
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digitalWrite(AC_pin_offset + i, LOW); // triac Off
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}
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}
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void loop(){
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int light = 0;
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int val = 0;
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// Checks to see if the message is complete and erases any previous messages
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if (messageBuild() > 0) {
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light = messageGetInt();
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val = messageGetInt();
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dims[light] = val;
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if (Serial.available() > 0) { // something came across serial
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while(1) {
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incomingByte = Serial.read();
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if(incomingByte == -1) {break;};
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if(incomingByte < 0) {val = 256 + incomingByte;} else {val = incomingByte;};
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if(val == 253) {delim = 1; continue;};
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if(val == 254) {delim = 0; continue;};
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if(delim == 0) light = val;
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if(delim == 1) dims[light] = val;
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}
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}
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}
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