78 lines
1.6 KiB
C++
78 lines
1.6 KiB
C++
#include "hw_timer.h"
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const byte zcPin = 12;
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const byte pwmPin = 13;
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byte fade = 1;
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byte state = 1;
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byte tarBrightness = 255;
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byte curBrightness = 0;
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byte zcState = 0; // 0 = ready; 1 = processing;
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void setup() {
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Serial.begin(115200);
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pinMode(zcPin, INPUT_PULLUP);
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pinMode(pwmPin, OUTPUT);
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attachInterrupt(zcPin, zcDetectISR, RISING); // Attach an Interupt to Pin 2 (interupt 0) for Zero Cross Detection
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hw_timer_init(NMI_SOURCE, 0);
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hw_timer_set_func(dimTimerISR);
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}
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void loop() {
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// put your main code here, to run repeatedly:
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if (Serial.available()){
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int val = Serial.parseInt();
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if (val>0){
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tarBrightness =val;
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Serial.println(tarBrightness);
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}
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}
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}
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void dimTimerISR() {
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if (fade == 1) {
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if (curBrightness > tarBrightness || (state == 0 && curBrightness > 0)) {
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--curBrightness;
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}
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else if (curBrightness < tarBrightness && state == 1 && curBrightness < 255) {
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++curBrightness;
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}
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}
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else {
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if (state == 1) {
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curBrightness = tarBrightness;
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}
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else {
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curBrightness = 0;
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}
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}
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if (curBrightness == 0) {
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state = 0;
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digitalWrite(pwmPin, 0);
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}
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else if (curBrightness == 255) {
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state = 1;
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digitalWrite(pwmPin, 1);
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}
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else {
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digitalWrite(pwmPin, 1);
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}
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zcState = 0;
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}
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void zcDetectISR() {
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if (zcState == 0) {
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zcState = 1;
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if (curBrightness < 255 && curBrightness > 0) {
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digitalWrite(pwmPin, 0);
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int dimDelay = 30 * (255 - curBrightness) + 400;//400
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hw_timer_arm(dimDelay);
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}
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}
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}
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