first commit

DIMMER_TEST_2/DIMMER_TEST_2.ino

@@ -0,0 +1,77 @@
+#include "hw_timer.h"          
+const byte zcPin = 12;
+const byte pwmPin = 13;  
+
+byte fade = 1;
+byte state = 1;
+byte tarBrightness = 255;
+byte curBrightness = 0;
+byte zcState = 0; // 0 = ready; 1 = processing;
+void setup() {
+  Serial.begin(115200);   
+  pinMode(zcPin, INPUT_PULLUP);
+  pinMode(pwmPin, OUTPUT);
+  attachInterrupt(zcPin, zcDetectISR, RISING);    // Attach an Interupt to Pin 2 (interupt 0) for Zero Cross Detection
+  hw_timer_init(NMI_SOURCE, 0);
+  hw_timer_set_func(dimTimerISR);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+    if (Serial.available()){
+        int val = Serial.parseInt();
+        if (val>0){
+          tarBrightness =val;
+          Serial.println(tarBrightness);
+        }
+        
+    }
+}
+
+
+void dimTimerISR() {
+    if (fade == 1) {
+      if (curBrightness > tarBrightness || (state == 0 && curBrightness > 0)) {
+        --curBrightness;
+      }
+      else if (curBrightness < tarBrightness && state == 1 && curBrightness < 255) {
+        ++curBrightness;
+      }
+    }
+    else {
+      if (state == 1) {
+        curBrightness = tarBrightness;
+      }
+      else {
+        curBrightness = 0;
+      }
+    }
+    
+    if (curBrightness == 0) {
+      state = 0;
+      digitalWrite(pwmPin, 0);
+    }
+    else if (curBrightness == 255) {
+      state = 1;
+      digitalWrite(pwmPin, 1);
+    }
+    else {
+      digitalWrite(pwmPin, 1);
+    }
+    
+    zcState = 0;
+}
+
+void zcDetectISR() {
+  if (zcState == 0) {
+    zcState = 1;
+  
+    if (curBrightness < 255 && curBrightness > 0) {
+      digitalWrite(pwmPin, 0);
+      
+      int dimDelay = 30 * (255 - curBrightness) + 400;//400
+      hw_timer_arm(dimDelay);
+    }
+  }
+}
+