Release version

src/main.cpp

@@ -6,7 +6,6 @@
 void sleepUntilInterrupt();
 
 Adafruit_TLC59711 controller(1);
-#define SegmentCount 8
 
 #define PinTiltSwitch 3
 #define PinTiltSwitchMask PB3
@@ -14,7 +13,8 @@ Adafruit_TLC59711 controller(1);
 #define Timeout 2000
 
 /* For PCB layout purposes the LED segments are connected to different pins. */
-uint8_t channels[SegmentCount] = {
+#define SegmentCount 8
+const uint8_t channels[SegmentCount] = {
   0,
   1,
   2,
@@ -25,15 +25,15 @@ uint8_t channels[SegmentCount] = {
   9
 };
 
-uint16_t pwmValues[SegmentCount] = {
-  65535,
-  16384,
-  8192,
-  4096,
-  2048,
+
+#define AnimationSteps 6
+const uint16_t pwmValues[AnimationSteps] = {
   1024,
-  0,
-  0
+  2048,
+  4096,
+  8192,
+  16384,
+  65535
 };
 
 
@@ -52,8 +52,12 @@ void debugBlink(uint8_t count)
 
 
 volatile bool tiltChanged = false;
+
 uint8_t currentSegment = 0;
-uint32_t animationStart = 0;
+uint32_t animationStartTime = 0;
+bool animationStopping = false;
+
+uint8_t animationValues[SegmentCount];
 
 
 void setup()
@@ -61,10 +65,19 @@ void setup()
   pinMode(PinTiltSwitch, INPUT_PULLUP);
   //pinMode(PinDebugLED, OUTPUT);
 
-  controller.begin();
-  for (uint8_t segment = 0; segment < SegmentCount; segment++)
-    controller.setPWM(channels[segment], 0);
+  memset(animationValues, 0, sizeof(animationValues));
 
+  controller.begin();
+
+
+  for (uint8_t channel = 0; channel < 12; channel++)
+    controller.setPWM(channel, 0);
+
+  controller.write();
+
+
+  // Turn ADC off
+  ADCSRA &= ~_BV(ADEN);
 
   // Clear outstanding interrupts
   GIFR  |= _BV(PCIF);
@@ -85,67 +98,75 @@ void loop()
 {
   if (tiltChanged)
   {
-    animationStart = millis();
+    animationStartTime = millis();
+    animationStopping = false;
     tiltChanged = false;
   }
-  else if (animationStart == 0)
+
+
+  // Decrease all current values
+  bool allStopped = true;
+  for (uint8_t segment = 0; segment < SegmentCount; segment++)
   {
-    sleepUntilInterrupt();
-    return;
+    if (animationValues[segment] > 0)
+    {
+      animationValues[segment]--;
+      allStopped = false;
+    }
+  }
+
+  if (!animationStopping)
+  {
+    allStopped = false;
+    animationValues[currentSegment] = AnimationSteps;
+
+    // Check for timeout
+    if (millis() - animationStartTime >= Timeout)
+      animationStopping = true;
   }
 
 
-  if (millis() - animationStart >= Timeout)
+  // Output the current values
+  for (uint8_t segment = 0; segment < SegmentCount; segment++)
   {
-    for (uint8_t segment = 0; segment < SegmentCount; segment++)
-      controller.setPWM(channels[segment], 0);
+    uint8_t animationValue = animationValues[segment];
 
-    controller.write();
-    animationStart = 0;
-    return;
-  }
-
-
-  uint8_t segment = currentSegment;
-  for (uint8_t channel = 0; channel < SegmentCount; channel++)
-  {
-    controller.setPWM(channels[segment], pwmValues[channel]);
-
-    if (segment == 0)
-      segment = SegmentCount - 1;
+    if (animationValue > 0)
+      controller.setPWM(channels[segment], pwmValues[animationValue - 1]);
     else
-      segment--;
+      controller.setPWM(channels[segment], 0);
   }
 
   controller.write();
-  delay(75);
+
 
   currentSegment++;
   if (currentSegment == SegmentCount)
     currentSegment = 0;
+
+
+
+  // If the animation has ended, sleep
+  if (allStopped)
+  {
+    sleepUntilInterrupt();
+    return;
+  }
+  else
+    delay(75);
 }
 
 
 
 void sleepUntilInterrupt()
 {
-  // Turn ADC off
-  ADCSRA &= ~_BV(ADEN);
   set_sleep_mode(SLEEP_MODE_PWR_DOWN);
 
-  // Set sleep bit and halt the CPU
   sleep_enable();
-  sei();
-  sleep_cpu();
-
-  // ...goooood morning!
-  cli();
-
-
+  sleep_mode();
   sleep_disable();
-  ADCSRA |= _BV(ADEN);
 
-  sei();
+  tiltChanged = true;
 }