countdown colors + different formats (mm:ss / ss:cc)

src/Color.cpp

@@ -1,13 +1,14 @@
 #include "Color.h"
 
 #define ___     0
+#define QQQ     64
 #define TTT     85
 #define HHH     127
 #define XXX     255
 
 // @formatter:off
 Color RED       (XXX, ___, ___);
-Color YELLOW    (HHH, HHH, ___);
+Color YELLOW    (HHH, QQQ, ___);
 Color GREEN     (___, XXX, ___);
 Color TURQUOISE (___, HHH, HHH);
 Color BLUE      (___, ___, XXX);

src/display.cpp

@@ -20,6 +20,7 @@ uint8_t CHARS[] = {
     0b11100110, // P
     0b11110110, // A
     0b10111100, // U
+    0b00000010, // -
 };
 
 int toIndex(char c) {
@@ -29,6 +30,14 @@ int toIndex(char c) {
   switch (c) {
     case 'P':
       return 10;
+    case 'A':
+      return 11;
+    case 'U':
+      return 12;
+    case 'S':
+      return 5;
+    case '-':
+      return 13;
   }
   return -1;
 }
@@ -41,17 +50,19 @@ uint8_t mapChar(char c) {
   return 0;
 }
 
-void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, bool showIfZero, Color& color) {
+void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, const Color& color) {
+  drawChar(pixels, digit, c, true, color);
+}
+
+void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, bool showIfZero, const Color& color) {
   if (c == '0' && !showIfZero) {
     return;
   }
   auto pixel = digit * SEGMENTS_PER_DIGIT * LEDS_PER_SEGMENT + (digit > DOTS_AFTER_DIGIT ? DOT_COUNT * LEDS_PER_DOT : 0);
   const auto symbol = mapChar(c);
-  Serial.printf("  character '%c'\n", c);
   uint8_t symbolMask = 128;
   for (int segment = 0; segment < SEGMENTS_PER_DIGIT; ++segment) {
     const auto on = (symbol & symbolMask) != 0;
-    Serial.printf("    segment %d = %s\n", segment, on ? "ON" : "__");
     if (on) {
       for (int led = 0; led < LEDS_PER_SEGMENT; ++led) {
         pixels.setPixelColor(pixel, color.r, color.g, color.b);
@@ -64,7 +75,7 @@ void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, bool showIfZero, Col
   }
 }
 
-void drawNumber(Adafruit_NeoPixel& pixels, int digit, int number, bool zero, Color& color) {
+void drawNumber(Adafruit_NeoPixel& pixels, int digit, int number, bool zero, const Color& color) {
   const char ten = '0' + (number / 10 % 10);
   const char one = '0' + (number % 10);
   drawChar(pixels, digit + 0, ten, zero, color);
@@ -73,13 +84,46 @@ void drawNumber(Adafruit_NeoPixel& pixels, int digit, int number, bool zero, Col
 
 void drawDot(Adafruit_NeoPixel& pixels, int dot, const Color& c) {
   int index = 2 * SEGMENTS_PER_DIGIT * LEDS_PER_SEGMENT + dot * LEDS_PER_DOT;
-  pixels.setPixelColor(index++, c.r, c.g, c.b);
+  pixels.setPixelColor(index + 0, c.r, c.g, c.b);
-  pixels.setPixelColor(index++, c.r, c.g, c.b);
+  pixels.setPixelColor(index + 1, c.r, c.g, c.b);
 }
 
-void drawDots(Adafruit_NeoPixel& pixels, Color& bottom, Color& middleBottom, Color& middleTop, Color& top) {
+void drawDots(Adafruit_NeoPixel& pixels, const Color& bottom, const Color& middleBottom, const Color& middleTop, const Color& top) {
   drawDot(pixels, 0, bottom);
   drawDot(pixels, 1, middleBottom);
   drawDot(pixels, 2, middleTop);
   drawDot(pixels, 3, top);
 }
+
+void drawMillis(Adafruit_NeoPixel& pixels, const unsigned long millisTotal, const Color& color) {
+  const auto secondsTotal = millisTotal / 1000;
+  const auto minutes = (int) secondsTotal / 60;
+  const auto seconds = (int) secondsTotal % 60;
+
+  if (minutes > 0) {
+    static auto lastSeconds = -1;
+    if (lastSeconds == seconds) {
+      return;
+    }
+    lastSeconds = seconds;
+
+    Serial.printf("%2d:%02d\n", minutes, seconds);
+
+    pixels.clear();
+    drawNumber(pixels, 0, minutes, false, color);
+    drawDots(pixels, BLACK, color, color, BLACK);
+    drawNumber(pixels, 2, seconds, true, color);
+    pixels.show();
+  } else {
+    const auto deci = (int) millisTotal / 100 % 10;
+    Serial.printf("%2d.%02d\n", seconds, deci);
+
+    pixels.clear();
+    if (seconds > 0) {
+      drawNumber(pixels, 0, seconds, false, color);
+      drawDots(pixels, color, BLACK, BLACK, BLACK);
+    }
+    drawChar(pixels, 2, '0' + deci, true, color);
+    pixels.show();
+  }
+}

src/display.h

@@ -5,10 +5,14 @@
 
 #include "Color.h"
 
-void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, bool showIfZero, Color& color);
+void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, const Color& color);
 
-void drawNumber(Adafruit_NeoPixel& pixels, int digit, int number, bool zero, Color& color);
+void drawChar(Adafruit_NeoPixel& pixels, int digit, char c, bool showIfZero, const Color& color);
 
-void drawDots(Adafruit_NeoPixel& pixels, Color& bottom, Color& middleBottom, Color& middleTop, Color& top);
+void drawNumber(Adafruit_NeoPixel& pixels, int digit, int number, bool zero, const Color& color);
+
+void drawDots(Adafruit_NeoPixel& pixels, const Color& bottom, const Color& middleBottom, const Color& middleTop, const Color& top);
+
+void drawMillis(Adafruit_NeoPixel& pixels, unsigned long millisTotal, const Color& color);
 
 #endif

src/main.cpp

@@ -16,9 +16,9 @@ void setup() {
   pixels.show();
 }
 
-long configCountdownSeconds = 65;
+long configCountdownMillis = 6 * 60 * 1000;
 
-long countdownRestMillis = configCountdownSeconds * 1000;
+long rest = configCountdownMillis;
 
 unsigned long last = 0;
 
@@ -26,32 +26,30 @@ void updateTime() {
   const auto now = max(1UL, millis());
   if (last != 0) {
     const auto diff = now - last;
-    countdownRestMillis -= (long) diff;
+    rest -= (long) diff;
-    if (countdownRestMillis < 0) {
+    if (rest < 0) {
-      countdownRestMillis = 0;
+      rest = 0;
     }
   }
   last = now;
 }
 
-void showTime() {
+bool running = true;
-  const auto secondsTotal = (unsigned long) ceil(countdownRestMillis / 1000.0);
-  const auto minutes = (int) secondsTotal / 60;
-  const auto seconds = (int) secondsTotal % 60;
 
-  static auto lastSeconds = -1;
+void showTime() {
-  if (lastSeconds == seconds) {
+  if (!running) {
     return;
   }
-  lastSeconds = seconds;
+  if (rest > 0) {
-
+    const auto color = rest >= 60000 ? WHITE : (rest >= 10000 ? YELLOW : RED);
-  Serial.printf("%2d:%02d\n", minutes, seconds);
+    drawMillis(pixels, rest, color);
-
+  } else {
-  pixels.clear();
+    running = false;
-  drawNumber(pixels, 0, minutes, false, WHITE);
+    pixels.clear();
-  drawDots(pixels, BLACK, WHITE, WHITE, BLACK);
+    drawNumber(pixels, 3, 0, true, RED);
-  drawNumber(pixels, 2, seconds, true, WHITE);
+    pixels.show();
-  pixels.show();
+    Serial.println("END");
+  }
 }
 
 void loop() {