paul/arduino-clock
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added blinking dots

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paul
2026-01-18 18:49:52 -05:00
parent 8f8dc2e0fa
commit 849d6a46bf
1 changed files with 187 additions and 175 deletions
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30
arduino_clock.ino
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@@ -87,6 +87,8 @@ void setup() {
// ---------------------------
// LOOP
// ---------------------------
static bool colonOn = true;
void loop() {
static unsigned long lastUpdate = 0;
static char lastTime[16] = "";
@@ -95,6 +97,7 @@ void loop() {
lastUpdate = millis();
DateTime now = rtc.now();
colonOn = !colonOn;
// Convert to 12-hour format
int hour12 = now.hour();
@@ -118,6 +121,24 @@ void loop() {
Paint_DrawString_EN(15, 160, weekdaybuf, &Font24, BLACK, WHITE);
Paint_DrawString_EN(15, 200, datebuf, &Font24, BLACK, WHITE);
int colonX = 10 + 2*(DIGIT_SIZE + 35);
int colonTopY = 50;
int colonBottomY = 100;
int colonW = 10;
int colonH = 10;
uint16_t colonColor = colonOn ? WHITE : BLACK;
// Top dot
Paint_DrawRectangle(colonX, colonTopY,
colonX + colonW, colonTopY + colonH,
colonColor, DOT_PIXEL_1X1, DRAW_FILL_FULL);
// Bottom dot
Paint_DrawRectangle(colonX, colonBottomY,
colonX + colonW, colonBottomY + colonH,
colonColor, DOT_PIXEL_1X1, DRAW_FILL_FULL);
// Only update digits that changed
if (strcmp(timebuf, lastTime) != 0) {
@@ -148,15 +169,6 @@ void loop() {
drawDigit(10 + size + 30, 20, size, h2, WHITE);
}
// COLON (always drawn)
Paint_DrawRectangle(10 + 2*(size + 35), 50,
10 + 2*(size + 35) + 10, 60,
WHITE, DOT_PIXEL_1X1, DRAW_FILL_FULL);
Paint_DrawRectangle(10 + 2*(size + 35), 100,
10 + 2*(size + 35) + 10, 110,
WHITE, DOT_PIXEL_1X1, DRAW_FILL_FULL);
// MIN tens
if (lastTime[3] != timebuf[3]) {
drawDigit(10 + 2*(size + 30) + 30, 20, size, lastTime[3] - '0', BLACK);