Public Access
Power-cycle-friendly Nano boot and ESP relay handling
Nano / driver: - No full on/off flip at boot; the first display() after boot is a forced full redraw instead, since the physical dot state is unknown - Send READY when booted ESP32: - relayOn() only switches and waits when the relay was off, and waits for the Nano's READY (3 s timeout) instead of a fixed 3 s on every frame - relayOff() ends Serial and releases the TX pin so the idle-high line no longer back-powers the Nano through its RX pin - No display commands are sent while the relay is off - Switching the relay on cancels a pending power-off countdown Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mangavalkandClaude Opus 5.5 committed
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@@ -5,6 +5,60 @@ void toggleLED(void *parameter);
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uint32_t power_off_delay;
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int triggered_power_off = false;
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int turn_hassio_power_off = false;
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// Wait until the Nano reports READY after booting, or until NANO_BOOT_TIMEOUT
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void waitForNano()
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{
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char line[16];
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uint8_t len = 0;
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uint32_t start = millis();
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while (millis() - start < NANO_BOOT_TIMEOUT)
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{
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while (Serial.available())
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{
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char c = Serial.read();
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if (c == '\n')
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{
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line[len] = '\0';
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if (strstr(line, "READY"))
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return;
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len = 0;
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}
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else if (len < sizeof(line) - 1)
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line[len++] = c;
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}
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delay(10);
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}
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}
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void relayOn()
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{
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// cancel a pending power off countdown
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triggered_power_off = false;
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if (relay_on)
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return;
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Serial.begin(115200);
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// drop old data (e.g. ERR replies) so only a new READY counts
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while (Serial.available())
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Serial.read();
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digitalWrite(relay, LOW);
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waitForNano();
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relay_on = true;
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}
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void relayOff()
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{
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digitalWrite(relay, HIGH);
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relay_on = false;
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// An idle UART TX line is high and would power the Nano through its RX pin
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Serial.flush();
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Serial.end();
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pinMode(nano_tx, INPUT);
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}
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void turnPowerOff(uint32_t delay = 30000, bool _turn_hassio_power_off = false)
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{
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if(triggered_power_off == false)
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@@ -25,7 +79,7 @@ void updatePower()
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triggered_power_off = false;
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// OFF
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digitalWrite(relay, HIGH);
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relayOff();
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if(turn_hassio_power_off)
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{
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@@ -46,10 +100,13 @@ void onPowerSwitchStateChanged(bool state, HASwitch *s)
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if(power == false)
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{
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display.fillScreen(0);
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display.display();
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if (relay_on)
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{
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display.fillScreen(0);
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display.display();
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delay(1000);
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delay(1000);
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}
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turnPowerOff(0);
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@@ -230,9 +287,7 @@ void setup()
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otaPanicMode = false;
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pinMode(relay, OUTPUT);
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digitalWrite(relay, LOW);
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delay(4000);
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relayOn();
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display.begin(&Serial);
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// display.setTiming(200);
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@@ -379,11 +434,7 @@ void drawRotatedBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, i
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void turnPowerOn(bool overide = false)
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{
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if(power == true || overide == true)
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{
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// ON
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digitalWrite(relay, LOW);
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delay(3000);
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}
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relayOn();
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}
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void loop()
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@@ -434,8 +485,11 @@ void loop()
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if(hour <= 7 || (hour >= 23 && minute > 30))
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{
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display.fillScreen(0);
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display.display();
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if (relay_on)
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{
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display.fillScreen(0);
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display.display();
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}
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turnPowerOff();
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}
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@@ -446,28 +500,32 @@ void loop()
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{
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turnPowerOn();
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int xoffset = 3;
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// power can be off (Home Assistant power switch): then nothing is sent
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if (relay_on)
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{
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int xoffset = 3;
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display.fillScreen(0);
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// display.setTextSize(2);
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display.setTextSize(1);
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// display.setCursor(7, 3);
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display.setCursor(xoffset + 0, 19 - 2);
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display.setTextWrap(false);
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// display.print(t);
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display.fillScreen(0);
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// display.setTextSize(2);
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display.setTextSize(1);
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// display.setCursor(7, 3);
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display.setCursor(xoffset + 0, 19 - 2);
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display.setTextWrap(false);
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// display.print(t);
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// if(minute % 2 == 0)
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if(hour >= 17 || hour <= 6)
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display.drawBitmap(xoffset + 0, 0, yawning_pikachu_bitmap_yawning_pikachu_black_border, 35, 19, 1);
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else
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display.drawBitmap(xoffset + 0, 0, pikachu_bitmap_pikachu_black_border, 35, 19, 1);
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// if(minute % 2 == 0)
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if(hour >= 17 || hour <= 6)
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display.drawBitmap(xoffset + 0, 0, yawning_pikachu_bitmap_yawning_pikachu_black_border, 35, 19, 1);
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else
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display.drawBitmap(xoffset + 0, 0, pikachu_bitmap_pikachu_black_border, 35, 19, 1);
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display.drawBitmap(xoffset + 35, 0, clock_thought_bubble_bitmap_clock_thought_bubble, 46, 19, 1);
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display.drawBitmap(xoffset + 35, 0, clock_thought_bubble_bitmap_clock_thought_bubble, 46, 19, 1);
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display.setCursor(xoffset + 43, (19/2) - 5);
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display.print(timeStringBuff);
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display.setCursor(xoffset + 43, (19/2) - 5);
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display.print(timeStringBuff);
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display.display();
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display.display();
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}
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}
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else
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{
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@@ -476,34 +534,37 @@ void loop()
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}
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else
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{
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display.fillScreen(0);
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display.drawBitmap(0, 0, nintendo_bitmap_Nintendo_new, 84, 19, 1);
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if (relay_on)
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{
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display.fillScreen(0);
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display.drawBitmap(0, 0, nintendo_bitmap_Nintendo_new, 84, 19, 1);
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// display.drawBitmap(0, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*2, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*3, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*4, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(0, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*2, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*3, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// display.drawBitmap(18*4, 0, nintendo_bitmap_panda_inverted, 17, 18, 1);
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// drawRotatedBitmap(0, 0, nintendo_bitmap_Nintendo_new, 17, 18, 1, 90);
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// drawRotatedBitmap(0, 0, nintendo_bitmap_Nintendo_new, 17, 18, 1, 90);
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// Text inside border.
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// display.drawBitmap(0, 0, nintendo_bitmap_nintendo_border, 84, 19, 1);
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// display.setFont();
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// display.setTextSize(1);
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// display.setTextWrap(false);
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// display.setCursor(5, 4);
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// display.print("Nintendo");
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// Text inside border.
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// display.drawBitmap(0, 0, nintendo_bitmap_nintendo_border, 84, 19, 1);
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// display.setFont();
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// display.setTextSize(1);
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// display.setTextWrap(false);
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// display.setCursor(5, 4);
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// display.print("Nintendo");
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// display.setFont();
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// // display.setTextSize(2);
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// display.setTextSize(1);
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// display.setCursor(0, 0);
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// display.setTextWrap(true);
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// // display.print(t);
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// display.print("Carla & Jan Kragt");
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// display.setFont();
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// // display.setTextSize(2);
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// display.setTextSize(1);
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// display.setCursor(0, 0);
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// display.setTextWrap(true);
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// // display.print(t);
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// display.print("Carla & Jan Kragt");
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display.display();
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display.display();
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}
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turnPowerOff();
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}
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