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[EInkDisplay] Fix incorrect power off sequence when calling deepSleep() (#6)

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Dave Allie 2025-12-15 22:24:58 +11:00 committed by GitHub
parent 7e0dce9167
commit 4d0dcd5ff8
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1 changed files with 20 additions and 1 deletions
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21
libs/display/EInkDisplay/src/EInkDisplay.cpp
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@ -521,7 +521,26 @@ void EInkDisplay::setCustomLUT(bool enabled, const unsigned char* lutData) {
}
void EInkDisplay::deepSleep() {
// Enter deep sleep mode
Serial.printf("[%lu] Preparing display for deep sleep...\n", millis());
// First, power down the display properly
// This shuts down the analog power rails and clock
if (isScreenOn) {
sendCommand(CMD_DISPLAY_UPDATE_CTRL1);
sendData(CTRL1_BYPASS_RED); // Normal mode
sendCommand(CMD_DISPLAY_UPDATE_CTRL2);
sendData(0x03); // Set ANALOG_OFF_PHASE (bit 1) and CLOCK_OFF (bit 0)
sendCommand(CMD_MASTER_ACTIVATION);
// Wait for the power-down sequence to complete
waitWhileBusy(" display power-down");
isScreenOn = false;
}
// Now enter deep sleep mode
Serial.printf("[%lu] Entering deep sleep mode...\n", millis());
sendCommand(CMD_DEEP_SLEEP);
sendData(0x01); // Enter deep sleep