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feat(wio-tracker-l1): energy optimizations

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- CPU sleep: board.sleep(0) in main loop puts NRF52 into WFE/sd_app_evt_wait
  between iterations; wakes on any interrupt (radio, BLE, timer). Largest
  power saving of the three changes.

- VBAT_ENABLE gating: voltage divider now powered only during ADC read
  (HIGH for 10ms, then LOW). Previously stayed HIGH continuously.
  Fixed in both variant.cpp (init) and WioTrackerL1Board::getBattMilliVolts().

- LED off with display: PIN_LED is cleared when auto-off triggers and
  restored (handed back to userLedHandler) when display wakes. Avoids
  idle LED current draw during screen-off periods.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-05-13 21:09:46 +02:00
co-authored by Claude Sonnet 4.6
parent e445c0a325
commit 4d46abb2c1
5 changed files with 16 additions and 6 deletions
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variants/wio-tracker-l1/WioTrackerL1Board.cpp
+2
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@@ -8,6 +8,8 @@ void WioTrackerL1Board::begin() {
btn_prev_state = HIGH;
pinMode(PIN_VBAT_READ, INPUT); // VBAT ADC input
pinMode(VBAT_ENABLE, OUTPUT);
digitalWrite(VBAT_ENABLE, LOW); // keep voltage divider off; enabled only during ADC read
// Set all button pins to INPUT_PULLUP
pinMode(PIN_BUTTON1, INPUT_PULLUP);
pinMode(PIN_BUTTON2, INPUT_PULLUP);