This commit is contained in:
jpirnay
2026-03-22 13:18:02 +01:00
3 changed files with 80 additions and 48 deletions
+13
View File
@@ -58,7 +58,20 @@ void HalPowerManager::startDeepSleep(HalGPIO& gpio) const {
delay(50);
gpio.update();
}
// Pre-sleep routines from the original firmware
// GPIO13 is connected to battery latch MOSFET, we need to make sure it's low during sleep
// Note that this means the MCU will be completely powered off during sleep, including RTC
constexpr gpio_num_t GPIO_SPIWP = GPIO_NUM_13;
gpio_set_direction(GPIO_SPIWP, GPIO_MODE_OUTPUT);
gpio_set_level(GPIO_SPIWP, 0);
esp_sleep_config_gpio_isolate();
gpio_deep_sleep_hold_en();
gpio_hold_en(GPIO_SPIWP);
pinMode(InputManager::POWER_BUTTON_PIN, INPUT_PULLUP);
// Arm the wakeup trigger *after* the button is released
// Note: this is only useful for waking up on USB power. On battery, the MCU will be completely powered off, so the
// power button is hard-wired to briefly provide power to the MCU, waking it up regardless of the wakeup source
// configuration
esp_deep_sleep_enable_gpio_wakeup(1ULL << InputManager::POWER_BUTTON_PIN, ESP_GPIO_WAKEUP_GPIO_LOW);
// Enter Deep Sleep
esp_deep_sleep_start();