Method isUsbConnected

lib/hal/HalGPIO.cpp:272–287

}

bool HalGPIO::isUsbConnected() const {
  if (deviceIsX3()) {
    // X3: infer USB/charging via BQ27220 Current() register (0x0C, signed mA).
    // Positive current means charging.
    for (uint8_t attempt = 0; attempt < 2; ++attempt) {
      int16_t currentMa = 0;
      if (X3GPIO::readBQ27220CurrentMA(&currentMa)) {
        return currentMa > 0;
      }
      delay(2);
    }
    return false;
  }
  // U0RXD/GPIO20 reads HIGH when USB is connected
  return digitalRead(UART0_RXD) == HIGH;
}

HalGPIO::WakeupReason HalGPIO::getWakeupReason() const {
  const auto wakeupCause = esp_sleep_get_wakeup_cause();