#pragma once #include #include #include #ifdef XIAO_NRF52 class XiaoNrf52Board : public NRF52BoardDCDC, public NRF52BoardOTA { public: XiaoNrf52Board() : NRF52BoardOTA("XIAO_NRF52_OTA") {} void begin(); #if defined(P_LORA_TX_LED) void onBeforeTransmit() override { digitalWrite(P_LORA_TX_LED, LOW); // turn TX LED on } void onAfterTransmit() override { digitalWrite(P_LORA_TX_LED, HIGH); // turn TX LED off } #endif uint16_t getBattMilliVolts() override { // Please read befor going further ;) // https://wiki.seeedstudio.com/XIAO_BLE#q3-what-are-the-considerations-when-using-xiao-nrf52840-sense-for-battery-charging // We can't drive VBAT_ENABLE to HIGH as long // as we don't know wether we are charging or not ... // this is a 3mA loss (4/1500) digitalWrite(VBAT_ENABLE, LOW); int adcvalue = 0; analogReadResolution(12); analogReference(AR_INTERNAL_3_0); delay(10); adcvalue = analogRead(PIN_VBAT); return (adcvalue * ADC_MULTIPLIER * AREF_VOLTAGE) / 4.096; } const char* getManufacturerName() const override { return "Seeed Xiao-nrf52"; } void powerOff() override { // set led on and wait for button release before poweroff digitalWrite(PIN_LED, LOW); #ifdef PIN_USER_BTN while(digitalRead(PIN_USER_BTN) == LOW); #endif digitalWrite(LED_GREEN, HIGH); digitalWrite(LED_BLUE, HIGH); digitalWrite(PIN_LED, HIGH); #ifdef PIN_USER_BTN // configure button press to wake up when in powered off state nrf_gpio_cfg_sense_input(digitalPinToInterrupt(g_ADigitalPinMap[PIN_USER_BTN]), NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_SENSE_LOW); #endif sd_power_system_off(); } }; #endif