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xiao-nrf keep vbat_en to low to prevent issues ...

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Florent
2025-04-20 16:32:46 +02:00
parent 7b1582a0b9
commit 6735960a4e
2 changed files with 21 additions and 17 deletions
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24
src/helpers/nrf52/XiaoNrf52Board.h
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@@ -49,20 +49,16 @@ public:
// Please read befor going further ;)
// https://wiki.seeedstudio.com/XIAO_BLE#q3-what-are-the-considerations-when-using-xiao-nrf52840-sense-for-battery-charging
pinMode(BAT_NOT_CHARGING, INPUT);
if (digitalRead(BAT_NOT_CHARGING) == HIGH) {
int adcvalue = 0;
analogReadResolution(12);
analogReference(AR_INTERNAL_3_0);
digitalWrite(VBAT_ENABLE, LOW);
delay(10);
adcvalue = analogRead(PIN_VBAT);
digitalWrite(VBAT_ENABLE, HIGH);
return (adcvalue * ADC_MULTIPLIER * AREF_VOLTAGE) / 4.096;
} else {
digitalWrite(VBAT_ENABLE, HIGH); // ensures high !
return 4200; // charging value
}
// 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 {