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Read battery voltage on Minewsemi ME25LS01

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This commit is contained in:
Normunds Gavars 2025-07-04 19:27:11 +03:00
parent 70a9990f45
commit aa3c702ffd
5 changed files with 22 additions and 73 deletions
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50
src/helpers/nrf52/MinewsemiME25LS01Board.h
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@ -16,9 +16,9 @@
#define LR11X0_DIO_AS_RF_SWITCH true
#define LR11X0_DIO3_TCXO_VOLTAGE 1.6
// built-ins
//#define PIN_VBAT_READ 5
//#define ADC_MULTIPLIER (3 * 1.73 * 1000)
#define PIN_VBAT_READ BATTERY_PIN
#define ADC_MULTIPLIER (1.815f) // dependent on voltage divider resistors. TODO: more accurate battery tracking
class MinewsemiME25LS01Board : public mesh::MainBoard {
protected:
@ -28,43 +28,23 @@ protected:
public:
void begin();
#define BATTERY_SAMPLES 8
uint16_t getBattMilliVolts() override {
#ifdef BATTERY_PIN
#ifdef PIN_3V3_EN
digitalWrite(PIN_3V3_EN, HIGH);
#endif
analogReference(AR_INTERNAL_3_0);
analogReadResolution(12);
delay(10);
float volts = (analogRead(BATTERY_PIN) * ADC_MULTIPLIER * AREF_VOLTAGE) / 4096;
#ifdef PIN_3V3_EN
digitalWrite(PIN_3V3_EN, LOW);
#endif
analogReference(AR_DEFAULT); // put back to default
analogReadResolution(10);
return volts * 1000;
#else
return 0;
#endif
uint32_t raw = 0;
for (int i = 0; i < BATTERY_SAMPLES; i++) {
raw += analogRead(PIN_VBAT_READ);
}
raw = raw / BATTERY_SAMPLES;
return (ADC_MULTIPLIER * raw);
}
uint8_t getStartupReason() const override { return startup_reason; }
const char* getManufacturerName() const override {
return "m25ls01";
}
int buttonStateChanged() {
#ifdef BUTTON_PIN
uint8_t v = digitalRead(BUTTON_PIN);
if (v != btn_prev_state) {
btn_prev_state = v;
return (v == LOW) ? 1 : -1;
}
#endif
return 0;
return "Minewsemi";
}
void powerOff() override {
@ -81,10 +61,6 @@ public:
digitalWrite(BUZZER_EN, LOW);
#endif
#ifdef PIN_3V3_EN
digitalWrite(PIN_3V3_EN, LOW);
#endif
#ifdef LED_PIN
digitalWrite(LED_PIN, LOW);
#endif
@ -108,5 +84,5 @@ public:
NVIC_SystemReset();
}
// bool startOTAUpdate(const char* id, char reply[]) override;
bool startOTAUpdate(const char* id, char reply[]) override;
};