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Add Heltec V4 set adc.multiplier functionality #2335

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Merged
liamcottle merged 1 commit into from
Apr 21, 2026
Merged

Add Heltec V4 set adc.multiplier functionality #2335

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2 changes: 1 addition & 1 deletion variants/heltec_v4/HeltecV4Board.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,7 @@ void HeltecV4Board::begin() {

digitalWrite(PIN_ADC_CTRL, LOW);

return (5.42 * (3.3 / 1024.0) * raw) * 1000;
return (adc_mult * (3.3 / 1024.0) * raw) * 1000;
}

const char* HeltecV4Board::getManufacturerName() const {
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20 changes: 18 additions & 2 deletions variants/heltec_v4/HeltecV4Board.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,16 @@
#include <helpers/ESP32Board.h>
#include <driver/rtc_io.h>
#include "LoRaFEMControl.h"

#ifndef ADC_MULTIPLIER
#define ADC_MULTIPLIER 5.42
#endif

class HeltecV4Board : public ESP32Board {

protected:
float adc_mult = ADC_MULTIPLIER;

public:
RefCountedDigitalPin periph_power;
LoRaFEMControl loRaFEMControl;
Expand All @@ -18,6 +26,14 @@ class HeltecV4Board : public ESP32Board {
void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
void powerOff() override;
uint16_t getBattMilliVolts() override;
const char* getManufacturerName() const override ;

bool setAdcMultiplier(float multiplier) override {
if (multiplier == 0.0f) {
adc_mult = ADC_MULTIPLIER;
} else {
adc_mult = multiplier;
}
return true;
}
float getAdcMultiplier() const override { return adc_mult; }
const char* getManufacturerName() const override;
};
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