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fixed battery measurement

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This commit is contained in:
Rastislav Vysoky
2026-01-23 22:41:47 +01:00
parent e7c72c5c6a
commit 266f6ee856
1 changed files with 6 additions and 7 deletions
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13
variants/rak3112/RAK3112Board.h
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@@ -13,6 +13,8 @@
#endif #endif
#define PIN_ADC_CTRL_ACTIVE LOW #define PIN_ADC_CTRL_ACTIVE LOW
#define PIN_ADC_CTRL_INACTIVE HIGH #define PIN_ADC_CTRL_INACTIVE HIGH
#define ADC_MULTIPLIER (3 * 1.73 * 1.187 * 1000)
#define BATTERY_SAMPLES 8
#include <driver/rtc_io.h> #include <driver/rtc_io.h>
@@ -77,18 +79,15 @@ public:
} }
uint16_t getBattMilliVolts() override { uint16_t getBattMilliVolts() override {
analogReadResolution(10); analogReadResolution(12);
digitalWrite(PIN_ADC_CTRL, adc_active_state);
uint32_t raw = 0; uint32_t raw = 0;
for (int i = 0; i < 8; i++) { for (int i = 0; i < BATTERY_SAMPLES; i++) {
raw += analogRead(PIN_VBAT_READ); raw += analogRead(PIN_VBAT_READ);
} }
raw = raw / 8; raw = raw / BATTERY_SAMPLES;
digitalWrite(PIN_ADC_CTRL, !adc_active_state); return (ADC_MULTIPLIER * raw) / 4096;
return (5.42 * (3.3 / 1024.0) * raw) * 1000;
} }
const char* getManufacturerName() const override { const char* getManufacturerName() const override {