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@@ -18,7 +18,8 @@
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// built-ins
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#define PIN_VBAT_READ 4
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-#define ADC_MULTIPLIER (3 * 1.73 * 1.187 * 1000)
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+#define PIN_BAT_CTL 6
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+#define MV_LSB (3000.0F / 4096.0F) // 12-bit ADC with 3.0V input range
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class T114Board : public mesh::MainBoard {
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protected:
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@@ -37,17 +38,18 @@ public:
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}
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#endif
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- #define BATTERY_SAMPLES 8
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-
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uint16_t getBattMilliVolts() override {
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+ int adcvalue = 0;
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analogReadResolution(12);
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- uint32_t raw = 0;
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- for (int i = 0; i < BATTERY_SAMPLES; i++) {
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- raw += analogRead(PIN_VBAT_READ);
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- }
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- raw = raw / BATTERY_SAMPLES;
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+ analogReference(AR_INTERNAL_3_0);
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+ pinMode(PIN_BAT_CTL, OUTPUT); // battery adc can be read only ctrl pin 6 set to high
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+ digitalWrite(PIN_BAT_CTL, 1);
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+
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+ delay(10);
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+ adcvalue = analogRead(PIN_VBAT_READ);
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+ digitalWrite(6, 0);
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- return (ADC_MULTIPLIER * raw) / 4096;
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+ return (uint16_t)((float)adcvalue * MV_LSB * 4.9);
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}
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const char* getManufacturerName() const override {
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ripplebiz