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tweak getBattMilliVolts to report battery more accurately

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This commit is contained in:
Tomas P
2025-11-07 09:48:57 +01:00
committed by GitHub
parent c0a51aff66
commit 429f82106b
1 changed files with 14 additions and 7 deletions
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17
variants/thinknode_m2/ThinknodeM2Board.cpp
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@@ -19,13 +19,20 @@ void ThinknodeM2Board::begin() {
enterDeepSleep(0); enterDeepSleep(0);
} }
uint16_t ThinknodeM2Board::getBattMilliVolts() { uint16_t ThinknodeM2Board::getBattMilliVolts() {
analogReadResolution(12); analogReadResolution(12);
delay(10); analogSetPinAttenuation(PIN_VBAT_READ, ADC_11db);
float volts = (analogRead(PIN_VBAT_READ) * ADC_MULTIPLIER * AREF_VOLTAGE) / 4096;
uint32_t mv = 0;
for (int i = 0; i < 8; ++i) {
mv += analogReadMilliVolts(PIN_VBAT_READ);
delayMicroseconds(200);
}
mv /= 8;
analogReadResolution(10); analogReadResolution(10);
return volts * 1000; return static_cast<uint16_t>(mv * ADC_MULTIPLIER );
} }
const char* ThinknodeM2Board::getManufacturerName() const { const char* ThinknodeM2Board::getManufacturerName() const {
return "Elecrow ThinkNode M2"; return "Elecrow ThinkNode M2";