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Switch Analog Voltage on esp32 to use analogReadMilliVolts #620

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Switch Analog Voltage on esp32 to use analogReadMilliVolts #620

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9120715
Switch Analog Voltage on esp32 to use analogReadMilliVolts
tyeth Aug 20, 2024
a34dd53
Add logging to check which branch is executing
tyeth Aug 20, 2024
49dd18c
Test a wild theory about Serial1
tyeth Aug 21, 2024
6c7ff60
Fix second route of logic for ADC volts
tyeth Aug 23, 2024
e900f61
Set 13 or 12bit depending on S3 or not
tyeth Aug 23, 2024
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15 changes: 11 additions & 4 deletions src/components/analogIO/Wippersnapper_AnalogIO.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -87,16 +87,19 @@ void Wippersnapper_AnalogIO::setADCResolution(int resolution) {
analogReadResolution(16);
_nativeResolution = 12;
#elif defined(ARDUINO_ARCH_ESP32)
scaleAnalogRead = true;
_nativeResolution = 13;
scaleAnalogRead = true; // probably should be false, handled in bsp
#if defined(ESP32S3)
_nativeResolution = 13; // S3 ADC is 13-bit, others are 12-bit
#else
_nativeResolution = 12;
#endif
#elif defined(ARDUINO_ARCH_RP2040)
scaleAnalogRead = true;
_nativeResolution = 10;
#else
scaleAnalogRead = true;
_nativeResolution = 10;
#endif

_adcResolution = resolution;
}

Expand Down Expand Up @@ -232,8 +235,12 @@ uint16_t Wippersnapper_AnalogIO::getPinValue(int pin) {
*/
/**********************************************************/
float Wippersnapper_AnalogIO::getPinValueVolts(int pin) {
#ifdef ARDUINO_ARCH_ESP32
return analogReadMilliVolts(pin) / 1000.0;
#else
uint16_t rawValue = getPinValue(pin);
return rawValue * getAref() / 65536;
#endif
}

/******************************************************************/
Expand Down Expand Up @@ -380,7 +387,7 @@ void Wippersnapper_AnalogIO::update() {
// Perform voltage conversion if we need to
if (_analog_input_pins[i].readMode ==
wippersnapper_pin_v1_ConfigurePinRequest_AnalogReadMode_ANALOG_READ_MODE_PIN_VOLTAGE) {
pinValVolts = pinValRaw * getAref() / 65536;
pinValVolts = getPinValueVolts(_analog_input_pins[i].pinName);
}

// Publish pin event to IO
Expand Down
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