mikecarper
ab6412e73c
Add meter-reference calibration with saved ADC corrections, checked persistence and rollback. Preserve existing board coefficients and nRF52 voltage policy, and merge the Mini Repeater feature gates. Validation: 69 focused tests, hosted documentation checks, and four firmware builds passed. Mini Repeater retains calibration and its existing filesystem with 376 flash bytes free; earlier Mini Sensor size failures remain documented.
29 lines
721 B
C++
29 lines
721 B
C++
#include <Arduino.h>
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#include "ThinkNodeM3Board.h"
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#include <Wire.h>
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#include <bluefruit.h>
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void ThinkNodeM3Board::begin() {
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NRF52Board::begin();
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btn_prev_state = HIGH;
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Wire.begin();
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delay(10); // give sx1262 some time to power up
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}
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uint16_t ThinkNodeM3Board::getBattMilliVolts() {
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int adcvalue = 0;
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analogReference(AR_INTERNAL_2_4);
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analogReadResolution(ADC_RESOLUTION);
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delay(10);
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// ADC range is 0..2400mV and resolution is 12-bit (0..4095)
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adcvalue = analogRead(PIN_VBAT_READ);
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// Convert the raw value to compensated mv, taking the resistor-
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// divider into account (providing the actual LIPO voltage)
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return calibrateBatteryMillivolts((uint16_t)((float)adcvalue * ADC_FACTOR));
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}
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