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Merge branch 'master' into issue-108

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Kevin Hester 2021-07-26 04:23:33 +08:00 committed by GitHub
commit 5826c52242
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2 changed files with 38 additions and 5 deletions
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24
src/Power.cpp
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@ -43,6 +43,7 @@ Power *power;
using namespace meshtastic;
#ifndef AREF_VOLTAGE
#if defined(NRF52_SERIES)
/*
* Internal Reference is +/-0.6V, with an adjustable gain of 1/6, 1/5, 1/4,
@ -57,6 +58,7 @@ using namespace meshtastic;
#else
#define AREF_VOLTAGE 3.3
#endif
#endif
/**
* If this board has a battery level sensor, set this to a valid implementation
@ -102,8 +104,12 @@ class AnalogBatteryLevel : public HasBatteryLevel
if (millis() - last_read_time_ms > min_read_interval) {
last_read_time_ms = millis();
uint32_t raw = analogRead(BATTERY_PIN);
float scaled = 1000.0 * ADC_MULTIPLIER * (AREF_VOLTAGE / 1024.0) * raw;
float scaled;
#ifndef VBAT_RAW_TO_SCALED
scaled = 1000.0 * ADC_MULTIPLIER * (AREF_VOLTAGE / 1024.0) * raw;
#else
scaled = VBAT_RAW_TO_SCALED(raw); //defined in variant.h
#endif
// DEBUG_MSG("battery gpio %d raw val=%u scaled=%u\n", BATTERY_PIN, raw, (uint32_t)(scaled));
last_read_value = scaled;
return scaled;
@ -136,7 +142,9 @@ class AnalogBatteryLevel : public HasBatteryLevel
const float fullVolt = 4200, emptyVolt = 3270, chargingVolt = 4210, noBatVolt = 2230;
float last_read_value = 0.0;
uint32_t last_read_time_ms = 0;
} analogLevel;
};
AnalogBatteryLevel analogLevel;
Power::Power() : OSThread("Power") {}
@ -153,11 +161,19 @@ bool Power::analogInit()
adcAttachPin(BATTERY_PIN);
#endif
#ifdef NRF52_SERIES
#ifdef VBAT_AR_INTERNAL
analogReference(VBAT_AR_INTERNAL);
#else
analogReference(AR_INTERNAL); // 3.6V
#endif
#endif
#ifndef BATTERY_SENSE_RESOLUTION_BITS
#define BATTERY_SENSE_RESOLUTION_BITS 10
#endif
// adcStart(BATTERY_PIN);
analogReadResolution(10); // Default of 12 is not very linear. Recommended to use 10 or 11 depending on needed resolution.
analogReadResolution(BATTERY_SENSE_RESOLUTION_BITS); // Default of 12 is not very linear. Recommended to use 10 or 11 depending on needed resolution.
batteryLevel = &analogLevel;
return true;
#else

19
variants/WisCore_RAK4631_Board/variant.h
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@ -171,8 +171,25 @@ static const uint8_t SCK = PIN_SPI_SCK;
#define GPS_RX_PIN PIN_SERIAL1_RX
#define GPS_TX_PIN PIN_SERIAL1_TX
// The battery sense is hooked to pin A0
// Battery
// The battery sense is hooked to pin A0 (5)
#define BATTERY_PIN PIN_A0
// and has 12 bit resolution
#define BATTERY_SENSE_RESOLUTION_BITS 12
#define BATTERY_SENSE_RESOLUTION 4096.0
// Definition of milliVolt per LSB => 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
#define VBAT_MV_PER_LSB (0.73242188F)
// Voltage divider value => 1.5M + 1M voltage divider on VBAT = (1.5M / (1M + 1.5M))
#define VBAT_DIVIDER (0.4F)
// Compensation factor for the VBAT divider
#define VBAT_DIVIDER_COMP (1.73)
// Fixed calculation of milliVolt from compensation value
#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
#undef AREF_VOLTAGE
#define AREF_VOLTAGE 3.0
#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
#define ADC_MULTIPLIER VBAT_DIVIDER_COMP //REAL_VBAT_MV_PER_LSB
#define VBAT_RAW_TO_SCALED(x) (REAL_VBAT_MV_PER_LSB * x)
#ifdef __cplusplus
}