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Added code for esp8266

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This commit is contained in:
Erwin Repolust 2023-03-10 01:28:04 +01:00
parent e00e778bce
commit 8b61b9ebfe
1 changed files with 17 additions and 27 deletions
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44
usermods/Battery/usermod_v2_Battery.h
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@ -29,6 +29,10 @@ class UsermodBattery : public Usermod
float rawValue = 0.0f;
// calculated voltage
float voltage = maxBatteryVoltage;
// between 0 and 1, to control strength of voltage smoothing filter
float alpha = 0.05f;
// multiplyer for the voltage divider that is in place between ADC pin and battery, default will be 2 but might be adapted to readout voltages over ~5v ESP32 or ~6.6v ESP8266
float voltageMultiplyer = 2.0f;
// mapped battery level based on voltage
int8_t batteryLevel = 100;
// offset or calibration value to fine tune the calculated voltage
@ -126,8 +130,8 @@ class UsermodBattery : public Usermod
if (pinManager.allocatePin(batteryPin, false, PinOwner::UM_Battery)) {
DEBUG_PRINTLN(F("Battery pin allocation succeeded."));
success = true;
//initialize voltage with analog read
voltage = analogReadMilliVolts(batteryPin) / 500.0f + calibration;
//use calibrated millivolts analogread on esp32 (150 mV ~ 2450 mV default) and divide by 1000 to get from milivolts to volts and multiply by voltage divider and apply calibration value
voltage = (analogReadMilliVolts(batteryPin) / 1000.0f) * voltageMultiplyer + calibration;
}
if (!success) {
@ -137,8 +141,9 @@ class UsermodBattery : public Usermod
pinMode(batteryPin, INPUT);
}
#else //ESP8266 boards have only one analog input pin A0
pinMode(batteryPin, INPUT);
//use analog read on esp8266 ( 150 mV ~ 3000mV no attenuation options) and divide by ADC precision 1023 and multiply by 3v ADC max voltage and apply calibration value
voltage = (analogRead(batteryPin) / 1023.0f) * 3.3f * voltageMultiplyer + calibration;
#endif
nextReadTime = millis() + readingInterval;
@ -179,16 +184,15 @@ class UsermodBattery : public Usermod
initializing = false;
#ifdef ARDUINO_ARCH_ESP32
// use calibrated millivolts analogread on esp32 (150 mV ~ 2450 mV) and divide by 500 to fix to the right decimal place and multiply by 2 to account for the voltage divider
rawValue = analogReadMilliVolts(batteryPin) / 500.0f + calibration;
// calculate the voltage with a weighted running average because ADC in ESP32 is fluctuating too much for a good single readout
voltage = (voltage * 19.0f + rawValue) / 20.0f;
// use calibrated millivolts analogread on esp32 (150 mV ~ 2450 mV default) and divide by 1000 to get from milivolts to volts and multiply by voltage divider and apply calibration value
rawValue = (analogReadMilliVolts(batteryPin) / 1000.0f) * voltageMultiplyer + calibration;
// filter with exponential smoothing because ADC in esp32 is fluctuating too much for a good single readout
voltage = voltage + alpha * (rawValue - voltage);
#else
// read battery raw input
rawValue = analogRead(batteryPin);
// calculate the voltage
voltage = ((rawValue / getAdcPrecision()) * maxBatteryVoltage) + calibration;
// use analog read on esp8266 ( 150 mV ~ 3000mV no attenuation options) and divide by ADC precision 1023 and multiply by 3v ADC max voltage and apply calibration value
rawValue = (analogRead(batteryPin) / 1023.0f) * 3.0f * voltageMultiplyer + calibration;
// filter with exponential smoothing
voltage = voltage + alpha * (rawValue - voltage);
#endif
// check if voltage is within specified voltage range, allow 10% over/under voltage - removed cause this just makes it hard for people to troubleshoot as the voltage in the web gui will say invalid instead of displaying a voltage
//voltage = ((voltage < minBatteryVoltage * 0.85f) || (voltage > maxBatteryVoltage * 1.1f)) ? -1.0f : voltage;
@ -595,21 +599,7 @@ class UsermodBattery : public Usermod
totalBatteryCapacity = capacity;
}
/*
* Get the choosen adc precision
* esp8266 = 10bit resolution = 1024.0f
* esp32 = 12bit resolution = 4095.0f
*/
float getAdcPrecision()
{
#ifdef ARDUINO_ARCH_ESP32
// esp32
return 4096.0f;
#else
// esp8266
return 1024.0f;
#endif
}
/*
* Get the calculated voltage