65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
float _sensor_battery_saveMode = ENERGY_SAVE_MODE_DISABLED;
|
|
uint16_t energySavingIterations = 0;
|
|
|
|
// Copied from https://arduinodiy.wordpress.com/2016/12/25/monitoring-lipo-battery-voltage-with-wemos-d1-minibattery-shield-and-thingspeak/
|
|
#ifdef SENSOR_BATTERY
|
|
float battery_voltage() {
|
|
// ESP8266 ADC pin input voltage range ist 0V .. 1V
|
|
// The Wemos D1 mini does already contain a voltage divider circuit: A0(Wemos PCB) -- [220kOhm] -- ADC (ESP8266)-- [100kOhm] -- GND
|
|
// The (+) pole of the battery is connected to the A0 pin of the Wemos board through a additional 100kOhm resistance.
|
|
// The battery voltage of 4.2V max is measured as 1.0V on ESP8266 ADC pin.
|
|
uint16_t raw = analogRead(A0);
|
|
float volt = raw / 1023.0;
|
|
return volt * 4.2;
|
|
}
|
|
|
|
float battery_charging() {
|
|
//debug("charging pin=" + String(digitalRead(BAT_CHARGING_PIN)));
|
|
//debug("charged pin=" + String(digitalRead(BAT_CHARGED_PIN)));
|
|
|
|
if (LOW == digitalRead(BAT_CHARGING_PIN)) {
|
|
return BAT_CHARGE_STATE_CHARGING;
|
|
} else if (LOW == digitalRead(BAT_CHARGED_PIN)) {
|
|
return BAT_CHARGE_STATE_CHARGED;
|
|
}
|
|
|
|
return BAT_CHARGE_STATE_NOTCHARGING;
|
|
}
|
|
|
|
int energySavingMode() {
|
|
// Give the solar panel some time to load the cell to prevent
|
|
// flapping.
|
|
if (energySavingIterations > 0) {
|
|
energySavingIterations--;
|
|
_sensor_battery_saveMode = ENERGY_SAVE_MODE_ENABLED;
|
|
return 1;
|
|
}
|
|
|
|
// Is the battery low?
|
|
if (currentSensorData[SENSOR_BAT_VOLTAGE] <= BAT_LOW_VOLTAGE) {
|
|
// Entering energy saving
|
|
energySavingIterations = ENERGY_SAVING_ITERATIONS;
|
|
_sensor_battery_saveMode = ENERGY_SAVE_MODE_ENABLED;
|
|
return 1;
|
|
}
|
|
|
|
_sensor_battery_saveMode = ENERGY_SAVE_MODE_DISABLED;
|
|
return 0;
|
|
}
|
|
|
|
float isEnergySavingMode() {
|
|
return _sensor_battery_saveMode;
|
|
}
|
|
#endif
|
|
|
|
#ifdef SENSOR_USB_VOLTAGE
|
|
float usb_voltage() {
|
|
// ESP8266 ADC pin input voltage range ist 0V .. 1V
|
|
// The Wemos D1 mini does already contain a voltage divider circuit: A0(Wemos PCB) -- [220kOhm] -- ADC (ESP8266)-- [100kOhm] -- GND
|
|
// The (+) pole of the battery is connected to the A0 pin of the Wemos board through a additional 300kOhm resistance.
|
|
// The USB voltage of 5V max is measured as 1.0V on ESP8266 ADC pin.
|
|
uint16_t raw = analogRead(A0);
|
|
float volt = raw / 1023.0;
|
|
return volt * 6.2;
|
|
}
|
|
#endif
|