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Added power and battery management

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This commit is contained in:
Mark Qvist 2022-10-29 00:50:16 +02:00
parent fe5e6aab9c
commit ef771bba36
1 changed files with 106 additions and 0 deletions
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106
Power.h Normal file
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#if BOARD_MODEL == BOARD_TBEAM
#include <axp20x.h>
AXP20X_Class PMU;
void disablePeripherals() {
PMU.setPowerOutPut(AXP192_DCDC1, AXP202_OFF);
PMU.setPowerOutPut(AXP192_LDO2, AXP202_OFF);
PMU.setPowerOutPut(AXP192_LDO3, AXP202_OFF);
}
#elif BOARD_MODEL == BOARD_RNODE_NG_21 || BOARD_MODEL == BOARD_LORA32_V2_1
#define BAT_V_MIN 3.4
#define BAT_V_MAX 4.2
#define BAT_V_CHG 4.345
#define BAT_V_CHGD 4.31
const uint8_t pin_vbat = 35;
#endif
uint32_t last_pmu_update = 0;
uint8_t pmu_target_pps = 1;
int pmu_update_interval = 1000/pmu_target_pps;
void measure_battery() {
#if BOARD_MODEL == BOARD_RNODE_NG_21 || BOARD_MODEL == BOARD_LORA32_V2_1
battery_voltage = (float)(analogRead(pin_vbat)) / 4095*2*3.3*1.1;
battery_percent = ((battery_voltage-BAT_V_MIN) / (BAT_V_MAX-BAT_V_MIN))*100.0;
if (battery_percent > 100.0) battery_percent = 100.0;
if (battery_voltage > BAT_V_CHG) {
battery_state = BATTERY_STATE_CHARGING;
// Serial.printf("Battery charging. Voltage=%.2fv, percentage: %.2f%\n", battery_voltage, battery_percent);
} else if (battery_voltage > BAT_V_CHGD) {
battery_state = BATTERY_STATE_CHARGED;
// Serial.printf("Battery charged. Voltage=%.2fv, percentage: %.2f%\n", battery_voltage, battery_percent);
} else {
battery_state = BATTERY_STATE_DISCHARGING;
// Serial.printf("Battery discharging. Voltage=%.2fv, percentage: %.2f%\n", battery_voltage, battery_percent);
}
#elif BOARD_MODEL == BOARD_TBEAM
battery_voltage = 0.0;
battery_percent = 0.0;
#endif
}
void update_pmu() {
if (millis()-last_pmu_update >= pmu_update_interval) {
measure_battery();
last_pmu_update = millis();
}
}
bool init_pmu() {
#if BOARD_MODEL == BOARD_RNODE_NG_21 || BOARD_MODEL == BOARD_LORA32_V2_1
pinMode(pin_vbat, INPUT);
return true;
#elif BOARD_MODEL == BOARD_TBEAM
Wire.begin(I2C_SDA, I2C_SCL);
if (PMU.begin(Wire, AXP192_SLAVE_ADDRESS) == AXP_FAIL) return false;
// Configure charging indicator
PMU.setChgLEDMode(AXP20X_LED_OFF);
// Turn off unused power sources to save power
PMU.setPowerOutPut(AXP192_DCDC1, AXP202_OFF);
PMU.setPowerOutPut(AXP192_DCDC2, AXP202_OFF);
PMU.setPowerOutPut(AXP192_LDO2, AXP202_OFF);
PMU.setPowerOutPut(AXP192_LDO3, AXP202_OFF);
PMU.setPowerOutPut(AXP192_EXTEN, AXP202_OFF);
// Set the power of LoRa and GPS module to 3.3V
PMU.setLDO2Voltage(3300); //LoRa VDD
PMU.setLDO3Voltage(3300); //GPS VDD
PMU.setDCDC1Voltage(3300); //3.3V Pin next to 21 and 22 is controlled by DCDC1
PMU.setPowerOutPut(AXP192_DCDC1, AXP202_ON);
// Turn on SX1276
PMU.setPowerOutPut(AXP192_LDO2, AXP202_ON);
// Turn off GPS
PMU.setPowerOutPut(AXP192_LDO3, AXP202_OFF);
pinMode(PMU_IRQ, INPUT_PULLUP);
attachInterrupt(PMU_IRQ, [] {
// pmu_irq = true;
}, FALLING);
PMU.adc1Enable(AXP202_VBUS_VOL_ADC1 |
AXP202_VBUS_CUR_ADC1 |
AXP202_BATT_CUR_ADC1 |
AXP202_BATT_VOL_ADC1,
AXP202_ON);
PMU.enableIRQ(AXP202_VBUS_REMOVED_IRQ |
AXP202_VBUS_CONNECT_IRQ |
AXP202_BATT_REMOVED_IRQ |
AXP202_BATT_CONNECT_IRQ,
AXP202_ON);
PMU.clearIRQ();
return true;
#else
return false;
#endif
}