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