220 lines
7.4 KiB
C
220 lines
7.4 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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#define BAT_V_MIN 3.15
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#define BAT_V_MAX 4.14
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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_C_SAMPLES 7
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#define BAT_D_SAMPLES 2
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#define BAT_V_MIN 3.15
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#define BAT_V_MAX 4.3
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#define BAT_V_CHG 4.48
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#define BAT_V_FLOAT 4.33
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#define BAT_SAMPLES 5
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const uint8_t pin_vbat = 35;
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float bat_p_samples[BAT_SAMPLES];
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float bat_v_samples[BAT_SAMPLES];
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uint8_t bat_samples_count = 0;
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int bat_discharging_samples = 0;
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int bat_charging_samples = 0;
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int bat_charged_samples = 0;
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bool bat_voltage_dropping = false;
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float bat_delay_v = 0;
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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_installed = true;
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battery_indeterminate = true;
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bat_v_samples[bat_samples_count%BAT_SAMPLES] = (float)(analogRead(pin_vbat)) / 4095*2*3.3*1.1;
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bat_p_samples[bat_samples_count%BAT_SAMPLES] = ((battery_voltage-BAT_V_MIN) / (BAT_V_MAX-BAT_V_MIN))*100.0;
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bat_samples_count++;
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if (!battery_ready && bat_samples_count >= BAT_SAMPLES) {
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battery_ready = true;
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}
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if (battery_ready) {
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battery_percent = 0;
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for (uint8_t bi = 0; bi < BAT_SAMPLES; bi++) {
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battery_percent += bat_p_samples[bi];
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}
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battery_percent = battery_percent/BAT_SAMPLES;
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battery_voltage = 0;
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for (uint8_t bi = 0; bi < BAT_SAMPLES; bi++) {
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battery_voltage += bat_v_samples[bi];
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}
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battery_voltage = battery_voltage/BAT_SAMPLES;
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if (bat_delay_v == 0) bat_delay_v = battery_voltage;
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if (battery_percent > 100.0) battery_percent = 100.0;
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if (battery_percent < 0.0) battery_percent = 0.0;
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if (bat_samples_count%BAT_SAMPLES == 0) {
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if (battery_voltage < bat_delay_v && battery_voltage < BAT_V_FLOAT) {
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bat_voltage_dropping = true;
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} else {
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bat_voltage_dropping = false;
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}
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bat_samples_count = 0;
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}
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if (bat_voltage_dropping && battery_voltage < BAT_V_FLOAT) {
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battery_state = BATTERY_STATE_DISCHARGING;
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} else {
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#if BOARD_MODEL == BOARD_RNODE_NG_21
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battery_state = BATTERY_STATE_CHARGING;
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#else
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battery_state = BATTERY_STATE_DISCHARGING;
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#endif
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}
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// if (bt_state == BT_STATE_CONNECTED) {
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// SerialBT.printf("Bus voltage %.3fv. Unfiltered %.3fv.", battery_voltage, bat_v_samples[BAT_SAMPLES-1]);
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// if (bat_voltage_dropping) {
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// SerialBT.printf(" Voltage is dropping. Percentage %.1f%%.\n", battery_percent);
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// } else {
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// SerialBT.print(" Voltage is not dropping.\n");
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// }
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// }
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}
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#elif BOARD_MODEL == BOARD_TBEAM
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float discharge_current = PMU.getBattDischargeCurrent();
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float charge_current = PMU.getBattChargeCurrent();
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battery_voltage = PMU.getBattVoltage()/1000.0;
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// battery_percent = PMU.getBattPercentage()*1.0;
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battery_installed = PMU.isBatteryConnect();
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external_power = PMU.isVBUSPlug();
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float ext_voltage = PMU.getVbusVoltage()/1000.0;
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float ext_current = PMU.getVbusCurrent();
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if (battery_installed) {
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if (PMU.isChargeing()) {
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battery_state = BATTERY_STATE_CHARGING;
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battery_percent = ((battery_voltage-BAT_V_MIN) / (BAT_V_MAX-BAT_V_MIN))*100.0;
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} else {
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if (discharge_current > 0.0) {
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battery_state = BATTERY_STATE_DISCHARGING;
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battery_percent = ((battery_voltage-BAT_V_MIN) / (BAT_V_MAX-BAT_V_MIN))*100.0;
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} else {
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battery_state = BATTERY_STATE_CHARGED;
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battery_percent = 100.0;
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}
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}
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} else {
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battery_state = BATTERY_STATE_DISCHARGING;
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battery_percent = 0.0;
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battery_voltage = 0.0;
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}
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if (battery_percent > 100.0) battery_percent = 100.0;
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if (battery_percent < 0.0) battery_percent = 0.0;
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float charge_watts = battery_voltage*(charge_current/1000.0);
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float discharge_watts = battery_voltage*(discharge_current/1000.0);
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float ext_watts = ext_voltage*(ext_current/1000.0);
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battery_ready = true;
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// if (bt_state == BT_STATE_CONNECTED) {
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// if (battery_installed) {
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// if (external_power) {
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// SerialBT.printf("External power connected, drawing %.2fw, %.1fmA at %.1fV\n", ext_watts, ext_current, ext_voltage);
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// } else {
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// SerialBT.println("Running on battery");
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// }
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// SerialBT.printf("Battery percentage %.1f%%\n", battery_percent);
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// SerialBT.printf("Battery voltage %.2fv\n", battery_voltage);
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// // SerialBT.printf("Temperature %.1f%\n", auxillary_temperature);
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// if (battery_state == BATTERY_STATE_CHARGING) {
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// SerialBT.printf("Charging with %.2fw, %.1fmA at %.1fV\n", charge_watts, charge_current, battery_voltage);
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// } else if (battery_state == BATTERY_STATE_DISCHARGING) {
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// SerialBT.printf("Discharging at %.2fw, %.1fmA at %.1fV\n", discharge_watts, discharge_current, battery_voltage);
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// } else if (battery_state == BATTERY_STATE_CHARGED) {
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// SerialBT.printf("Battery charged\n");
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// }
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// } else {
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// SerialBT.println("No battery installed");
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// }
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// SerialBT.println("");
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// }
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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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