mirror of
https://github.com/meshtastic/firmware.git
synced 2025-02-03 19:29:57 +00:00
261 lines
8.8 KiB
C++
261 lines
8.8 KiB
C++
#include "power.h"
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#include "PowerFSM.h"
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#include "main.h"
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#include "sleep.h"
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#include "utils.h"
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// FIXME. nasty hack cleanup how we load axp192
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#undef AXP192_SLAVE_ADDRESS
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#include "axp20x.h"
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#ifdef TBEAM_V10
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AXP20X_Class axp;
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#endif
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bool pmu_irq = false;
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Power *power;
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using namespace meshtastic;
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/**
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* If this board has a battery level sensor, set this to a valid implementation
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*/
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static HasBatteryLevel *batteryLevel; // Default to NULL for no battery level sensor
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/**
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* A simple battery level sensor that assumes the battery voltage is attached via a voltage-divider to an analog input
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*/
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class AnalogBatteryLevel : public HasBatteryLevel
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{
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/**
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* Battery state of charge, from 0 to 100 or -1 for unknown
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*
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* FIXME - use a lipo lookup table, the current % full is super wrong
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*/
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virtual int getBattPercentage()
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{
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float v = getBattVoltage() / 1000;
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if (v < 2.1)
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return -1; // If voltage is super low assume no battery installed
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return 100 * (v - 3.27) / (4.2 - 3.27);
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}
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/**
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* The raw voltage of the batteryin millivolts or NAN if unknown
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*/
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virtual float getBattVoltage()
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{
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return
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#ifdef BATTERY_PIN
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1000.0 * analogRead(BATTERY_PIN) * 2.0 * (3.3 / 1024.0);
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#else
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NAN;
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#endif
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}
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/**
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* return true if there is a battery installed in this unit
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*/
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virtual bool isBatteryConnect() { return getBattVoltage() != -1; }
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} analogLevel;
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Power::Power() : OSThread("Power") {}
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bool Power::analogInit()
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{
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#ifdef BATTERY_PIN
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DEBUG_MSG("Using analog input for battery level\n");
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#ifndef NO_ESP32
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// ESP32 needs special analog stuff
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adcAttachPin(BATTERY_PIN);
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#endif
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// adcStart(BATTERY_PIN);
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analogReadResolution(10); // Default of 12 is not very linear. Recommended to use 10 or 11 depending on needed resolution.
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batteryLevel = &analogLevel;
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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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bool Power::setup()
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{
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bool found = axp192Init();
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if (!found) {
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found = analogInit();
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}
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enabled = found;
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return found;
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}
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/// Reads power status to powerStatus singleton.
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//
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// TODO(girts): move this and other axp stuff to power.h/power.cpp.
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void Power::readPowerStatus()
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{
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if (batteryLevel) {
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bool hasBattery = batteryLevel->isBatteryConnect();
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int batteryVoltageMv = 0;
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int8_t batteryChargePercent = 0;
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if (hasBattery) {
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batteryVoltageMv = batteryLevel->getBattVoltage();
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// If the AXP192 returns a valid battery percentage, use it
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if (batteryLevel->getBattPercentage() >= 0) {
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batteryChargePercent = batteryLevel->getBattPercentage();
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} else {
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// If the AXP192 returns a percentage less than 0, the feature is either not supported or there is an error
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// In that case, we compute an estimate of the charge percent based on maximum and minimum voltages defined in
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// power.h
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batteryChargePercent =
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clamp((int)(((batteryVoltageMv - BAT_MILLIVOLTS_EMPTY) * 1e2) / (BAT_MILLIVOLTS_FULL - BAT_MILLIVOLTS_EMPTY)),
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0, 100);
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}
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}
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// Notify any status instances that are observing us
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const PowerStatus powerStatus =
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PowerStatus(hasBattery ? OptTrue : OptFalse, batteryLevel->isVBUSPlug() ? OptTrue : OptFalse,
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batteryLevel->isChargeing() ? OptTrue : OptFalse, batteryVoltageMv, batteryChargePercent);
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DEBUG_MSG("Read power stat %d\n", powerStatus.getHasUSB());
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newStatus.notifyObservers(&powerStatus);
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// If we have a battery at all and it is less than 10% full, force deep sleep
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if (powerStatus.getHasBattery() && !powerStatus.getHasUSB() && batteryLevel->getBattVoltage() < MIN_BAT_MILLIVOLTS)
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powerFSM.trigger(EVENT_LOW_BATTERY);
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} else {
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// No power sensing on this board - tell everyone else we have no idea what is happening
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const PowerStatus powerStatus = PowerStatus(OptUnknown, OptUnknown, OptUnknown, -1, -1);
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newStatus.notifyObservers(&powerStatus);
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}
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}
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int32_t Power::runOnce()
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{
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readPowerStatus();
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#ifdef TBEAM_V10
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// WE no longer use the IRQ line to wake the CPU (due to false wakes from sleep), but we do poll
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// the IRQ status by reading the registers over I2C
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axp.readIRQ();
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if (axp.isVbusRemoveIRQ()) {
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DEBUG_MSG("USB unplugged\n");
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powerFSM.trigger(EVENT_POWER_DISCONNECTED);
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}
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if (axp.isVbusPlugInIRQ()) {
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DEBUG_MSG("USB plugged In\n");
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powerFSM.trigger(EVENT_POWER_CONNECTED);
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}
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/*
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Other things we could check if we cared...
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if (axp.isChargingIRQ()) {
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DEBUG_MSG("Battery start charging\n");
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}
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if (axp.isChargingDoneIRQ()) {
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DEBUG_MSG("Battery fully charged\n");
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}
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if (axp.isBattPlugInIRQ()) {
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DEBUG_MSG("Battery inserted\n");
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}
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if (axp.isBattRemoveIRQ()) {
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DEBUG_MSG("Battery removed\n");
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}
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if (axp.isPEKShortPressIRQ()) {
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DEBUG_MSG("PEK short button press\n");
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}
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*/
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axp.clearIRQ();
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#endif
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// Only read once every 20 seconds once the power status for the app has been initialized
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return (statusHandler && statusHandler->isInitialized()) ? (1000 * 20) : RUN_SAME;
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}
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/**
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* Init the power manager chip
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*
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* axp192 power
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DCDC1 0.7-3.5V @ 1200mA max -> OLED // If you turn this off you'll lose comms to the axp192 because the OLED and the axp192
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share the same i2c bus, instead use ssd1306 sleep mode DCDC2 -> unused DCDC3 0.7-3.5V @ 700mA max -> ESP32 (keep this on!) LDO1
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30mA -> charges GPS backup battery // charges the tiny J13 battery by the GPS to power the GPS ram (for a couple of days), can
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not be turned off LDO2 200mA -> LORA LDO3 200mA -> GPS
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*/
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bool Power::axp192Init()
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{
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#ifdef TBEAM_V10
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if (axp192_found) {
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if (!axp.begin(Wire, AXP192_SLAVE_ADDRESS)) {
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batteryLevel = &axp;
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DEBUG_MSG("AXP192 Begin PASS\n");
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// axp.setChgLEDMode(LED_BLINK_4HZ);
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DEBUG_MSG("DCDC1: %s\n", axp.isDCDC1Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("DCDC2: %s\n", axp.isDCDC2Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("LDO2: %s\n", axp.isLDO2Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("LDO3: %s\n", axp.isLDO3Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("DCDC3: %s\n", axp.isDCDC3Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("Exten: %s\n", axp.isExtenEnable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("----------------------------------------\n");
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axp.setPowerOutPut(AXP192_LDO2, AXP202_ON); // LORA radio
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// axp.setPowerOutPut(AXP192_LDO3, AXP202_ON); // GPS main power - now turned on in setGpsPower
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axp.setPowerOutPut(AXP192_DCDC2, AXP202_ON);
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axp.setPowerOutPut(AXP192_EXTEN, AXP202_ON);
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axp.setPowerOutPut(AXP192_DCDC1, AXP202_ON);
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axp.setDCDC1Voltage(3300); // for the OLED power
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DEBUG_MSG("DCDC1: %s\n", axp.isDCDC1Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("DCDC2: %s\n", axp.isDCDC2Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("LDO2: %s\n", axp.isLDO2Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("LDO3: %s\n", axp.isLDO3Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("DCDC3: %s\n", axp.isDCDC3Enable() ? "ENABLE" : "DISABLE");
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DEBUG_MSG("Exten: %s\n", axp.isExtenEnable() ? "ENABLE" : "DISABLE");
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axp.setChargeControlCur(AXP1XX_CHARGE_CUR_1320MA); // actual limit (in HW) on the tbeam is 450mA
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#if 0
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// Not connected
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//val = 0xfc;
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//axp._writeByte(AXP202_VHTF_CHGSET, 1, &val); // Set temperature protection
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//not used
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//val = 0x46;
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//axp._writeByte(AXP202_OFF_CTL, 1, &val); // enable bat detection
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#endif
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axp.debugCharging();
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#ifdef PMU_IRQ
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pinMode(PMU_IRQ, INPUT);
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attachInterrupt(
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PMU_IRQ, [] { pmu_irq = true; }, FALLING);
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axp.adc1Enable(AXP202_BATT_CUR_ADC1, 1);
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// we do not look for AXP202_CHARGING_FINISHED_IRQ & AXP202_CHARGING_IRQ because it occurs repeatedly while there is
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// no battery also it could cause inadvertent waking from light sleep just because the battery filled
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// we don't look for AXP202_BATT_REMOVED_IRQ because it occurs repeatedly while no battery installed
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// we don't look at AXP202_VBUS_REMOVED_IRQ because we don't have anything hooked to vbus
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axp.enableIRQ(AXP202_BATT_CONNECT_IRQ | AXP202_VBUS_CONNECT_IRQ | AXP202_PEK_SHORTPRESS_IRQ, 1);
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axp.clearIRQ();
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#endif
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readPowerStatus();
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} else {
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DEBUG_MSG("AXP192 Begin FAIL\n");
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}
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} else {
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DEBUG_MSG("AXP192 not found\n");
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}
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return axp192_found;
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#else
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return false;
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#endif
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}
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