slavino commented 3 years ago

https://github.com/m5stack/M5Stack/issues/74

int8_t getBatteryLevel()
{
  Wire.beginTransmission(0x75);
  Wire.write(0x78);
  if (Wire.endTransmission(false) == 0
   && Wire.requestFrom(0x75, 1)) {
    switch (Wire.read() & 0xF0) {
    case 0xE0: return 25;
    case 0xC0: return 50;
    case 0x80: return 75;
    case 0x00: return 100;
    default: return 0;
    }
  }
  return -1;
}

lewisxhe commented 3 years ago

Without testing it, the theory is the same.

BERNADKB commented 3 years ago

The below lines of code worked for me.

`#include "Arduino.h"

include "Wire.h"

/* * IP5306 Power Module /

/ M5 Defaults KeyOff: Enabled BoostOutput: Disabled PowerOnLoad: Enabled Charger: Enabled Boost: Enabled LowBatShutdown: Enabled ShortPressBoostSwitch: Disabled FlashlightClicks: Double Press BoostOffClicks: Long Press BoostAfterVin: Open LongPressTime: 2s ChargeUnderVoltageLoop: 4.55V ChargeCCLoop: Vin VinCurrent: 2250mA VoltagePressure: 28mV ChargingFullStopVoltage: 4.17V LightLoadShutdownTime: 32s EndChargeCurrentDetection: 500mA ChargeCutoffVoltage: 4.2V /

define IP5306_REG_SYS_0 0x00

define IP5306_REG_SYS_1 0x01

define IP5306_REG_SYS_2 0x02

define IP5306_REG_CHG_0 0x20

define IP5306_REG_CHG_1 0x21

define IP5306_REG_CHG_2 0x22

define IP5306_REG_CHG_3 0x23

define IP5306_REG_CHG_4 0x24

define IP5306_REG_READ_0 0x70

define IP5306_REG_READ_1 0x71

define IP5306_REG_READ_2 0x72

define IP5306_REG_READ_3 0x77

define IP5306_REG_READ_4 0x78

define IP5306_GetKeyOffEnabled() ip5306_get_bits(IP5306_REG_SYS_0, 0, 1)

define IP5306_SetKeyOffEnabled(v) ip5306_set_bits(IP5306_REG_SYS_0, 0, 1, v)//0:dis,*1:en

define IP5306_GetBoostOutputEnabled() ip5306_get_bits(IP5306_REG_SYS_0, 1, 1)

define IP5306_SetBoostOutputEnabled(v) ip5306_set_bits(IP5306_REG_SYS_0, 1, 1, v)//*0:dis,1:en

define IP5306_GetPowerOnLoadEnabled() ip5306_get_bits(IP5306_REG_SYS_0, 2, 1)

define IP5306_SetPowerOnLoadEnabled(v) ip5306_set_bits(IP5306_REG_SYS_0, 2, 1, v)//0:dis,*1:en

define IP5306_GetChargerEnabled() ip5306_get_bits(IP5306_REG_SYS_0, 4, 1)

define IP5306_SetChargerEnabled(v) ip5306_set_bits(IP5306_REG_SYS_0, 4, 1, v)//0:dis,*1:en

define IP5306_GetBoostEnabled() ip5306_get_bits(IP5306_REG_SYS_0, 5, 1)

define IP5306_SetBoostEnabled(v) ip5306_set_bits(IP5306_REG_SYS_0, 5, 1, v)//0:dis,*1:en

define IP5306_GetLowBatShutdownEnable() ip5306_get_bits(IP5306_REG_SYS_1, 0, 1)

define IP5306_SetLowBatShutdownEnable(v) ip5306_set_bits(IP5306_REG_SYS_1, 0, 1, v)//0:dis,*1:en

define IP5306_GetBoostAfterVin() ip5306_get_bits(IP5306_REG_SYS_1, 2, 1)

define IP5306_SetBoostAfterVin(v) ip5306_set_bits(IP5306_REG_SYS_1, 2, 1, v)//0:Closed, *1:Open

define IP5306_GetShortPressBoostSwitchEnable() ip5306_get_bits(IP5306_REG_SYS_1, 5, 1)

define IP5306_SetShortPressBoostSwitchEnable(v) ip5306_set_bits(IP5306_REG_SYS_1, 5, 1, v)//*0:disabled, 1:enabled

define IP5306_GetFlashlightClicks() ip5306_get_bits(IP5306_REG_SYS_1, 6, 1)

define IP5306_SetFlashlightClicks(v) ip5306_set_bits(IP5306_REG_SYS_1, 6, 1, v)//*0:short press twice, 1:long press

define IP5306_GetBoostOffClicks() ip5306_get_bits(IP5306_REG_SYS_1, 7, 1)

define IP5306_SetBoostOffClicks(v) ip5306_set_bits(IP5306_REG_SYS_1, 7, 1, v)//*0:long press, 1:short press twice

define IP5306_GetLightLoadShutdownTime() ip5306_get_bits(IP5306_REG_SYS_2, 2, 2)

define IP5306_SetLightLoadShutdownTime(v) ip5306_set_bits(IP5306_REG_SYS_2, 2, 2, v)//0:8s, *1:32s, 2:16s, 3:64s

define IP5306_GetLongPressTime() ip5306_get_bits(IP5306_REG_SYS_2, 4, 1)

define IP5306_SetLongPressTime(v) ip5306_set_bits(IP5306_REG_SYS_2, 4, 1, v)//*0:2s, 1:3s

define IP5306_GetChargingFullStopVoltage() ip5306_get_bits(IP5306_REG_CHG_0, 0, 2)

define IP5306_SetChargingFullStopVoltage(v) ip5306_set_bits(IP5306_REG_CHG_0, 0, 2, v)//0:4.14V, *1:4.17V, 2:4.185V, 3:4.2V (values are for charge cutoff voltage 4.2V, 0 or 1 is recommended)

define IP5306_GetChargeUnderVoltageLoop() ip5306_get_bits(IP5306_REG_CHG_1, 2, 3) //Automatically adjust the charging current when the voltage of VOUT is greater than the set value

define IP5306_SetChargeUnderVoltageLoop(v) ip5306_set_bits(IP5306_REG_CHG_1, 2, 3, v)//Vout=4.45V + (v * 0.05V) (default 4.55V) //When charging at the maximum current, the charge is less than the set value. Slowly reducing the charging current to maintain this voltage

define IP5306_GetEndChargeCurrentDetection() ip5306_get_bits(IP5306_REG_CHG_1, 6, 2)

define IP5306_SetEndChargeCurrentDetection(v) ip5306_set_bits(IP5306_REG_CHG_1, 6, 2, v)//0:200mA, 1:400mA, *2:500mA, 3:600mA

define IP5306_GetVoltagePressure() ip5306_get_bits(IP5306_REG_CHG_2, 0, 2)

define IP5306_SetVoltagePressure(v) ip5306_set_bits(IP5306_REG_CHG_2, 0, 2, v)//0:none, 1:14mV, *2:28mV, 3:42mV (28mV recommended for 4.2V)

define IP5306_GetChargeCutoffVoltage() ip5306_get_bits(IP5306_REG_CHG_2, 2, 2)

define IP5306_SetChargeCutoffVoltage(v) ip5306_set_bits(IP5306_REG_CHG_2, 2, 2, v)//*0:4.2V, 1:4.3V, 2:4.35V, 3:4.4V

define IP5306_GetChargeCCLoop() ip5306_get_bits(IP5306_REG_CHG_3, 5, 1)

define IP5306_SetChargeCCLoop(v) ip5306_set_bits(IP5306_REG_CHG_3, 5, 1, v)//0:BAT, *1:VIN

define IP5306_GetVinCurrent() ip5306_get_bits(IP5306_REG_CHG_4, 0, 5)

define IP5306_SetVinCurrent(v) ip5306_set_bits(IP5306_REG_CHG_4, 0, 5, v)//ImA=(v*100)+50 (default 2250mA)

define IP5306_GetShortPressDetected() ip5306_get_bits(IP5306_REG_READ_3, 0, 1)

define IP5306_ClearShortPressDetected() ip5306_set_bits(IP5306_REG_READ_3, 0, 1, 1)

define IP5306_GetLongPressDetected() ip5306_get_bits(IP5306_REG_READ_3, 1, 1)

define IP5306_ClearLongPressDetected() ip5306_set_bits(IP5306_REG_READ_3, 1, 1, 1)

define IP5306_GetDoubleClickDetected() ip5306_get_bits(IP5306_REG_READ_3, 2, 1)

define IP5306_ClearDoubleClickDetected() ip5306_set_bits(IP5306_REG_READ_3, 2, 1, 1)

define IP5306_GetPowerSource() ip5306_get_bits(IP5306_REG_READ_0, 3, 1)//0:BAT, 1:VIN

define IP5306_GetBatteryFull() ip5306_get_bits(IP5306_REG_READ_1, 3, 1)//0:CHG/DIS, 1:FULL

define IP5306_GetOutputLoad() ip5306_get_bits(IP5306_REG_READ_2, 2, 1)//0:heavy, 1:light

define IP5306_GetLevelLeds() ((~ip5306_get_bits(IP5306_REG_READ_4, 4, 4)) & 0x0F)//LED[0-4] State (inverted)

define IP5306_LEDS2PCT(byte) \

((byte & 0x01 ? 25 : 0) + \ (byte & 0x02 ? 25 : 0) + \ (byte & 0x04 ? 25 : 0) + \ (byte & 0x08 ? 25 : 0))

int ip5306_get_reg(uint8_t reg){ Wire.beginTransmission(0x75); Wire.write(reg); if(Wire.endTransmission(false) == 0 && Wire.requestFrom(0x75, 1)){ return Wire.read(); } return -1; }

int ip5306_set_reg(uint8_t reg, uint8_t value){ Wire.beginTransmission(0x75); Wire.write(reg); Wire.write(value); if(Wire.endTransmission(true) == 0){ return 0; } return -1; }

uint8_t ip5306_get_bits(uint8_t reg, uint8_t index, uint8_t bits){ int value = ip5306_get_reg(reg); if(value < 0){ Serial.printf("ip5306_get_bits fail: 0x%02x\n", reg); return 0; } return (value >> index) & ((1 << bits)-1); }

void ip5306_set_bits(uint8_t reg, uint8_t index, uint8_t bits, uint8_t value){ uint8_t mask = (1 << bits) - 1; int v = ip5306_get_reg(reg); if(v < 0){ Serial.printf("ip5306_get_reg fail: 0x%02x\n", reg); return; } v &= ~(mask << index); v |= ((value & mask) << index); if(ip5306_set_reg(reg, v)){ Serial.printf("ip5306_set_bits fail: 0x%02x\n", reg); } }

void printIP5306Stats(){ bool usb = IP5306_GetPowerSource(); bool full = IP5306_GetBatteryFull(); uint8_t leds = IP5306_GetLevelLeds(); Serial.printf("%u%%\n", IP5306_LEDS2PCT(leds)); Serial.printf("%s\n", usb?"USB":"BATTERY"); //Serial.printf("IP5306: Power Source: %s, Battery State: %s, Battery Available: %u%%\n", usb?"USB":"BATTERY", full?"CHARGED":(usb?"CHARGING":"DISCHARGING"), IP5306_LEDS2PCT(leds)); //IP5306: Power Source: USB, Battery State: CHARGED, Battery Available: 100% }

void printIP5306Settings(){ Serial.println("IP5306 Settings:"); Serial.printf(" KeyOff: %s\n", IP5306_GetKeyOffEnabled()?"Enabled":"Disabled"); Serial.printf(" BoostOutput: %s\n", IP5306_GetBoostOutputEnabled()?"Enabled":"Disabled"); Serial.printf(" PowerOnLoad: %s\n", IP5306_GetPowerOnLoadEnabled()?"Enabled":"Disabled"); Serial.printf(" Charger: %s\n", IP5306_GetChargerEnabled()?"Enabled":"Disabled"); Serial.printf(" Boost: %s\n", IP5306_GetBoostEnabled()?"Enabled":"Disabled"); Serial.printf(" LowBatShutdown: %s\n", IP5306_GetLowBatShutdownEnable()?"Enabled":"Disabled"); Serial.printf(" ShortPressBoostSwitch: %s\n", IP5306_GetShortPressBoostSwitchEnable()?"Enabled":"Disabled"); Serial.printf(" FlashlightClicks: %s\n", IP5306_GetFlashlightClicks()?"Long Press":"Double Press"); Serial.printf(" BoostOffClicks: %s\n", IP5306_GetBoostOffClicks()?"Double Press":"Long Press"); Serial.printf(" BoostAfterVin: %s\n", IP5306_GetBoostAfterVin()?"Open":"Not Open"); Serial.printf(" LongPressTime: %s\n", IP5306_GetLongPressTime()?"3s":"2s"); Serial.printf(" ChargeUnderVoltageLoop: %.2fV\n", 4.45 + (IP5306_GetChargeUnderVoltageLoop() 0.05)); Serial.printf(" ChargeCCLoop: %s\n", IP5306_GetChargeCCLoop()?"Vin":"Bat"); Serial.printf(" VinCurrent: %dmA\n", (IP5306_GetVinCurrent() 100) + 50); Serial.printf(" VoltagePressure: %dmV\n", IP5306_GetVoltagePressure()*14); Serial.printf(" ChargingFullStopVoltage: %u\n", IP5306_GetChargingFullStopVoltage()); Serial.printf(" LightLoadShutdownTime: %u\n", IP5306_GetLightLoadShutdownTime()); Serial.printf(" EndChargeCurrentDetection: %u\n", IP5306_GetEndChargeCurrentDetection()); Serial.printf(" ChargeCutoffVoltage: %u\n", IP5306_GetChargeCutoffVoltage()); Serial.println(); }

void setup(){ Serial.begin(115200); Wire.begin(); printIP5306Settings(); }

void loop(){ printIP5306Stats(); delay(1000); }`