M5Stick (gray) usb power from code

[cepics]

Hi all, is it possible to know if the power comes from the usb cable from code on M5Stick (gray)?

tnks a lot

[lukasmaximus]

Hi @cepics I presume your asking for code to check whether the usb is inserted or not, what the current flow over usb, battery charge amount etc. You didn't specify which programming language you wanted the code in. If your using Arduino this code may help you.

#include <M5StickC.h>
 
void setup() {
  // put your setup code here, to run once:
  M5.begin();
  M5.Lcd.fillScreen(BLACK);
   
  M5.Axp.EnableCoulombcounter();
}
double vbat = 0.0;
double discharge,charge;
double temp = 0.0;
double bat_p = 0.0;
double bat_p2 = 0.0;
 
void loop() {
  vbat      = M5.Axp.GetVbatData() * 1.1 / 1000;
  charge    = M5.Axp.GetIchargeData() / 2.0 / 1000;
  discharge = M5.Axp.GetIdischargeData() / 2.0 / 1000;
  temp      =  -144.7 + M5.Axp.GetTempData() * 0.1;
  bat_p     =  M5.Axp.GetPowerbatData() * 1.1 * 0.5 /1000 /1000;
   
  M5.Lcd.setCursor(0, 0, 1);
  M5.Lcd.printf("vbat   :%.2fV\r\n",vbat);
  M5.Lcd.printf("icharge:%.2fA\r\n",charge);
  M5.Lcd.printf("idischg:%.2fA\r\n",discharge);
  M5.Lcd.printf("temp   :%3.1fC\r\n",temp);
  M5.Lcd.printf("pbat   :%.2fW\r\n",bat_p);
  M5.Lcd.printf("CoIn   :%5d\r\n",M5.Axp.GetCoulombchargeData());
  M5.Lcd.printf("CoOut  :%5d\r\n",M5.Axp.GetCoulombdischargeData());
  M5.Lcd.printf("CoD    :%.2f\r\n",M5.Axp.GetCoulombData());
  M5.Lcd.printf("          mAh\r\n");
  M5.Lcd.printf("Vin    :%.2fV\r\n",M5.Axp.GetVinData() * 1.7 /1000);
  M5.Lcd.printf("Iin    :%.2fA\r\n",M5.Axp.GetIinData() * 0.625 /1000);
  M5.Lcd.printf("Vusbin :%.2fV\r\n",GetVusbinData() * 1.7 /1000);
  M5.Lcd.printf("Iusbin :%.2fA\r\n",GetIusbinData() * 0.375 /1000);
  M5.Lcd.printf("VAPS   :%.2fV\r\n", GetVapsData()*1.4/1000);
  M5.Lcd.printf("WL     :%5d\r\n",GetWarningLeve());
  delay(1000);
}
 
uint16_t GetVusbinData(void){
 
    uint16_t vin = 0;
 
    Wire1.beginTransmission(0x34);
    Wire1.write(0x5a);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf = Wire1.read();
 
    Wire1.beginTransmission(0x34);
    Wire1.write(0x5b);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf2 = Wire1.read();
 
    vin = ((buf << 4) + buf2); // V
    return vin;
 
}
 
uint16_t GetIusbinData(void){
 
    uint16_t iin = 0;
 
    Wire1.beginTransmission(0x34);
    Wire1.write(0x5c);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf = Wire1.read();
 
    Wire1.beginTransmission(0x34);
    Wire1.write(0x5d);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf2 = Wire1.read();
 
    iin = ((buf << 4) + buf2); // V
    return iin;
 
}
 
uint16_t GetVapsData(void){
 
    uint16_t vaps = 0;
    Wire1.beginTransmission(0x34);
    Wire1.write(0x7E);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf = Wire1.read();
 
    Wire1.beginTransmission(0x34);
    Wire1.write(0x7F);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf2 = Wire1.read();
     
    vaps = ((uint16_t)(buf << 4) + buf2);
    return vaps;
 
}
 
uint8_t GetWarningLeve(void){
 
    uint16_t vaps = 0;
    Wire1.beginTransmission(0x34);
    Wire1.write(0x47);
    Wire1.endTransmission();
    Wire1.requestFrom(0x34, 1);
    uint8_t buf = Wire1.read();
    return (buf &amp; 0x01);
}

[cepics]

Yes I'm asking exactly this arduino code but for M5Stick GRAY (NOT C)

tnks a lot..

[cepics]

this is my solution:

#include <M5Stack.h>
#include <U8g2lib.h>

uint8_t bat = M5.Power.getBatteryLevel();


U8G2_SH1107_64X128_1_4W_HW_SPI u8g2(U8G2_R1, /* cs=*/ 14, /* dc=*/ 27, /* reset=*/ 33);

void setup(void) {

  M5.begin();

  Wire.begin();

  u8g2.begin();

  Serial.begin(9600);
}

void loop(void) {
  delay(500);
  Batteria();
}


void Batteria() {//
  u8g2.firstPage();
  do {
    if (M5.Power.isCharging()) {
      // DEBUG Serial.println("Battery is charging");
      u8g2.setFont(u8g2_font_battery19_tn);
      u8g2.drawGlyph(2, 20, 48);
      u8g2.setFont(u8g2_font_unifont_t_symbols);
      u8g2.drawGlyph(1, 16, 8623); //fulmine
    } else {
      u8g2.setFont(u8g2_font_battery19_tn);
      u8g2.drawGlyph(2, 20, 48); // VUOTA

      if (bat > 50) {
        u8g2.drawGlyph(2, 20, 49); // una tacca
      }
      if (bat > 100) {
        u8g2.drawGlyph(2, 20, 50); // //due tacche
      }
      if (bat > 150) {
        u8g2.drawGlyph(2, 20, 51); // tre tacche
      }
      if (bat > 200) {
        u8g2.drawGlyph(2, 20, 52); // quattro tacche
      }
      if (bat > 250) {
        u8g2.drawGlyph(2, 20, 53); // cinque tacche
      }
    }

    /// FOR DEBUG/////
    //u8g2.setFont(u8g2_font_7Segments_26x42_mn);
    //u8g2.setCursor(20, 52);
    //u8g2.print(bat);
    //Serial.print(bat);
    //Serial.println(" %");

  } while ( u8g2.nextPage() );
}

right now.....