@amudon
sudo apt-update は成功しますか?

Hello @kimtommy

hmm, works for me. Tested both: power off and deep sleep.

I created an example which might help you. You can find it in the UIFlow2 Project Zone: M5CoreInk_PowerOff_DeepSleep_Test_UIFlow2.3.2

Thanks
Felix

Hello @GermanSheepDog

below is an alternative function which works for me too:

#define PI4IOE5V6408_ADDR 0x43
#define OUTPUT_REG 0x05

void my_set_backlight(bool o) {
  uint8_t data = M5.In_I2C.readRegister8(PI4IOE5V6408_ADDR, OUTPUT_REG, 200000);
  if(o == true) data |= 0b10000000;
  else data &= ~0b10000000;
  M5.In_I2C.writeRegister8(PI4IOE5V6408_ADDR, OUTPUT_REG, data, 200000);
}

Thanks
Felix

Hello @GermanSheepDog

your my_set_backlight() function works for me and my_set_backlight(true) turns the backlight off (inverted logic).

void my_set_backlight(bool o) {
  PI4IOE5V6408_Class p;
  // false input, true output
  p.setDirection(7, true);
  // false off, true on ?
  p.digitalWrite(7, o);
}
void setup()
{
  auto cfg = M5.config();
  cfg.serial_baudrate = 115200;
  M5.begin(cfg);
  M5StamPLC.begin();
}
void loop()
{
  M5.update();
  if(M5.BtnA.wasClicked() == true)
  {
    Serial.println("BtnA clicked - backlight on");
    my_set_backlight(false);
  }
  if(M5.BtnC.wasClicked() == true)
  {
    Serial.println("BtnC clicked - backlight off");
    my_set_backlight(true);
  }
}

Thanks
Felix

P.S. the AI generated code did not work for me.

Hello @clydeps

I don't know the pitch of the connector. However my M5Tab5 came with a matching cable. Maybe double-check your box?

Thanks
Felix

@SparklesForever
what is "yellow M5 little block sensor" specified?

@maby2001
If you use a Roller485, you can connect directly to PortA of the Core2 to provide power + I2C control at the same time.

Yes, you can use the 485 bus to provide power and I2C control at the same time.

@Jomac Are you putting the Cardputer into Firmware mode but holding G0 while plugging in?

@oracle_sod I think this may be connected to an error I found.
set up a basic "Hello world" example and check the terminal. I was getting MQTT server errors with basic code because M5Stack are using MQTT for pushing programs from the UIFLow server to the cores.

@zhouyousong said in cardputer use built in speaker to play wav file error:

Reply

hmmm i think that will be bit of hard, but we will keep trying it