TypeError: 'id' argument required

[Robotayylien]

When I try to run the simple test I am getting this error:

♦Traceback (most recent call last): File "", line 5, in TypeError: 'id' argument required

[Robotayylien]

when I add id=0 to i2c I get this error

  File "<stdin>", line 6, in <module>
  File "mpu9250.py", line 56, in __init__
  File "ak8963.py", line 76, in __init__
  File "ak8963.py", line 139, in whoami
  File "ak8963.py", line 197, in _register_char
OSError: [Errno 5] EIO

[pkoprov]

id is the bus # of I2C you are connected to. So, if you are connected to pins 0 and 1 - this is bus 1 and id - 0. Check the GPIO of your board

[Robotayylien]

Yeah I have it set to id 0 for pin 0 and 1, using the pi pico board, if i did change the id to 1 with the same pins I get a ValueError: bad SCL pin

[JoelTech43]

@Robotayylien I ran into a similar issue where if I used id=1 I got ValueError: bad SCL pin and if I put id=0 I got OSError. I was using an lcd screen and found that I needed to use id=0 but I needed to change the I2C address. I had the address for my lcd set to 0x27 when I needed it set to 0x3f and changing this solved it.

I found the address using this code:

i2c = I2C(0, sda=Pin(8), scl=Pin(9), freq=400000)
I2C_ADDR = i2c.scan()[0]
print(hex(I2C_ADDR)) ```

Obviously you need to change the pin numbers in line 2!

I don't know if this will help!

[RuudKapteijn]

The id parameter can be ommitted. Solved the issue for me on ESP32, MicroPython, MPU9250.

[tuupola]

Neither this library nor the examples have code which includes the id in I2C initialisation. Looking at MicroPython I2C documentation passing id is optional and the value depends on the board you are using.

[RuudKapteijn]

i2c = I2C(0, sda=Pin(8), scl=Pin(9), freq=400000)

Given de constructor definition I'd assume the first 0 in the constructor call of Robotayylien above is the id parameter. My suggestion is to omit this zero. It did fix an error in my configuration. Do I miss something?