I2C on Pytrack2 pyport

[lolloz]

Hi all,

I connected a I2C sensor to the pyport on pytrack2. Than my script is:

"from machine import I2C, Pin

i2c = I2C(0, pins=(SDA,SCL))
i2c.init(I2C.MASTER, baudrate=115000)
i2c.scan()"

Anyone can help me about how can I refer to SDA and SCL on pyport? I don't find in any place which Pins I have to indicate.

thank you for any help.

[Gijs]

Hi,
The pin numbers are P22 for SDA, and P21 for SCL
They are indicated (maybe in an obscure way) here: https://docs.pycom.io/datasheets/expansionboards/pysense2/ in the pinout

[lolloz]

@Gijs Hi thank you so much for your answer. I try to access I2C using P22 and P21 but I got "bus error". Do you have success using I2C on sensor port with these Pins?

[lolloz]

@Gijs P21 and P22 seems for gps and accelerometer

[jcaron]

@lolloz I2C is a shared bus with one master and potentially many slaves. If you use other devices on that bus, you need to re-use the same I2C device.

[lolloz]

@jcaron thank you for your replay. my question is: have you ever tried to access a sensor connected to pyport on pytrack2 and you success on this? My fear is that thare is some issue on this port.