I2C5 in the CM4 context giving I2C_WaitOnTXISFlagUntilTimeout

[PVaaz.1]

Hello

Attached is my i2c ioc file and I have connected an ADXL sensor to the stm32mp1 on its Arduino connector(I2C5). ( address: 3A, Chip id value : E5, Chip ID read register : 0x00)

I am trying to read this chip id but getting an error at the below line always

 if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)

Can you please tell me what's wrong in the code or ioc file?

attached is my main.c and ioc file as well.

Do I need any changes I the device tree file on the A7 side?

Thanks !,

P

[Olivier GALLIEN]

Hi @PVaaz.1​ ,

Sorry to come quite late in this thread.

Where did you stand today ?

Didn't dig into code yet but as a first comment i can answer yes to question "Do I need any changes I the device tree file on the A7 side?"

You have to care i2C5 ( and maybe other peripherals) properly assigned on M4 side.

Olivier

[PVaaz.1]

Hello @Community member​ ,

Thanks it got resolved,

CubeMX generates the I2C hal msp code with below I2C configuration by default :

PD1   ------> I2C5_SCL

  PZ1   ------> I2C5_SDA

but in actuality works with PA11, and PA12 respectively.

I forget to mention in am using only CM4 with engineering mode.

I think in production as well this holds true and I don't need to change in the device tree change settings in A7 side

Thanks !

Regards,

R