CAN is not working in loopback mode on STM32F469I DISCO board

[jrupesh90_]

I am trying to interface CAN communication in loopback mode in STM32F469I DISCO but it is not working.

[mƎALLEm]

Hello @jrupesh90_  and welcome to the community.

You need to describe what kind of issue you are facing.

You can refer to this link on how to post a thread.

You need to share your project including the ioc file.

[jrupesh90_]

I am trying to interface CAN in loopback mode in STM32F469I DISCO board but my code is not working. Can you provide me some code snippets with respect to board.

[mƎALLEm]

There is no CAN examples available for STM32F469I DISCO board but you can inspire from the example provided in the STM32CubeF4 in github from this link for STM32469I_EVAL board (the same microcontroller, but you need to check the RCC and the CAN GPIO pins configurations):

https://github.com/STMicroelectronics/STM32CubeF4/tree/master/Projects/STM32469I_EVAL/Examples/CAN/CAN_Loopback

But you didn't share your code to look at it.

Two questions: 

Did you enable and configure correctly the filters.

Did you configure the internal pull-up resistor for CAN_Rx pin ? if not it needs to be configured.