My MCU CAN Communication is Not working After i generate the new STMCubeMX Code

Jay_Tank · ‎2026-02-10

Hello ST Community,

My MCU Part No. is STM32F103C8T6.
My MCU Firmware Package is STM32Cube FW_F1 V1.8.6 and This Package CAN Communication is Working Fine and When Ever i Change one GPIO Pin and Generate the Code then CAN is Not Working
What is The Problem Behind it ? If Any body Idea About That ?

Thanks In Advance .

Andrew Neil · ‎2026-02-10

Welcome to the forum.

Please give some more details - see: How to write your question to maximize your chances to find a solution

In particular: what board are you using? What IDE? Your CAN setup?

What investigation/testing/debugging have you done to find what goes wrong after you make the change?

Perhaps attach before & after examples.

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.