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STM32G0B1 FDCAN Reset

Nabidev
Associate II

‎2026-05-05 8:10 AM - last edited on ‎2026-05-05 10:00 AM by

Hello,

 

in an earlier post it was suggested to reset the FDCAN for full error recovery using RCC_APBRSTR1.FDCANRST Bit

This bit seems to be global for all FDCAN instances.

Is it correct that full error recovery in one FDCAN instance is not possible without interrupting traffic in the other instance - as all (or both in case of stm32g0b1) instances have to be reset?

 

t

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mƎALLEm
ST Employee

‎2026-05-05 10:00 AM

Hello,

Do you mean a recovery from Bus-Off state?

This is How to recover from Bus-Off state with FDCAN on STM32 MCUs without performing a reset of the peripheral.

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