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Tee
Tee
Associate
July 27, 2023
Question

STM32 CAN bus accepts nonmatching addresses

Hey there!

I am testing the communication between 2 STM32H7 custom-made boards using CAN bus (chip: SN65HVD230).

My issue is that both ends communicate (Transmit and receive) despite the configuration filter IDs (1 & 2) I am setting. I also tried to block nonmatching addresses using this function: HAL_FDCAN_ConfigGlobalFilter, but it blocks reception from all addresses.

Any ideas?

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    1 reply

    Sarra.S
    ST Employee
    August 1, 2023

    Hello @Tee, 

    Could you share you Rx filter configuration and the input parameters of the global filter configuration

    Thank you!

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