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FDCAN tx & rx FIFO size

Kwame
Associate II

Is there a way to set the FDCAN TX and RX FIFO sizes for STM32H7R7 in CubeIDE?

I snooped around and found a list of macros that are responsible for determining the FDCAN RAM size in the stm32h7rsxx_hal_fdcan.c. Do I just modify these values to set the FIFO sizes?

Screenshot 2025-09-13 at 12.44.55 AM.png

Here is my configuration parameters. 

Screenshot 2025-09-13 at 12.36.12 AM.png

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