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AWRL6432: Failed to run CAN in APP if adding CAN operation in SBL

Part Number: AWRL6432

Hi,

My customer added CAN operation (polling mode) in SBL to TX/RX CAN message but found the CAN can't work ok in APP.

They did a lot of test and found if they added 20s delay after Enable Clock for FECSS, CAN works ok in APP.

I suggested customer to add MCAN_txBufCancellationReq before WDT reset (without 20s delay) in SBL, but still failed.

Would you pls kindly advise what may be missed in SBL for MCAN deinit? 

Thanks,

Chris