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TMS320F28075: EPass bit in CAN_ES register

Demis Biscaro
Expert 1145 points
Part Number: TMS320F28075


Hi,

in TRM I read that the events WakeUpPnd, RxOk, TxOk and LEC in CAN_ES register belong to the status change interrupt. Moreover the events PER, BOff and EWarn belong to error interrupt.

However I don't find information about EPass bit. Does EPass belong to error interrupt?

Thank you.

Best regards,

Demis

  • 0
    TI__Guru* 95315 points

    Demis,

    I found the following statement in the spec: A change of bit EPass will not generate an Interrupt. This has already been added in the documentation. The next revision of the TRM will reflect this.

  • 0 in reply to Hareesh Janakiraman
    Expert 1145 points
    Ok, thank you Hareesh.
    However it sounds pretty odd that EPass doesn't generate an interrupt while Ewarn and BOff do. This means that I can use an interrupt to know if CAN module is in Warning or Bus-off state but I've to monitor CAN_ES register by polling to verify if it is in Passive state. So the interrupt seems rather useless because I can monitor all the bits (EWarn, BOff and EPass) through the polling...