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TMS320F28388D: External interrupt on M4

Emma Wang
Expert 5420 points

Part Number: TMS320F28388D

Hi expert,

reading through TRM Table 41-5. NVIC Interrupt Mapping, I did not find an external interrupt.

But my customer did need such function to their system.

could you kindly point out whether we can add one using software or not?

BR

Emma

  • 0
    TI__Guru** 116971 points

    Hi Emma,

    Since M4 is part of connectivity manager subsystem which is mainly used for communication, general external interrupt is not available for M4. You could use external interrupt on CPU1 (C28x) and then have CPU1 ISR generate IPC interrupt to M4 based on that. 

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    TI__Expert 5420 points

    Vivek,

    Thanks for your reply. my customer just did as this, however,the speed is below customer's requirement.

    As mentioned in this thread:

    could you kindly tell me whether we can do some changes and change a reserved ISR to external ISR in M4 core.

    BR

    Emma

  • 0 in reply to Emma Wang
    TI__Guru** 116971 points

    Hi Emma,

    That is a design change and right now we do not have a plan for new revision of this device. The post you mention is for data transfer where as here we are talking about external interrupt. CM has communication module which can be used to receive the data directly from external host. Right ?

    Regards,

    Vivek Singh