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about dm355 ipipe continuous mode？

ChengM
Prodigy 80 points

Hi

   we using dm355 ipipe with One-Shot mode, everything work is fine.

   but for reduce delay and bandwidth, need use continuous mode

   we change ccdc param SYNCEN.VDHDEN = 1 , and IPIPEIF's input source is CCDC，

   I printk debug info in IPIPE_INT1_SDR isr, when  I set IPIPE_MODE = 1 (One-Shot mode), the isr can be occur but once

    but set IPIPE_MODE = 0 (continuous  mode), the isr never entry

    Anybody can help me?  thx

 

Regards

 

 

  • 0
    TI__Mastermind 19985 points

    Hi,

    My 2 cents - I believe the problem is that in continuous mode, VDINTx ISRs are used and buffer switching happens in those ISRs. IPIPE_INT1_SDR isr might not be connected in continuous mode. Can you confirm if your VDINTx ISR is coming or not?

    Regards,

    Anshuman

    PS: Please mark this post as verified, if you think it has answered your question. Thanks.

  • 0 in reply to Anshuman Saxena
    Prodigy 80 points

    Thx Anshuman

        I make VDINT0 and VDINT1 isr doing nothing except generate a pulse for debug, there is pulses output by oscilloscope capture.

    It look like CCDC capture is work right.

  • 0 in reply to ChengM
    TI__Mastermind 19985 points

    Hi ChengM,

    Good that you could proceed further and get CCDC to work correctly. If you think your question is answered and there is no more help needed, could you please close this thread by marking the answer as verified. This way other users can refer to verified answer for future references.

    Regards,

    Anshuman