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TDA4VM: Udma_ringDequeueRaw fails

Marina Lenza
Prodigy 100 points
Part Number: TDA4VM

Hello TI,

I am trying the example for UDMA memory copy available in the PDK, udma_memcpy_test.c, on MCU R5 and the transfer is not being completed, there is no update on the destination buffer and the completion queue is always empty (Udma_ringDequeueRaw returns UDMA_ETIMEOUT).

Is this an issue with the channel? And how can I solve it?

Thank you, 

Marina

  • 0
    TI__Mastermind 42135 points

    Hi Marina,

    Are you seeing this issue with out of box example or did you make any changes in that?
    Also, can you please share the SDK version you are using?

    Regards,
    Parth

  • 0 in reply to Parth Nagpal
    Prodigy 100 points

    Hi Parth,

    I am seeing in the out of box example in pooling mode (UDMA_TEST_INTR = 0) .

    The SDK version is 8.02.00.21

    Regards,

    Marina

  • 0 in reply to Marina Lenza
    TI__Guru**** 479035 points

    Hi Marina,

    Can you please check if this example is supported on mcu1_0? which navss is used in this case? 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Prodigy 100 points

    Hi Brijesh,

    MCU NAVSS is being used (instId = UDMA_INST_ID_MCU_0). The example works until the function Udma_ringQueueRaw, the forward queue occupancy increases, but the completion queue is alway empty.

    Regards,

    Marina

  • 0 in reply to Marina Lenza
    TI__Guru**** 479035 points

    Hi Marina,

    Is the same example working fine on other cores? I had run it long time back on mcu2_0. Can you please check if channel is getting enabled? Because if it is not, it will not dequeue element from the forward queue. 

    Regards,

    Brijesh 

  • 0 in reply to Brijesh Jadav
    Prodigy 100 points

    Hi Brijesh,

    The channel is being enabled.

    I did not test in other cores, our intention is to adapt this example to be used in MCU R5.

    Regards,

    Marina

  • 0 in reply to Marina Lenza
    TI__Guru**** 479035 points

    Hi Marina,

    I just tried UDMA memcpy example on mcu1_0 from SDK8.6. I am able to run it fine. Please find below console log from this application run. I dont see issue in ringDequeueRaw. Is this is same udma_memcpy_testapp_freertos example you are using? 

    UDMA memcpy application started...
UDMA App memcpy test statistics:
Completed packet count       : 100
Completed payload byte count : 102400
Started byte count           : 102400
UDMA App memcpy test statistics:
Completed packet count       : 200
Completed payload byte count : 204800
Started byte count           : 204800
UDMA App memcpy test statistics:
Completed packet count       : 300
Completed payload byte count : 307200
Started byte count           : 307200
UDMA App memcpy test statistics:
Completed packet count       : 400
Completed payload byte count : 409600
Started byte count           : 409600
UDMA App memcpy test statistics:
Completed packet count       : 500
Completed payload byte count : 512000
Started byte count           : 512000
UDMA App memcpy test statistics:
Completed packet count       : 600
Completed payload byte count : 614400
Started byte count           : 614400
UDMA App memcpy test statistics:
Completed packet count       : 700
Completed payload byte count : 716800
Started byte count           : 716800
UDMA App memcpy test statistics:
Completed packet count       : 800
Completed payload byte count : 819200
Started byte count           : 819200
UDMA App memcpy test statistics:
Completed packet count       : 900
Completed payload byte count : 921600
Started byte count           : 921600
UDMA App memcpy test statistics:
Completed packet count       : 1000
Completed payload byte count : 1024000
Started byte count           : 1024000
UDMA memcpy using TR15 block copy Passed!!
All tests have passed!!

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Prodigy 100 points

    Hello Brijesh,

    it worked with the example in PDK 8.6.

    Thank you and Regards,

    Marina