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TI Home » TI E2E Community » Support Forums » Digital Signal Processors (DSP) » C6000 Single Core DSP » C67x Single Core DSP Forum » USB RX problem
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USB RX problem

USB RX problem

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Kurt Jensen
Posted by Kurt Jensen
on Aug 07 2012 09:00 AM
Genius4860 points

According to INTSRCR (0x00080200) I get an RX interrupt on EP1.  But sometimes when I check the endpoint status, PERI_RXCSR, there are no bits set. According to the PC, a packet was sent, but, since PERI_RXCSR is zero, I do not receive the packet.

Any idea how this could be happening?

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  • RandyP
    Posted by RandyP
    on Aug 18 2012 07:26 AM
    Guru60170 points

    Kurt,

    Which DSP device are you using?

    Are you running this on one of our EVM / DSK / Experimenter boards?

    What are you using for drivers for the USB port? And which version?

    Regards,
    RandyP

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  • Kurt Jensen
    Posted by Kurt Jensen
    on Aug 23 2012 15:39 PM
    Genius4860 points

    1) c6748

    2) no, I am running my hardware.

    3) using c6748 StarterWare 1.20.02.02 librariwa to handle the USB

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  • RandyP
    Posted by RandyP
    on Aug 24 2012 08:26 AM
    Verified Answer
    Verified by Kurt Jensen
    Guru60170 points

    If it works sometimes, then your software flow has some validation. I would try to get a correlation between the packet sent and the failure-to-receive. Look for noise and levels on your clocks and power supplies, and on the USB signals themselves.

    Is "librariwa" two words that are pushed together?

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  • Kurt Jensen
    Posted by Kurt Jensen
    on Aug 24 2012 08:34 AM
    Genius4860 points

    3) using c6748 StarterWare 1.20.02.02 libraries to handle the USB

    "wa" == ("es" << one key)...

    Thank you.

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  • RandyP
    Posted by RandyP
    on Aug 24 2012 09:50 AM
    Guru60170 points

    Is your question really answered?

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