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TMS320C6416T: EDMA Controller

Waseem Ajmal
Intellectual 310 points
Part Number: TMS320C6416T

Hello,

I am using TMS320C6416T. I am using EDMA controller to transmit two different message formats. Firstly, I am transmitting a message format of 9 bytes and then extending the buffer size to 30 bytes. When I reconfigure the EDMA buffer size from 9 bytes to 30 bytes, it does so. But, when I again reconfigure the EDMA buffer size to 9 bytes, it doesn't decrease it so and stays at 30 bytes. After reconfiguration to 9 bytes from 30 bytes, the interrupt generates only when 30 bytes are received. I think it doesn't reconfigure again to 9 bytes. I have been able to configure the EDMA using EDMA_FSETH(hedma,CNT,ELECNT,BUFFSIZE1) and EDMA_FSETH(hedma,CNT,ELECNT,BUFFSIZE2), where BUFFSIZE1 is 9bytes and BUFFSIZE2 is 30 bytes. 

Thank you. 

  • 0
    TI__Guru* 93065 points

    Hello Waseem,

    Unfortunately TMS320C6416T has no design support as per the product page. You might find more information by searching for old e2e posts (I like to use a google site search like "site:e2e.ti.com TMS320C6416T EDMA buffer"). The product page might have more information. You could also take a look at the EDMA controller reference guide:

    https://www.ti.com/lit/spru234c

    Regards,

    Nick