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How to synchronize EDMA3 with GPIO in AM3894 ?

Min Chul KIM
Prodigy 140 points
Other Parts Discussed in Thread: AM3894

Hello, TI E2E.
First, we want to say : Thank you for reading.

- and -

We wish to use synchronize GPIO interrupt in EDMA3 channels.
but I can't find any GPIO interrupt channel in EDAM3 channels reference.

Following document of "AM3894 Technical Manual(SPRUGX7)", in page Figure 5-36 : 
To make working EMDA channel, it is configured in GPIO interrupt.

 

And we request:

 1. Event48 explained channel of TIMER4. If we have to use Event48, what we need to do?
 2. Is there any sample source code to synchronize configuration of GPIO for mapping EDMA3.

Regards.

 

  • 0
    TI__Expert 6065 points

    Hello,

    I have few questions here. Are you using the EDMA3 LLD for programming EDMA?

    From the above figure it looks like the Hardware event triggers a transfer on the channel 48 of EDMA. The PaRAM set  corresponding to this channel should be set.

    If you are looking for How to program the channel 48 and chain it to another channel (channel 8 shown above) you can refer to the examples provided in the EDMA3 LLD.

    Regards,
    Prasad