Ping Pong Example not using CSL or DSP/BIOS?

Mike,

I don't have a ping pong example, but if you look at my posting towards the end of this thread: http://e2e.ti.com/support/dsp/tms320c5000_power-efficient_dsps/f/110/t/158443.aspx#580739 you'll find a zip file with a single-buffer example using the DMA to collect codec samples on the eZdsp5515.  It might make starting point.

(Notice that James reported difficuties, but since he hasn't replied to my final posting its not clear if he solved them.)

Peter

Peter,

Thanks for the suggestion. Very nicely written code (lots of helpful comments..:). I played with the code for a bit but couldn't get a DMA transfer to happen. You might want to check the following:

//    DMA0_CH0_TC_MSW = 0x00C0;               //  Fixed source address
    DMA0_CH0_TC_MSW = 0x0080;               //  Fixed source address

Unfortunately, I really need a ping pong example.

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MARK_M:  CAN YOU GUYS PLEASE COME UP WITH A REGISTER-BASED PING PONG EXAMPLE? 

This must be THE most common application for the C55xx family.

I am very surprised one doesn't exist.

Well spotted Mike - it works with SRAMODE = 3, but I guess that's a coincidence because its a reserved value.  Much better to use 2 as you suggest.

Thanks

Peter,

FYI, I did actually get the DMA transfer to work. Thanks again.