voip in omapl137/tms 320c6747 - examples please

tharangini chinnadurai

Other Parts Discussed in Thread: TMS320C6747, CCSTUDIO, OMAP-L137

Hi,

My application is to implement voip in omapl137/tms320c6747.

For this I need an example that would combine NDK (that sends packets out using UDP protocol) and audio pass through (using ping and pong buffers). I found the examples what I exactly need in http://www.ti.com/lit/an/spraax4/spraax4.pdf, with examples in C:\IW64x+\solutions_ti\lab6B. I am looking for a similar example for C6747. Could you please send some links which points to the closest examples? I already have NDK example in C:\CCStudio_v3.3\ndk_2_0_0_0\packages\ti\ndk\example\network\cfgdemo and audio passthrough example in C:\CCStudio_v3.3\boards\evmc6747_v1\dsp\tests\aic3106. But the audio example given in the previous line doesnot use ping pong buffering. Also I need an example that combines both NDK and audio pass through with ping pong buffering.

Thanks for your help.

over 13 years ago

0 tharangini chinnadurai over 13 years ago

Intellectual 980 points

I meant, " I found the examples what I exactly need in http://www.ti.com/lit/an/spraax4/spraax4.pdf, with examples in C:\IW64x+\solutions_ti\lab6B" - in the sense, the above examples are for c64x and I am looking for similar examples in c6747.

0 Joe Coombs over 13 years ago in reply to tharangini chinnadurai

TI__Expert 8890 points

tharangini,

I'm not aware of any example applications that combine NDK usage with audio passthru on C6747/OMAP-L137, but there are several examples demonstrating audio passthu with ping pong buffering. One simple example that uses BSL-style code to control the McASP peripheral can be downloaded here:

http://software-dl.ti.com/dsps/dsps_public_sw/c6000/web/c6747_audio_edma_app/latest/index_FDS.html

Note that this application uses DSP/BIOS 5.41. It also uses EDMA to split the audio data in separate left and right buffers for easy processing.

Alternatively, you can use the PSP drivers, which work with either DSP/BIOS 5.41 or SYS/BIOS 6. The PSP installation comes with many drivers and examples, including an audio passthru example using McASP and EDMA. You can download the PSP release for C6747/OMAP-L137 from the following location:

http://software-dl.ti.com/dsps/dsps_public_sw/psp/BIOSPSP/index.html

I hope that these examples will be helpful to you. Please take a look and let me know if you have any questions about them.

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voip in omapl137/tms 320c6747 - examples please