TDA2SG: tda2xx play audio with mcasp interface

user3792633

Part Number: TDA2SG

hi all,

I'm working on tda2xx VisionSDK 02_10_00.I want play my own DIY audio(a short audio) through mcasp interface.My way is follow StartWare_01_06_00_16\example\mcasp_sinetone example,and replace the _sinewavePattern[ ] array with my own audio which is converted to WAV format from MP3.But, the headphone always get noise.Is it anything wrong there?Please give me support,thanks!

Jer.

over 9 years ago

0 Yordan Kamenov over 9 years ago

TI__Mastermind 42515 points

Hi,

I have forwarded your question to StarterWare experts to comment.

Regards,
Yordan

0 Prasad Konnur over 9 years ago

TI__Expert 6065 points

Hi,

Are you able to get the sinetone with the pattern defined in the example?

Can you check if you are getting the edma isr periodically?

In vsdk, edma is managed by edma3lld package and you should get the channel handle from this driver and configure for mcasp Tx event.

Regards,
Prasad

0 user3792633 over 9 years ago in reply to Prasad Konnur

Intellectual 595 points

hi Prasad,
Thanks for your reply.
Yes, i able to get the sinetone with the exmple.And i'm sure emda running well.May be it's the problem of my own DIY audio.
The way that i play my own audio is correct or not?
And,can you explain how to create an audio pattern like "ding ding ding ..."?
thanks.
Jer.

0 user3792633 over 9 years ago in reply to Prasad Konnur

Intellectual 595 points

hi,
I still have no idea to complete the problem which i mentioned.Please let me know if you have others new thought.
thanks.

0 Yordan Kamenov over 9 years ago in reply to user3792633

TI__Mastermind 42515 points

Hi Jer,

do you have any progress on thiss issue?

Can you check if the length of your audio matches the time for which it gets send (i.e. it is not sent too fast and thus becomes unrecognizable)?
Also if you look at _sineWavePattern[] array the data there represents a single sine wave, you can experiment with having several sine waves separated with zeroes.

Regards,
Yordan

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TDA2SG: tda2xx play audio with mcasp interface