A problem of using McASP0 on DM6467

Jiawei Dong

I want to use Serializer 0 and Serializer 1 as a receiver at the same time. when I use any one of the Serializers as a receiver, it is OK, and I can capture the audio. But when I use it both, it can not work. I want to capture four channels of audio, what could I do?

over 14 years ago

0 Claudio Filipponi over 14 years ago

Intellectual 680 points

Hello, mcasp driver currently doesn't support multiple serializer in rx_mode.

You have to modify driver properly (you will need an AB sync edma transfer ...)

regards

Claudio

0 Jiawei Dong over 14 years ago in reply to Claudio Filipponi

Prodigy 115 points

Hi,Thank you for your kindly replay. But what do you mean "AB sync edma transfer"? Does it mean the "EDMA Implementation of Scenario 2" which was described in the McASP datasheet. "Scenario 2" use two dma events to receive.

Thank you again.

0 Jiawei Dong over 14 years ago in reply to Jiawei Dong

Prodigy 115 points

Oh，I know. "AB sync" is a type of edma transfer. Thank you again.

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A problem of using McASP0 on DM6467