CC1312R: I2S and DMA

David Jones

Intellectual 820 points

Part Number: CC1312R
Other Parts Discussed in Thread: SYSCONFIG

Is the CC1312 able to run the I2S from DMA while running the Stack 15.4 firmware?

Kind Regards

David

over 3 years ago

+1 Marie H over 3 years ago

TI__Guru* 82311 points

Hi David,

Yes this should not impact TI 15.4-Stack operation (unless you are running very long transfers).

Cheers,

Marie H

0 David Jones over 3 years ago in reply to Marie H

Intellectual 820 points

Please see attached still a problem

David

0 Marie H over 3 years ago in reply to David Jones

TI__Guru* 82311 points

Hi David,

In the example, the DMA is used for the UART. UART is only used for CUI/display, so if you remove this functionality you can use the DMA for something else.

Cheers,

Marie H

0 Dinkar Patel over 3 years ago in reply to Marie H

Prodigy 205 points

Hello Marie,

As per your suggestion we remove UART and add I2S in that syscfg file but DMA is still reserved. Check screenshots below.

Additionally we check in syscfg GUI for UART and I2S. There is a DMA option is available in UART part but no DMA option in I2S part. check below screenshot.

Please suggest us that How to use DMA for I2S may help to get faster resolution.

Thanks,
Dinkar

0 Marie H over 3 years ago in reply to Dinkar Patel

TI__Guru* 82311 points

Hi Dinkar,

Sorry about the confusion. The I2S has its own DMA as part of the module. You can read about it in the Technical Reference manual.

The DMA described by SysConfig is the uDMA which also has a chapter in the TRM. It's possible to use this with I2S but it's not currently supported by the I2S driver (or SysConfig).

I would recommend you to use the internal DMA in I2S.

https://www.ti.com/lit/swcu185

Cheers,

Marie H

0 David Jones over 3 years ago in reply to Marie H

Intellectual 820 points

Thanks Marie

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CC1312R: I2S and DMA