AM2732: AM2732+AWR2243 OOB Demo EDMA trigger for ADC raw data migration

Ken Zhang

Part Number: AM2732
Other Parts Discussed in Thread: AWR2243, , AWR2944

Hi Experts

In AM2732+AWR2243 OOB Demo of mcuplus SDK4.2.0.2,

when the AM2732 processor gets chirp data, It would trigger an EDMA for ADC raw data transferring so that it can be processed by HWA. But I am not clear how this EDMA is triggered.

We do not have an ADC buffer to generate an ADC capture complete event to trigger EDMA like we do in AWR2944.

Could you pls elaborate or point out the code how the EDMA is triggered?

Thanks

Ken

over 3 years ago

0 Akshay Kumar Chandrasekaran over 3 years ago

TI__Expert 8275 points

Hi Ken,

In AM2732+AWR2243 demo, we get the ADC data into HWA using memory CSI2 interrupt from AWR2243 or via LVDS streaming mode . Therefore no EDMA is required to bring in ADC data to HWA memory. You can possibly refer CSI2 reference in TRM to get a better understanding of it.

Let me know if you have any questions.

Thanks and Regards,

Akshay.

0 Ken Zhang over 3 years ago in reply to Akshay Kumar Chandrasekaran

TI__Expert 3435 points

Get it.

If LVDS streaming is not enabled, the M0 and M1 of HWA is set as ping pong buffer of CSIA RX, and thus EDMA is not required, and the device will maintain and refresh ping pong buffer automatically, right?

+1 Akshay Kumar Chandrasekaran over 3 years ago in reply to Ken Zhang

TI__Expert 8275 points

Yes absolutely right Ken!

Let us know if you have any questions.

Thanks and Regards,

Akshay.

0 Ken Zhang over 3 years ago in reply to Akshay Kumar Chandrasekaran

TI__Expert 3435 points

Hi Akshay

Thank you for your help!

Ken

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AM2732: AM2732+AWR2243 OOB Demo EDMA trigger for ADC raw data migration