AWR2944: Why do we wait for HWA done interrupt and EDMA done interrupt at the same time.

Ken Zhang

Expert 3375 points

Part Number: AWR2944

Hi Experts

In AWR2944 rangeprocDDMA DPU, DPU_DopplerProcHWA_process function.

Why do we put 2 semaphores waiting for HWA done interrupt and EDMA done interrupt at the same time?

If EDMA is done, HWA is already done for sure. Single semaphore is sufficient here. Is my understanding correct?

Thanks

Ken

over 1 year ago

+1 Kaushik Gowda over 1 year ago

TI__Mastermind 20605 points

Hi Ken,

Your understanding here is correct. The EDMA done will be raised only after the HWA done is complete and pending on the first interrupt is not exactly mandatory. In this case, it looks like it was done for the sake of completeness as ease of debug. Either way, let me once check internally if there was any other reason for this and update the same here if there is any.

Regards,

Kaushik

0 Ken Zhang over 1 year ago in reply to Kaushik Gowda

TI__Expert 3375 points

Hi Kaushik

Thanks for your detailed confirmation!

Ken

Sensors

Sensors forum

AWR2944: Why do we wait for HWA done interrupt and EDMA done interrupt at the same time.