RTOS/AM5728: VIP/VPDMA

wonjune kim

Intellectual 270 points

Part Number: AM5728

Tool/software: TI-RTOS

hello.

The board I'm using is the AM572x Evaluation Module (TMDSEVM572X), and the downloaded RTOS SDK version is 5.02.

I have a question about the VIP module.

I am taking one camera data using the example provided by TI.
The setting to receive camera data is VIP2 - Slice0 - Port A (1 stream, 1 channel, 16bit).

The camera data is stored in one buffer and output to the LCD.
I wonder if it can be stored in two buffers at the same time.

I wonder if the data received from one camera can be stored in two buffers simultaneously via VPDMA.
(I do not think of storing camera data in one buffer and then moving it to the second buffer via DMA.)

I wonder if this is possible, and I would appreciate it if you let me know how to do it.
Also, let me know if there is a related example in sdk.

please answer me.
Thank you.

over 7 years ago

0 lding over 7 years ago

TI__Guru* 95265 points

Hi,

What is the usage case? Why you need 2 identical buffers via VPDMA?

Regards, Eric

0 wonjune kim over 7 years ago in reply to lding

Intellectual 270 points

Hello, Eric.
Thank you for reply.

I use one buffer for LCD output and the other one for image processing.

A simple idea is to receive the data via VPDMA and then store it in the desired buffer via DMA.
However, I thought this method was difficult to handle in real time.

Is there a suitable method for this use case?

Thank you very much.

0 lding over 7 years ago in reply to wonjune kim

TI__Guru* 95265 points

Hi,

I checked with the dev team, there is no way for VPDMA to move the data to two buffers at the same time. After VPDMA moving the data into a buffer, you may consider using an EDMA to copy the data to another buffer again for this purpose.

Regards, Eric

Processors

Processors forum

RTOS/AM5728: VIP/VPDMA