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Toggle timing of the double buffer in i.MX53 IPU

Question asked by torus1000 on Nov 28, 2016
Latest reply on Nov 28, 2016 by igorpadykov

Hi,

 

I have a question about double buffering feature of i.MX53 IPU.

I know the FSU automatically toggles the DMA_CH_CUR_BUF_# to point on the correct buffer(EBA0 or EBA1) to be used by the channel.

However I would like to toggle it manually by using IPU_CH_BUFx_RDYx register when CH0 transfer done followed by IPU SYNC interrupt(IRQ=11) requested.

 

In such case when actual toggle will happen? It will switch immediately or wait something?

 

Can anyone help me? I want to confirm it for the safe screenshot feature.

 

Thanks.

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