AnsweredAssumed Answered

PPI issue

Question asked by Marko on Feb 23, 2010
Latest reply on Jan 14, 2016 by tamirci

I have a board with BF534 processor and Image sensor Micron MT9V024. Images are brought to the SDRAM over the PPI interface and processed during the time between consecutive frames.

I have tried to start processing right after I received 3 lines of the image , but PPI overflow error occurred (PPI STATUS = 0x1000).

If I do processing after all of 480 lines of the image are stored then there is no overflow error.

I suspect that the External Bus interface get jammed as the PPI is storing the data to the SDRAM and Core is accessing data from the SDRAM at the same time.

Do you have the idea how to avoid this problem and if it is possible to do?



Marko Vico