I´m working with an STM32F4 kit + STM32F4DIS-LCD + STM32F4DIS-CAM and I´m trying to use DMA to transfer data from LCD Display to Discovery memory RAM. Actually, I´ve achieved partially this duty using the functions available in OV9655_Camera Camera example software, but I'm having some issues that i can´t solve by myself.
To test the DMA transfer I copied a repeated pattern of data on LCD memory to be DMA transfered after, but I've noticed that some data copied in Discovery RAM are repeated. The question is which could be the reasons to this kind of behaviour, because there is none operation in course while the DMA transfer is being done.
I would really appreciate your help.
Best regards.
Eduardo