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Continous data transfer to GPIO with DMA SPC56EL

Question asked by Patrik Schantl on Feb 3, 2015
Latest reply on Feb 5, 2015 by Patrik Schantl

I would like to use DMA to control the states of some GPIOs. The software should write the entries of an array to the PGPDO[0] register. For that case, I wrote a small demo program. The outputArray is uint16_t and contains 256 elements. Each element stands for a state of 8 GPIO pins. The software should write these elements circular to the PGPDO[0] register, but it doesn´t work. The configuration looks like that:

Can anybody tell me what I have to change in my configuration when I want the DMA transfer to run continuously as fast as possible?

Best regards,