Hello,
I'm working on a project where we are using the OMAP3530 on a Gumstix Overo to interface to an external device. We will probably have a memory buffer connected to the GPMC interface by way of some programmable logic. I was wondering if it is possible to trigger a DMA request from the external device over the GPMC interface, or if I would have to have the Cortex A8 trigger the DMA request via an external interrupt or a timer interrupt. Also, when looking over the documentation, it seems as though the external interrupt requests are on GPIO 1-6, but it does not look like these are available on the external connectors of the Overo. Is it possible to use another pin to trigger this, or should I use a timer to poll the device to see if it is ready for the DMA request?
Thanks