I'm currently working on driver design in Windows CE using OSK5912 development board together with Mistral QVGA LCD module. The driver will map and control the input and output of the GPIO pins. The problem is that I have difficulty in mapping the GPIO registers to the OS. When I tried to map it using the given physical address i.e 0xFFFBE400, the return value is NULL. I believe that GPIO is a shared peripheral between MPU and DSP unit. But I'm not sure in detail on how that thing works. Can anybody help me with this? Thanx in advance.
GPIO memory mapping on OSK5912
Started by ●January 17, 2007