> gpio_ptr = (volatile unsigned int*)mmap(NULL,0x4000,
>(PROT_READ|PROT_WRITE),MAP_SHARED, mem_fd, 0x90040000);
> /* now gpio_ptr points to a virtual mapping to physmem at 0x90040000 */
>
> /* Setup the Various Needed Registers */
> GPDR = gpio_ptr + 0x00000004;
> GPSR = gpio_ptr + 0x00000008;
> GPCR = gpio_ptr + 0x0000000C;
You need to either declare gpio_ptr as (char *) or divide those offsets by
four.
p.
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