I wrote a simple piece of test code in order to manipulate GPIOs (I want to access the registers in the most simple manner i.e. without looking for thousands of header files) :
#include <stdio.h>
unsigned long test;
#define Uint16 unsigned int
#define Uint32 unsigned long
#define GPADIR (volatile Uint32 *) 0x00006F8A
#define GPAPUD (volatile Uint32 *) 0x00006F8C
#define GPASET (volatile Uint32 *) 0x00006FC2
#define GPADAT (volatile Uint32 *) 0x00006FC0
void main(void) {
test = *GPAPUD;
*GPAPUD = 0x00000FFE;
}
But the code seams not working, cause the GPAPUD cannot be read neither written (I check state of the registers with XDS100 emulator). Any ideas what is wrong?
