[foxboard] testing outputs fails

[Daniel Boone]

Hi

I am trying to set iog24 as an output line.
I have also the sx18 expansionboard.
A led call d2 is on input/output line iog24.
I'm trying to make it work.
I tried this source code


#include "stdio.h"
#include "stdlib.h"
#include "unistd.h"
#include "sys/ioctl.h"
#include "fcntl.h"
#include "asm/etraxgpio.h"

int main(void){
        int fd;
        int iomask;

        if ((fd = open("/dev/gpiog", O_RDWR))<0) {
          printf("Open error on /dev/gpiog\n");
          exit(0);
        }
        else{
          printf("open ok \n");
        }

        iomask= 1<<24;

        printf("try to set iog24 as output \n");
        ioctl(fd,_IO(ETRAXGPIO_IOCTYPE,IO_SETBITS),iomask);

        close(fd);
}

Did I do something wrong or have I forgotten something?

thanks