Re: AW: GPIO OF OMAP5912

Hingkwan Huen
2006-08-29T16:50:23Z

Don't think you can access physical memory directly in user space. You
should use /dev/mem instead.

-kwan

On Tue, 2006-08-29 at 16:08 +0200, LIMITED Nguyen Duong Thanh (CR/AEM
Praktikant) wrote:
> Hello,
>
> I don't know if my idea help you.
> Maybe the problem is about the libraries in directory /lib/ on OMAP file systems. It doesn't contain the libraries, which your program need.
>
> Regard,
> Thanh
>
> -----Ursprüngliche Nachricht-----
> Von: linux-omap-open-source-bounces@linux.omap.com [mailto:linux-omap-open-source-bounces@linux.omap.com] Im Auftrag von w.b.b
> Gesendet: Dienstag, 29. August 2006 08:44
> An: Linux-omap-open-source@linux.omap.com
> Betreff: GPIO OF OMAP5912
>
> hi:
>
> i want to do some work about OMAP5912'GPIO.but I am failed to do that.
>
> the following is a simple program:
>
> test.c
>
> -----------------------------------------------------
>
> #include <stdio.h>
> #include <unistd.h>
> #include <asm/io.h>
>
> #define GPIO3_OUT 0xfffbbc40 /* lp1 */
>
> int main()
> {
> /* Get access to the ports */
>
>
> /* Set the data signals (D0-7) of the port to all low (0) */
> outb(0xffff, GPIO3_OUT);
>
> /* Sleep for a while (100 ms) */
> usleep(100000);
> }
> -----------------------------------------------------
> arm-linux-gcc -g test.c -o test.out
> ----------------------------------------------------
> I run the binary file on the omap:./test.out
> -----------------------------------------------------
> but i get the result:segmentation falt!
> ---------------------------------------------------
> who can provide me with information? if you have done work related with gpio,would you like send me some examplefile?
> thanks!
> _______________________________________________
> Linux-omap-open-source mailing list
> Linux-omap-open-source@linux.omap.com
> http://linux.omap.com/mailman/listinfo/linux-omap-open-source
>
>