[beagleboard] I wanna 8bit gpio control

Looking at the compiler errors -
> gcc -o led_blink led_blink.c
/tmp/ccfrwmlk.o: In function `main':
led_blink.c:(.text+0x5c8): undefined reference to `pin_wirte'
led_blink.c:(.text+0x5e0): undefined reference to `pin_wirte'
led_blink.c:(.text+0x5f8): undefined reference to `pin_wirte'
led_blink.c:(.text+0x610): undefined reference to `pin_wirte'

the pin_wirte is the problem.

Your main function has

pin_write(p9_13,0); pin_wirte(p9_14,0);
pin_write(p9_15,0); pin_wirte(p9_16,0);
pin_write(p9_17,0); pin_wirte(p9_18,0);

Change those four references and recompile.