#include <stdio.h>
#include <unistd.h>

int main(void) {
	unsigned char byte, foo;
	FILE *GPIOMOD;

	GPIOMOD=fopen("/dev/gpiomod", "w");
	setvbuf(GPIOMOD, &foo, _IONBF, 1);
	byte=1;
	while (byte==64) {
	printf("Byte value: %d\n", byte);
	fwrite(&byte, 1, 1, GPIOMOD);
	
	byte <<=1;
	if (byte == 0 ) byte = 1;
	sleep(1);
	}
	fclose(GPIOMOD);
}