E698PM LED test.c

#include <stdlib.h>
#include <stdio.h>  

#define GPIO_DIR_REG 	*(volatile unsigned int *)(0x80000608)	// GPIO direction register
 
int main(void) {

	int i,j;
	printf("Hello world!!!");
	while (1)
	{
		for (i=1; i<=0b10000; i<<=1)
		{
			GPIO_DIR_REG = i;
			for (j=0; j<400000; j++); // delay
		}
	}
	// should never reach here
	return EXIT_SUCCESS;
}