added the gpio_direction function

main.c

@@ -16,16 +16,9 @@ int main (int argc, char *argv[]){
 
 	int fd;
 	char pin[] = "17";	
-
 	gpio_export(pin);	
+	char direction[] = "out";
 	//pin direction
-	fd = open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY);
-	if (fd < 0){
-		perror("Error opening the GPIO path");
-		return -1;
-	}
-	write(fd,"out", 3);
-	close(fd);
 
 
 	//pin value
@@ -79,7 +72,25 @@ int gpio_export(const char *gpio){
 		perror("Error opening the GPIO path");
 		return -1;
 	}
-	write(fd,gpio, strlen(gpio));
+	write(fd, gpio, strlen(gpio));
 	close(fd);
 	return(0);
 }
+//pin_directions
+
+int gpio_direction(int gpio, const char *direction){
+
+	int fd;
+
+	fd = open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY);
+	if (fd < 0){
+		perror("Error opening the GPIO path");
+		return -1;
+	}
+	write(fd, direction, 3);
+	close(fd);
+	return (0);
+}
+//pin_value
+
+