error catcher

23 hours ago · 819251246c
parent 70ac229edb
commit 819251246c
1 changed files with 6 additions and 1 deletions
--- a/main.c
+++ b/main.c
@ -6,6 +6,11 @@ int main(int argc, char *argv[]){
 	int fd;
 	//EXPORT
 	fd=open("/sys/class/gpio/chip0/export", O_WRONLY);
+	if(fd<0)
+	{
+		perror("Error opening the gpio");
+		return -1;
+	}
 	write(fd, "17",2);
 	close(fd);	
 	//PIN DIRECTION