From 8446b18261a9c12453a3a63964422e9cea45cfa2 Mon Sep 17 00:00:00 2001 From: Francisco Ferreira Date: Thu, 24 Sep 2026 09:17:58 -0600 Subject: [PATCH] error catcher --- main.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/main.c b/main.c index 8aed1ab..1636d7f 100644 --- a/main.c +++ b/main.c @@ -16,28 +16,53 @@ int main(int argc, char *argv[]){ //PIN DIRECTION fd=open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY); + if(fd<0) + { + perror("Error opening the gpio"); + return -1; + } write(fd, "out",3); close(fd); //WRITE VALUE fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY); + if(fd<0) + { + perror("Error opening the gpio"); + return -1; + } write(fd, "1",1); close(fd); sleep(10); fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY); + if(fd<0) + { + perror("Error opening the gpio"); + return -1; + } write(fd, "0",1); close(fd); sleep(10); fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY); + if(fd<0) + { + perror("Error opening the gpio"); + return -1; + } write(fd, "1",1); close(fd); sleep(10); //UNEXPORT fd=open("/sys/class/gpio/chip0/gpio17/unexport", O_WRONLY); + if(fd<0) + { + perror("Error opening the gpio"); + return -1; + } write(fd, "17",2); close(fd);