diff --git a/main.c b/main.c index ca352f1..e794e4e 100644 --- a/main.c +++ b/main.c @@ -6,6 +6,10 @@ 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 export path"); + return -1; + } write(fd,"17", 2); close(fd); @@ -32,9 +36,6 @@ int main (int argc, char *argv[]){ close(fd); - - - printf("Hello from Raspberry Pi!\n"); printf("Number of arguments: %d\n",argc); printf("Program is reciving: %s\n",argv[0]);