export function ok

arguments
Gerardo Marx 2 weeks ago
parent 276fb40fb6
commit 45749112f7

@ -8,16 +8,16 @@
// prototype functions // prototype functions
int gpio_export(const char *gpio); int gpio_export(const char *gpio);
int gpio_direction(int gpio, const char *direction); int gpio_direction(int gpio, const char *direction); // this function
int gpio_write(int gpio, int value); int gpio_write(int gpio, int value);
int main(int argc, char *argv[]){ int main(int argc, char *argv[]){
int fd; int fd;
char pin[] = "17"; char pin[] = "17"; // get gpio number from argument
gpio_export(pin); gpio_export(pin);
// pin direction // pin direction - convert into functions
fd = open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY); fd = open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY);
if(fd<0) if(fd<0)
{ {
@ -77,7 +77,7 @@ int gpio_export(const char *gpio){
perror("Error opening the GPIO path"); perror("Error opening the GPIO path");
return -1; return -1;
} }
write(fd,"17",2); write(fd,gpio,strlen(gpio));
close(fd); close(fd);
return 0; return 0;
} }

Loading…
Cancel
Save