You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1008 B
C
55 lines
1008 B
C
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
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
|
|
|
|
fd=open("/sys/class/gpio/chip0/gpio17/direction", O_WRONLY);
|
|
write(fd, "out",3);
|
|
close(fd);
|
|
|
|
//WRITE VALUE
|
|
fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY);
|
|
write(fd, "1",1);
|
|
close(fd);
|
|
sleep(10);
|
|
|
|
fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY);
|
|
write(fd, "0",1);
|
|
close(fd);
|
|
sleep(10);
|
|
|
|
|
|
fd=open("/sys/class/gpio/chip0/gpio17/value", O_WRONLY);
|
|
write(fd, "1",1);
|
|
close(fd);
|
|
sleep(10);
|
|
|
|
//UNEXPORT
|
|
fd=open("/sys/class/gpio/chip0/gpio17/unexport", O_WRONLY);
|
|
write(fd, "17",2);
|
|
close(fd);
|
|
|
|
|
|
//
|
|
printf("Hiii hello\n");
|
|
printf("number of arguments: %d \n", argc);
|
|
printf("program is reciving: %s \n", argv[0]);
|
|
|
|
if(argc>1){
|
|
printf("Argument %s\n ", argv[1]);
|
|
}
|
|
return 0;
|
|
}
|