c example w/ arguments and LED toggle

main
Francisco Ferreira 1 week ago
parent 883970c33d
commit be9aa0eb55

BIN
hello

Binary file not shown.

@ -1,6 +1,43 @@
#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);
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]);

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