#include #include #define BUFFER_LENGTH 1 int main(void) { int Status; int File; File = open("/proc/GPIO", O_RDWR); if(File < 0) { printf("Datei kann nicht geoeffnet werden!\n"); return -1; } while(1) { Status = write(File, "1", BUFFER_LENGTH); sleep(1); Status = write(File, "0", BUFFER_LENGTH); sleep(1); } close(File); return 0; }