// 1
int main(int argc,char *argv[]) {
  int d = dio_open("");
	
  dio_set(d,"RED_LED",1);
  sleep(1);
  dio_set(d,"RED_LED",0);
  sleep(1);
  dio_set(d,"GREEN_LED",1);
  sleep(1);
  dio_set(d,"GREEN_LED",0);
}
// 2
int main(int argc,char *argv[]) {
   int d = dio_open("192.168.0.218");

   printf("Red LED is %s\n",dio_get(d,"RLED")?"ON":"OFF");
   printf("Green LED is %s\n",dio_get(d,"GLED")?"ON":"OFF");
   dio_close(d);
}
// 3
int main(int argc,char *argv[]) {
	int d = dio_open("192.168.0.218");
	int gled,rled;
	
	gled = dio_lookup(d,"GLED");
	rled = dio_lookup(d,"RLED");
	printf("Red LED is %s\n",dio_getpin(d,rled)?"ON":"OFF");
	printf("Green LED is %s\n",dio_getpin(d,gled)?"ON":"OFF");
	dio_setpin(d,rled,1);
	sleep(1);
	dio_setpin(d,rled,0);
	sleep(1);
	dio_setpin(d,gled,1);
	sleep(1);
	dio_setpin(d,gled,0);
   dio_close(d);
}
// 4
int main(int argc,char *argv[]) {
   int d = dio_open("192.168.0.218");
   char *name;
   int val;

   while (dio_names(d,&name,&val) != -1) {
      printf("%s=%d\n",name,val);
   }
   dio_close(d);
}
// 5
int main(int argc,char *argv[]) {
	int d = dio_open("192.168.0.218");
	int group;
	int block=1;
	int i;
	struct timeval tv;
	
	group = dio_groupinit(d);
	dio_groupadd(d,group,"GLED");
	dio_groupadd(d,group,"RLED");
	if (block) {
		printf("Waiting for LEDs...\n");
		dio_grouplock(d,group);
		dio_getcurrenttime(d,&tv);
		printf("Done waiting\n");
		// do something to actually wait for lock to occur
		// otherwise we will queue all our requests and when
		// the lock occurs they will all be done at once without
		// the required delays!
	} else {
		if (!dio_grouptrylock(d,group)) {
			printf("LED(s) busy\n");
			return 0;
		}
	}
	for (i=0;i<5;i++) {
		dio_set(d,"RLED",1);
		dio_groupsync(d,group);
		sleep(1);
		dio_set(d,"RLED",0);
		dio_groupsync(d,group);
		sleep(1);
		dio_set(d,"GLED",1);
		dio_groupsync(d,group);
		sleep(1);
		dio_set(d,"GLED",0);
		dio_groupsync(d,group);
		if (i<4) sleep(1);
	}
	dio_groupunlock(d,group);
	dio_close(d);
}
// 6
int main(int argc,char *argv[]) {
	int d = dio_open("192.168.0.218");
	int i,group,gled,rled;

	group = dio_groupinit(d);
	dio_groupadd(d,group,"GLED");
	dio_groupadd(d,group,"RLED");

	if (dio_grouptrylock(d,group)) {
		printf("Driving LEDs\n");
		while (1) {
			dio_set(d,"RLED",1);
			dio_groupsync(d,group);
			sleep(1);
			dio_set(d,"RLED",0);
			dio_groupsync(d,group);
			sleep(1);
			dio_set(d,"GLED",1);
			dio_groupsync(d,group);
			sleep(1);
			dio_set(d,"GLED",0);
			dio_groupsync(d,group);
			sleep(1);
		}
	} else {
		printf("Watching LEDs\n");
		dio_groupisync(d,group);
		while (1) {
			gled = !dio_get(d,"GLED");
			rled = !dio_get(d,"RLED");
			dio_groupwaitirq(d,group,(gled?1:0)+(rled?2:0),3);
			if (dio_get(d,"GLED") == gled) {
				printf("GLED turned %s\n",gled?"ON":"OFF");
			}
			if (dio_get(d,"RLED") == rled) {
				printf("RLED turned %s\n",rled?"ON":"OFF");
			}
		}
	}
	dio_close(d);
}