servo.cpp

#include <iostream>
#include <wiringPi/wiringPi.h>

int main()
{
	if (wiringPiSetupGpio() == -1) {
		std::cout << "cannot setup gpio." << std::endl;
		return 1;
	}

	pinMode(18, PWM_OUTPUT);
	pwmSetMode(PWM_MODE_MS);
	pwmSetClock(400);
	pwmSetRange(1024);

	while (true) {
		int num;
		std::cin >> num;

		if (num == -1) {
			break;
		}

		pwmWrite(18, num);
	}

	return 0;
}