Adafruit.Pwm

C# implementation of Adafruit PWM Servo driver

The library can be used from the Windows 10 IoT Core release to control the Adafruit PWM servo. It is based on the C++ the sample provided by Adafruit which is available here.

How to use:

1. Add a reference to the Adafruit.Pwm library to your Universal Windows application.
2. Create an instance of the Adafruit.Pwm.PwmController(). You can optionally specify the base address if your device is not located at the default of 0x40
3. Optionally invoke SetDesiredFrequency; if not set, a default of 60Hz is used.
4. Invoke SetPulseParameters

Example:

//The servoMin/servoMax values are dependant on the hardware you are using.
//The values below are for my SR-4303R continuous rotating servos.
//If you are working with a non-continous rotatng server, it will have an explicit
//minimum and maximum range; crossing that range can cause the servo to attempt to
//spin beyond its capability, possibly damaging the gears.

const int servoMin = 300;  // Min pulse length out of 4095
const int servoMax = 480;  // Max pulse length out of 4095

using (var hat = new Adafruit.Pwm.PwmController())
{
	DateTime timeout = DateTime.Now.AddSeconds(10);
	hat.SetDesiredFrequency(60);
	while (timeout >= DateTime.Now)
	{
		hat.SetPulseParameters(0, servoMin, false);
		Task.Delay(TimeSpan.FromSeconds(1)).Wait();
		hat.SetPulseParameters(0, servoMax, false);
		Task.Delay(TimeSpan.FromSeconds(1)).Wait();
	}
}