private static void PWMFanRealWorldExample()
{
Console.WriteLine("Starting PWM Controller - Realworld Demo");
var pwmController = new PwmController();
var gpioController = new GpioController();
try
{
var chip = 0; //On the Rapsberry Pi this will be GPIO 18
var channel = 0; //On the Rapsberry Pi this will be GPIO 18
var hertz = 25; //12v PWM PC Fans run on a 25 hertz frequency
int?tachoPin = 23; //A normal GPIO pin connected to the tachometer pin on the fan
using (var fan = new PwmFan(gpioController, pwmController, chip, channel, hertz, tachoPin))
{
fan.On();
Task.Delay(new TimeSpan(0, 0, 0, 2)).Wait(); //Wait for a bit for inital fan start up.
var dutyCycle = 100;
while (dutyCycle >= 0)
{
fan.SetSpeed(dutyCycle);
Task.Delay(new TimeSpan(0, 0, 0, 2)).Wait(); //2 seconds
Console.WriteLine($"DutyCycle: {dutyCycle}, RPM: {fan.RPM}");
dutyCycle = dutyCycle - 10;
}
fan.Off();
}
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex}");
}
finally
{
pwmController.Dispose();
gpioController.Dispose();
}
Console.WriteLine("Finished - Real World Demo");
}
public override void Dispose()
{
_pwm?.Dispose();
_pwm = null;
base.Dispose();
}
/// <summary>
/// Dispose Buzzer.
/// </summary>
public void Dispose()
{
_pwmController.Dispose();
}