private void InitGpio(BcmPin pin)
{
var gpio = Pi.Gpio[pin];
gpio.InputPullMode = GpioPinResistorPullMode.PullUp;
gpio.PinMode = GpioPinDriveMode.Input;
}
public IGpioPin CreatePin(BcmPin id, GpioPinDriveMode mode = GpioPinDriveMode.Output)
{
var pin = new TestGpioPin(id);
pin.PinMode = mode;
return(pin);
}
public static GpioPinLock ObtainLock(BcmPin pin)
{
if (!Directory.Exists(LocksLocation))
{
Debug.WriteLine($"Gpio lock folder not found. Creating new one at {LocksLocation}");
Directory.CreateDirectory(LocksLocation);
Debug.WriteLine($"Gpio lock folder created.");
}
while (true)
{
try
{
var pinName = Enum.GetName(typeof(BcmPin), pin);
Debug.WriteLine($"Requesting lock for {pinName}");
var path = CreateLockFilePath(pin);
var lockStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
lockStream.Lock(0, 0);
Debug.WriteLine($"{pinName} locked");
return(new GpioPinLock(pin, lockStream));
}
catch (IOException ex)
{
Debug.WriteLine(ex.Message);
Thread.Sleep(50);
}
}
}
public IGpioPin CreatePin(BcmPin id, GpioPinDriveMode mode = GpioPinDriveMode.Output)
{
IGpioPin pin = Pi.Gpio[id];
pin.PinMode = mode;
return(pin);
}
public static void SetPinValue(BcmPin pinNumber, bool value, int?duration = null)
{
var pinName = Enum.GetName(typeof(BcmPin), pinNumber);
Debug.WriteLine($"Setting value of {pinName} to {value}");
var pin = Pi.Gpio[pinNumber];
if (pin.PinMode != GpioPinDriveMode.Output)
{
pin.PinMode = GpioPinDriveMode.Output;
}
using (GpioPinLock.ObtainLock(pinNumber))
{
pin.Write(value);
}
Debug.WriteLine($"Value of {pinName} is now {value}");
if (duration.HasValue)
{
Debug.WriteLine($"Waiting for {duration}ms before setting {pinName} to {!value}.");
Thread.Sleep(duration.Value);
pin.Write(!value);
Debug.WriteLine($"Value of {pinName} is now {value}");
}
}
public WaterControllerContext(string id, BcmPin pin, double litersPerSecond)
{
TimeProvider = new TestTimeProvider();
GpioPin = new TestGpioPin(pin);
GpioPin.PinMode = GpioPinDriveMode.Output;
GpioPin.Write(WaterController.PIN_OFF);
WaterController = new WaterController(id, new LoggerFactory(), GpioPin, litersPerSecond, TimeProvider);
}
/// <summary>
/// Initializes a new instance of the <see cref="GpioPin"/> class.
/// </summary>
/// <param name="bcmPinNumber">The BCM pin number.</param>
private GpioPin(BcmPin bcmPinNumber)
{
BcmPin = bcmPinNumber;
BcmPinNumber = (int)bcmPinNumber;
WiringPiPinNumber = BcmToWiringPiPinNumber(bcmPinNumber);
PhysicalPinNumber = Definitions.BcmToPhysicalPinNumber(SystemInfo.GetBoardRevision(), bcmPinNumber);
Header = (BcmPinNumber >= 28 && BcmPinNumber <= 31) ? GpioHeader.P5 : GpioHeader.P1;
}
static async Task Blink(BcmPin pinNumber, CancellationToken cancellationToken)
{
var pin = Pi.Gpio[pinNumber];
pin.PinMode = GpioPinDriveMode.Output;
while (!cancellationToken.IsCancellationRequested)
{
pin.Write(!pin.Value);
await Task.Delay(500);
}
pin.Write(false);
}
private void CheckButton(BcmPin pin, Dictionary <BcmPin, bool> buttonState)
{
if (!Pi.Gpio[pin].Read() && !buttonState[pin])
{
buttonState[pin] = true;
OnKeyPressed.Invoke((int)pin);
}
if (Pi.Gpio[pin].Read() && buttonState[pin])
{
OnKeyReleased.Invoke((int)pin);
buttonState[pin] = false;
}
}
public static bool GetPinValue(BcmPin pinNumber)
{
Debug.WriteLine($"Reading value of {Enum.GetName(typeof(BcmPin), pinNumber)}");
var pin = Pi.Gpio[pinNumber];
if (pin.PinMode != GpioPinDriveMode.Input)
{
pin.PinMode = GpioPinDriveMode.Input;
}
var pinValue = pin.Read();
Debug.WriteLine($"Value of {Enum.GetName(typeof(BcmPin), pinNumber)} is {pinValue}");
return(pinValue);
}
public DHT(BcmPin datatPin, DHTSensorTypes sensor)
{
if (datatPin != 0)
{
_dataPin = Pi.Gpio[datatPin];
_firstReading = true;
_prevReading = DateTime.MinValue;
_data = new UInt32[6];
_sensorType = sensor;
//Init the data pin
_dataPin.PinMode = GpioPinDriveMode.Output;
_dataPin.Write(GpioPinValue.High);
}
else
{
throw new ArgumentException("Parameter cannot be null.", "dataPin");
}
}
/// <summary>
/// Setup the wheel
/// </summary>
/// <param name="pinPwm">Pin used for the PWM</param>
/// <param name="pinFwd">Pin used to enable forward</param>
/// <param name="pinRev">Pin used to enable reverse</param>
public Wheel(BcmPin pinPwm, BcmPin pinFwd, BcmPin pinRev)
{
PinFwd = (GpioPin)Pi.Gpio[pinFwd];
PinFwd.PinMode = GpioPinDriveMode.Output;
PinFwd.Write(true);
PinRev = (GpioPin)Pi.Gpio[pinRev];
PinRev.PinMode = GpioPinDriveMode.Output;
PinRev.Write(true);
// TODO: Check out:
// https://raspberrypi.stackexchange.com/questions/4906/control-hardware-pwm-frequency
// https://stackoverflow.com/questions/20081286/controlling-a-servo-with-raspberry-pi-using-the-hardware-pwm-with-wiringpi
PinPwm = (GpioPin)Pi.Gpio[pinPwm];
PinPwm.PinMode = GpioPinDriveMode.PwmOutput;
PinPwm.PwmMode = PwmMode.MarkSign;
// pwmFrequency in Hz = 19.2e6 Hz / pwmClock / pwmRange.
PinPwm.PwmClockDivisor = 16; // 1 is 4096, possible values are all powers of 2 starting from 2 to 2048
PinPwm.PwmRange = 1024;
PinPwm.PwmRegister = 0; // (int)(pin.PwmRange * decimal duty); // This goes from 0 to PwmRange-1
}
/// <summary> /// BCMs to physical pin number. /// </summary> /// <param name="rev">The rev.</param> /// <param name="bcmPin">The BCM pin.</param> /// <returns>The physical pin number.</returns> public static int BcmToPhysicalPinNumber(BoardRevision rev, BcmPin bcmPin) => rev == BoardRevision.Rev1 ? GpioToPhysR1[(int)bcmPin] : GpioToPhysR2[(int)bcmPin];
private GpioPinLock(BcmPin pin, FileStream lockStream)
{
LockStream = lockStream;
Pin = pin;
}
public MockGpioPin(BcmPin id)
{
BcmPin = id;
PinMode = GpioPinDriveMode.Input;
}
private static string CreateLockFilePath(BcmPin pin)
{
return(LocksLocation + Enum.GetName(typeof(BcmPin), pin));
}
public async Task <IGpioPinModel> SetPinConfiguration(BcmPin bcmPinNumbe, IGpioPinModel pinConfiguration)
{
throw new NotImplementedException();
}
public IGpioPinModel GetPinConfiguration(BcmPin bcmPin)
{
return(GetPinConfiguration(BcmPinToNumber(bcmPin)));
}
private int BcmPinToNumber(BcmPin bcmPin) => _gpioController.Where(t => t.BcmPin == bcmPin).Select(t => t.BcmPinNumber).First();
public IGpioPin this[BcmPin bcmPin] => this[(int)bcmPin];
/// <inheritdoc /> public IGpioPin this[BcmPin bcmPin] => throw new NotImplementedException();
