public void Setup(int pin, Direction direction, PullUpDown pullUpDown)
{
Pin pinObj;
if (pins.ContainsKey(pin))
{
pinObj = pins[pin];
}
else
{
pinObj = new Pin();
// export pin
Export(pin);
// create direction streams
pinObj.DirectionStream = new FileStream(string.Format(GpioPinDirectionPath, pin), FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
pinObj.DirectionWriter = new StreamWriter(pinObj.DirectionStream, Encoding.ASCII);
pinObj.DirectionReader = new StreamReader(pinObj.DirectionStream, Encoding.ASCII);
// create value streams
pinObj.ValueStream = new FileStream(string.Format(GpioPinValuePath, pin), FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
pinObj.ValueWriter = new StreamWriter(pinObj.ValueStream, Encoding.ASCII);
pinObj.ValueReader = new StreamReader(pinObj.ValueStream, Encoding.ASCII);
pins.Add(pin, pinObj);
}
// set pin direction
PosixUtils.Echo(pinObj.DirectionWriter, direction == Direction.Input ? "in" : "out");
// TODO : and pull up down ?
}
private static unsafe void SetPullUpDown(int *gpioMapPtr, int gpio, PullUpDown pud)
{
var clkOffset = PULLUPDNCLK_OFFSET + (gpio / 32);
var shift = (gpio % 32);
if (pud == PullUpDown.Down)
{
*(gpioMapPtr + PULLUPDN_OFFSET) = (*(gpioMapPtr + PULLUPDN_OFFSET) & ~3) | PUD_DOWN;
}
else if (pud == PullUpDown.Up)
{
*(gpioMapPtr + PULLUPDN_OFFSET) = (*(gpioMapPtr + PULLUPDN_OFFSET) & ~3) | PUD_UP;
}
else
{
*(gpioMapPtr + PULLUPDN_OFFSET) &= ~3;
}
Thread.SpinWait(150);
*(gpioMapPtr + clkOffset) = 1 << shift;
Thread.SpinWait(150);
*(gpioMapPtr + PULLUPDN_OFFSET) &= ~3;
*(gpioMapPtr + clkOffset) = 0;
}
/// <inheritDoc />
public void SetPullUpDown(int gpio, PullUpDown pud)
{
short ret = PiGpioNativeMethods.SetPullUpDown((ushort)gpio, (ushort)pud);
if (ret < 0)
{
throw new PiGPIOException(ret);
}
}
/// <summary>
/// http://abyz.co.uk/rpi/pigpio/pigs.html#PUD
/// </summary>
/// <param name="gpio"></param>
/// <param name="pullUp"></param>
public void SetPullUpDown(int gpio, PullUpDown pullUp)
{
Commands cmd = Commands.PUD;
uint p1 = (uint)gpio;
uint p2 = (uint)pullUp;
int p3 = 0;
byte[] extension = null;
int res;
byte[] resExtension;
this.m_control.RunCommand(cmd, p1, p2, p3, extension, out res, out resExtension);
}
public unsafe void Setup(int pin, Direction direction, PullUpDown pullUpDown)
{
var gpioMapPtr = (int *)gpioMap;
var offset = FSEL_OFFSET + (pin / 10);
var shift = (pin % 10) * 3;
SetPullUpDown(gpioMapPtr, pin, pullUpDown);
if (direction == Direction.Output)
{
*(gpioMapPtr + offset) = (*(gpioMapPtr + offset) & ~(7 << shift)) | (1 << shift);
}
else
{
*(gpioMapPtr + offset) = (*(gpioMapPtr + offset) & ~(7 << shift));
}
}
public Task SetupAsync(int pin, Direction direction, PullUpDown pullUpDown)
{
throw new NotImplementedException();
}
public void Setup(int pin, Direction direction, PullUpDown pullUpDown)
{
textWriter.WriteLine("Setup pin {0} Direction {1} PullUpDown {2}", pin, direction, pullUpDown);
}
public async Task SetupAsync(int pin, Direction direction, PullUpDown pullUpDown)
{
Setup(pin, direction, pullUpDown);
}
void IPiGPIO.SetPullUpDown(int gpio, PullUpDown pud)
{
throw new NotImplementedException();
}
public void SetPullUpDown(int gpio, PullUpDown pud)
{
throw new NotImplementedException();
}
