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public static ReservePin ( |
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| pin | ||
| fReserve | bool | |
| return | bool | |
/// <summary>
/// Build an instance of the PWM type
/// </summary>
/// <param name="channel">The channel</param>
/// <param name="period">The period of the pulse</param>
/// <param name="duration">The duration of the pulse. The value should be a fraction of the period</param>
/// <param name="scale">The scale factor for the period/duration (nS, uS, mS)</param>
/// <param name="invert">Whether the output should be inverted or not</param>
public PWM(Cpu.PWMChannel channel, uint period, uint duration, ScaleFactor scale, bool invert)
{
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider == null)
{
throw new InvalidOperationException();
}
m_pin = hwProvider.GetPwmPinForChannel(channel);
m_channel = channel;
//--//
m_period = period;
m_duration = duration;
m_scale = scale;
m_invert = invert;
//--//
try
{
Init();
Commit();
Port.ReservePin(m_pin, true);
}
catch
{
Dispose(false);
}
}
//--//
/// <summary>
/// Build an instance of the PWM type
/// </summary>
/// <param name="channel">The channel to use</param>
/// <param name="frequency_Hz">The frequency of the pulse in Hz</param>
/// <param name="dutyCycle">The duty cycle of the pulse as a fraction of unity. Value should be between 0.0 and 1.0</param>
/// <param name="invert">Whether the output should be inverted or not</param>
public PWM(Cpu.PWMChannel channel, double frequency_Hz, double dutyCycle, bool invert)
{
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider == null)
{
throw new InvalidOperationException();
}
m_pin = hwProvider.GetPwmPinForChannel(channel);
m_channel = channel;
//--//
m_period = PeriodFromFrequency(frequency_Hz, out m_scale);
m_duration = DurationFromDutyCycleAndPeriod(dutyCycle, m_period);
m_invert = invert;
//--//
try
{
Init();
Commit();
Port.ReservePin(m_pin, true);
}
catch
{
Dispose(false);
}
}
//--//
public I2CDevice(Configuration config)
{
this.Config = config;
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider != null)
{
Cpu.Pin scl;
Cpu.Pin sda;
hwProvider.GetI2CPins(out scl, out sda);
if (scl != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(scl, true);
}
if (sda != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(sda, true);
}
}
Initialize();
m_disposed = false;
}
private void Dispose(bool fDisposing)
{
if (!m_disposed)
{
try
{
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider != null)
{
Cpu.Pin scl;
Cpu.Pin sda;
hwProvider.GetI2CPins(out scl, out sda);
if (scl != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(scl, false);
}
if (sda != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(sda, false);
}
}
}
finally
{
m_disposed = true;
}
}
}
//--//
/// <summary>
/// Builds an instance of AnalogOutput type for the specified channel
/// </summary>
/// <param name="channel">The channel for the AnalogOutput</param>
/// <param name="scale">A multiplicative factor to apply to the value written to the sensor</param>
/// <param name="offset">A constant factor to add to the value written to the sensor</param>
/// <param name="precisionInBits">The desired bit precision for the D/A conversion. A value of -1 indicates default precision.</param>
public AnalogOutput(Cpu.AnalogOutputChannel channel, double scale, double offset, int precisionInBits)
{
m_channel = channel;
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider == null)
{
throw new InvalidOperationException();
}
m_pin = hwProvider.GetAnalogOutputPinForChannel(channel);
m_scale = scale;
m_offset = offset;
int[] availablePrecisions = hwProvider.GetAvailableAnalogOutputPrecisionInBitsForChannel(channel);
if (precisionInBits == -1)
{
if (availablePrecisions.Length == 0)
{
throw new InvalidOperationException();
}
m_precision = availablePrecisions[0];
}
else
{
bool found = false;
foreach (int precision in availablePrecisions)
{
if (precisionInBits == precision)
{
m_precision = precision;
found = true;
break;
}
}
if (!found)
{
throw new ArgumentException();
}
}
bool fReserved = false;
try {
lock (s_syncRoot) {
fReserved = Port.ReservePin(m_pin, true);
Initialize(channel, m_precision);
}
} catch {
if (fReserved)
{
Port.ReservePin(m_pin, false);
}
throw;
}
}
//--//
protected void Dispose(bool disposing)
{
try
{
Stop();
}
catch
{
// hide all exceptions...
}
finally
{
Uninit();
Port.ReservePin(m_pin, false);
}
}
private void Dispose(bool fDisposing)
{
if (!m_disposed)
{
try
{
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider != null)
{
Cpu.Pin msk;
Cpu.Pin miso;
Cpu.Pin mosi;
hwProvider.GetSpiPins(m_config.SPI_mod, out msk, out miso, out mosi);
if (msk != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(msk, false);
}
if (miso != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(miso, false);
}
if (mosi != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(mosi, false);
}
}
if (m_config.ChipSelect_Port != Cpu.Pin.GPIO_NONE)
{
m_cs.Dispose();
}
}
finally
{
m_disposed = true;
}
}
}
//--//
public SPI(Configuration config)
{
HardwareProvider hwProvider = HardwareProvider.HwProvider;
if (hwProvider != null)
{
Cpu.Pin msk;
Cpu.Pin miso;
Cpu.Pin mosi;
hwProvider.GetSpiPins(config.SPI_mod, out msk, out miso, out mosi);
if (msk != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(msk, true);
}
if (miso != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(miso, true);
}
if (mosi != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(mosi, true);
}
}
//if (config.ChipSelect_Port != Cpu.Pin.GPIO_NONE)
//{
// //m_cs = new OutputPort(config.ChipSelect_Port, !config.ChipSelect_ActiveState);
// Port.ReservePin(config.ChipSelect_Port, true);
//}
if (config.ChipSelect_Port != Cpu.Pin.GPIO_NONE)
{
Port.ReservePin(config.ChipSelect_Port, true);
}
m_config = config;
m_disposed = false;
}
private void Dispose(bool fDisposing)
{
Port.ReservePin(m_pin, false);
Uninitialize(m_channel);
}
private void Dispose(bool fDisposing)
{
Port.ReservePin(m_pin, false);
}
