C# Class CyrusBuilt.MonoPi.IO.GpioMem

Raspberry Pi GPIO using the direct memory access method. This requires the bcm2835 GPIO library provided by Mike McCauley ([email protected]) at http://www.open.com.au/mikem/bcm2835/index.html. To create the shared object, download the source code from the link above. The standard Makefile compiles a statically linked library. To build a shared object, do: tar -zxf bcm2835-1.3.tar.gz cd bcm2835-1.3/src make libbcm2835.a cc -shared bcm2835.o -o libbcm2835.so Place the shared object in the same directory as the executable and other assemblies.

Inheritance: GpioBase

Show file Open project: cyrusbuilt/MonoPi Class Usage Examples

Public Methods

Method	Description
Destroy ( ) : void	Destroy this GPIO factory.
Dispose ( ) : void	Releases all resource used by the CyrusBuilt.MonoPi.IO.GpioMem object. Call Dispose when you are finished using the CyrusBuilt.MonoPi.IO.GpioMem. The Dispose method leaves the CyrusBuilt.MonoPi.IO.GpioMem in an unusable state. After calling Dispose, you must release all references to the CyrusBuilt.MonoPi.IO.GpioMem so the garbage collector can reclaim the memory that the CyrusBuilt.MonoPi.IO.GpioMem was occupying.
GpioMem ( GpioPins pin ) : System	Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize. Access to the specified GPIO setup as an output port with an initial value of false (0).
GpioMem ( GpioPins pin, PinMode mode ) : System	Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize and the I/O direction. Access to the specified GPIO setup with the specified direction with an initial value of LOW (0).
GpioMem ( GpioPins pin, PinMode mode, PinState initialValue ) : System	Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize, the I/O direction, and the initial value to write to the pin. Access to the specified GPIO setup with the specified direction with the specified initial value.
Initialize ( ) : System.Boolean	Initialize the memory access to the GPIO.
Provision ( ) : void	Provisions the pin (initialize to specified mode and make active).
Pulse ( ) : void	Pulses the pin for 500ms.
Pulse ( Int32 millis ) : void	Pulse the pin output for the specified number of milliseconds.
Read ( ) : PinState	Read a value from the pin.
Read ( GpioPins pin ) : PinState	Read the specified Revision 1.0 pin.
Write ( GpioPins pin, PinState value ) : void	Write the specified pin and value.
Write ( PinState value ) : void	Write the specified value to the pin.

Private Methods

Method	Description
ExportPin ( GpioPins pin, PinMode mode ) : void	Exports the pin setting the direction.
UnexportPin ( GpioPins pin ) : void	Unexport the GPIO.
internal_ExportPin ( Int32 pin, PinMode mode ) : void	Export the GPIO setting the direction.
internal_Read ( Int32 pin, String pinname ) : PinState	Read the value of the specified pin.
internal_UnexportPin ( Int32 pin, String gpionum ) : void	Unexports an exported pin.
internal_Write ( Int32 pin, PinState value, String pinname ) : void	Write the value to the specified pin.

Method Details

Destroy() public static method

Destroy this GPIO factory.

public static Destroy ( ) : void
return	void

Dispose() public method

Releases all resource used by the CyrusBuilt.MonoPi.IO.GpioMem object.

Call Dispose when you are finished using the CyrusBuilt.MonoPi.IO.GpioMem. The Dispose method leaves the CyrusBuilt.MonoPi.IO.GpioMem in an unusable state. After calling Dispose, you must release all references to the CyrusBuilt.MonoPi.IO.GpioMem so the garbage collector can reclaim the memory that the CyrusBuilt.MonoPi.IO.GpioMem was occupying.

public Dispose ( ) : void
return	void

GpioMem() public method

Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize.

Access to the specified GPIO setup as an output port with an initial value of false (0).

public GpioMem ( GpioPins pin ) : System
pin	GpioPins	/// The pin on the board to access. ///
return	System

GpioMem() public method

Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize and the I/O direction.

Access to the specified GPIO setup with the specified direction with an initial value of LOW (0).

public GpioMem ( GpioPins pin, PinMode mode ) : System
pin	GpioPins	/// The pin on the board to access. ///
mode	PinMode	/// The I/0 mode of the pin. ///
return	System

GpioMem() public method

Initializes a new instance of the CyrusBuilt.MonoPi.IO.GpioMem class with the pin to initialize, the I/O direction, and the initial value to write to the pin.

Access to the specified GPIO setup with the specified direction with the specified initial value.

public GpioMem ( GpioPins pin, PinMode mode, PinState initialValue ) : System
pin	GpioPins	/// The pin on the board to access. ///
mode	PinMode	/// The I/0 mode of the pin. ///
initialValue	PinState	/// The pin's initial value. ///
return	System

Initialize() public static method

Initialize the memory access to the GPIO.

public static Initialize ( ) : System.Boolean
return	System.Boolean

Provision() public method

Provisions the pin (initialize to specified mode and make active).

public Provision ( ) : void
return	void

Pulse() public method

Pulses the pin for 500ms.

public Pulse ( ) : void
return	void

Pulse() public method

Pulse the pin output for the specified number of milliseconds.

/// An attempt was made to pulse an input pin. ///

public Pulse ( Int32 millis ) : void
millis	System.Int32	/// The number of milliseconds to wait between states. ///
return	void

Read() public method

Read a value from the pin.

public Read ( ) : PinState
return	PinState

Read() public static method

Read the specified Revision 1.0 pin.

public static Read ( GpioPins pin ) : PinState
pin	GpioPins	/// The pin to read. ///
return	PinState

Write() public static method

Write the specified pin and value.

public static Write ( GpioPins pin, PinState value ) : void
pin	GpioPins	/// The pin to write to. ///
value	PinState	/// The value to write. ///
return	void

Write() public method

Write the specified value to the pin.

public Write ( PinState value ) : void
value	PinState	/// The value to write to the pin. ///
return	void