Implements using two gpiohandle_requests object for working with multiple pins. More...

Inheritance diagram for duds::hardware::interface::linux::IoGpioRequest:

Collaboration diagram for duds::hardware::interface::linux::IoGpioRequest:

Public Member Functions
	IoGpioRequest (const std::string &consumer)

virtual	~IoGpioRequest ()

void	addInputOffset (std::uint32_t offset)
	Adds an offset for input use. More...

void	addOutputOffset (std::uint32_t offset, bool state)
	Adds an offset for output use and sets the initial output state. More...

virtual void	inputOffset (int chipFd, std::uint32_t offset)
	Configures the pin at the given offset as an input. More...

virtual bool	inputState (int chipFd, std::uint32_t offset)
	Reads the input state of the indicated pin. More...

void	lastOutputState (bool state)

virtual void	outputOffset (int chipFd, std::uint32_t offset, bool state)
	Configures the pin at the given offset as an output. More...

virtual void	outputState (std::uint32_t offset, bool state)
	Sets the output state of a single pin in advance of making the output request to the port. More...

virtual void	read (int chipFd, gpiohandle_data &result, std::uint32_t *&offsets, int &length)
	Read from all input pins. More...

virtual void	write (int chipFd)
	Configures pins as outputs and sets their output states. More...

virtual void	write (int chipFd, std::uint32_t offset, bool state)
	Sets the output state of a single output pin. More...

Public Member Functions inherited from duds::hardware::interface::linux::GpioRequest
virtual	~GpioRequest ()

Private Attributes
gpiohandle_request	inReq
	Input request. More...

gpiohandle_request	outReq
	Output request. More...

Detailed Description

Implements using two gpiohandle_requests object for working with multiple pins.

Author: Jeff Jackowski

Definition at line 335 of file GpioDevPort.cpp.

Constructor & Destructor Documentation

◆ IoGpioRequest()

duds::hardware::interface::linux::IoGpioRequest::IoGpioRequest ( const std::string & consumer )

inline

Definition at line 345 of file GpioDevPort.cpp.

◆ ~IoGpioRequest()

virtual duds::hardware::interface::linux::IoGpioRequest::~IoGpioRequest ( )

inlinevirtual

Definition at line 351 of file GpioDevPort.cpp.

Member Function Documentation

◆ addInputOffset()

void duds::hardware::interface::linux::IoGpioRequest::addInputOffset ( std::uint32_t offset )

inline

Adds an offset for input use.

Precondition: The offset is not in either the input or output set.

Definition at line 362 of file GpioDevPort.cpp.

Referenced by duds::hardware::interface::linux::GpioDevPort::madeAccess().

◆ addOutputOffset()

void duds::hardware::interface::linux::IoGpioRequest::addOutputOffset	(	std::uint32_t	offset,
		bool	state
	)

inline

Adds an offset for output use and sets the initial output state.

Precondition: The offset is not in either the input or output set.

Definition at line 369 of file GpioDevPort.cpp.

Referenced by duds::hardware::interface::linux::GpioDevPort::madeAccess().

◆ inputOffset()

virtual void duds::hardware::interface::linux::IoGpioRequest::inputOffset	(	int	chipFd,
		std::uint32_t	offset
	)

inlinevirtual

Configures the pin at the given offset as an input.

Parameters

chipFd	The file descriptor for the GPIO device.
offset	The pin offset.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 373 of file GpioDevPort.cpp.

◆ inputState()

virtual bool duds::hardware::interface::linux::IoGpioRequest::inputState	(	int	chipFd,
		std::uint32_t	offset
	)

inlinevirtual

Reads the input state of the indicated pin.

Configures the pin as an input if not already an input.

Parameters

chipFd	The file descriptor for the GPIO device.
offset	The pin offset.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 425 of file GpioDevPort.cpp.

◆ lastOutputState()

void duds::hardware::interface::linux::IoGpioRequest::lastOutputState ( bool state )

inline

Definition at line 355 of file GpioDevPort.cpp.

◆ outputOffset()

virtual void duds::hardware::interface::linux::IoGpioRequest::outputOffset	(	int	chipFd,
		std::uint32_t	offset,
		bool	state
	)

inlinevirtual

Configures the pin at the given offset as an output.

Parameters

chipFd	The file descriptor for the GPIO device.
offset	The pin offset.
state	The output state for the pin.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 386 of file GpioDevPort.cpp.

◆ outputState()

virtual void duds::hardware::interface::linux::IoGpioRequest::outputState	(	std::uint32_t	offset,
		bool	state
	)

inlinevirtual

Sets the output state of a single pin in advance of making the output request to the port.

Use write(int) to output the data.

Parameters

offset	The pin offset.
state	The output state to store for the pin.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 432 of file GpioDevPort.cpp.

◆ read()

virtual void duds::hardware::interface::linux::IoGpioRequest::read	(	int	chipFd,
		gpiohandle_data &	result,
		std::uint32_t *&	offsets,
		int &	length
	)

inlinevirtual

Read from all input pins.

Parameters

chipFd	The file descriptor for the GPIO device.
result	The input states.
offsets	A pointer to the start of an array with the line offset values for identifying where the input source.
length	The number of line offsets.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 400 of file GpioDevPort.cpp.

◆ write() [1/2]

virtual void duds::hardware::interface::linux::IoGpioRequest::write ( int chipFd )

inlinevirtual

Configures pins as outputs and sets their output states.

Parameters

chipFd The file descriptor for the GPIO device.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 410 of file GpioDevPort.cpp.

◆ write() [2/2]

virtual void duds::hardware::interface::linux::IoGpioRequest::write	(	int	chipFd,
		std::uint32_t	offset,
		bool	state
	)

inlinevirtual

Sets the output state of a single output pin.

Precondition: The pin is already configured as an output.

Parameters

chipFd	The file descriptor for the GPIO device.
offset	The pin offset.
state	The output state for the pin.

Implements duds::hardware::interface::linux::GpioRequest.

Definition at line 415 of file GpioDevPort.cpp.

Member Data Documentation

◆ inReq

gpiohandle_request duds::hardware::interface::linux::IoGpioRequest::inReq

private

Input request.

Definition at line 339 of file GpioDevPort.cpp.

◆ outReq

gpiohandle_request duds::hardware::interface::linux::IoGpioRequest::outReq

private

Output request.

Definition at line 343 of file GpioDevPort.cpp.

The documentation for this class was generated from the following file:

GpioDevPort.cpp

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ IoGpioRequest()

◆ ~IoGpioRequest()

Member Function Documentation

◆ addInputOffset()

◆ addOutputOffset()

◆ inputOffset()

◆ inputState()

◆ lastOutputState()

◆ outputOffset()

◆ outputState()

◆ read()

◆ write() [1/2]

◆ write() [2/2]

Member Data Documentation

◆ inReq

◆ outReq