A GPIO implementation using the Linux kernel's GPIO character devices. More...

#include <GpioDevPort.hpp>

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

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

Public Member Functions
	GpioDevPort (const std::string &path="/dev/gpiochip0", unsigned int firstid=0, const std::string &username="DUDS")
	Make a GpioDevPort object with all the pins available to the device. More...

	GpioDevPort (const std::vector< unsigned int > &ids, const std::string &path="/dev/gpiochip0", unsigned int firstid=0, const std::string &username="DUDS")
	Make a GpioDevPort object with the given pins. More...

virtual	~GpioDevPort ()

virtual bool	simultaneousOperations () const
	Simultaneous operations are supported; returns true. More...

Public Member Functions inherited from duds::hardware::interface::DigitalPortIndependentPins
virtual bool	independentConfig () const
	Always true. More...

virtual bool	independentConfig (unsigned int, const DigitalPinConfig &, const DigitalPinConfig &) const
	Always true. More...

Public Member Functions inherited from duds::hardware::interface::DigitalPort
virtual	~DigitalPort ()
	Derived classes should call shutdown() early in their destructors. More...

void	access (const unsigned int pins, const unsigned int len, std::unique_ptr< DigitalPinAccess > acc)
	Obtain access objects to use a set of pins. More...

template<std::size_t Len>
void	access (const unsigned int pins[Len], std::unique_ptr< DigitalPinAccess > acc[Len])

std::unique_ptr< DigitalPinAccess >	access (const unsigned int pin)

void	access (const unsigned int pins, const unsigned int len, DigitalPinAccess acc)
	Obtain access objects to use a set of pins. More...

void	access (const std::vector< unsigned int > &pins, DigitalPinAccess *acc)

template<std::size_t alen, std::size_t plen>
void	access (const unsigned int pins[plen], DigitalPinAccess acc[alen])
	This is a nice idea that may fail at compile time. More...

void	access (const unsigned int *pins, const unsigned int len, DigitalPinSetAccess &acc)
	Obtain access objects to use a set of pins. More...

void	access (const unsigned int begin, const unsigned int end, DigitalPinSetAccess &acc)

void	access (const std::vector< unsigned int > &pins, DigitalPinSetAccess &acc)

std::unique_ptr< DigitalPinSetAccess >	access (const std::vector< unsigned int > &pins)

template<class InputIter >
void	access (const InputIter &begin, const InputIter &end, DigitalPinSetAccess &acc)

DigitalPinCap	capabilities (unsigned int globalPinId) const
	Returns the capabilities of a pin. More...

std::vector< DigitalPinCap >	capabilities () const
	Returns the capabilities of all pins in the port. More...

std::vector< DigitalPinCap >	capabilities (const std::vector< unsigned int > &pvec) const
	Returns the capabilities of all the pins requested by global ID. More...

std::vector< DigitalPinCap >	capabilitiesLocalIds (const std::vector< unsigned int > &pvec) const
	Returns the capabilities of all the pins requested by local ID. More...

DigitalPinConfig	configuration (unsigned int globalPinId) const
	Returns the current configuration of a pin. More...

std::vector< DigitalPinConfig >	configuration () const
	Returns the configuration of all pins in the port. More...

std::vector< DigitalPinConfig >	configuration (const std::vector< unsigned int > &pvec) const
	Returns the configuration of all the pins requested by global ID. More...

std::vector< DigitalPinConfig >	configurationLocalIds (const std::vector< unsigned int > &pvec) const
	Returns the configuration of all the pins requested by local ID. More...

bool	exists (unsigned int gid) const
	Returns true if the pin exists in this port. More...

unsigned int	globalId (unsigned int localId) const
	Returns the global ID for a pin given the local ID. More...

std::vector< unsigned int >	globalIds (const std::vector< unsigned int > &localIds) const
	Converts the provided local pin IDs to global pin IDs. More...

unsigned int	localId (unsigned int globalId) const
	Returns the local ID for a pin given the global ID. More...

std::vector< unsigned int >	localIds (const std::vector< unsigned int > &globalIds) const
	Converts the provided global pin IDs to local pin IDs. More...

unsigned int	offset () const
	Returns the offset for the port's pins. More...

void	poll ()

void	pollInput ()

void	pollSignal ()

DigitalPinRejectedConfiguration::Reason	proposeConfig (unsigned int gid, DigitalPinConfig &pconf, DigitalPinConfig &iconf) const
	Proposes a configuration change for a single pin. More...

DigitalPinRejectedConfiguration::Reason	proposeConfig (unsigned int gid, DigitalPinConfig &pconf) const
	Proposes a configuration change for a single pin from the port's current configuration. More...

bool	proposeConfig (const std::vector< unsigned int > &globalPinIds, std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const

bool	proposeConfig (const std::vector< unsigned int > &pins, std::vector< DigitalPinConfig > &propConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const

bool	proposeConfigLocalIds (const std::vector< unsigned int > &localPinIds, std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const

bool	proposeConfigLocalIds (const std::vector< unsigned int > &pins, std::vector< DigitalPinConfig > &propConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const

bool	proposeFullConfig (std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const

unsigned int	size () const
	The maximum number of pins on the port. More...

Static Public Member Functions
static std::shared_ptr< GpioDevPort >	makeConfiguredPort (PinConfiguration &pc, const std::string &name="default", const std::string &defaultPath="/dev/gpiochip0", bool forceDefault=false)
	Make a GpioDevPort object according to the given configuration, and attach to the configuration. More...

Protected Member Functions
virtual void	configurePort (unsigned int localPinId, const DigitalPinConfig &cfg, DigitalPinAccessBase::PortData *pdata)
	Changes the hardware configuration for a single pin. More...

virtual bool	inputImpl (unsigned int gid, DigitalPinAccessBase::PortData *pdata)
	Reads input from the given pin. More...

virtual std::vector< bool >	inputImpl (const std::vector< unsigned int > &pvec, DigitalPinAccessBase::PortData *pdata)
	Reads input from the requested pins. More...

virtual void	madeAccess (DigitalPinAccess &acc)
	Called after a new access object is made to allow a port implementation to take further action. More...

virtual void	madeAccess (DigitalPinSetAccess &acc)
	Called after a new access object is made to allow a port implementation to take further action. More...

virtual void	outputImpl (unsigned int lid, bool state, DigitalPinAccessBase::PortData *pdata)
	Changes the output state of the given pin. More...

virtual void	outputImpl (const std::vector< unsigned int > &pvec, const std::vector< bool > &state, DigitalPinAccessBase::PortData *pdata)
	Changes the outputs of several pins. More...

virtual void	retiredAccess (const DigitalPinAccess &acc) noexcept
	Called just before an access object is retired to allow a port implementation to take further action. More...

virtual void	retiredAccess (const DigitalPinSetAccess &acc) noexcept
	Called just before an access object is retired to allow a port implementation to take further action. More...

Protected Member Functions inherited from duds::hardware::interface::DigitalPortIndependentPins
	DigitalPortIndependentPins (unsigned int numpins, unsigned int firstid)

virtual void	configurePort (const std::vector< DigitalPinConfig > &cfgs, DigitalPinAccessBase::PortData *pdata)
	Changes the hardware configuration for the whole port by calling configurePort(const DigitalPinConfig &, unsigned int, DigitalPinAccessBase::PortData *) for each pin. More...

virtual DigitalPinRejectedConfiguration::Reason	proposeConfigImpl (unsigned int gid, DigitalPinConfig &pconf, DigitalPinConfig &iconf) const
	Considers the proposed configuration for one pin. More...

virtual bool	proposeConfigImpl (const std::vector< unsigned int > &localPinIds, std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const
	Considers the proposed configuration one pin at a time in the order specified in pins. More...

virtual bool	proposeFullConfigImpl (std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, std::function< void(DigitalPinRejectedConfiguration::Reason)> insertReason=std::function< void(DigitalPinRejectedConfiguration::Reason)>()) const
	Considers the proposed configuration one pin at a time for all pins in the port. More...

Protected Member Functions inherited from duds::hardware::interface::DigitalPort
	DigitalPort (unsigned int numpins, unsigned int firstid)
	Initializes internal data. More...

std::vector< DigitalPinCap >	capabilities (const std::vector< unsigned int > &pvec, bool global) const

const DigitalPinConfig &	configRef (unsigned int localPinId) const
	Returns a reference to a pin's configuration on behalf of an access object. More...

std::vector< DigitalPinConfig >	configuration (const std::vector< unsigned int > &pvec, bool global) const

std::vector< DigitalPinConfig >	configurationImpl () const
	Returns the configuration of all pins in the port. More...

bool	input (unsigned int gid, DigitalPinAccessBase::PortData *pdata)
	Does error checking in advance of calling inputImpl(unsigned int) to read the input of the given pin. More...

std::vector< bool >	input (const std::vector< unsigned int > &pvec, DigitalPinAccessBase::PortData *pdata)
	Does error checking in advance of calling inputImpl(const std::vector<unsigned int> &) to read the input of a set of pins. More...

DigitalPinConfig	modifyConfig (unsigned int globalPinId, const DigitalPinConfig &cfg, DigitalPinAccessBase::PortData *pdata)
	Modifies the configuration of a single pin with an independent configuration. More...

void	modifyConfig (std::vector< DigitalPinConfig > &cfgs, DigitalPinAccessBase::PortData *pdata)
	Modifies the configuration of multiple pins. More...

void	modifyConfig (const std::vector< unsigned int > &pvec, std::vector< DigitalPinConfig > &cfgs, DigitalPinAccessBase::PortData *pdata)

void	modifyFullConfig (std::vector< DigitalPinConfig > &propConf, std::vector< DigitalPinConfig > &initConf, DigitalPinAccessBase::PortData *pdata)
	Does the work of the modifyConfig() functions in the case that the whole port configuration must be considered for possible changes. More...

void	output (unsigned int gid, bool state, DigitalPinAccessBase::PortData *pdata)
	Does error checking in advance of calling outputImpl(unsigned int, bool) to change the output of the given pin. More...

void	output (const std::vector< unsigned int > &pvec, const std::vector< bool > &state, DigitalPinAccessBase::PortData *pdata)
	Does error checking in advance of calling outputImpl(const std::vector<unsigned int> &,const std::vector<bool> &) to change the output of a set of pins. More...

void	shutdown ()
	Waits for access to all pins so that any user of access objects may finish with their operation, then destroys all pin data and awakens threads waiting on access, but they will not receive access. More...

Private Member Functions
void	initPin (std::uint32_t offset, unsigned int pid)
	Initializes a PinEntry with data on a GPIO line. More...

Private Attributes
int	chipFd
	File descriptor for GPIO chip device file. More...

std::string	consumer
	The consumer name given to the kernel when requesting the use of GPIO lines. More...

std::string	devpath
	The path of the device file; retained only for error reporting purposes. More...

std::string	name
	The reported name of the GPIO chip device. More...

Additional Inherited Members
Protected Types inherited from duds::hardware::interface::DigitalPort
typedef std::vector< PinEntry >	PinVector

Static Protected Member Functions inherited from duds::hardware::interface::DigitalPort
static DigitalPinAccessBase::PortData &	portData (const DigitalPinAccessBase &acc)
	Returns a reference to the port specific data in the given DigitalPinAccessBase object. More...

template<typename T >
static void	portDataPtr (const DigitalPinAccessBase &acc, T **ptr)
	Provides a pointer to type T stored in the port specific data of the given DigitalPinAccessBase object. More...

Protected Attributes inherited from duds::hardware::interface::DigitalPort
PinVector	pins
	Data on each pin handled by the port. More...

Detailed Description

A GPIO implementation using the Linux kernel's GPIO character devices.

Limitations:

Input change events (interrupt-like response) are not yet supported.
Port resources are not allocated and kept for the lifespan of DigitalPinAccess and DigitalPinSetAccess objects. Changing pin configuration with the GPIO kernel device requires losing the resource and requesting it again in a non-atomic manner. Another process could hypothetically get the resource, which will result in an exception and a broken access object. I see no way to fully resolve this issue given the current kernel interface.
Kernel interface lacks ability to query pin capabilities.
- This driver assumes all pins have input and output capability.
- Open drain and open source support could be determined by attempting to reconfigure a pin, but this would require changing the state of the port, which may be bad for some hardware.
- Currently the open drain and open source modes are not supported by this driver.
Cannot determine initial output state.
- The driver assumes false (logic zero) is the initial output state. It does not alter the initial state.
- Requesting state of pins cannot be done without first altering them.
  - A request for an output pin makes the pin an output and sets its output state. The kernel does not support maintaining a pin's output state.
- Kernel interface provides no way to query a set output state of a pin configured as an input, and requires the software to provide a new initial output state when configuring a pin as an output.
Kernel interface lacks support for controllable pull-up and pull-down resistors.
Kernel interface offers no query or configuration of output current.

While some hardware may have some or all of these limitations, other hardware does not. Using the Linux kernel GPIO character device will impose these limitations on the system.

It is assumed that the process using this object for a given pin will be the only process on the host using the pin. This should be a fairly safe assumption since it should only be violated by bad behavior.

Author: Jeff Jackowski

Definition at line 92 of file GpioDevPort.hpp.

Constructor & Destructor Documentation

◆ GpioDevPort() [1/2]

duds::hardware::interface::linux::GpioDevPort::GpioDevPort	(	const std::string &	path = `"/dev/gpiochip0"`,
		unsigned int	firstid = `0`,
		const std::string &	username = `"DUDS"`
	)

Make a GpioDevPort object with all the pins available to the device.

If the program will be using a known subset of the pins, the GpioDevPort(const std::vector<unsigned int> &, const std::string &, unsigned int) constructor should be used instead to prevent and find unintentional use of other pins.

Parameters

path	The path to the GPIO device file.
firstid	The gloabl ID that will be assigned to the first pin (local ID zero) of this port.
username	The name provided to the GPIO device for the consumer.

Exceptions

DigitalPortDoesNotExistError	The device file could not be opened, or the request for information on the GPIO device ended in error.
DigitalPortLacksPinError	A request for information on a pin ended in error.

Definition at line 450 of file GpioDevPort.cpp.

◆ GpioDevPort() [2/2]

duds::hardware::interface::linux::GpioDevPort::GpioDevPort	(	const std::vector< unsigned int > &	ids,
		const std::string &	path = `"/dev/gpiochip0"`,
		unsigned int	firstid = `0`,
		const std::string &	username = `"DUDS"`
	)

Make a GpioDevPort object with the given pins.

Todo:: The doc on ids is incorrect; copied from Sysfs. Fix that. Also, maybe change the behavior. Could just specify pins to use and ignore position of pin in the vector.

Parameters

ids	The pin numbers from the filesystem. The index of each inside ids will be the local pin ID used by this port. A value of -1 will create an unavailable pin and may be used multiple times. Other values must only be used once.
path	The path to the GPIO device file.
firstid	The gloabl ID that will be assigned to the first pin (local ID zero) of this port.
username	The name provided to the GPIO device for the consumer.

Exceptions

DigitalPortDoesNotExistError	The device file could not be opened, or the request for information on the GPIO device ended in error.
DigitalPortLacksPinError	A request for information on a pin ended in error.

Definition at line 477 of file GpioDevPort.cpp.

◆ ~GpioDevPort()

duds::hardware::interface::linux::GpioDevPort::~GpioDevPort ( )

virtual

Definition at line 555 of file GpioDevPort.cpp.

Member Function Documentation

◆ configurePort()

void duds::hardware::interface::linux::GpioDevPort::configurePort	(	unsigned int	localPinId,
		const DigitalPinConfig &	cfg,
		DigitalPinAccessBase::PortData *	pdata
	)

protectedvirtual

Changes the hardware configuration for a single pin.

If this function does not throw, its caller will record the configuration change inside pins. It is only called after error checking is performed on its parameters.

Parameters

cfg	The new configuration.
localPinId	The local ID for the pin to modify.
pdata	A pointer to the port specific data stored in the corresponding access object for the pin.

Implements duds::hardware::interface::DigitalPortIndependentPins.

Definition at line 656 of file GpioDevPort.cpp.

◆ initPin()

void duds::hardware::interface::linux::GpioDevPort::initPin	(	std::uint32_t	offset,
		unsigned int	pid
	)

private

Initializes a PinEntry with data on a GPIO line.

Parameters

offset	The line offset for the pin on the GPIO chip device.
pid	The assigned port specific pin ID.

Exceptions

DigitalPortLacksPinError The attempt to obtain information on the GPIO line ended with an error.

Definition at line 560 of file GpioDevPort.cpp.

Referenced by GpioDevPort().

◆ inputImpl() [1/2]

bool duds::hardware::interface::linux::GpioDevPort::inputImpl	(	unsigned int	gid,
		DigitalPinAccessBase::PortData *	pdata
	)

protectedvirtual

Reads input from the given pin.

Precondition: The pin is configured as an input.

Parameters

gid	The global ID of the pin to read.
pdata	A pointer to the port specific data stored in the corresponding access object for the pin.

Implements duds::hardware::interface::DigitalPort.

Definition at line 683 of file GpioDevPort.cpp.

◆ inputImpl() [2/2]

std::vector< bool > duds::hardware::interface::linux::GpioDevPort::inputImpl	(	const std::vector< unsigned int > &	pvec,
		DigitalPinAccessBase::PortData *	pdata
	)

protectedvirtual

Reads input from the requested pins.

The implementation in DigitalPort calls input(unsigned int). This only makes sense for ports that do not support simultaneous operations. An assertion exists to prevent such misuse.

Precondition: All the pins are configured as inputs.

Parameters

pvec	The global IDs of the pins to read.
pdata	A pointer to the port specific data stored in the corresponding access object for the pins.

Returns: The input from the pins.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 697 of file GpioDevPort.cpp.

◆ madeAccess() [1/2]

void duds::hardware::interface::linux::GpioDevPort::madeAccess ( DigitalPinAccess & acc )

protectedvirtual

Called after a new access object is made to allow a port implementation to take further action.

The call is made while there is a lock on block. The default implementation does nothing.

Parameters

acc	The newly made access object.

Exceptions

exception Any thrown exception will cause the access object to be retired and then the exception will be rethrown.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 618 of file GpioDevPort.cpp.

◆ madeAccess() [2/2]

void duds::hardware::interface::linux::GpioDevPort::madeAccess ( DigitalPinSetAccess & acc )

protectedvirtual

Called after a new access object is made to allow a port implementation to take further action.

The call is made while there is a lock on block. The default implementation does nothing.

Parameters

acc	The newly made access object.

Exceptions

exception Any thrown exception will cause the access object to be retired and then the exception will be rethrown.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 622 of file GpioDevPort.cpp.

◆ makeConfiguredPort()

std::shared_ptr< GpioDevPort > duds::hardware::interface::linux::GpioDevPort::makeConfiguredPort	(	PinConfiguration &	pc,
		const std::string &	name = `"default"`,
		const std::string &	defaultPath = `"/dev/gpiochip0"`,
		bool	forceDefault = `false`
	)

static

Make a GpioDevPort object according to the given configuration, and attach to the configuration.

Parameters

pc	The object with the port configuration data.
name	The name of the port in the configuration.
defaultPath	The default path to the port's device file. This will be used if not specified in the configuration.
forceDefault	If true, the value in defaultPath will be used even if the device file is specified in the configuration.

Exceptions

PortDoesNotExistError	There is no port called name in the given configuration.
DigitalPortDoesNotExistError	The device file could not be opened, or the request for information on the GPIO device ended in error.
DigitalPortLacksPinError	A request for information on a pin ended in error.

Examples:: bppmenu.cpp, clockLCD.cpp, rendertext.cpp, and st7920.cpp.

Definition at line 506 of file GpioDevPort.cpp.

◆ outputImpl() [1/2]

void duds::hardware::interface::linux::GpioDevPort::outputImpl	(	unsigned int	lid,
		bool	state,
		DigitalPinAccessBase::PortData *	pdata
	)

protectedvirtual

Changes the output state of the given pin.

If the pin is not configured as an output, its configuration will not change. However, this new state will be the output state once the configuration is changed to output.

Precondition: The pin is capable of output.

Parameters

lid	The local ID of the pin to change.
state	The new output state.
pdata	A pointer to the port specific data stored in the corresponding access object for the pin.

Implements duds::hardware::interface::DigitalPort.

Definition at line 727 of file GpioDevPort.cpp.

◆ outputImpl() [2/2]

void duds::hardware::interface::linux::GpioDevPort::outputImpl	(	const std::vector< unsigned int > &	pvec,
		const std::vector< bool > &	state,
		DigitalPinAccessBase::PortData *	pdata
	)

protectedvirtual

Changes the outputs of several pins.

If any of the pins are not configured as an output, thier configuration will not change. However, this new state will be the output state once the configuration is changed to output.

The implementation in DigitalPort calls output(unsigned int, bool). This only makes sense for ports that do not support simultaneous operations. An assertion exists to prevent such misuse.

Precondition: For all implementations: the vector parameters are the same size.; For all implementations: The pins are capable of output.; For this implementation only: simultaneous operations are not supported.

Parameters

pvec	The local ID of the pins to alter.
state	The new output states.
pdata	A pointer to the port specific data stored in the corresponding access object for the pins.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 748 of file GpioDevPort.cpp.

◆ retiredAccess() [1/2]

void duds::hardware::interface::linux::GpioDevPort::retiredAccess ( const DigitalPinAccess & acc )

protectedvirtualnoexcept

Called just before an access object is retired to allow a port implementation to take further action.

The call is made while there is a lock on block. The default implementation does nothing.

Parameters

acc	The access object that will be retired.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 644 of file GpioDevPort.cpp.

◆ retiredAccess() [2/2]

void duds::hardware::interface::linux::GpioDevPort::retiredAccess ( const DigitalPinSetAccess & acc )

protectedvirtualnoexcept

Called just before an access object is retired to allow a port implementation to take further action.

The call is made while there is a lock on block. The default implementation does nothing.

Parameters

acc	The access object that will be retired.

Reimplemented from duds::hardware::interface::DigitalPort.

Definition at line 650 of file GpioDevPort.cpp.

◆ simultaneousOperations()

bool duds::hardware::interface::linux::GpioDevPort::simultaneousOperations ( ) const

virtual

Simultaneous operations are supported; returns true.

Implements duds::hardware::interface::DigitalPort.

Definition at line 614 of file GpioDevPort.cpp.

Member Data Documentation

◆ chipFd

int duds::hardware::interface::linux::GpioDevPort::chipFd

private

File descriptor for GPIO chip device file.

Definition at line 109 of file GpioDevPort.hpp.

Referenced by configurePort(), GpioDevPort(), initPin(), inputImpl(), outputImpl(), and ~GpioDevPort().

◆ consumer

std::string duds::hardware::interface::linux::GpioDevPort::consumer

private

The consumer name given to the kernel when requesting the use of GPIO lines.

Definition at line 101 of file GpioDevPort.hpp.

Referenced by madeAccess().

◆ devpath

std::string duds::hardware::interface::linux::GpioDevPort::devpath

private

The path of the device file; retained only for error reporting purposes.

Definition at line 105 of file GpioDevPort.hpp.

Referenced by configurePort(), initPin(), inputImpl(), and outputImpl().

◆ name

std::string duds::hardware::interface::linux::GpioDevPort::name

private

The reported name of the GPIO chip device.

Definition at line 96 of file GpioDevPort.hpp.

Referenced by GpioDevPort().

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GpioDevPort() [1/2]

◆ GpioDevPort() [2/2]

◆ ~GpioDevPort()

Member Function Documentation

◆ configurePort()

◆ initPin()

◆ inputImpl() [1/2]

◆ inputImpl() [2/2]

◆ madeAccess() [1/2]

◆ madeAccess() [2/2]

◆ makeConfiguredPort()

◆ outputImpl() [1/2]

◆ outputImpl() [2/2]

◆ retiredAccess() [1/2]

◆ retiredAccess() [2/2]

◆ simultaneousOperations()

Member Data Documentation

◆ chipFd

◆ consumer

◆ devpath

◆ name