DUNE::Hardware::Buttons Class Reference

Public Member Functions
	Buttons (const std::string &source_dev)
void	poll (double timeout)
bool	changed (unsigned btn)
bool	value (unsigned btn)

Constructor & Destructor Documentation

Buttons()

DUNE::Hardware::Buttons::Buttons

(

const std::string &

source_dev

)

Constructor.

Parameters

[in]

source_dev

path for the input event device file (for example /dev/input/event0)

Member Function Documentation

changed()

bool DUNE::Hardware::Buttons::changed ( unsigned  btn )

inline

Check if a button changed state.

Parameters

[in]

btn

button number.

Returns

true if changed state, false otherwise.

poll()

void DUNE::Hardware::Buttons::poll

(

double

timeout

)

Wait for new input.

Parameters

[in]

timeout

timeout in seconds, negative for no timeout.

References DUNE::IO::Poll::poll(), and value().

value()

bool DUNE::Hardware::Buttons::value ( unsigned  btn )

inline

Get the button state.

Parameters

[in]

btn

button number.

Returns

true if pressed, false otherwise.

Referenced by poll().

Collaboration diagram for DUNE::Hardware::Buttons: