buttondriver.h File Reference

This file defines the button interface provided by the 20732 core. More...

Data Structures
struct	ButtonData
	Button run time data. More...

Typedefs
typedef struct ButtonData	ButtonData
	Button run time data.

Functions
void	btn_wakeupDisable (void)
	This file defines the button interface provided by the 20732 core. More...
void	btn_wakeupEnable (void)
	Enable wakeup from all buttons. Also clear any pending events.
UINT16	btn_getCurrentState (void)
	Return the current button state as a bit mapped value. More...
UINT16	btn_flush (void)
	Flush any queued button activity in FW or HW and returns the current state of the buttons. More...
BOOL32	btn_eventsPending (void)
	Returns whether there are any pending unprocessed button events. More...
void	btn_registerForInterrupt (void(*userfn)(void *), void *userdata)
	Register for notification of changes. More...
void	btn_init (void)
	Initialize the button driver.
void	btn_processEvent (KeyEvent *event)
	Process the provided button (keyscan) event.

Detailed Description

This file defines the button interface provided by the 20732 core.

Buttons are implemented as keys on the 20732. A scan matrix of 1 row, n cols is created and scanned by the key scan hardware. The hardware reports the state of the buttons as keys. This information is translated by the button interface into a byte representing various buttons