but.c File Reference

Button implementation. More...

#include <msp430.h>
#include "but.h"
#include "nwk.h"

Include dependency graph for but.c:

Go to the source code of this file.

Macros
#define	BUT_SW0BIT   BIT2
	Bit on with switch 0 is wired, port 1.2.

Typedefs
typedef enum but_state	but_state
	States for the button control.

Enumerations
enum	but_state { BUT_S_IDLE, BUT_S_PRESSED, BUT_S_DEBOUNCE }
	States for the button control. More...

Functions
void	but_init ()
	This function initializes the button control variables. More...
UInt16	but_proccess ()
	This function processes the tasks of the button control. More...
void	but_clearPending ()
	This function clear pending button presses.
UInt8	but_getPending ()
	This function get number of button presses on the time window. More...
void	BUT_ISR ()
	Button Interrupt Service Request on port 1. More...

Variables
but_state	but_currentState = BUT_S_IDLE
	Current state of the button control. More...
UInt32	but_presses
	Button presses over time, one bit for each press, shift left over time.
UInt8	but_pendingPress
	Number of button presses, it is cleared by but_clearPending.

Detailed Description

Button implementation.

Process button presses and store the count on an interval.

Definition in file but.c.

Enumeration Type Documentation

enum but_state

States for the button control.

Enumerator
BUT_S_IDLE	Waiting for button press.
BUT_S_PRESSED	Button was pressed.
BUT_S_DEBOUNCE	Timeout to avoid bounce counting.

Definition at line 54 of file but.c.

Variable Documentation

but_state but_currentState = BUT_S_IDLE

Current state of the button control.

Definition at line 83 of file but.c.

Referenced by but_init(), BUT_ISR(), and but_proccess().