Keyboard processing

Presentation

Functions
int	kbdStart (unsigned char fls)
	start waiting for a key More...
int	kbdStop (void)
	stop waiting for a key More...
char	kbdKey (void)
	get a key pressed More...

Function Documentation

int kbdStart

(

unsigned char

fls

)

start waiting for a key

Start waiting for a key. This function should be called when an application is ready to accept a user input. The keys waiting in the buffer are flushed if fls is not zero.

Parameters

fls	(I) Indicates whether key flush is to be done

Returns

non-negative value if OK; negative otherwise Utilities.h Peripherals.c

int kbdStop

(

void

)

stop waiting for a key

Stop waiting for a key. All the keys pressed after calling this function will be ignored.

Returns

0 Utilities.h Peripherals.c

char kbdKey

(

void

)

get a key pressed

Retrieve a key pressed if any. Return its key code.

Returns

• Key code according to eKbd enum.
• If no key pressed zero value is returned.
• In case of error it returns 0xFF. Utilities.h Peripherals.c