keyboard.c File Reference

PS2 keyboard functions. More...

#include "heivs/keyboard.h"
#include "stm32/stm32f4xx_usart.h"
#include "stm32/stm32f4xx_misc.h"
#include "stm32/stm32f4xx_rcc.h"

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Data Structures
struct	PS2Keymap_t
	Structure of the keyboard map. More...

Functions
static void	irq_handler (void)
	Interrupt service method when a key is pressed. More...
static char	get_iso8859_code (uint8_t s)
	Transform the keycode to ascii value. More...
uint8_t	KeyboardRead (void)
	reads the keyboard More...

Variables
static void(*	interruptHandler )(void)
	Inits the PS2 keyboard communication. More...
static const PS2Keymap_t	Keymap_Ascom
	This is the keycode table correspondance.

Detailed Description

PS2 keyboard functions.

Author

Pascal Sartoretti (sap at hevs dot ch)

Definition in file keyboard.c.

Function Documentation

static void irq_handler ( void  )

static

Interrupt service method when a key is pressed.

It fills a table with the received characters

Definition at line 35 of file keyboard.c.

References interruptHandler, and USART2_IRQn.

static char get_iso8859_code ( uint8_t  s )

static

Transform the keycode to ascii value.

Parameters

s	the keycode returned by the keyboard

Returns

the ascii value of corresponding pressed key

It returns 0 if key released or if any special key pressed (shift)

Definition at line 199 of file keyboard.c.

References PS2Keymap_t::altgr, Keymap_Ascom, PS2Keymap_t::noshift, and PS2Keymap_t::shift.

Referenced by KeyboardRead().

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Variable Documentation

void(* interruptHandler) (void)

static

Inits the PS2 keyboard communication.

Parameters

interruptHandler	Interrupt function to call on interrupt, NULL for polling
prio	Priority of interrupt (0[max] - 15[min]) if used

Definition at line 29 of file keyboard.c.

Referenced by irq_handler(), and KeyboardRead().