park.borne.impl
Class ClavierImpl

java.lang.Object
  park.borne.impl.ClavierImpl

public final class ClavierImpl

extends java.lang.Object

* configuration du clavier connecté sur PCF8474
*
* C1 C2 C3 C4
* L1 _____|1____|2____|3____|a___ PA0 1 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1
*
* L2 _____|4____|5____|6____|b___ PA1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 1 1
*
* L3 _____|7____|8____|9____|c___ PA2 1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 1
*
* L4 _____|*____|0____|#____|d___ PA3 0 1 1 1 1 1 1 1 1 1 0 0 1 1 1 0
* | | | | ----------------------------------------------
* |_____|_____|_____|____ PA4 1 0 1 1 0 1 1 0 1 1 0 1 1 1 1 1
* | | |
* |_____|_____|____ PA5 0 1 0 1 1 0 1 1 0 1 1 1 1 1 1 1
* | |
* | ____|____ PA6 1 1 1 0 1 1 0 1 1 0 1 0 1 1 1 1
* |
* |____ PA7 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
* ----------------------------------------------
* 0 1 2 3 4 5 6 7 8 9 # a b c d
* codes hexa D7 EE DE BE ED DD BD EB DB BB E7 B7 7E 7D 7B 77
*
* 0..# : clavier 3 X 4
* b : appel gardien
* a, c, d : non utilises
*
* *****************************************************************************
* Methode utilisée: inversion lignes <-> colonnes
* *****************************************************************************
* ecrire 0xF0
* lecture ligne
* si (ligne[1] != MASQUELIGNES) // si touche appuyée
* { // détemination du code de la touche
* ecrire 0x0F
* lecture colonne
* code = (byte)(((byte)ligne[1]) | ((byte)colonne[1]));
* }
* sinon code = PASDAPPUI;
*
* ecriture 0111 0000
* & 0110 0111 touche 1
* ---------
* ligne = 0110 0000
*
* ecriture 0000 1111
* & 0110 0111 touche 1
* ---------
* colonne = 0000 0111
*
* code de la touche = ligne | colonne = 0110 0111

Field Summary

private byte	codeGeoMem
private static byte	MASQUECOLONNES
private static byte	MASQUELIGNES
private static byte	NBRETOUCHES
private static byte	PASDAPPUI
private PCF8574	pCF8574Clav
static byte[][]	TableCodes transcodage code geographique -> code touche
private boolean	touchesRelachees

Constructor Summary

ClavierImpl()

Method Summary

static byte	getCodeTouche(byte codeGeo)
void	init()
void	kill()
byte	readClavier()
byte	scan()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NBRETOUCHES

private static final byte NBRETOUCHES

See Also:

Constant Field Values

PASDAPPUI

private static final byte PASDAPPUI

See Also:

Constant Field Values

MASQUELIGNES

private static final byte MASQUELIGNES

See Also:

Constant Field Values

MASQUECOLONNES

private static final byte MASQUECOLONNES

See Also:

Constant Field Values

codeGeoMem

private byte codeGeoMem

touchesRelachees

private boolean touchesRelachees

pCF8574Clav

private PCF8574 pCF8574Clav

TableCodes

public static final byte[][] TableCodes

transcodage code geographique -> code touche

Constructor Detail

ClavierImpl

public ClavierImpl()

Method Detail

init

public void init()
          throws PortException

Throws:

PortException

kill

public void kill()

readClavier

public byte readClavier()

scan

public byte scan()

getCodeTouche

public static byte getCodeTouche(byte codeGeo)