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/*
* c't-Sim - Robotersimulator fuer den c't-Bot
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your
* option) any later version.
* This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307, USA.
*
*/
/*! @file shift.h
* @brief Routinen zur Ansteuerung der Shift-Register
* @author Benjamin Benz (bbe@heise.de)
* @date 20.12.05
*/
#ifndef SHIFT_H_
#define SHIFT_H_
#define SHIFT_LATCH (1<<1) /*!< Clock to store Data into shiftregister */
#define SHIFT_REGISTER_DISPLAY 0x04 /*!< Port-Pin for shiftregister latch (display) */
#define SHIFT_REGISTER_LED 0x10 /*!< Port-Pin for shiftregister latch (leds) */
#define SHIFT_REGISTER_ENA 0x08 /*!< Port-Pin for shiftregister latch (enable) */
/*!
* Initialisert die Shift-Register
*/
void shift_init(void);
/*!
* Schiebt Daten durch eines der drei 74HC595-Schieberegister
* Achtung: den Port sollte man danach noch per shift_clear() zuruecksetzen!
* @param data Das Datenbyte
* @param latch_data der Pin, an dem der Daten-latch-Pin des Registers (PIN 11) haengt
* @param latch_store der Pin, an dem der latch-Pin zum Transfer des Registers (PIN 12) haengt
*/
void shift_data_out(uint8 data, uint8 latch_data, uint8 latch_store);
/*!
* Schiebt Daten durch eines der drei 74HC595-Schieberegister,
* vereinfachte Version, braucht kein shift_clear().
* Funktioniert NICHT fuer das Shift-Register, an dem das Display haengt!!!
* @param data Das Datenbyte
* @param latch_data der Pin, an dem der Daten-latch-Pin des Registers (PIN 11) haengt
*/
void shift_data(uint8 data, uint8 latch_data);
/*!
* Setzt die Shift-Register wieder zurueck
*/
void shift_clear(void);
#endif
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