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/*
*
* Project:
* Parallel Port S.Ha.R.K. Project
*
* Module:
* ppPinDrv.c
*
* Description:
* file contents description
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors:
* Andrea Battistotti <btandrea@libero.it>
* Armando Leggio <a_leggio@hotmail.com>
*
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*
*/
/*******************************************************************************************
* Module : ppPinDrv.c
* Author : Andrea Battistotti , Armando Leggio
* Description: Set On/Off single pin of LPT1...
* 2002 @ Pavia - GNU Copyrights
*******************************************************************************************/
/*
* Copyright (C) 2002 Andrea Battistotti , Armando Leggio
*
* 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
*
* CVS : $Id: pppindrv.c,v 1.1 2002-10-28 08:03:55 pj Exp $
*/
/*******************************************************************************************
* A standard PC provides for three printer ports, at the following base addresses:
*
* LPT1 = 0x0378 or 0x03BC
* LPT2 = 0x0278 or 0x0378
* LPT3 = 0x0278
*
* This module assumes that LPT1 is at 0x0378.
*
* The printer port has three 8-bit registers:
*
* Data Register (base + 0) ........ outputs
*
* 7 6 5 4 3 2 1 0
* . . . . . . . * D0 ........... (pin 2), 1=High, 0=Low (true)
* . . . . . . * . D1 ........... (pin 3), 1=High, 0=Low (true)
* . . . . . * . . D2 ........... (pin 4), 1=High, 0=Low (true)
* . . . . * . . . D3 ........... (pin 5), 1=High, 0=Low (true)
* . . . * . . . . D4 ........... (pin 6), 1=High, 0=Low (true)
* . . * . . . . . D5 ........... (pin 7), 1=High, 0=Low (true)
* . * . . . . . . D6 ........... (pin 8), 1=High, 0=Low (true)
* * . . . . . . . D7 ........... (pin 9), 1=High, 0=Low (true)
*
* Status Register (base + 1) ...... inputs
*
* 7 6 5 4 3 2 1 0
* . . . . . * * * Undefined
* . . . . * . . . Error ........ (pin 15), high=1, low=0 (true)
* . . . * . . . . Selected ..... (pin 13), high=1, low=0 (true)
* . . * . . . . . No paper ..... (pin 12), high=1, low=0 (true)
* . * . . . . . . Ack .......... (pin 10), high=1, low=0 (true)
* * . . . . . . . Busy ......... (pin 11), high=0, low=1 (inverted)
*
* Control Register (base + 2) ..... outputs
*
* 7 6 5 4 3 2 1 0
* . . . . . . . * Strobe ....... (pin 1), 1=low, 0=high (inverted)
* . . . . . . * . Auto Feed .... (pin 14), 1=low, 0=high (inverted)
* . . . . . * . . Initialize ... (pin 16), 1=high, 0=low (true)
* . . . . * . . . Select ....... (pin 17), 1=low, 0=high (inverted)
* * * * * . . . . Unused
*
* Pins 18-25 are ground.
********************************************************************************************/
#include <drivers/parport.h>
void ppSetDataPin(int state, PIN_MASK pin)
{
BYTE port;
port=ppReadDataByte();
switch (state)
{
case PIN_OFF: port &= ~pin;
case PIN_ON: port |= pin;
}
ppSetDataByte(port);
}
void ppSetCtrlPin(int state, PIN_MASK pin)
{
BYTE port;
port=ppReadCtrlByte();
switch (state)
{
case PIN_OFF: port &= ~pin;
case PIN_ON: port |= pin;
}
ppSetCtrlByte(port);
}