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| Rev | Author | Line No. | Line |
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| 20 | pj | 1 | /* |
| 2 | * |
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| 3 | * Project: |
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| 4 | * Parallel Port S.Ha.R.K. Project |
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| 5 | * |
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| 6 | * Module: |
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| 7 | * ppPinDrv.c |
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| 8 | * |
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| 9 | * Description: |
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| 10 | * file contents description |
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| 11 | * |
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| 12 | * Coordinators: |
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| 13 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 14 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 15 | * |
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| 16 | * Authors: |
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| 17 | * Andrea Battistotti <btandrea@libero.it> |
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| 18 | * Armando Leggio <a_leggio@hotmail.com> |
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| 19 | * |
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| 20 | * |
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| 21 | * http://www.sssup.it |
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| 22 | * http://retis.sssup.it |
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| 23 | * http://shark.sssup.it |
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| 24 | * |
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| 25 | */ |
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| 26 | |||
| 27 | /******************************************************************************************* |
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| 28 | * Module : ppPinDrv.c |
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| 29 | * Author : Andrea Battistotti , Armando Leggio |
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| 30 | * Description: Set On/Off single pin of LPT1... |
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| 31 | * 2002 @ Pavia - GNU Copyrights |
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| 32 | *******************************************************************************************/ |
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| 33 | |||
| 34 | /* |
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| 35 | * Copyright (C) 2002 Andrea Battistotti , Armando Leggio |
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| 36 | * |
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| 37 | * This program is free software; you can redistribute it and/or modify |
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| 38 | * it under the terms of the GNU General Public License as published by |
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| 39 | * the Free Software Foundation; either version 2 of the License, or |
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| 40 | * (at your option) any later version. |
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| 41 | * |
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| 42 | * This program is distributed in the hope that it will be useful, |
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| 43 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 44 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 45 | * GNU General Public License for more details. |
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| 46 | * |
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| 47 | * You should have received a copy of the GNU General Public License |
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| 48 | * along with this program; if not, write to the Free Software |
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| 49 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 50 | * |
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| 51 | * CVS : $Id: pppindrv.c,v 1.1 2002-10-28 08:03:55 pj Exp $ |
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| 52 | */ |
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| 53 | |||
| 54 | |||
| 55 | /******************************************************************************************* |
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| 56 | * A standard PC provides for three printer ports, at the following base addresses: |
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| 57 | * |
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| 58 | * LPT1 = 0x0378 or 0x03BC |
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| 59 | * LPT2 = 0x0278 or 0x0378 |
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| 60 | * LPT3 = 0x0278 |
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| 61 | * |
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| 62 | * This module assumes that LPT1 is at 0x0378. |
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| 63 | * |
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| 64 | * The printer port has three 8-bit registers: |
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| 65 | * |
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| 66 | * Data Register (base + 0) ........ outputs |
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| 67 | * |
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| 68 | * 7 6 5 4 3 2 1 0 |
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| 69 | * . . . . . . . * D0 ........... (pin 2), 1=High, 0=Low (true) |
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| 70 | * . . . . . . * . D1 ........... (pin 3), 1=High, 0=Low (true) |
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| 71 | * . . . . . * . . D2 ........... (pin 4), 1=High, 0=Low (true) |
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| 72 | * . . . . * . . . D3 ........... (pin 5), 1=High, 0=Low (true) |
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| 73 | * . . . * . . . . D4 ........... (pin 6), 1=High, 0=Low (true) |
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| 74 | * . . * . . . . . D5 ........... (pin 7), 1=High, 0=Low (true) |
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| 75 | * . * . . . . . . D6 ........... (pin 8), 1=High, 0=Low (true) |
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| 76 | * * . . . . . . . D7 ........... (pin 9), 1=High, 0=Low (true) |
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| 77 | * |
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| 78 | * Status Register (base + 1) ...... inputs |
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| 79 | * |
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| 80 | * 7 6 5 4 3 2 1 0 |
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| 81 | * . . . . . * * * Undefined |
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| 82 | * . . . . * . . . Error ........ (pin 15), high=1, low=0 (true) |
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| 83 | * . . . * . . . . Selected ..... (pin 13), high=1, low=0 (true) |
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| 84 | * . . * . . . . . No paper ..... (pin 12), high=1, low=0 (true) |
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| 85 | * . * . . . . . . Ack .......... (pin 10), high=1, low=0 (true) |
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| 86 | * * . . . . . . . Busy ......... (pin 11), high=0, low=1 (inverted) |
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| 87 | * |
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| 88 | * Control Register (base + 2) ..... outputs |
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| 89 | * |
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| 90 | * 7 6 5 4 3 2 1 0 |
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| 91 | * . . . . . . . * Strobe ....... (pin 1), 1=low, 0=high (inverted) |
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| 92 | * . . . . . . * . Auto Feed .... (pin 14), 1=low, 0=high (inverted) |
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| 93 | * . . . . . * . . Initialize ... (pin 16), 1=high, 0=low (true) |
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| 94 | * . . . . * . . . Select ....... (pin 17), 1=low, 0=high (inverted) |
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| 95 | * * * * * . . . . Unused |
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| 96 | * |
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| 97 | * Pins 18-25 are ground. |
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| 98 | ********************************************************************************************/ |
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| 99 | |||
| 100 | #include <drivers/parport.h> |
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| 101 | |||
| 102 | |||
| 103 | void ppSetDataPin(int state, PIN_MASK pin) |
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| 104 | { |
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| 105 | BYTE port; |
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| 106 | port=ppReadDataByte(); |
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| 107 | switch (state) |
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| 108 | { |
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| 109 | case PIN_OFF: port &= ~pin; |
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| 110 | case PIN_ON: port |= pin; |
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| 111 | } |
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| 112 | ppSetDataByte(port); |
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| 113 | } |
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| 114 | |||
| 115 | |||
| 116 | void ppSetCtrlPin(int state, PIN_MASK pin) |
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| 117 | { |
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| 118 | BYTE port; |
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| 119 | port=ppReadCtrlByte(); |
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| 120 | switch (state) |
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| 121 | { |
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| 122 | case PIN_OFF: port &= ~pin; |
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| 123 | case PIN_ON: port |= pin; |
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| 124 | } |
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| 125 | ppSetCtrlByte(port); |
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| 126 | } |
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| 127 |