Rev 8 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 8 | pj | 1 | /* |
| 2 | * Project: |
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| 3 | * Parallel Port S.Ha.R.K. Project |
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| 4 | * |
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| 5 | * Module: |
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| 6 | * ppDrv.h |
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| 7 | * |
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| 8 | * Description: |
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| 9 | * file contents description |
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| 10 | * |
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| 11 | * Coordinators: |
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| 12 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 13 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 14 | * |
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| 15 | * Authors: |
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| 16 | * Andrea Battistotti <btandrea@libero.it> |
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| 17 | * Armando Leggio <a_leggio@hotmail.com> |
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| 18 | * |
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| 19 | * |
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| 20 | * http://www.sssup.it |
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| 21 | * http://retis.sssup.it |
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| 22 | * http://shark.sssup.it |
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| 23 | * |
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| 24 | */ |
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| 25 | |||
| 26 | /* PPDrv.h |
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| 27 | header file for par port communication... |
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| 28 | */ |
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| 29 | |||
| 30 | /* |
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| 31 | * Copyright (C) 2002 Andrea Battistotti , Armando Leggio |
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| 32 | * |
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| 33 | * This program is free software; you can redistribute it and/or modify |
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| 34 | * it under the terms of the GNU General Public License as published by |
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| 35 | * the Free Software Foundation; either version 2 of the License, or |
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| 36 | * (at your option) any later version. |
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| 37 | * |
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| 38 | * This program is distributed in the hope that it will be useful, |
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| 39 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 40 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 41 | * GNU General Public License for more details. |
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| 42 | * |
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| 43 | * You should have received a copy of the GNU General Public License |
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| 44 | * along with this program; if not, write to the Free Software |
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| 45 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 46 | * |
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| 47 | * CVS : $Id: parport.h,v 1.1 2002-10-28 07:52:11 pj Exp $ |
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| 48 | */ |
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| 49 | |||
| 50 | #include <kernel/kern.h> |
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| 51 | #include <drivers/glib.h> |
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| 52 | #include <drivers/keyb.h> |
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| 53 | #include <time.h> |
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| 54 | #include <stdio.h> |
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| 55 | #include <stdlib.h> |
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| 56 | #include <kernel/func.h> |
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| 57 | #include <string.h> |
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| 58 | #include <ll/ll.h> |
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| 59 | #include <kernel/types.h> |
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| 60 | #include <kernel/descr.h> |
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| 61 | #include <math.h> |
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| 62 | |||
| 63 | |||
| 64 | /* general defs... */ |
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| 65 | #define PP_DEBUG 1 /* 1/0 Activate/Disactive internal debugs... */ |
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| 66 | #define PP_STATS 1 /* 1/0 Activate/Disactive internal statistics... */ |
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| 67 | |||
| 68 | /* return value... */ |
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| 69 | #define FALSE 0 |
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| 70 | #define TRUE 1 |
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| 71 | #define TIMEOUT 2 |
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| 72 | |||
| 73 | #define PP_BASE_ADR 0x0378 /* std addr for LPT1 */ |
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| 74 | |||
| 75 | #define BYTE unsigned char |
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| 76 | #define BOOL unsigned char |
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| 77 | #define BUF_IDX unsigned int |
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| 78 | #define BUF_PNTR unsigned int |
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| 79 | #define PIN_MASK unsigned int |
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| 80 | |||
| 81 | #define clock() sys_gettime(NULL) |
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| 82 | |||
| 83 | enum PIN_STATUS { PIN_OFF , PIN_ON } ; /* positive logic: off==0, on==1 */ |
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| 84 | |||
| 85 | /*********************************************************************************/ |
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| 86 | /* PART 1 : LOW LIVEL FUNC */ |
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| 87 | |||
| 88 | /* defs used in ppPinDrv....*/ |
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| 89 | /* for std & pin use of pp... */ |
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| 90 | #define PP_DATA_REG (PP_BASE_ADR+0) // address of data register |
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| 91 | #define PP_STATUS_REG (PP_BASE_ADR+1) // address of status register |
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| 92 | #define PP_CONTR_REG (PP_BASE_ADR+2) // address of control regist |
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| 93 | |||
| 94 | /* out data pins... */ |
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| 95 | #define PP_PIN_D0 0x01 /* pin 2 */ |
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| 96 | #define PP_PIN_D1 0x02 /* pin 3 */ |
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| 97 | #define PP_PIN_D2 0x04 /* pin 4 */ |
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| 98 | #define PP_PIN_D3 0x08 /* pin 5 */ |
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| 99 | #define PP_PIN_D4 0x10 /* pin 6 */ |
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| 100 | #define PP_PIN_D5 0x20 /* pin 7 */ |
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| 101 | #define PP_PIN_D6 0x40 /* pin 8 */ |
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| 102 | #define PP_PIN_D7 0x80 /* pin 9 */ |
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| 103 | |||
| 104 | /* status pins... */ |
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| 105 | #define PP_PIN_ERROR 0x08 /* pin 15 */ |
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| 106 | #define PP_PIN_SELECTED 0x10 /* pin 13 */ |
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| 107 | #define PP_PIN_PAPEROUT 0x20 /* pin 12 */ |
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| 108 | #define PP_PIN_ACK 0x40 /* pin 10 */ |
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| 109 | #define PP_PIN_BUSY 0x80 /* pin 11 */ |
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| 110 | |||
| 111 | /* control pins... */ |
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| 112 | #define PP_PIN_DATASTROBE 0x01 /* pin 1 */ |
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| 113 | #define PP_PIN_AUTOFEED 0x02 /* pin 14 */ |
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| 114 | #define PP_PIN_INITOUT 0x04 /* pin 16 */ |
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| 115 | #define PP_PIN_SELECT 0x08 /* pin 17 */ |
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| 116 | |||
| 117 | /* Data i/o */ |
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| 118 | #define ppSetDataByte(a) outp(PP_DATA_REG,a) |
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| 119 | #define ppReadDataByte() inp(PP_DATA_REG) |
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| 120 | /* this is NOT bidirectional actually: simply read value that I myself wrote on parport early...*/ |
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| 121 | /* in std lpt you cannot lay down electric pin D0,D1,..D7 from extern and read value in pc...*/ |
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| 122 | /* this (in std lpt) will broke down lpt port!... */ |
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| 123 | /* there are obviously also bi-dir port on 8 bit (ECC & ECP) but ctrl & status pins have */ |
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| 124 | /* different meaning so we don't manage them... See docs. */ |
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| 125 | |||
| 126 | /* Data pins */ |
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| 127 | void ppSetDataPin(int state, PIN_MASK pin); /* in ppPinDrv.c */ |
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| 128 | #define ppSetPin_D0(a) ppSetDataPin(a,PP_PIN_D0) /* On ==1 , Off == 0 */ |
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| 129 | #define ppSetPin_D1(a) ppSetDataPin(a,PP_PIN_D1) |
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| 130 | #define ppSetPin_D2(a) ppSetDataPin(a,PP_PIN_D2) |
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| 131 | #define ppSetPin_D3(a) ppSetDataPin(a,PP_PIN_D3) |
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| 132 | #define ppSetPin_D4(a) ppSetDataPin(a,PP_PIN_D4) |
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| 133 | #define ppSetPin_D5(a) ppSetDataPin(a,PP_PIN_D5) |
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| 134 | #define ppSetPin_D6(a) ppSetDataPin(a,PP_PIN_D6) |
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| 135 | #define ppSetPin_D7(a) ppSetDataPin(a,PP_PIN_D7) |
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| 136 | |||
| 137 | /* Status pins */ |
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| 138 | #define ppCheckPin_Error() (inp(PP_STATUS_REG & PP_PIN_ERROR)!=0?1:0) |
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| 139 | #define ppCheckPin_Selected() (inp(PP_STATUS_REG & PP_PIN_SELECTED)!=0?1:0) |
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| 140 | #define ppCheckPin_PaperOut() (inp(PP_STATUS_REG & PP_PIN_PAPEROUT)!=0?1:0) |
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| 141 | #define ppCheckPin_Acknowledge() (inp(PP_STATUS_REG & PP_PIN_ACK)!=0?1:0) |
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| 142 | #define ppCheckPin_Busy() (inp(PP_STATUS_REG & PP_PIN_BUSY)!=0?0:1) /* act low...*/ |
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| 143 | |||
| 144 | /* Control pins */ |
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| 145 | /* Control i/o */ |
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| 146 | #define ppSetCtrlByte(a) outp(PP_CONTR_REG,a) |
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| 147 | #define ppReadCtrlByte() inp(PP_CONTR_REG) |
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| 148 | /* idem...*/ |
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| 149 | void ppSetCtrlPin(int state, PIN_MASK pin); /* in ppPinDrv.c */ |
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| 150 | #define ppSetPin_DataStrobe(a) ppSetCtrlPin(!a,PP_PIN_DATASTROBE) /* low active...*/ |
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| 151 | #define ppSetPin_Autofeed(a) ppSetCtrlPin(!a,PP_PIN_AUTOFEED) /* low active...*/ |
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| 152 | #define ppSetPin_InitOut(a) ppSetCtrlPin(a,PP_PIN_INITOUT) |
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| 153 | #define ppSetPin_Select(a) ppSetCtrlPin(!a,PP_PIN_SELECT) /* low active...*/ |
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| 154 | |||
| 155 | |||
| 156 | |||
| 157 | |||
| 158 | /*********************************************************************************/ |
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| 159 | /* PART 2 : DATA TRANSFER BETWEEN PC */ |
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| 160 | /* defs used in ppDrv & ppNRTDrv... */ |
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| 161 | #define PPDRV_PERIOD 1000 /* 300000 ok for debug...*/ |
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| 162 | #define PPDRV_WCET 150 /* lower bound: 120; more if debug & stats are on...*/ |
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| 163 | #define PP_BUF_LEN 1024 /* between 2^2 and 2^16 (64k) */ |
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| 164 | #define CLK_TIMEOUT 55000 /* timeout for sync pc-pc...*/ |
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| 165 | |||
| 166 | /* for laplink use of std pp... */ |
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| 167 | #define TX_PORT PP_BASE_ADR /* transmit port */ |
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| 168 | #define RX_PORT TX_PORT+1 /* receive port */ |
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| 169 | |||
| 170 | /* laplink bit mask */ |
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| 171 | #define TX_DATA 0x0F /* 0000 1111 pin 2,3,4,5 */ |
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| 172 | #define TX_CTR 0x10 /* 0001 0000 bit 4 port TX pin 6*/ |
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| 173 | #define RX_DATA 0x78 /* 0111 1000 pin 15,13,12,10 */ |
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| 174 | #define RX_CTR 0x80 /* 1000 0000 bit 7 port RX pin 11*/ |
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| 175 | #define LSN 0x0F /* 0000 1111 low significative nibble */ |
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| 176 | #define MSN 0xF0 /* 1111 0000 most significative nibble */ |
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| 177 | #define BYTE_CTR 0xAF /* 1010 1111 control char */ |
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| 178 | |||
| 179 | |||
| 180 | /* comm protocol */ |
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| 181 | #define ppSendRTS() ppSetOnPinTX_CTR() |
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| 182 | #define ppIsRTS() ppReadIfPinRX_CTRIsOn() |
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| 183 | #define ppSendOTS() ppSetOnPinTX_CTR() |
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| 184 | #define ppIsOTS() ppReadIfPinRX_CTRIsOn() |
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| 185 | #define ppSendDR() ppSetOffPinTX_CTR() |
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| 186 | #define ppIsDR() ppReadIfPinRX_CTRIsOff() |
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| 187 | #define ppSendER() ppSetOffPinTX_CTR() |
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| 188 | #define ppIsER() ppReadIfPinRX_CTRIsOff() |
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| 189 | |||
| 190 | |||
| 191 | #define ppSetOnPinTX_CTR() outp(TX_PORT,(inp(TX_PORT)|TX_CTR)) /* used by: ppSendRTS ppSendOTS */ |
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| 192 | #define ppSetOffPinTX_CTR() outp(TX_PORT,(inp(TX_PORT)&(~TX_CTR))) /* used by: ppSendDR ppSendER */ |
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| 193 | #define ppReadIfPinRX_CTRIsOn() ((((~inp(RX_PORT))&RX_CTR)==0)?FALSE:TRUE) |
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| 194 | #define ppReadIfPinRX_CTRIsOff() (((BYTE)((~RX_CTR)|(~inp(RX_PORT)))==0x7F)?TRUE:FALSE) |
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| 195 | |||
| 196 | /* Funct Return Code */ |
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| 197 | enum PP_COMM_RTR_CODE { |
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| 198 | PP_COMM_OK, |
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| 199 | PP_COMM_NOREADYBYTES_EXC, |
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| 200 | PP_COMM_NOFREEBYTES_EXC |
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| 201 | }; |
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| 202 | |||
| 203 | /* Funct Return Code */ |
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| 204 | enum PP_SYSMSG_RTR_CODE { |
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| 205 | PP_SYSMSG_OK, |
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| 206 | PP_NOSYSMSG_EXC, |
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| 207 | PP_NOFREEMSG_EXC |
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| 208 | }; |
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| 209 | |||
| 210 | /* NON REAL TIME (== BLOCK) functions...*/ |
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| 211 | /* from ppNRTDrv.c...*/ |
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| 212 | BOOL ppNRTOpenComm(void); |
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| 213 | BOOL ppNRTWaitRTS(void); |
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| 214 | BOOL ppNRTWaitDR(void); |
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| 215 | BOOL ppNRTWaitOTS(void); |
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| 216 | BOOL ppNRTWaitER(void); |
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| 217 | BOOL ppNRTTxOneByte(BYTE c); |
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| 218 | BOOL ppNRTRxOneByte(BYTE *c); |
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| 219 | |||
| 220 | |||
| 221 | /* REAL TIME (== NON BLOCK) POLLING SERVER */ |
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| 222 | /* from ppDrv.c... */ |
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| 223 | void ppInitDrv(void (*pf)(char *)); /* NRT: to be called before start ppPollingSrv...*/ |
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| 224 | TASK ppPollingSvr(void *arg); /* periodic task to be started before any call to Rx/Tx...*/ |
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| 225 | |||
| 226 | /* input output function */ |
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| 227 | int ppRxOneByte(BYTE *c); /* retrive 1 byte */ |
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| 228 | int ppTxOneByte(BYTE c); /* send 1 byte */ |
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| 229 | |||
| 230 | int ppRxBytes(BYTE *c, unsigned int nbyte); /* retrive n byte... */ |
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| 231 | int ppTxBytes(BYTE *c, unsigned int nbyte); /* send n byte... */ |
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| 232 | |||
| 233 | |||
| 234 | /* System msg */ |
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| 235 | #define SYS_MSG_COLS 33 |
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| 236 | #define SYS_MSG_LINS 15 |
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| 237 | |||
| 238 | |||
| 239 | int ppReadSysMsg(char * buf); |
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| 240 | int ppWriteSysMsg(char * buf, ...); |
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| 241 |