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/*
* Project:
* Parallel Port S.Ha.R.K. Project
*
* Module:
* ppDrv.h
*
* 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
*
*/
/* PPDrv.h
header file for par port communication...
*/
/*
* 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: parport.h,v 1.1 2003-03-24 10:51:06 pj Exp $
*/
#include <kernel/kern.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <kernel/func.h>
#include <string.h>
#include <ll/ll.h>
#include <kernel/types.h>
#include <kernel/descr.h>
#include <math.h>
#include <arch/sys/cdefs.h>
__BEGIN_DECLS
/* general defs... */
#define PP_DEBUG 1 /* 1/0 Activate/Disactive internal debugs... */
#define PP_STATS 1 /* 1/0 Activate/Disactive internal statistics... */
/* return value... */
#define FALSE 0
#define TRUE 1
#define TIMEOUT 2
#define PP_BASE_ADR 0x0378 /* std addr for LPT1 */
#define BYTE unsigned char
#define BOOL unsigned char
#define BUF_IDX unsigned int
#define BUF_PNTR unsigned int
#define PIN_MASK unsigned int
#define clock() sys_gettime(NULL)
enum PIN_STATUS { PIN_OFF , PIN_ON } ; /* positive logic: off==0, on==1 */
/*********************************************************************************/
/* PART 1 : LOW LIVEL FUNC */
/* defs used in ppPinDrv....*/
/* for std & pin use of pp... */
#define PP_DATA_REG (PP_BASE_ADR+0) // address of data register
#define PP_STATUS_REG (PP_BASE_ADR+1) // address of status register
#define PP_CONTR_REG (PP_BASE_ADR+2) // address of control regist
/* out data pins... */
#define PP_PIN_D0 0x01 /* pin 2 */
#define PP_PIN_D1 0x02 /* pin 3 */
#define PP_PIN_D2 0x04 /* pin 4 */
#define PP_PIN_D3 0x08 /* pin 5 */
#define PP_PIN_D4 0x10 /* pin 6 */
#define PP_PIN_D5 0x20 /* pin 7 */
#define PP_PIN_D6 0x40 /* pin 8 */
#define PP_PIN_D7 0x80 /* pin 9 */
/* status pins... */
#define PP_PIN_ERROR 0x08 /* pin 15 */
#define PP_PIN_SELECTED 0x10 /* pin 13 */
#define PP_PIN_PAPEROUT 0x20 /* pin 12 */
#define PP_PIN_ACK 0x40 /* pin 10 */
#define PP_PIN_BUSY 0x80 /* pin 11 */
/* control pins... */
#define PP_PIN_DATASTROBE 0x01 /* pin 1 */
#define PP_PIN_AUTOFEED 0x02 /* pin 14 */
#define PP_PIN_INITOUT 0x04 /* pin 16 */
#define PP_PIN_SELECT 0x08 /* pin 17 */
/* Data i/o */
#define ppSetDataByte(a) outp(PP_DATA_REG,a)
#define ppReadDataByte() inp(PP_DATA_REG)
/* this is NOT bidirectional actually: simply read value that I myself wrote on parport early...*/
/* in std lpt you cannot lay down electric pin D0,D1,..D7 from extern and read value in pc...*/
/* this (in std lpt) will broke down lpt port!... */
/* there are obviously also bi-dir port on 8 bit (ECC & ECP) but ctrl & status pins have */
/* different meaning so we don't manage them... See docs. */
/* Data pins */
void ppSetDataPin(int state, PIN_MASK pin); /* in ppPinDrv.c */
#define ppSetPin_D0(a) ppSetDataPin(a,PP_PIN_D0) /* On ==1 , Off == 0 */
#define ppSetPin_D1(a) ppSetDataPin(a,PP_PIN_D1)
#define ppSetPin_D2(a) ppSetDataPin(a,PP_PIN_D2)
#define ppSetPin_D3(a) ppSetDataPin(a,PP_PIN_D3)
#define ppSetPin_D4(a) ppSetDataPin(a,PP_PIN_D4)
#define ppSetPin_D5(a) ppSetDataPin(a,PP_PIN_D5)
#define ppSetPin_D6(a) ppSetDataPin(a,PP_PIN_D6)
#define ppSetPin_D7(a) ppSetDataPin(a,PP_PIN_D7)
/* Status pins */
#define ppCheckPin_Error() (inp(PP_STATUS_REG & PP_PIN_ERROR)!=0?1:0)
#define ppCheckPin_Selected() (inp(PP_STATUS_REG & PP_PIN_SELECTED)!=0?1:0)
#define ppCheckPin_PaperOut() (inp(PP_STATUS_REG & PP_PIN_PAPEROUT)!=0?1:0)
#define ppCheckPin_Acknowledge() (inp(PP_STATUS_REG & PP_PIN_ACK)!=0?1:0)
#define ppCheckPin_Busy() (inp(PP_STATUS_REG & PP_PIN_BUSY)!=0?0:1) /* act low...*/
/* Control pins */
/* Control i/o */
#define ppSetCtrlByte(a) outp(PP_CONTR_REG,a)
#define ppReadCtrlByte() inp(PP_CONTR_REG)
/* idem...*/
void ppSetCtrlPin(int state, PIN_MASK pin); /* in ppPinDrv.c */
#define ppSetPin_DataStrobe(a) ppSetCtrlPin(!a,PP_PIN_DATASTROBE) /* low active...*/
#define ppSetPin_Autofeed(a) ppSetCtrlPin(!a,PP_PIN_AUTOFEED) /* low active...*/
#define ppSetPin_InitOut(a) ppSetCtrlPin(a,PP_PIN_INITOUT)
#define ppSetPin_Select(a) ppSetCtrlPin(!a,PP_PIN_SELECT) /* low active...*/
/*********************************************************************************/
/* PART 2 : DATA TRANSFER BETWEEN PC */
/* defs used in ppDrv & ppNRTDrv... */
#define PPDRV_PERIOD 1000 /* 300000 ok for debug...*/
#define PPDRV_WCET 150 /* lower bound: 120; more if debug & stats are on...*/
#define PP_BUF_LEN 1024 /* between 2^2 and 2^16 (64k) */
#define CLK_TIMEOUT 55000 /* timeout for sync pc-pc...*/
/* for laplink use of std pp... */
#define TX_PORT PP_BASE_ADR /* transmit port */
#define RX_PORT TX_PORT+1 /* receive port */
/* laplink bit mask */
#define TX_DATA 0x0F /* 0000 1111 pin 2,3,4,5 */
#define TX_CTR 0x10 /* 0001 0000 bit 4 port TX pin 6*/
#define RX_DATA 0x78 /* 0111 1000 pin 15,13,12,10 */
#define RX_CTR 0x80 /* 1000 0000 bit 7 port RX pin 11*/
#define LSN 0x0F /* 0000 1111 low significative nibble */
#define MSN 0xF0 /* 1111 0000 most significative nibble */
#define BYTE_CTR 0xAF /* 1010 1111 control char */
/* comm protocol */
#define ppSendRTS() ppSetOnPinTX_CTR()
#define ppIsRTS() ppReadIfPinRX_CTRIsOn()
#define ppSendOTS() ppSetOnPinTX_CTR()
#define ppIsOTS() ppReadIfPinRX_CTRIsOn()
#define ppSendDR() ppSetOffPinTX_CTR()
#define ppIsDR() ppReadIfPinRX_CTRIsOff()
#define ppSendER() ppSetOffPinTX_CTR()
#define ppIsER() ppReadIfPinRX_CTRIsOff()
#define ppSetOnPinTX_CTR() outp(TX_PORT,(inp(TX_PORT)|TX_CTR)) /* used by: ppSendRTS ppSendOTS */
#define ppSetOffPinTX_CTR() outp(TX_PORT,(inp(TX_PORT)&(~TX_CTR))) /* used by: ppSendDR ppSendER */
#define ppReadIfPinRX_CTRIsOn() ((((~inp(RX_PORT))&RX_CTR)==0)?FALSE:TRUE)
#define ppReadIfPinRX_CTRIsOff() (((BYTE)((~RX_CTR)|(~inp(RX_PORT)))==0x7F)?TRUE:FALSE)
/* Funct Return Code */
enum PP_COMM_RTR_CODE {
PP_COMM_OK,
PP_COMM_NOREADYBYTES_EXC,
PP_COMM_NOFREEBYTES_EXC
};
/* Funct Return Code */
enum PP_SYSMSG_RTR_CODE {
PP_SYSMSG_OK,
PP_NOSYSMSG_EXC,
PP_NOFREEMSG_EXC
};
/* NON REAL TIME (== BLOCK) functions...*/
/* from ppNRTDrv.c...*/
BOOL ppNRTOpenComm(void);
BOOL ppNRTWaitRTS(void);
BOOL ppNRTWaitDR(void);
BOOL ppNRTWaitOTS(void);
BOOL ppNRTWaitER(void);
BOOL ppNRTTxOneByte(BYTE c);
BOOL ppNRTRxOneByte(BYTE *c);
/* REAL TIME (== NON BLOCK) POLLING SERVER */
/* from ppDrv.c... */
void ppInitDrv(void (*pf)(char *)); /* NRT: to be called before start ppPollingSrv...*/
TASK ppPollingSvr(void *arg); /* periodic task to be started before any call to Rx/Tx...*/
/* input output function */
int ppRxOneByte(BYTE *c); /* retrive 1 byte */
int ppTxOneByte(BYTE c); /* send 1 byte */
int ppRxBytes(BYTE *c, unsigned int nbyte); /* retrive n byte... */
int ppTxBytes(BYTE *c, unsigned int nbyte); /* send n byte... */
/* System msg */
#define SYS_MSG_COLS 33
#define SYS_MSG_LINS 15
int ppReadSysMsg(char * buf);
int ppWriteSysMsg(char * buf, ...);
__END_DECLS