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Added PIC-an-LCD HD44780 subdriver.

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Currently untested.
This commit is contained in:
robijn
2002-02-07 22:10:04 +00:00
parent 901833b353
commit 15b226483a
6 changed files with 148 additions and 8 deletions
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acinclude.m4
+1 -1
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@@ -116,7 +116,7 @@ dnl else
actdrivers=["$actdrivers lb216"]
;;
hd44780)
DRIVERS="$DRIVERS hd44780.o hd44780-4bit.o hd44780-ext8bit.o lcd_sem.o hd44780-serialLpt.o hd44780-winamp.o"
DRIVERS="$DRIVERS hd44780.o hd44780-4bit.o hd44780-ext8bit.o lcd_sem.o hd44780-serialLpt.o hd44780-winamp.o hd44780-picanlcd.o"
AC_DEFINE(HD44780_DRV)
actdrivers=["$actdrivers hd44780"]
;;
server/drivers/Makefile.am
+1
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@@ -8,6 +8,7 @@ EXTRA_libLCDdrivers_a_SOURCES = MtxOrb.c MtxOrb.h text.c text.h \
hd44780-ext8bit.c hd44780-ext8bit.h lcd_sem.c lcd_sem.h \
hd44780-serialLpt.c hd44780-serialLpt.h \
hd44780-winamp.c hd44780-winamp.h \
hd44780-picanlcd.c hd44780-picanlcd.h \
hd44780-low.h hd44780-drivers.h hd44780-charmap.h \
sed1330.c sed1330.h \
sed1520.c sed1520.h sed1520fm.c \
server/drivers/hd44780-drivers.h
+7 -7
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@@ -15,6 +15,7 @@
#include "hd44780-ext8bit.h"
#include "hd44780-serialLpt.h"
#include "hd44780-winamp.h"
#include "hd44780-picanlcd.h"
// add new connection type header files here
static const ConnectionMapping connectionMapping[] = {
@@ -22,15 +23,14 @@ static const ConnectionMapping connectionMapping[] = {
// string to identify connection on command line
// your initialisation function
// help string for your particular connection
{
"4bit", hd_init_4bit, "\tnone\n"}, {
"8bit", hd_init_ext8bit, "\tnone\n"}, {
"serialLpt", hd_init_serialLpt, "\tnone\n"}, {
"winamp", hd_init_winamp, "\tnone\n"},
{"4bit", hd_init_4bit, "\tnone\n"},
{"8bit", hd_init_ext8bit, "\tnone\n"},
{"serialLpt", hd_init_serialLpt, "\tnone\n"},
{"winamp", hd_init_winamp, "\tnone\n"},
{"picanlcd", hd_init_picanlcd, "\tnone\n"},
// add new connection types and their string specifier here
// default, end of structure element (do not delete)
{
NULL, NULL, NULL}
{NULL, NULL, NULL}
};
#endif
server/drivers/hd44780-low.h
+2
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@@ -47,6 +47,8 @@ typedef struct driver_private_data {
unsigned int port;
int fd; /* for picanlcd connection type */
int width, height;
int cellwidth, cellheight;
server/drivers/hd44780-picanlcd.c
+128
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@@ -0,0 +1,128 @@
/*
* "PIC-an-LCD" serial driver module for Hitachi HD44780 based LCD displays.
*
* Copyright (c) 1997, Matthias Prinke <m.prinke@trashcan.mcnet.de>
* 1998, Richard Rognlie <rrognlie@gamerz.net>
* 1999, Ethan Dicks
* 1999-2000, Benjamin Tse <blt@Comports.com>
* 2001, Rene Wagner
* 2001-2002, Joris Robijn <joris@robijn.net>
*
* This file is released under the GNU General Public License. Refer to the
* COPYING file distributed with this package.
*
* See the PIC-an-LCD documentation for data on how it should be connected
* to the computer.
* http://dalewheat.com/products/PIC-an-LCD/index.html
*
*/
#include "hd44780-picanlcd.h"
#include "hd44780.h"
#include "shared/str.h"
#include "report.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <termios.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
// Generally, any function that accesses the LCD control lines needs to be
// implemented separately for each HW design. This is typically (but not
// restricted to):
// HD44780_senddata
// HD44780_readkeypad
void picanlcd_HD44780_senddata (PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch);
// PIC-an-LCD ASCII commands
//#define PICANLCD_HOME '\001'
//#define PICANLCD_CLR '\014'
#define PICANLCD_LED '\025'
#define PICANLCD_LCDI '\021'
#define PICANLCD_LCDD '\022'
#define DEFAULT_DEVICE "/dev/lcd"
// initialise the driver
int
hd_init_picanlcd (Driver *drvthis)
{
PrivateData *p = (PrivateData*) drvthis->private_data;
struct termios portset;
char device[256] = DEFAULT_DEVICE;
/* READ CONFIG FILE */
/* Get serial device to use */
strncpy(device, drvthis->config_get_string ( drvthis->name , "device" , 0 , DEFAULT_DEVICE),sizeof(device));
device[sizeof(device)-1]=0;
report (RPT_INFO,"HD44780: PC-an-LCD: Using device: %s", device);
// Set up io port correctly, and open it...
p->fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
if (p->fd == -1) {
report(RPT_ERR, "HD44780: PC-an-LCD: could not open device %s (%s)\n", device, strerror(errno));
return -1;
}
/* Get serial device parameters */
tcgetattr(p->fd, &portset);
/* We use RAW mode */
#ifdef HAVE_CFMAKERAW
/* The easy way */
cfmakeraw( &portset );
#else
/* The hard way */
portset.c_iflag &= ~( IGNBRK | BRKINT | PARMRK | ISTRIP
| INLCR | IGNCR | ICRNL | IXON );
portset.c_oflag &= ~OPOST;
portset.c_lflag &= ~( ECHO | ECHONL | ICANON | ISIG | IEXTEN );
portset.c_cflag &= ~( CSIZE | PARENB | CRTSCTS );
portset.c_cflag |= CS8 | CREAD | CLOCAL ;
#endif
/* Set port speed to 9600 baud */
cfsetospeed(&portset, B9600);
/* Set TCSANOW mode of serial device */
tcsetattr(p->fd, TCSANOW, &portset);
p->hd44780_functions->senddata = picanlcd_HD44780_senddata;
common_init (p);
return 0;
}
// picanlcd_HD44780_senddata
void
picanlcd_HD44780_senddata (PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch)
{
static const char data_byte = PICANLCD_LCDD;
static const char instr_byte = PICANLCD_LCDI;
if (flags == RS_DATA) {
// Do we need a DATA indicator byte ?
if( ch < 32 ) {
write( p->fd, &data_byte, 1 );
}
write( p->fd, &ch, 1 );
}
else {
write( p->fd, &instr_byte, 1 );
write( p->fd, &ch, 1 );
}
}
server/drivers/hd44780-picanlcd.h
+9
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@@ -0,0 +1,9 @@
#ifndef HD_PICANLCD_H
#define HD_PICANLCD_H
#include "lcd.h" /* for Driver */
// initialise this particular driver
int hd_init_picanlcd (Driver *drvthis);
#endif