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https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
[lcd4linux @ 2004-01-27 06:34:14 by reinelt]
Cwlinux driver portet to NextGeneration (compiles, but not tested!) git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@341 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
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reinelt
343
drv_Cwlinux.c
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343
drv_Cwlinux.c
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/* $Id: drv_Cwlinux.c,v 1.1 2004/01/27 06:34:14 reinelt Exp $
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*
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* new style driver for Cwlinux display modules
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*
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* Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at>
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* Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
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*
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* This file is part of LCD4Linux.
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*
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* LCD4Linux is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LCD4Linux is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Log: drv_Cwlinux.c,v $
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* Revision 1.1 2004/01/27 06:34:14 reinelt
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* Cwlinux driver portet to NextGeneration (compiles, but not tested!)
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*
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*/
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/*
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*
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* exported fuctions:
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*
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* struct DRIVER drv_Cwlinux
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "debug.h"
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#include "cfg.h"
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#include "plugin.h"
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#include "widget.h"
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#include "widget_text.h"
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#include "widget_icon.h"
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#include "widget_bar.h"
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#include "drv.h"
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#include "drv_generic_text.h"
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#include "drv_generic_serial.h"
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static char Name[]="Cwlinux";
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static int Model;
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static int Protocol;
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// Fixme:
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// static int GPO[8];
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static int GPOS;
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typedef struct {
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int type;
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char *name;
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int rows;
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int cols;
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int xres;
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int gpos;
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int protocol;
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} MODEL;
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// Fixme: number of gpo's should be verified
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static MODEL Models[] = {
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{ 0x01, "CW1602", 2, 16, 5, 0, 1 },
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{ 0x02, "CW12232", 4, 40, 6, 0, 2 },
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{ 0xff, "Unknown", -1, -1, -1, -1, -1 }
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};
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// ****************************************
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// *** hardware dependant functions ***
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// ****************************************
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static void drv_CW_goto (int row, int col)
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{
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char cmd[6]="\376Gxy\375";
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cmd[2]=(char)col;
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cmd[3]=(char)row;
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drv_generic_serial_write(cmd, 5);
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}
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static void drv_CW1602_defchar (int ascii, char *buffer)
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{
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int i;
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char cmd[12]="\376Nn12345678\375";
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cmd[2]=(char)(ascii+1);
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for (i=0; i<8; i++) {
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cmd[3+i]=buffer[i];
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}
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drv_generic_serial_write(cmd,12);
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usleep(20); // delay for cw1602 to settle the character defined!
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}
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static void drv_CW12232_defchar (int ascii, char *buffer)
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{
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int i, j;
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char cmd[10]="\376Nn123456\375";
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cmd[2]=(char)(ascii+1);
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// The CW12232 uses a vertical bitmap layout,
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// so we have to 'rotate' the bitmap.
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for (i=0; i<6;i++) {
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cmd[3+i]=0;
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for (j=0; j<8;j++) {
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if (buffer[j] & (1<<(5-i))) {
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cmd[3+i]|=(1<<j);
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}
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}
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}
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drv_generic_serial_write (cmd, 10);
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}
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static int drv_CW_start (char *section)
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{
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int i;
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char *model;
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model=cfg_get(section, "Model", NULL);
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if (model!=NULL && *model!='\0') {
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for (i=0; Models[i].type!=0xff; i++) {
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if (strcasecmp(Models[i].name, model)==0) break;
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}
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if (Models[i].type==0xff) {
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error ("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source());
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return -1;
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}
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Model=i;
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info ("%s: using model '%s'", Name, Models[Model].name);
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} else {
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error ("%s: no '%s.Model' entry from %s", Name, section, cfg_source());
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return -1;
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}
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// open serial port
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if (drv_generic_serial_open(section, Name)<0) return -1;
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// this does not work as I'd expect it...
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#if 0
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// read firmware version
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generic_serial_read(buffer,sizeof(buffer));
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usleep(100000);
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generic_serial_write ("\3761", 2);
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usleep(100000);
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generic_serial_write ("\375", 1);
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usleep(100000);
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if (generic_serial_read(buffer,2)!=2) {
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info ("unable to read firmware version!");
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}
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info ("Cwlinux Firmware %d.%d", (int)buffer[0], (int)buffer[1]);
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#endif
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// initialize global variables
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DROWS = Models[Model].rows;
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DCOLS = Models[Model].cols;
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XRES = Models[Model].xres;
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GPOS = Models[Model].gpos;
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Protocol = Models[Model].protocol;
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#if 0
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drv_generic_serial_write("\376X\375",3); // Clear Display
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#else
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// for some mysterious reason, we have to sleep after
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// the command _and_ after the CMD_END...
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usleep(20);
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drv_generic_serial_write("\376X",2); // Clear Display
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usleep(20);
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drv_generic_serial_write("\375",1); // Command End
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usleep(20);
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#endif
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drv_generic_serial_write ("\376D\375", 3); // auto line wrap off
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drv_generic_serial_write ("\376R\375", 3); // auto scroll off
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drv_generic_serial_write ("\376K\375", 3); // underline cursor off
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drv_generic_serial_write ("\376B\375", 3); // backlight on
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return 0;
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}
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// ****************************************
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// *** plugins ***
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// ****************************************
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static void plugin_backlight (RESULT *result, RESULT *arg1)
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{
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char cmd[5]="\376A_\375";
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double backlight;
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backlight=R2N(arg1);
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if (backlight<0) backlight=0;
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if (backlight>8) backlight=8;
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switch ((int)backlight) {
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case 0:
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drv_generic_serial_write ("\376F\375", 3); // backlight off
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break;
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case 8:
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drv_generic_serial_write ("\376B\375", 3); // backlight on
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break;
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default:
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cmd[2]=(char)backlight;
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drv_generic_serial_write (cmd, 4); // backlight level
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break;
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}
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SetResult(&result, R_NUMBER, &backlight);
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}
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// ****************************************
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// *** widget callbacks ***
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// ****************************************
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// using drv_generic_text_draw(W)
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// using drv_generic_text_icon_draw(W)
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// using drv_generic_text_bar_draw(W)
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// ****************************************
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// *** exported functions ***
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// ****************************************
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// list models
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int drv_CW_list (void)
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{
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int i;
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for (i=0; Models[i].type!=0xff; i++) {
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printf ("%s ", Models[i].name);
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}
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return 0;
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}
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// initialize driver & display
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int drv_CW_init (char *section)
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{
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WIDGET_CLASS wc;
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int ret;
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// display preferences
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XRES = 6; // pixel width of one char
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YRES = 8; // pixel height of one char
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CHARS = 8; // number of user-defineable characters
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CHAR0 = 128; // ASCII of first user-defineable char
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GOTO_COST = 3; // number of bytes a goto command requires
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// real worker functions
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drv_generic_text_real_write = drv_generic_serial_write;
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drv_generic_text_real_goto = drv_CW_goto;
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switch (Protocol) {
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case 1:
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drv_generic_text_real_defchar = drv_CW1602_defchar;
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break;
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case 2:
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drv_generic_text_real_defchar = drv_CW12232_defchar;
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break;
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}
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// start display
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if ((ret=drv_CW_start (section))!=0)
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return ret;
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// initialize generic text driver
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if ((ret=drv_generic_text_init(section, Name))!=0)
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return ret;
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// initialize generic icon driver
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if ((ret=drv_generic_text_icon_init())!=0)
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return ret;
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// initialize generic bar driver
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if ((ret=drv_generic_text_bar_init())!=0)
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return ret;
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// add fixed chars to the bar driver
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drv_generic_text_bar_add_segment (0, 0, 255, 32); // ASCII 32 = blank
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// register text widget
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wc=Widget_Text;
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wc.draw=drv_generic_text_draw;
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widget_register(&wc);
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// register icon widget
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wc=Widget_Icon;
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wc.draw=drv_generic_text_icon_draw;
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widget_register(&wc);
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// register bar widget
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wc=Widget_Bar;
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wc.draw=drv_generic_text_bar_draw;
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widget_register(&wc);
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// register plugins
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AddFunction ("backlight", 1, plugin_backlight);
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return 0;
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}
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// close driver & display
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int drv_CW_quit (void) {
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info("%s: shutting down.", Name);
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drv_generic_serial_close();
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drv_generic_text_quit();
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return (0);
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}
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DRIVER drv_Cwlinux = {
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name: Name,
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list: drv_CW_list,
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init: drv_CW_init,
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quit: drv_CW_quit,
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};
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