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/* $Id: drv_EA232graphic.c 840 2007-09-09 12:17:42Z michael $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_EA232graphic.c $
*
* Driver for Electronic Assembly serial graphic display
*
* Copyright (C) 2007 Stefan Gmeiner <stefangmeiner@solnet.ch>
* Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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, or (at your option)
* any later version.
*
* LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* Electronic Assembly RS232 Graphic Displays
*
* This driver supports some of the Electronic Assembly serial graphic displays. Although
* most of this display support higher level operation like text and graphic command, non of
* these are used. Instead the lcd4linux graphic routines creates the graphic which is then
* transferd to the display.
*
* FIXME: Some display have addition features such as GPI which are not yet implemented.
*
* Display Protocol Output Contrast
* ============================================
* GE120-5NV24 1 8 yes
* GE128-6N3V24 1 8 no
* GE128-6N9V24 2 0 yes
* GE128-7KV24 3 8 no
* GE240-6KV24 3 8 no
* GE240-6KCV24 3 8 no
* GE240-7KV24 3 8 no
* GE240-7KLWV24 3 8 no
* GE240-6KLWV24 3 8 no
*
* Supported protocol commands:
*
* Clear
* Protocol Display Set Output Set Contrast Bitmap Orientation
* =======================================================================================
* 1 DL Y(0..7)(0..1) K(0..20) U(x)(y)(w)(h)(...) Vertical
* 2 <ESC>DL -- <ESC>DK(0..63) <ESC>UL(x)(y)(w)(h)(...) Vertical
* 3 DL Y(0..7)(0..1) -- U(x)(y)(w)(h)(...) Horizontal
*
* Bitmap orientation:
*
* Vertical: Byte-No.
* 123456789....
* Bit 0 *********
* Bit 1 *********
* Bit 2 *********
* Bit 3 *********
* Bit 4 *********
* Bit 5 *********
* Bit 6 *********
* Bit 7 *********
*
* Horizontal: Bit-No.
* 76543210
* Byte 0 ********
* Byte 1 ********
* Byte 3 ********
* ...
*
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_EA232graphic
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/time.h>
#include <unistd.h>
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "udelay.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "drv.h"
/* graphic display */
#include "drv_generic_graphic.h"
/* serial port */
#include "drv_generic_serial.h"
/* GPO */
#include "drv_generic_gpio.h"
#define ESC ((char)27)
#define MSB_BYTE 0x80
#define LSB_BYTE 0x01
static char Name[] = "EA232graphic";
typedef struct {
char *name;
int columns;
int rows;
int max_contrast;
int default_contrast;
int gpo;
int protocol;
} MODEL;
static MODEL Models[] = {
/* Protocol 1 models */
{"GE120-5NV24", 120, 32, 20, 8, 8, 1},
{"GE128-6N3V24", 128, 64, 0, 0, 8, 1},
/* Protocol 2 models */
{"GE128-6N9V24", 128, 64, 63, 40, 0, 2},
/* Protocol 3 models */
{"GE128-7KV24", 128, 128, 0, 0, 8, 3},
{"GE240-6KV24", 240, 64, 0, 0, 8, 3},
{"GE240-6KCV24", 240, 64, 0, 0, 8, 3},
{"GE240-7KV24", 240, 128, 0, 0, 8, 3},
{"GE240-7KLWV24", 240, 128, 0, 0, 8, 3},
{"GE240-6KLWV24", 240, 64, 0, 0, 8, 3},
{NULL, 0, 0, 0, 0, 0, 0}
};
static MODEL *Model;
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
static int drv_EA232graphic_open(const char *section)
{
/* open serial port */
/* don't mind about device, speed and stuff, this function will take care of */
if (drv_generic_serial_open(section, Name, 0) < 0)
return -1;
return 0;
}
static int drv_EA232graphic_close(void)
{
drv_generic_serial_close();
return 0;
}
/* write data to the display */
static void drv_EA232graphic_send(const char *data, const int len)
{
drv_generic_serial_write(data, len);
}
/* delete Display */
static void drv_EA232graphic_clear_display()
{
char cmd[3];
switch (Model->protocol) {
case 1:
case 3:
cmd[0] = 'D';
cmd[1] = 'L';
drv_EA232graphic_send(cmd, 2);
break;
case 2:
cmd[0] = ESC;
cmd[1] = 'D';
cmd[2] = 'L';
drv_EA232graphic_send(cmd, 3);
break;
default:
error("%s: undefined protocol type", Name);
return;
}
}
/* copy framebuffer to display */
static void drv_EA232graphic_blit(const int row, const int col, const int height, const int width)
{
int r, c, l, p;
char *cmd;
/* calculate length of command */
l = 0;
switch (Model->protocol) {
case 1:
case 2:
l = ((height + 7) / 8) * width;
break;
case 3:
l = ((width + 7) / 8) * height;
break;
default:
error("%s: undefined protocol type", Name);
return;
}
/* add maximum length of command header */
cmd = (char *) malloc(l + 10);
if (cmd == NULL) {
error("%s: allocation of buffer failed: %s", Name, strerror(errno));
return;
}
p = 0;
/* write command header */
switch (Model->protocol) {
case 1:
case 3:
cmd[p++] = 'U';
cmd[p++] = col;
cmd[p++] = row;
cmd[p++] = width;
cmd[p++] = height;
break;
case 2:
cmd[p++] = ESC;
cmd[p++] = 'U';
cmd[p++] = 'L';
cmd[p++] = col;
cmd[p++] = row;
cmd[p++] = width;
cmd[p++] = height;
break;
default:
error("%s: undefined protocol type", Name);
free(cmd);
return;
}
/* clear all pixels */
memset(cmd + p, 0, l);
/* set pixels */
switch (Model->protocol) {
case 1:
case 2:
for (r = 0; r < height; r++) {
for (c = 0; c < width; c++) {
if (drv_generic_graphic_black(r + row, c + col)) {
cmd[(r / 8) * width + c + p] |= (LSB_BYTE << (r % 8));
}
}
}
break;
case 3:
for (c = 0; c < width; c++) {
for (r = 0; r < height; r++) {
if (drv_generic_graphic_black(r + row, c + col)) {
cmd[(c / 8) * height + r + p] |= (MSB_BYTE >> (c % 8));
}
}
}
break;
default:
error("%s: undefined protocol type", Name);
free(cmd);
return;
}
drv_EA232graphic_send(cmd, p + l);
free(cmd);
}
static int drv_EA232graphic_GPO(const int num, const int val)
{
char cmd[4];
if (Model->gpo == 0) {
error("%s: GPO not supported on this model.", Name);
return -1;
}
if (Model->gpo < num) {
error("%s: GPO %d is not available.", Name, num);
return -1;
}
cmd[0] = 'Y';
cmd[1] = num;
cmd[2] = (val > 0) ? 1 : 0;
drv_EA232graphic_send(cmd, 3);
return 0;
}
/* adjust contast */
static int drv_EA232graphic_contrast(int contrast)
{
char cmd[4];
if (Model->max_contrast == 0) {
error("%s: contrast setting not support by model", Name);
return -1;
}
/* adjust limits according to the display */
if (contrast < 0)
contrast = 0;
if (contrast > Model->max_contrast)
contrast = Model->max_contrast;
switch (Model->protocol) {
case 1:
cmd[0] = 'K';
cmd[1] = contrast;
drv_EA232graphic_send(cmd, 2);
break;
case 2:
cmd[0] = ESC;
cmd[1] = 'D';
cmd[2] = 'K';
cmd[3] = contrast;
drv_EA232graphic_send(cmd, 4);
break;
default:
error("%s: undefined protocol type", Name);
return -1;
}
return contrast;
}
/* start graphic display */
static int drv_EA232graphic_start(const char *section)
{
char *s;
int contrast;
int i;
/* read model from configuration */
s = cfg_get(section, "Model", NULL);
if (s == NULL || *s == '\0') {
error("%s: no '%s.Model' entry from %s", Name, section, cfg_source());
return -1;
}
for (i = 0; Models[i].name != NULL; i++) {
if (strcasecmp(Models[i].name, s) == 0)
break;
}
if (!Models[i].name) {
error("%s: %s.Model '%s' is unknown from %s", Name, section, s, cfg_source());
free(s);
return -1;
}
Model = &Models[i];
info("%s: using model '%s'", Name, Model->name);
free(s);
/* read display size from model configuration */
DROWS = Model->rows;
DCOLS = Model->columns;
/* set number of GPO's from model */
GPOS = Model->gpo;
/* read font size from configuration */
s = cfg_get(section, "Font", "6x8");
if (s == NULL || *s == '\0') {
error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
return -1;
}
XRES = -1;
YRES = -1;
if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
error("%s: bad Font '%s' from %s", Name, s, cfg_source());
free(s);
return -1;
}
/* Fixme: provider other fonts someday... */
if (XRES != 6 && YRES != 8) {
error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
free(s);
return -1;
}
free(s);
/* open communication with the display */
if (drv_EA232graphic_open(section) < 0) {
return -1;
}
/* reset & initialize display */
drv_EA232graphic_clear_display();
if (cfg_number(section, "Contrast", Model->default_contrast, 0, Model->max_contrast, &contrast) > 0) {
drv_EA232graphic_contrast(contrast);
}
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
static void plugin_contrast(RESULT * result, RESULT * arg1)
{
double contrast;
contrast = drv_EA232graphic_contrast(R2N(arg1));
SetResult(&result, R_NUMBER, &contrast);
}
/****************************************/
/*** widget callbacks ***/
/****************************************/
/* using drv_generic_text_draw(W) */
/* using drv_generic_text_icon_draw(W) */
/* using drv_generic_text_bar_draw(W) */
/* using drv_generic_gpio_draw(W) */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_EA232graphic_list(void)
{
int i;
for (i = 0; Models[i].name; i++) {
printf("%s ", Models[i].name);
}
return 0;
}
/* initialize driver & display */
int drv_EA232graphic_init(const char *section, const int quiet)
{
int ret;
/* real worker functions */
drv_generic_graphic_real_blit = drv_EA232graphic_blit;
drv_generic_gpio_real_set = drv_EA232graphic_GPO;
/* start display */
if ((ret = drv_EA232graphic_start(section)) != 0)
return ret;
/* initialize generic graphic driver */
if ((ret = drv_generic_graphic_init(section, Name)) != 0)
return ret;
/* initialize GPO */
if (Model->gpo > 0 && (ret = drv_generic_gpio_init(section, Name)) != 0)
return ret;
if (!quiet) {
char buffer[40];
qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
if (drv_generic_graphic_greet(buffer, NULL)) {
sleep(3);
drv_generic_graphic_clear();
}
}
/* register plugins */
AddFunction("LCD::contrast", 1, plugin_contrast);
return 0;
}
/* close driver & display */
int drv_EA232graphic_quit(const int quiet)
{
info("%s: shutting down.", Name);
/* clear display */
drv_generic_graphic_clear();
/* say goodbye... */
if (!quiet) {
drv_generic_graphic_greet("goodbye!", NULL);
}
drv_generic_graphic_quit();
if (Model->gpo > 0)
drv_generic_gpio_quit();
debug("%s: closing connection", Name);
drv_EA232graphic_close();
return (0);
}
/* use this one for a graphic display */
DRIVER drv_EA232graphic = {
.name = Name,
.list = drv_EA232graphic_list,
.init = drv_EA232graphic_init,
.quit = drv_EA232graphic_quit,
};
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