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/* $Id: drv_MatrixOrbital.c 1140 2011-01-05 03:49:07Z michael $
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* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_MatrixOrbital.c $
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* new style driver for Matrix Orbital serial display modules
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* Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.at>
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* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
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* This file is part of LCD4Linux.
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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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* 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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* 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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* struct DRIVER drv_MatrixOrbital
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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_generic_text.h"
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#include "drv_generic_gpio.h"
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#include "drv_generic_serial.h"
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static char Name[] = "MatrixOrbital";
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static char dispBuffer[4][20];
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/* Fixme #1: number of gpo's should be verified */
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/* Fixme #2: protocol should be verified */
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static MODEL Models[] = {
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{0x01, "LCD0821", 2, 8, 0, 1, 1},
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{0x03, "LCD2021", 2, 20, 0, 1, 1},
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{0x04, "LCD1641", 4, 16, 0, 1, 1},
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{0x05, "LCD2041", 4, 20, 0, 1, 1},
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{0x06, "LCD4021", 2, 40, 0, 1, 1},
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{0x07, "LCD4041", 4, 40, 0, 1, 1},
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{0x08, "LK202-25", 2, 20, 8, 8, 2},
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{0x09, "LK204-25", 4, 20, 8, 8, 2},
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{0x0a, "LK404-55", 4, 40, 8, 8, 2},
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{0x0b, "VFD2021", 2, 20, 0, 1, 1},
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{0x0c, "VFD2041", 4, 20, 0, 1, 1},
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{0x0d, "VFD4021", 2, 40, 0, 1, 1},
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{0x0e, "VK202-25", 2, 20, 0, 1, 1},
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{0x0f, "VK204-25", 4, 20, 0, 1, 1},
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{0x10, "GLC12232", -1, -1, 0, 1, 1},
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{0x13, "GLC24064", -1, -1, 0, 1, 1},
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{0x15, "GLK24064-25", -1, -1, 0, 1, 1},
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{0x22, "GLK12232-25", -1, -1, 0, 1, 1},
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{0x31, "LK404-AT", 4, 40, 8, 8, 2},
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{0x32, "VFD1621", 2, 16, 0, 1, 1},
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{0x33, "LK402-12", 2, 40, 8, 8, 2},
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{0x34, "LK162-12", 2, 16, 8, 8, 2},
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{0x35, "LK204-25PC", 4, 20, 8, 8, 2},
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{0x36, "LK202-24-USB", 2, 20, 8, 8, 2},
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{0x38, "LK204-24-USB", 4, 20, 8, 8, 2},
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{0x39, "VK204-24-USB", 4, 20, 8, 8, 2},
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{0x40, "DE-LD011", 2, 16, 0, 0, 3}, /* Sure electronics USB LCD board Rev.I */
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{0x41, "DE-LD021", 4, 20, 0, 0, 3},
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{0xff, "Unknown", -1, -1, 0, 0, 0}
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/****************************************/
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/*** hardware dependant functions ***/
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/****************************************/
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static void drv_MO_write(const int row, const int col, const char *data, const int len)
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char cmd[5] = "\376Gyx";
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if (Models[Model].protocol == 3) { // Sure electronics USB LCD board - full line output
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cmd[3] = (char) row + 1;
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strncpy(&(dispBuffer[row][col]), data, len);
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drv_generic_serial_write(cmd, 4);
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drv_generic_serial_write(dispBuffer[row], Models[Model].cols);
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cmd[2] = (char) col + 1;
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cmd[3] = (char) row + 1;
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drv_generic_serial_write(cmd, 4);
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drv_generic_serial_write(data, len);
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static void drv_MO_clear(void)
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drv_generic_serial_write("\014", 1); /* Clear Screen */
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drv_generic_serial_write("\376\130", 2); /* Clear Screen */
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/* Sure electronics USB LCD board - clear buffer */
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for (i = 0; i < Models[Model].rows; i++) {
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for (j = 0; j < Models[Model].cols; j++) {
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dispBuffer[i][j] = ' ';
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drv_MO_write(1, i + 1, dispBuffer[i], Models[Model].cols);
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static void drv_MO_defchar(const int ascii, const unsigned char *matrix)
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char cmd[11] = "\376N";
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cmd[2] = (char) ascii;
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for (i = 0; i < 8; i++) {
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cmd[i + 3] = matrix[i] & 0x1f;
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drv_generic_serial_write(cmd, 11);
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static int drv_MO_contrast(int contrast)
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static unsigned char Contrast = 0;
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char cmd[3] = "\376Pn";
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/* -1 is used to query the current contrast */
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drv_generic_serial_write(cmd, 3);
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static int drv_MO_backlight(int backlight)
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static unsigned char Backlight = 0;
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char cmd[3] = "\376Bn";
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/* -1 is used to query the current backlight */
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Backlight = backlight;
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if (backlight <= 0) {
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drv_generic_serial_write("\376F", 2);
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/* backlight on for n minutes */
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drv_generic_serial_write(cmd, 3);
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static int drv_MO_GPI(const int num)
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static int GPI[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
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static time_t T[8], now;
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if (num < 0 || num > 7) {
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/* read RPM every two seconds */
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if (time(&now) - T[num] >= 2) {
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unsigned char ans[7];
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cmd[2] = (char) num + 1;
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drv_generic_serial_write(cmd, 3);
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if (drv_generic_serial_read((char *) ans, 7) == 7) {
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if (ans[0] == 0x23 && ans[1] == 0x2a && ans[2] == 0x03 && ans[3] == 0x52 && ans[4] == num + 1) {
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GPI[num] = 18750000 / (256 * ans[5] + ans[6]);
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error("%s: strange answer %02x %02x %02x %02x %02x %02x %02x", Name, ans[0], ans[1], ans[2], ans[3],
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ans[4], ans[5], ans[6]);
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static int drv_MO_GPO(const int num, const int val)
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drv_generic_serial_write("\376W", 2); /* GPO on */
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drv_generic_serial_write("\376V", 2); /* GPO off */
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cmd[1] = 'V'; /* GPO off */
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cmd[2] = (char) num + 1;
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drv_generic_serial_write(cmd, 3);
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} else if (val >= 255) {
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cmd[1] = 'W'; /* GPO on */
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cmd[2] = (char) num + 1;
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drv_generic_serial_write(cmd, 3);
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cmd[1] = '\300'; /* PWM control */
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cmd[2] = (char) num + 1;
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drv_generic_serial_write(cmd, 4);
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static int drv_MO_start(const char *section, const int quiet)
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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)
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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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info("%s: using model '%s'", Name, Models[Model].name);
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info("%s: no '%s.Model' entry from %s, auto-dedecting", Name, section, cfg_source());
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if (Model != -1 && Models[Model].protocol == 3) { // Sure electronics USB LCD board - full line output
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for (i = 0; i < Models[Model].rows; i++) { // Clear buffer
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for (j = 0; j < Models[Model].cols; j++) {
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dispBuffer[i][j] = ' ';
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if (drv_generic_serial_open(section, Name, 0) < 0)
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if (Model == -1 || Models[Model].protocol > 1) {
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/* read module type */
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drv_generic_serial_write("\3767", 2);
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if (drv_generic_serial_read(buffer, 1) == 1) {
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for (i = 0; Models[i].type != 0xff; i++) {
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if (Models[i].type == (int) *buffer)
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info("%s: display reports model '%s' (type 0x%02x)", Name, Models[i].name, Models[i].type);
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/* auto-dedection matches specified model? */
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if (Models[i].type != 0xff && Model != i) {
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error("%s: %s.Model '%s' from %s does not match dedected Model '%s'", Name, section, model,
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cfg_source(), Models[i].name);
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info("%s: display detection failed.", Name);
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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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GPIS = Models[Model].gpis;
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GPOS = Models[Model].gpos;
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Protocol = Models[Model].protocol;
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/* read serial number */
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drv_generic_serial_write("\3765", 2);
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if (drv_generic_serial_read(buffer, 2) == 2) {
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info("%s: display reports serial number 0x%x", Name, *(short *) buffer);
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/* read version number */
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drv_generic_serial_write("\3766", 2);
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if (drv_generic_serial_read(buffer, 1) == 1) {
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info("%s: display reports firmware version 0x%x", Name, *buffer);
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drv_generic_serial_write("\376B", 3); /* backlight on */
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drv_generic_serial_write("\376K", 2); /* cursor off */
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drv_generic_serial_write("\376T", 2); /* blink off */
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drv_generic_serial_write("\376D", 2); /* line wrapping off */
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drv_generic_serial_write("\376R", 2); /* auto scroll off */
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if (cfg_number(section, "Contrast", 0, 0, 255, &i) > 0) {
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if (cfg_number(section, "Backlight", 0, 0, 255, &i) > 0) {
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if (drv_generic_text_greet(Models[Model].name, "MatrixOrbital")) {
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/****************************************/
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/****************************************/
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static void plugin_contrast(RESULT * result, const int argc, RESULT * argv[])
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contrast = drv_MO_contrast(-1);
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SetResult(&result, R_NUMBER, &contrast);
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contrast = drv_MO_contrast(R2N(argv[0]));
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SetResult(&result, R_NUMBER, &contrast);
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error("%s::contrast(): wrong number of parameters", Name);
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SetResult(&result, R_STRING, "");
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static void plugin_backlight(RESULT * result, const int argc, RESULT * argv[])
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backlight = drv_MO_backlight(-1);
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SetResult(&result, R_NUMBER, &backlight);
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backlight = drv_MO_backlight(R2N(argv[0]));
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SetResult(&result, R_NUMBER, &backlight);
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error("%s::backlight(): wrong number of parameters", Name);
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SetResult(&result, R_STRING, "");
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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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/* using drv_generic_gpio_draw(W) */
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/****************************************/
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/*** exported functions ***/
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/****************************************/
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int drv_MO_list(void)
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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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/* initialize driver & display */
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int drv_MO_init(const char *section, const int quiet)
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info("%s: %s", Name, "$Rev: 1140 $");
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/* display preferences */
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XRES = 5; /* 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 = 0; /* ASCII of first user-defineable char */
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GOTO_COST = 4; /* number of bytes a goto command requires */
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/* real worker functions */
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drv_generic_text_real_write = drv_MO_write;
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drv_generic_text_real_defchar = drv_MO_defchar;
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drv_generic_gpio_real_get = drv_MO_GPI;
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drv_generic_gpio_real_set = drv_MO_GPO;
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if ((ret = drv_MO_start(section, quiet)) != 0)
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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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/* initialize generic icon driver */
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if ((ret = drv_generic_text_icon_init()) != 0)
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/* initialize generic bar driver */
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if ((ret = drv_generic_text_bar_init(0)) != 0)
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/* add fixed chars to the bar driver */
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/* most displays have a full block on ascii 255, but some have kind of */
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/* an 'inverted P'. If you specify 'asc255bug 1 in the config, this */
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/* char will not be used, but rendered by the bar driver */
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cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug);
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drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */
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drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */
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/* initialize generic GPIO driver */
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if ((ret = drv_generic_gpio_init(section, Name)) != 0)
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/* register text widget */
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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.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.draw = drv_generic_text_bar_draw;
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widget_register(&wc);
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/* register plugins */
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AddFunction("LCD::contrast", -1, plugin_contrast);
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AddFunction("LCD::backlight", -1, plugin_backlight);
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/* close driver & display */
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int drv_MO_quit(const int quiet)
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info("%s: shutting down display.", Name);
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drv_generic_text_quit();
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drv_generic_gpio_quit();
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drv_generic_text_greet("goodbye!", NULL);
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drv_generic_serial_close();
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DRIVER drv_MatrixOrbital = {
added
removed
drv_MatrixOrbital.c
