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/* $Id: drv_T6963.c 1136 2010-11-28 16:07:16Z mzuther $
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* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_T6963.c $
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* new style driver for T6963-based displays
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* Copyright (C) 2003 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_T6963
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#include "drv_generic_graphic.h"
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#include "drv_generic_parport.h"
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static char Name[] = "T6963";
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static MODEL Models[] = {
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/* font width of display */
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/* text rows/columns */
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static int TROWS, TCOLS;
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/* SingleScan or DualScan */
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static int DualScan = 0;
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static int T_ACC, T_OH, T_PW, T_DH, T_CDS;
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static unsigned char SIGNAL_CE;
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static unsigned char SIGNAL_CD;
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static unsigned char SIGNAL_RD;
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static unsigned char SIGNAL_WR;
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unsigned char *Buffer1, *Buffer2;
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/****************************************/
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/*** hardware dependant functions ***/
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/****************************************/
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/* perform normal status check */
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static void drv_T6_status1(void)
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/* turn off data line drivers */
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drv_generic_parport_direction(1);
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/* lower CE and RD */
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drv_generic_parport_control(SIGNAL_CE | SIGNAL_RD, 0);
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/* wait for STA0=1 and STA1=1 */
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debug("hang in status1");
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} while ((drv_generic_parport_read() & 0x03) != 0x03);
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drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
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/* Output Hold Time */
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/* turn on data line drivers */
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drv_generic_parport_direction(0);
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/* perform status check in "auto mode" */
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static void drv_T6_status2(void)
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/* turn off data line drivers */
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drv_generic_parport_direction(1);
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/* lower RD and CE */
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drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, 0);
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/* wait for STA3=1 */
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debug("hang in status2");
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} while ((drv_generic_parport_read() & 0x08) != 0x08);
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drv_generic_parport_control(SIGNAL_RD | SIGNAL_CE, SIGNAL_RD | SIGNAL_CE);
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/* Output Hold Time */
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/* turn on data line drivers */
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drv_generic_parport_direction(0);
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static void drv_T6_write_cmd(const unsigned char cmd)
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/* wait until the T6963 is idle */
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/* put data on DB1..DB8 */
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drv_generic_parport_data(cmd);
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/* lower WR and CE */
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0);
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
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static void drv_T6_write_data(const unsigned char data)
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/* wait until the T6963 is idle */
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/* put data on DB1..DB8 */
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drv_generic_parport_data(data);
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drv_generic_parport_control(SIGNAL_CD, 0);
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/* lower WR and CE */
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0);
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
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drv_generic_parport_control(SIGNAL_CD, SIGNAL_CD);
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static void drv_T6_write_auto(const unsigned char data)
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/* wait until the T6963 is idle */
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/* put data on DB1..DB8 */
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drv_generic_parport_data(data);
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drv_generic_parport_control(SIGNAL_CD, 0);
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/* lower WR and CE */
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, 0);
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drv_generic_parport_control(SIGNAL_WR | SIGNAL_CE, SIGNAL_WR | SIGNAL_CE);
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drv_generic_parport_control(SIGNAL_CD, SIGNAL_CD);
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static void drv_T6_send_byte(const unsigned char cmd, const unsigned char data)
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drv_T6_write_data(data);
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drv_T6_write_cmd(cmd);
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static void drv_T6_send_word(const unsigned char cmd, const unsigned short data)
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drv_T6_write_data(data & 0xff);
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drv_T6_write_data(data >> 8);
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drv_T6_write_cmd(cmd);
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static void drv_T6_clear(const unsigned short addr, const int len)
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drv_T6_send_word(0x24, addr); /* Set Adress Pointer */
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drv_T6_write_cmd(0xb0); /* Set Data Auto Write */
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for (i = 0; i < len; i++) {
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drv_T6_write_auto(0x0);
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debug("bug occurred at byte %d of %d", i, len);
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drv_T6_write_cmd(0xb2); /* Auto Reset */
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static void drv_T6_copy(const unsigned short addr, const unsigned char *data, const int len)
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drv_T6_send_word(0x24, addr); /* Set Adress Pointer */
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drv_T6_write_cmd(0xb0); /* Set Data Auto Write */
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for (i = 0; i < len; i++) {
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drv_T6_write_auto(*(data++));
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debug("bug occurred at byte %d of %d, addr=%d", i, len, addr);
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drv_T6_write_cmd(0xb2); /* Auto Reset */
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static void drv_T6_blit(const int row, const int col, const int height, const int width)
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for (r = row; r < row + height; r++) {
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for (c = col; c < col + width; c++) {
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unsigned char mask = 1 << (CELL - 1 - c % CELL);
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if (drv_generic_graphic_black(r, c)) {
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Buffer1[(r * DCOLS + c) / CELL] |= mask;
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Buffer1[(r * DCOLS + c) / CELL] &= ~mask;
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a = (r * DCOLS + col) / CELL;
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b = (r * DCOLS + col + width + CELL - 1) / CELL;
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for (i = a; i <= b; i++) {
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if (Buffer1[i] == Buffer2[i])
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for (j = i, e = 0; i <= b; i++) {
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if (Buffer1[i] == Buffer2[i]) {
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if (DualScan && r >= DROWS / 2) {
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base = 0x8200 - DCOLS * DROWS / 2 / CELL;
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memcpy(Buffer2 + j, Buffer1 + j, n);
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drv_T6_copy(base + j, Buffer1 + j, n);
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static int drv_T6_start(const char *section)
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model = cfg_get(section, "Model", "generic");
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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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error("%s: empty '%s.Model' entry from %s", Name, section, cfg_source());
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/* read display size from config */
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s = cfg_get(section, "Size", NULL);
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if (s == NULL || *s == '\0') {
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error("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
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if (sscanf(s, "%dx%d", &DCOLS, &DROWS) != 2 || DCOLS < 1 || DROWS < 1) {
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error("%s: bad Size '%s' from %s", Name, s, cfg_source());
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if (sscanf(s = cfg_get(section, "font", "6x8"), "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
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error("%s: bad %s.Font '%s' from %s", Name, section, s, cfg_source());
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/* get font width of display */
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cfg_number(section, "Cell", 6, 5, 8, &CELL);
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TROWS = DROWS / 8; /* text rows */
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TCOLS = DCOLS / CELL; /* text columns */
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/* get DualScan mode */
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cfg_number(section, "DualScan", 0, 0, 1, &DualScan);
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info("%s: %dx%d %sScan %d bits/cell", Name, DCOLS, DROWS, DualScan ? "Dual" : "Single", CELL);
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Buffer1 = malloc(TCOLS * DROWS);
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if (Buffer1 == NULL) {
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error("%s: framebuffer #1 could not be allocated: malloc() failed", Name);
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Buffer2 = malloc(TCOLS * DROWS);
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if (Buffer2 == NULL) {
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error("%s: framebuffer #2 could not be allocated: malloc() failed", Name);
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memset(Buffer1, 0, TCOLS * DROWS * sizeof(*Buffer1));
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memset(Buffer2, 0, TCOLS * DROWS * sizeof(*Buffer2));
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if (drv_generic_parport_open(section, Name) != 0) {
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error("%s: could not initialize parallel port!", Name);
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if ((SIGNAL_CE = drv_generic_parport_wire_ctrl("CE", "STROBE")) == 0xff)
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if ((SIGNAL_CD = drv_generic_parport_wire_ctrl("CD", "SLCTIN")) == 0xff)
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if ((SIGNAL_RD = drv_generic_parport_wire_ctrl("RD", "AUTOFD")) == 0xff)
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if ((SIGNAL_WR = drv_generic_parport_wire_ctrl("WR", "INIT")) == 0xff)
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T_ACC = timing(Name, section, "ACC", 150, "ns"); /* Access Time */
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T_OH = timing(Name, section, "OH", 50, "ns"); /* Output Hold Time */
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T_PW = timing(Name, section, "PW", 80, "ns"); /* CE, RD, WR Pulse Width */
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T_DH = timing(Name, section, "DH", 40, "ns"); /* Data Hold Time */
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T_CDS = timing(Name, section, "CDS", 100, "ns"); /* C/D Setup Time */
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/* rise CE, CD, RD and WR */
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drv_generic_parport_control(SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR,
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SIGNAL_CE | SIGNAL_CD | SIGNAL_RD | SIGNAL_WR);
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/* set direction: write */
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drv_generic_parport_direction(0);
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/* initialize display */
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drv_T6_send_word(0x40, 0x0000); /* Set Text Home Address */
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drv_T6_send_word(0x41, TCOLS); /* Set Text Area */
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drv_T6_send_word(0x42, 0x0200); /* Set Graphic Home Address */
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drv_T6_send_word(0x43, TCOLS); /* Set Graphic Area */
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drv_T6_write_cmd(0x80); /* Mode Set: OR mode, Internal CG RAM mode */
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drv_T6_send_word(0x22, 0x0002); /* Set Offset Register */
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drv_T6_write_cmd(0x98); /* Set Display Mode: Curser off, Text off, Graphics on */
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drv_T6_write_cmd(0xa0); /* Set Cursor Pattern: 1 line cursor */
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drv_T6_send_word(0x21, 0x0000); /* Set Cursor Pointer to (0,0) */
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drv_T6_clear(0x0000, TCOLS * TROWS / 2); /* clear text area */
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drv_T6_clear(0x0200, TCOLS * TROWS * 8 / 2); /* clear graphic area */
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drv_T6_clear(0x8000, TCOLS * TROWS / 2); /* clear text area */
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drv_T6_clear(0x8200, TCOLS * TROWS * 8 / 2); /* clear graphic area */
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drv_T6_clear(0x0000, TCOLS * TROWS); /* clear text area */
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drv_T6_clear(0x0200, TCOLS * TROWS * 8); /* clear graphic area */
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/****************************************/
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/****************************************/
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/* none at the moment... */
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/****************************************/
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/*** exported functions ***/
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/****************************************/
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int drv_T6_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_T6_init(const char *section, const int quiet)
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info("%s: %s", Name, "$Rev: 1136 $");
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/* real worker functions */
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drv_generic_graphic_real_blit = drv_T6_blit;
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if ((ret = drv_T6_start(section)) != 0)
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/* initialize generic graphic driver */
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if ((ret = drv_generic_graphic_init(section, Name)) != 0)
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qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
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if (drv_generic_graphic_greet(buffer, NULL)) {
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drv_generic_graphic_clear();
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/* register plugins */
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/* none at the moment... */
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/* close driver & display */
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int drv_T6_quit(const int quiet)
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info("%s: shutting down.", Name);
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drv_generic_graphic_clear();
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drv_generic_graphic_greet("goodbye!", NULL);
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drv_generic_graphic_quit();
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drv_generic_parport_close();
added
removed
drv_T6963.c
