From 0af867f6a5b60f1259792b1222a23b48039e3282 Mon Sep 17 00:00:00 2001 From: reinelt Date: Wed, 4 May 2005 05:42:38 +0000 Subject: [lcd4linux @ 2005-05-04 05:42:37 by reinelt] Noritake driver added git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@539 3ae390bd-cb1e-0410-b409-cd5a39f66f1f --- drv_Noritake.c | 335 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 335 insertions(+) create mode 100644 drv_Noritake.c (limited to 'drv_Noritake.c') diff --git a/drv_Noritake.c b/drv_Noritake.c new file mode 100644 index 0000000..5cd19ae --- /dev/null +++ b/drv_Noritake.c @@ -0,0 +1,335 @@ +/* $Id: drv_Noritake.c,v 1.1 2005/05/04 05:42:38 reinelt Exp $ + * + * Driver for a Noritake GU128x32-311 graphical display. + * + * Copyright (C) 2005 Julien Aube + * Copyright (C) 2005 The LCD4Linux Team + * + * 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. + * + * $Log: drv_Noritake.c,v $ + * Revision 1.1 2005/05/04 05:42:38 reinelt + * Noritake driver added + * + */ + +/* + * *** Noritake Itron GU128x32-311 *** + * A 128x32 VFD (Vacuum Fluorescent Display). + * It is driver by a Hitachi microcontroller, with a specific + * firmware. + * The datasheet can be easily found on the internet by searching for the + * the name of the display, it's a PDF file that describe the timing, and + * the protocol to communicate with the Hitachi microcontroller. + * + * The display support 2 modes (that can be mutiplexed), one text mode + * thanks to an integrated character generator, and provide 4 lines of + * 21 caracters. + * There is also a graphical mode that can be used to switch on or off + * each one if the 128x32 pixels. (monochrome). + * + * The protocol include the possibility to clear the display memory quickly, + * change the luminosity, swich the display on or off (without affecting the + * content of the memory) and finally change the "page" or the caracter + * generator. Two pages are available in the ROM, all the characters are + * listed in the documentation. + * + * This driver support only the character mode at the moment. + * A future release will support the graphical mode as an option. + * + * This driver is released under the GPL. + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_Noritake + * + */ + +#include "config.h" + +#include +#include +#include + +#include "debug.h" +#include "cfg.h" +#include "qprintf.h" +#include "plugin.h" +#include "widget.h" +#include "widget_text.h" +#include "widget_icon.h" +#include "widget_bar.h" +#include "drv.h" +#include "udelay.h" +#include "drv_generic_text.h" +#include "drv_generic_parport.h" +#include + + + +static char Name[]="Noritake"; +static unsigned char SIGNAL_CS; /* Chip select, OUTPUT, negative logic, pport AUTOFEED */ +static unsigned char SIGNAL_WR; /* Write OUTPUT, negative logic, pport STOBE */ +static unsigned char SIGNAL_RESET; /* Reset, OUTPUT, negative logic, pport INIT */ +static unsigned char SIGNAL_BLANK; /* Blank, OUTPUT , negative logic, pport SELECT-IN */ +static unsigned char SIGNAL_BUSY; /* Busy, INPUT , positive logic, pport BUSY,*/ +static unsigned char SIGNAL_FRP; /* Frame Pulse, INPUT , positive logic, pport ACK, not used */ +void (*drv_Noritake_clear) (void) ; + +/* Data port is positive logic */ + + +/****************************************/ +/*** hardware dependant functions ***/ +/****************************************/ + +/* Low-level parport driving functions */ + +static void drv_GU311_wait_busy(void) +{ + char c; + + c = drv_generic_parport_status(); + while ( (c & SIGNAL_BUSY) == 0 ) + { + ndelay(200); /* Wait 100ns before next consultation of BUSY line + if the first one was not successful */ + c = drv_generic_parport_status(); + } +} + +static void drv_GU311_send_char(char c) +{ + //drv_GU311_wait_busy(); /* ensuite the display is ready to take the command */ + /* Disabled because all the cables does not have the busy line linked. */ + drv_generic_parport_data(c); + ndelay(30); /* delay to ensure data line stabilisation on long cables */ + drv_generic_parport_control(SIGNAL_WR,0); /* write line to enable */ + ndelay(150); /* data hold time */ + drv_generic_parport_control(SIGNAL_WR,0xff); /* write line to disable */ + ndelay(75); /* From spec : minimum time before next command */ +} + +static void drv_GU311_send_string(char * str, int size) +{ + int i; + for (i=0;i 0x57 ) return; + if ( len > 0x57 ) return ; + + cmd[2] = start_addr; + cmd[3] = len; + + memcpy(cmd+5,data,len); + + drv_GU311_send_string(cmd,len+5); + +} + +/* API functions */ + +static void drv_GU311_clear (void) +{ + static char clear_cmd[] = { 0x01, 'O', 'P' }; + drv_GU311_send_string( clear_cmd, sizeof(clear_cmd) ); + ndelay(500); /* Delay for execution - this command is the longuest */ +} + + +static void drv_GU311_write (const int row, const int col, const char *data, int len) +{ + drv_GU311_make_text_string(row,col,data, len); +} + + +static void drv_GU311_reset (void) +{ + drv_generic_parport_control(SIGNAL_RESET,0); /* initiate reset */ + ndelay(1000); /* reset hold time 1ms */ + drv_generic_parport_control(SIGNAL_RESET,0xff); + ndelay(200000); /* reset ready time 200ms */ + +} + + +static int drv_GU311_start(const char *section, const int quiet) +{ + char cmd[3] = { 0x01, 'O' }; + DROWS = 4; + DCOLS = 21; + /* real worker functions */ + drv_generic_text_real_write = drv_GU311_write; + drv_Noritake_clear = drv_GU311_clear; + + /* Parallel port opening and association */ + if (drv_generic_parport_open(section, Name) < 0) return -1; + if ((SIGNAL_CS=drv_generic_parport_hardwire_ctrl ("CS", "AUTOFD"))==0xff) return -1; + if ((SIGNAL_WR=drv_generic_parport_hardwire_ctrl ("WR", "STROBE"))==0xff) return -1; + if ((SIGNAL_RESET=drv_generic_parport_hardwire_ctrl ("RESET", "INIT"))==0xff) return -1; + if ((SIGNAL_BLANK=drv_generic_parport_hardwire_ctrl ("BLANK", "SELECT") )==0xff) return -1; + SIGNAL_BUSY=PARPORT_STATUS_BUSY; + SIGNAL_FRP=PARPORT_STATUS_ACK; + + /* Signals configuration */ + drv_generic_parport_direction(0); /* parallel port in output mode */ + drv_generic_parport_control(SIGNAL_CS|SIGNAL_WR|SIGNAL_RESET|SIGNAL_BLANK, 0xff); + /* All lines to "deactivate", -> 1 level on the wire */ + drv_generic_parport_control(SIGNAL_CS,0); /* CS to 0 all the time, write done by WR */ + drv_GU311_reset(); + + /* Ready for commands from now on. */ + + /* Display configuration */ + cmd[2] = '0' ; drv_GU311_send_string(cmd, sizeof(cmd) ); /* Select char. page 0 */ + cmd[2] = 'Q' ; drv_GU311_send_string(cmd, sizeof(cmd) ); /* Select 'Quick Mode' */ + cmd[2] = 'a' ; drv_GU311_send_string(cmd, sizeof(cmd) ); /* Brightness at 100% */ + cmd[2] = 'T' ; drv_GU311_send_string(cmd, sizeof(cmd) ); /* Ensure display ON */ + + drv_Noritake_clear(); + return 0; +} + + + +static int drv_Noritake_start (const char *section, const int quiet) +{ + char * model=0; + + + model = cfg_get(section,"Model","GU311"); + + if ( model && (strcasecmp("GU311",model) == 0) ) + return drv_GU311_start(section,quiet); + + error("%s : Unsupported display. Currently supported are : GU311.",Name); + return -1; +} + + +/****************************************/ +/*** plugins ***/ +/****************************************/ + +/* none */ + + +/****************************************/ +/*** widget callbacks ***/ +/****************************************/ + + +/* using drv_generic_text_draw(W) */ + + +/****************************************/ +/*** exported functions ***/ +/****************************************/ + + +/* list models */ +int drv_Noritake_list (void) +{ + printf ("GU311 GU311_Graphic"); + return 0; +} + + +/* initialize driver & display */ +int drv_Noritake_init (const char *section, const int quiet) +{ + WIDGET_CLASS wc; + int ret; + + /* display preferences */ + XRES = 6; /* pixel width of one char */ + YRES = 8; /* pixel height of one char */ + CHARS = 0; /* number of user-defineable characters */ + CHAR0 = 0; /* ASCII of first user-defineable char */ + + GOTO_COST = 6; /* number of bytes a goto command requires */ + + /* start display */ + if ((ret=drv_Noritake_start (section, quiet))!=0) + return ret; + + /* initialize generic text driver */ + if ((ret=drv_generic_text_init(section, Name))!=0) + return ret; + + /* register text widget */ + wc=Widget_Text; + wc.draw=drv_generic_text_draw; + widget_register(&wc); + + /* register plugins */ + /* none */ + + if (!quiet) { + char buffer[40]; + qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); + if (drv_generic_text_greet (buffer, NULL)) { + sleep (3); + drv_Noritake_clear(); + } + } + + return 0; +} + + +/* close driver & display */ +int drv_Noritake_quit (const int quiet) +{ + + info("%s: shutting down.", Name); + + /* clear display */ + drv_Noritake_clear(); + + /* say goodbye... */ + if (!quiet) { + drv_generic_text_greet ("goodbye!", NULL); + } + + drv_generic_parport_close(); + drv_generic_text_quit(); + return (0); +} + + +DRIVER drv_Noritake = { + name: Name, + list: drv_Noritake_list, + init: drv_Noritake_init, + quit: drv_Noritake_quit, +}; + -- cgit v1.2.3