From 354b411f9ddf943fe35b380f11d52bd6201df131 Mon Sep 17 00:00:00 2001 From: michael Date: Mon, 1 Oct 2007 15:04:49 +0000 Subject: driver for Pertelian display by Andy Powell git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@843 3ae390bd-cb1e-0410-b409-cd5a39f66f1f --- drv_Pertelian.c | 328 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 328 insertions(+) create mode 100644 drv_Pertelian.c (limited to 'drv_Pertelian.c') diff --git a/drv_Pertelian.c b/drv_Pertelian.c new file mode 100644 index 0000000..30df5bd --- /dev/null +++ b/drv_Pertelian.c @@ -0,0 +1,328 @@ +/* $Id$ + * $URL$ + * + * Pertelian lcd4linux driver + * Copyright (C) 2007 Andy Powell + * + * Copyright (C) 2005 Michael Reinelt + * Copyright (C) 2005, 2006, 2007 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. + * + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_Pertelian + * + */ + +#include "config.h" + +#include +#include +#include +#include +#include + +#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" + +#include "drv_generic_text.h" +#include "drv_generic_serial.h" + +static char Name[] = "Pertelian"; + +static unsigned char rowoffset[4] = { 0x80, 0x80 + 0x40, 0x80 + 0x14, 0x80 + 0x40 + 0x14 }; + +#define PERTELIAN_LCDCOMMAND 0xfe + +/****************************************/ +/*** hardware dependant functions ***/ +/****************************************/ + + +static int drv_Pertelian_open(const char *section) +{ + if (drv_generic_serial_open(section, Name, 0) < 0) + return -1; + return 0; +} + + +static int drv_Pertelian_close(void) +{ + drv_generic_serial_close(); + return 0; +} + +static void drv_Pertelian_send(const char *data, const unsigned int len) +{ + unsigned int i; + + /* Pertelian interface seems to offer no buffering at all + so we have to slow things down a tad yes 1usec is enough */ + + for (i = 0; i < len; i++) { + drv_generic_serial_write(&data[i], 1); + usleep(1); + } +} + + +/* text mode displays only */ +static void drv_Pertelian_clear(void) +{ + char cmd[2]; + + cmd[0] = PERTELIAN_LCDCOMMAND; + cmd[1] = 0x01; + drv_Pertelian_send(cmd, 2); +} + + +/* text mode displays only */ +static void drv_Pertelian_write(const int row, const int col, const char *data, int len) +{ + char cmd[3]; + + cmd[0] = PERTELIAN_LCDCOMMAND; + cmd[1] = ((rowoffset[row]) + (col)); + drv_Pertelian_send(cmd, 2); + drv_Pertelian_send(data, len); +} + +/* text mode displays only */ +static void drv_Pertelian_defchar(const int ascii, const unsigned char *matrix) +{ + char cmd[11] = ""; + int i; + + cmd[0] = PERTELIAN_LCDCOMMAND; + cmd[1] = (0x40 + (8 * ascii)); + for (i = 0; i < 8; i++) { + cmd[i + 2] = matrix[i] & 0x1f; + } + drv_Pertelian_send(cmd, 10); +} + +static int drv_Pertelian_backlight(int backlight) +{ + char cmd[2]; + + if (backlight <= 0) + backlight = 2; + else if (backlight >= 1) + backlight = 3; + + cmd[0] = PERTELIAN_LCDCOMMAND; + cmd[1] = backlight; + + drv_Pertelian_send(cmd, 2); + + return backlight; +} + + +/* start text mode display */ +static int drv_Pertelian_start(const char *section) +{ + int backlight; + int rows = -1, cols = -1; + char *s; + char cmd[12] = ""; + + s = cfg_get(section, "Size", NULL); + if (s == NULL || *s == '\0') { + error("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); + return -1; + } + if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) { + error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source()); + free(s); + return -1; + } + + DROWS = rows; + DCOLS = cols; + + /* open communication with the display */ + if (drv_Pertelian_open(section) < 0) { + return -1; + } + + /* reset & initialize display */ + cmd[0] = PERTELIAN_LCDCOMMAND; + cmd[1] = 0x38; + cmd[2] = PERTELIAN_LCDCOMMAND; + cmd[3] = 0x06; + cmd[4] = PERTELIAN_LCDCOMMAND; + cmd[5] = 0x10; /* move cursor on data write */ + cmd[6] = PERTELIAN_LCDCOMMAND; + cmd[7] = 0x0c; + cmd[8] = 0x0c; + + drv_Pertelian_send(cmd, 8); + + if (cfg_number(section, "Backlight", 0, 0, 1, &backlight) > 0) { + drv_Pertelian_backlight(backlight); + } + + drv_Pertelian_clear(); /* clear display */ + + return 0; +} + + +/****************************************/ +/*** plugins ***/ +/****************************************/ + + +/****************************************/ +/*** 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_Pertelian_list(void) +{ + printf("generic"); + return 0; +} + + +/* initialize driver & display */ +/* use this function for a text display */ +int drv_Pertelian_init(const char *section, const int quiet) +{ + WIDGET_CLASS wc; + int ret; + + info("%s: %s", Name, "$Rev$"); + + /* display preferences */ + XRES = 5; /* pixel width of one char */ + YRES = 8; /* pixel height of one char */ + CHARS = 8; /* number of user-defineable characters */ + CHAR0 = 0; /* ASCII of first user-defineable char */ + GOTO_COST = 2; /* number of bytes a goto command requires */ + + /* real worker functions */ + drv_generic_text_real_write = drv_Pertelian_write; + drv_generic_text_real_defchar = drv_Pertelian_defchar; + + + /* start display */ + if ((ret = drv_Pertelian_start(section)) != 0) + return ret; + + if (!quiet) { + char buffer[40]; + qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); + if (drv_generic_text_greet(buffer, "LinITX.com")) { + sleep(3); + drv_Pertelian_clear(); + } + } + + /* initialize generic text driver */ + if ((ret = drv_generic_text_init(section, Name)) != 0) + return ret; + + /* initialize generic icon driver */ + if ((ret = drv_generic_text_icon_init()) != 0) + return ret; + + /* initialize generic bar driver */ + if ((ret = drv_generic_text_bar_init(0)) != 0) + return ret; + + /* add fixed chars to the bar driver */ + drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */ + + + /* register text widget */ + wc = Widget_Text; + wc.draw = drv_generic_text_draw; + widget_register(&wc); + + /* register icon widget */ + wc = Widget_Icon; + wc.draw = drv_generic_text_icon_draw; + widget_register(&wc); + + /* register bar widget */ + wc = Widget_Bar; + wc.draw = drv_generic_text_bar_draw; + widget_register(&wc); + + + return 0; +} + + + +/* close driver & display */ +int drv_Pertelian_quit(const int quiet) +{ + + info("%s: shutting down.", Name); + + drv_generic_text_quit(); + + /* clear display */ + drv_Pertelian_clear(); + + /* say goodbye... */ + if (!quiet) { + drv_generic_text_greet("goodbye!", NULL); + } + + debug("closing connection"); + drv_Pertelian_close(); + + return (0); +} + +DRIVER drv_Pertelian = { + .name = Name, + .list = drv_Pertelian_list, + .init = drv_Pertelian_init, + .quit = drv_Pertelian_quit, +}; -- cgit v1.2.3