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-rw-r--r--drv_Pertelian.c331
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diff --git a/drv_Pertelian.c b/drv_Pertelian.c
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+/* $Id: drv_Pertelian.c 975 2009-01-18 11:16:20Z michael $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_Pertelian.c $
+ *
+ * Pertelian lcd4linux driver
+ * Copyright (C) 2007 Andy Powell <lcd4linux@automted.it>
+ *
+ * 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.
+ *
+ */
+
+/*
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_Pertelian
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.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"
+
+#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(100);
+ }
+}
+
+
+static void drv_Pertelian_clear(void)
+{
+ char cmd[2];
+
+ cmd[0] = PERTELIAN_LCDCOMMAND;
+ cmd[1] = 0x01;
+ drv_Pertelian_send(cmd, 2);
+}
+
+
+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);
+}
+
+
+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;
+}
+
+
+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 ***/
+/****************************************/
+
+static void plugin_backlight(RESULT * result, RESULT * arg1)
+{
+ double backlight = 0;
+ backlight = drv_Pertelian_backlight(R2N(arg1));
+ SetResult(&result, R_NUMBER, &backlight);
+}
+
+/****************************************/
+/*** 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("Pertelian X2040 displays");
+ return 0;
+}
+
+
+/* initialize driver & display */
+int drv_Pertelian_init(const char *section, const int quiet)
+{
+ WIDGET_CLASS wc;
+ int ret;
+
+ info("%s: %s", Name, "$Rev: 975 $");
+
+ /* 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);
+ AddFunction("LCD::backlight", 1, plugin_backlight);
+ 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);
+ }
+
+ drv_Pertelian_backlight(0);
+ 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,
+};
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