--- /dev/null
+/* $Id: drv_IRLCD.c 773 2008-07-14 12:00:00Z jpcivade $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/branches/0.10.1/drv_IRLCD.c $
+ *
+ **************************************************************************
+ * Driver for IRLCD : simple USB1.1 LCD + IR Receiver based on ATtiny2313 *
+ **************************************************************************
+ * Hardware from http://www.xs4all.nl/~dicks/avr/usbtiny/index.html : *
+ * [USBtiny LIRC compatible IR receiver and LCD controller] *
+ * Ths driver is based on LCD2USB software by Till Harbaum, adapted to *
+ * USBTiny protocol by Jean-Philippe Civade *
+ **************************************************************************
+ *
+ * The IR receiving par is compatible with IgrPlug protocol
+ * and can be used from LIRC.
+ *
+ * Copyright (C) 2008 Jean-Philippe Civade <jp@civade.com> (for porting to IRLCD)
+ * Copyright (C) 2005 Till Harbaum <till@harbaum.org> (for LCD2USB friver)
+ * Copyright (C) 2005, 2006, 2007, 2008 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_IRLCD
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+
+#include <usb.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"
+
+/* vid/pid of IRLCD */
+#define LCD_USB_VENDOR 0x03EB /* for Atmel device */
+#define LCD_USB_DEVICE 0x0002
+
+/* Protocole IR/LCD */
+#define LCD_INSTR 20
+#define LCD_DATA 21
+
+static char Name[] = "IRLCD";
+static char *device_id = NULL, *bus_id = NULL;
+
+static usb_dev_handle *lcd;
+
+extern int usb_debug;
+extern int got_signal;
+
+/****************************************/
+/*** hardware dependant functions ***/
+/****************************************/
+
+static int drv_IRLCD_open(char *bus_id, char *device_id)
+{
+ struct usb_bus *busses, *bus;
+ struct usb_device *dev;
+
+ lcd = NULL;
+
+ info("%s: scanning USB for IRLCD interface ...", Name);
+
+ if (bus_id != NULL)
+ info("%s: scanning for bus id: %s", Name, bus_id);
+
+ if (device_id != NULL)
+ info("%s: scanning for device id: %s", Name, device_id);
+
+ usb_debug = 0;
+
+ usb_init();
+ usb_find_busses();
+ usb_find_devices();
+ busses = usb_get_busses();
+
+ for (bus = busses; bus; bus = bus->next) {
+ /* search this bus if no bus id was given or if this is the given bus id */
+ if (!bus_id || (bus_id && !strcasecmp(bus->dirname, bus_id))) {
+
+ for (dev = bus->devices; dev; dev = dev->next) {
+ /* search this device if no device id was given or if this is the given device id */
+ if (!device_id || (device_id && !strcasecmp(dev->filename, device_id))) {
+
+ if ((dev->descriptor.idVendor == LCD_USB_VENDOR) && (dev->descriptor.idProduct == LCD_USB_DEVICE)) {
+ info("%s: found IRLCD interface on bus %s device %s", Name, bus->dirname, dev->filename);
+ lcd = usb_open(dev);
+ if (usb_claim_interface(lcd, 0) < 0) {
+ error("%s: usb_claim_interface() failed!", Name);
+ return -1;
+ }
+ return 0;
+ }
+ }
+ }
+ }
+ }
+ return -1;
+}
+
+
+static int drv_IRLCD_close(void)
+{
+ usb_release_interface(lcd, 0);
+ usb_close(lcd);
+
+ return 0;
+}
+
+
+/* Send a buffer to lcd via a control message */
+static int drv_IRLCD_send(int request, unsigned char *buffer, int size)
+{
+ if (usb_control_msg(lcd, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, /* bRequestType */
+ request, /* bRequest (LCD_INSTR / LCD_DATA) */
+ 0, /* wValue (0) */
+ 0, /* wIndex (0) */
+ (char *) buffer, /* pointer to destination buffer */
+ size, /* wLength */
+ 1000) < 0) { /* Timeout in millisectonds */
+ error("%s: USB request failed! Trying to reconnect device.", Name);
+
+ usb_release_interface(lcd, 0);
+ usb_close(lcd);
+
+ /* try to close and reopen connection */
+ if (drv_IRLCD_open(bus_id, device_id) < 0) {
+ error("%s: could not re-detect IRLCD USB LCD", Name);
+ got_signal = -1;
+ return -1;
+ }
+ /* and try to re-send command */
+ if (usb_control_msg(lcd, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, /* bRequestType */
+ request, /* bRequest (LCD_INSTR / LCD_DATA) */
+ 0, /* wValue (0) */
+ 0, /* wIndex (0) */
+ (char *) buffer, /* pointer to destination buffer */
+ size, /* wLength */
+ 1000) < 0) { /* Timeout in millisectonds */
+ error("%s: retried USB request failed, aborting!", Name);
+ got_signal = -1;
+ return -1;
+ }
+
+ info("%s: Device successfully reconnected.", Name);
+ }
+
+ return 0;
+}
+
+
+/* text mode displays only */
+static void drv_IRLCD_clear(void)
+{
+ char cmd[1];
+
+ cmd[0] = 0x01; /* clear */
+ drv_IRLCD_send(LCD_INSTR, cmd, 1);
+ cmd[0] = 0x03; /* home */
+ drv_IRLCD_send(LCD_INSTR, cmd, 1);
+}
+
+
+/* text mode displays only */
+static void drv_IRLCD_write(const int row, const int col, const char *data, int len)
+{
+ char cmd[1];
+ static int pos;
+
+ /* for 2 lines display */
+ pos = (row % 2) * 64 + (row / 2) * 20 + col;
+
+ /* do the cursor positioning here */
+ cmd[0] = 0x80 | pos;
+
+ /* do positionning */
+ drv_IRLCD_send(LCD_INSTR, cmd, 1);
+
+ /* send string to the display */
+ drv_IRLCD_send(LCD_DATA, (unsigned char *) data, len);
+
+}
+
+/* text mode displays only */
+static void drv_IRLCD_defchar(const int ascii, const unsigned char *matrix)
+{
+ char cmd[10];
+ int i;
+
+ /* Write to CGRAM */
+ cmd[0] = 0x40 | 8 * ascii;
+ drv_IRLCD_send(LCD_INSTR, cmd, 1);
+
+
+ /* send bitmap to the display */
+ for (i = 0; i < 8; i++) {
+ cmd[i] = matrix[i] & 0x1f;
+ }
+ drv_IRLCD_send(LCD_DATA, cmd, 8);
+}
+
+
+/* start text mode display */
+static int drv_IRLCD_start(const char *section)
+{
+ int rows = -1, cols = -1;
+ char *s;
+
+ 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;
+
+ /* bus id and device id are strings and not just intergers, since */
+ /* the windows port of libusb treats them as strings. And this way */
+ /* we keep windows compatibility ... just in case ... */
+ bus_id = cfg_get(section, "Bus", NULL);
+ device_id = cfg_get(section, "Device", NULL);
+
+ if (drv_IRLCD_open(bus_id, device_id) < 0) {
+ error("%s: could not find a IRLC USB LCD", Name);
+ return -1;
+ }
+
+ /* reset & initialize display */
+ drv_IRLCD_clear(); /* clear display */
+
+ return 0;
+}
+
+
+/****************************************/
+/*** plugins ***/
+/****************************************/
+/* no plugins capabilities */
+
+/****************************************/
+/*** 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_IRLCD_list(void)
+{
+ printf("generic");
+ return 0;
+}
+
+/* initialize driver & display */
+int drv_IRLCD_init(const char *section, const int quiet)
+{
+ WIDGET_CLASS wc;
+ int asc255bug;
+ int ret;
+
+ info("%s: %s", Name, "$Rev: 773 $");
+
+ /* 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_IRLCD_write;
+ drv_generic_text_real_defchar = drv_IRLCD_defchar;
+
+ /* start display */
+ if ((ret = drv_IRLCD_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, " www.civade.com")) {
+ sleep(3);
+ drv_IRLCD_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 */
+ /* most displays have a full block on ascii 255, but some have kind of */
+ /* an 'inverted P'. If you specify 'asc255bug 1 in the config, this */
+ /* char will not be used, but rendered by the bar driver */
+ cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug);
+ drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */
+ if (!asc255bug)
+ drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */
+
+ /* 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 */
+/* use this function for a text display */
+int drv_IRLCD_quit(const int quiet)
+{
+
+ info("%s: shutting down.", Name);
+
+ drv_generic_text_quit();
+
+ /* clear display */
+ drv_IRLCD_clear();
+
+ /* say goodbye... */
+ if (!quiet) {
+ drv_generic_text_greet("goodbye!", NULL);
+ }
+
+ debug("closing usb connection");
+ drv_IRLCD_close();
+
+ return (0);
+}
+
+/* use this one for a text display */
+DRIVER drv_IRLCD = {
+ .name = Name,
+ .list = drv_IRLCD_list,
+ .init = drv_IRLCD_init,
+ .quit = drv_IRLCD_quit,
+};
projects / lcd4linux.git / commitdiff