diff options
Diffstat (limited to 'drv_IRLCD.c')
| -rw-r--r-- | drv_IRLCD.c | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/drv_IRLCD.c b/drv_IRLCD.c new file mode 100644 index 0000000..8a8f300 --- /dev/null +++ b/drv_IRLCD.c @@ -0,0 +1,406 @@ +/* $Id: drv_IRLCD.c 984 2009-02-28 06:07:10Z michael $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/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 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_set_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) { + info("%s: WRNING! usb_claim_interface() failed!", Name); + /* try to proceed anyway... */ + } + 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) +{ + unsigned 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) +{ + unsigned 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) +{ + unsigned 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("USBtiny LCD controller"); + 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: 984 $"); + + /* 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, +}; |