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-rw-r--r--oncology/dpfhack_display/lcd4linux/.svn/text-base/drv_LCD2USB.c.svn-base679
1 files changed, 0 insertions, 679 deletions
diff --git a/oncology/dpfhack_display/lcd4linux/.svn/text-base/drv_LCD2USB.c.svn-base b/oncology/dpfhack_display/lcd4linux/.svn/text-base/drv_LCD2USB.c.svn-base
deleted file mode 100644
index b14489f0..00000000
--- a/oncology/dpfhack_display/lcd4linux/.svn/text-base/drv_LCD2USB.c.svn-base
+++ /dev/null
@@ -1,679 +0,0 @@
-/* $Id$
- * $URL$
- *
- * driver for LCD2USB display interface
- * see http://www.harbaum.org/till/lcd2usb for schematics
- *
- * Copyright 2005 Till Harbaum <till@harbaum.org>
- * Copyright 2005 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_LCD2USB
- *
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.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 "timer.h"
-#include "qprintf.h"
-#include "plugin.h"
-#include "widget.h"
-#include "widget_text.h"
-#include "widget_icon.h"
-#include "widget_bar.h"
-#include "widget_keypad.h"
-#include "drv.h"
-#include "drv_generic_text.h"
-#include "drv_generic_keypad.h"
-
-/* vid/pid donated by FTDI */
-#define LCD_USB_VENDOR 0x0403
-#define LCD_USB_DEVICE 0xC630
-
-/* number of buttons on display */
-#define L2U_BUTTONS (2)
-
-#define LCD_ECHO (0<<5)
-#define LCD_CMD (1<<5)
-#define LCD_DATA (2<<5)
-#define LCD_SET (3<<5)
-#define LCD_GET (4<<5)
-
-/* target is a bit map for CMD/DATA */
-#define LCD_CTRL_0 (1<<3)
-#define LCD_CTRL_1 (1<<4)
-#define LCD_BOTH (LCD_CTRL_0 | LCD_CTRL_1)
-
-/* target is value to set */
-#define LCD_SET_CONTRAST (LCD_SET | (0<<3))
-#define LCD_SET_BRIGHTNESS (LCD_SET | (1<<3))
-#define LCD_SET_RESERVED0 (LCD_SET | (2<<3))
-#define LCD_SET_RESERVED1 (LCD_SET | (3<<3))
-
-/* target is value to get */
-#define LCD_GET_FWVER (LCD_GET | (0<<3))
-#define LCD_GET_BUTTONS (LCD_GET | (1<<3))
-#define LCD_GET_CTRL (LCD_GET | (2<<3))
-#define LCD_GET_RESERVED1 (LCD_GET | (3<<3))
-
-static char Name[] = "LCD2USB";
-static char *device_id = NULL, *bus_id = NULL;
-
-static usb_dev_handle *lcd;
-static int controllers = 0;
-
-extern int got_signal;
-
-/****************************************/
-/*** hardware dependant functions ***/
-/****************************************/
-
-static int drv_L2U_open(char *bus_id, char *device_id)
-{
- struct usb_bus *busses, *bus;
- struct usb_device *dev;
-
- lcd = NULL;
-
- info("%s: scanning USB for LCD2USB 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 LCD2USB 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_L2U_close(void)
-{
- usb_release_interface(lcd, 0);
- usb_close(lcd);
-
- return 0;
-}
-
-
-static int drv_L2U_send(int request, int value, int index)
-{
- if (usb_control_msg(lcd, USB_TYPE_VENDOR, request, value, index, NULL, 0, 1000) < 0) {
- 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_L2U_open(bus_id, device_id) < 0) {
- error("%s: could not re-detect LCD2USB USB LCD", Name);
- got_signal = -1;
- return -1;
- }
- /* and try to re-send command */
- if (usb_control_msg(lcd, USB_TYPE_VENDOR, request, value, index, NULL, 0, 1000) < 0) {
- error("%s: retried USB request failed, aborting!", Name);
- got_signal = -1;
- return -1;
- }
-
- info("%s: Device successfully reconnected.", Name);
- }
-
- return 0;
-}
-
-/* send a number of 16 bit words to the lcd2usb interface */
-/* and verify that they are correctly returned by the echo */
-/* command. This may be used to check the reliability of */
-/* the usb interfacing */
-#define ECHO_NUM 100
-
-int drv_L2U_echo(void)
-{
- int i, nBytes, errors = 0;
- unsigned short val, ret;
-
- for (i = 0; i < ECHO_NUM; i++) {
- val = rand() & 0xffff;
-
- nBytes = usb_control_msg(lcd,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN,
- LCD_ECHO, val, 0, (char *) &ret, sizeof(ret), 1000);
-
- if (nBytes < 0) {
- error("%s: USB request failed!", Name);
- return -1;
- }
-
- if (val != ret)
- errors++;
- }
-
- if (errors) {
- error("%s: ERROR, %d out of %d echo transfers failed!", Name, errors, ECHO_NUM);
- return -1;
- } else
- info("%s: echo test successful", Name);
-
- return 0;
-}
-
-/* get a value from the lcd2usb interface */
-static int drv_L2U_get(unsigned char cmd)
-{
- unsigned char buffer[2];
- int nBytes;
-
- /* send control request and accept return value */
- nBytes = usb_control_msg(lcd,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN,
- cmd, 0, 0, (char *) buffer, sizeof(buffer), 1000);
-
- if (nBytes < 0) {
- error("%s: USB request failed!", Name);
- return -1;
- }
-
- return buffer[0] + 256 * buffer[1];
-}
-
-/* get lcd2usb interface firmware version */
-static void drv_L2U_get_version(void)
-{
- int ver = drv_L2U_get(LCD_GET_FWVER);
-
- if (ver != -1)
- info("%s: firmware version %d.%02d", Name, ver & 0xff, ver >> 8);
- else
- error("%s: unable to read firmware version", Name);
-}
-
-/* get the bit mask of installed LCD controllers (0 = no */
-/* lcd found, 1 = single controller display, 3 = dual */
-/* controller display */
-static void drv_L2U_get_controllers(void)
-{
- controllers = drv_L2U_get(LCD_GET_CTRL);
-
- if (controllers != -1) {
- if (controllers)
- info("%s: installed controllers: %s%s", Name,
- (controllers & 1) ? "CTRL0" : "", (controllers & 2) ? " CTRL1" : "");
- else
- error("%s: no controllers found", Name);
- } else {
- error("%s: unable to read installed controllers", Name);
- controllers = 0; /* don't access any controllers */
- }
-
- /* convert into controller map matching our protocol */
- controllers = ((controllers & 1) ? LCD_CTRL_0 : 0) | ((controllers & 2) ? LCD_CTRL_1 : 0);
-}
-
-/* get state of the two optional buttons */
-static unsigned long drv_L2U_get_buttons(void)
-{
- int buttons = drv_L2U_get(LCD_GET_BUTTONS);
-
- if (buttons == -1) {
- error("%s: unable to read button state", Name);
- buttons = 0;
- }
-
- return buttons;
-}
-
-
-/* to increase performance, a little buffer is being used to */
-/* collect command bytes of the same type before transmitting them */
-#define BUFFER_MAX_CMD 4 /* current protocol supports up to 4 bytes */
-int buffer_current_type = -1; /* nothing in buffer yet */
-int buffer_current_fill = 0; /* -"- */
-unsigned char buffer[BUFFER_MAX_CMD];
-
-/* command format:
- * 7 6 5 4 3 2 1 0
- * C C C T T R L L
- *
- * TT = target bit map
- * R = reserved for future use, set to 0
- * LL = number of bytes in transfer - 1
- */
-
-/* flush command queue due to buffer overflow / content */
-/* change or due to explicit request */
-static void drv_L2U_flush(void)
-{
- int request, value, index;
-
- /* anything to flush? ignore request if not */
- if (buffer_current_type == -1)
- return;
-
- /* build request byte */
- request = buffer_current_type | (buffer_current_fill - 1);
-
- /* fill value and index with buffer contents. endianess should IMHO not */
- /* be a problem, since usb_control_msg() will handle this. */
- value = buffer[0] | (buffer[1] << 8);
- index = buffer[2] | (buffer[3] << 8);
-
- if (controllers) {
- /* send current buffer contents */
- drv_L2U_send(request, value, index);
- }
-
- /* buffer is now free again */
- buffer_current_type = -1;
- buffer_current_fill = 0;
-}
-
-/* enqueue a command into the buffer */
-static void drv_L2U_enqueue(int command_type, int value)
-{
- if ((buffer_current_type >= 0) && (buffer_current_type != command_type))
- drv_L2U_flush();
-
- /* add new item to buffer */
- buffer_current_type = command_type;
- buffer[buffer_current_fill++] = value;
-
- /* flush buffer if it's full */
- if (buffer_current_fill == BUFFER_MAX_CMD)
- drv_L2U_flush();
-}
-
-static void drv_L2U_command(const unsigned char ctrl, const unsigned char cmd)
-{
- drv_L2U_enqueue(LCD_CMD | (ctrl & controllers), cmd);
-}
-
-
-static void drv_L2U_clear(void)
-{
- drv_L2U_command(LCD_BOTH, 0x01); /* clear display */
- drv_L2U_command(LCD_BOTH, 0x03); /* return home */
-}
-
-static void drv_L2U_write(int row, const int col, const char *data, int len)
-{
- int pos, ctrl = LCD_CTRL_0;
-
- /* displays with more two rows and 20 columns have a logical width */
- /* of 40 chars and use more than one controller */
- if ((DROWS > 2) && (DCOLS > 20) && (row > 1)) {
- /* use second controller */
- row -= 2;
- ctrl = LCD_CTRL_1;
- }
-
- /* 16x4 Displays use a slightly different layout */
- if (DCOLS == 16 && DROWS == 4) {
- pos = (row % 2) * 64 + (row / 2) * 16 + col;
- } else {
- pos = (row % 2) * 64 + (row / 2) * 20 + col;
- }
-
- drv_L2U_command(ctrl, 0x80 | pos);
-
- while (len--) {
- drv_L2U_enqueue(LCD_DATA | (ctrl & controllers), *data++);
- }
-
- drv_L2U_flush();
-}
-
-static void drv_L2U_defchar(const int ascii, const unsigned char *matrix)
-{
- int i;
-
- drv_L2U_command(LCD_BOTH, 0x40 | 8 * ascii);
-
- for (i = 0; i < 8; i++) {
- drv_L2U_enqueue(LCD_DATA | (LCD_BOTH & controllers), *matrix++ & 0x1f);
- }
-
- drv_L2U_flush();
-}
-
-static int drv_L2U_contrast(int contrast)
-{
- if (contrast < 0)
- contrast = 0;
- if (contrast > 255)
- contrast = 255;
-
- drv_L2U_send(LCD_SET_CONTRAST, contrast, 0);
-
- return contrast;
-}
-
-static int drv_L2U_brightness(int brightness)
-{
- if (brightness < 0)
- brightness = 0;
- if (brightness > 255)
- brightness = 255;
-
- drv_L2U_send(LCD_SET_BRIGHTNESS, brightness, 0);
-
- return brightness;
-}
-
-static void drv_L2U_timer(void __attribute__ ((unused)) * notused)
-{
- static unsigned long last_but = 0;
- unsigned long new_but = drv_L2U_get_buttons();
- int i;
-
- /* check if button state changed */
- if (new_but ^ last_but) {
-
- /* send single keypad events for all changed buttons */
- for (i = 0; i < L2U_BUTTONS; i++)
- if ((new_but & (1 << i)) ^ (last_but & (1 << i)))
- drv_generic_keypad_press(((new_but & (1 << i)) ? 0x80 : 0) | i);
- }
-
- last_but = new_but;
-}
-
-static int drv_L2U_keypad(const int num)
-{
- int val = 0;
-
- /* check for key press event */
- if (num & 0x80)
- val = WIDGET_KEY_PRESSED;
- else
- val = WIDGET_KEY_RELEASED;
-
- if ((num & 0x7f) == 0)
- val += WIDGET_KEY_UP;
-
- if ((num & 0x7f) == 1)
- val += WIDGET_KEY_DOWN;
-
- return val;
-}
-
-static int drv_L2U_start(const char *section, const int quiet)
-{
- int contrast, brightness;
- 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_L2U_open(bus_id, device_id) < 0) {
- error("%s: could not find a LCD2USB USB LCD", Name);
- return -1;
- }
-
- /* test interface reliability */
- drv_L2U_echo();
-
- /* get some infos from the interface */
- drv_L2U_get_version();
- drv_L2U_get_controllers();
- if (!controllers)
- return -1;
-
- /* regularly request key state */
- /* Fixme: make 100msec configurable */
- timer_add(drv_L2U_timer, NULL, 100, 0);
-
- if (cfg_number(section, "Contrast", 0, 0, 255, &contrast) > 0) {
- drv_L2U_contrast(contrast);
- }
-
- if (cfg_number(section, "Brightness", 0, 0, 255, &brightness) > 0) {
- drv_L2U_brightness(brightness);
- }
-
- drv_L2U_clear(); /* clear display */
-
- if (!quiet) {
- char buffer[40];
- qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
- if (drv_generic_text_greet(buffer, "www.harbaum.org/till")) {
- sleep(3);
- drv_L2U_clear();
- }
- }
-
- return 0;
-}
-
-
-/****************************************/
-/*** plugins ***/
-/****************************************/
-
-static void plugin_contrast(RESULT * result, RESULT * arg1)
-{
- double contrast;
-
- contrast = drv_L2U_contrast(R2N(arg1));
- SetResult(&result, R_NUMBER, &contrast);
-}
-
-
-static void plugin_brightness(RESULT * result, RESULT * arg1)
-{
- double brightness;
-
- brightness = drv_L2U_brightness(R2N(arg1));
- SetResult(&result, R_NUMBER, &brightness);
-}
-
-
-/****************************************/
-/*** widget callbacks ***/
-/****************************************/
-
-
-/* using drv_generic_text_draw(W) */
-/* using drv_generic_text_icon_draw(W) */
-/* using drv_generic_text_bar_draw(W) */
-
-
-/****************************************/
-/*** exported functions ***/
-/****************************************/
-
-
-/* list models */
-int drv_L2U_list(void)
-{
- printf("LCD2USB homebrew USB interface for HD44780 text displays");
- return 0;
-}
-
-
-/* initialize driver & display */
-int drv_L2U_init(const char *section, const int quiet)
-{
- WIDGET_CLASS wc;
- int asc255bug;
- 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_L2U_write;
- drv_generic_text_real_defchar = drv_L2U_defchar;
- drv_generic_keypad_real_press = drv_L2U_keypad;
-
- /* start display */
- if ((ret = drv_L2U_start(section, quiet)) != 0)
- return ret;
-
- /* 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 */
-
- /* initialize generic key pad driver */
- if ((ret = drv_generic_keypad_init(section, Name)) != 0)
- return ret;
-
- /* 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);
-
- /* register plugins */
- AddFunction("LCD::contrast", 1, plugin_contrast);
- AddFunction("LCD::brightness", 1, plugin_brightness);
-
- return 0;
-}
-
-
-/* close driver & display */
-int drv_L2U_quit(const int quiet)
-{
-
- info("%s: shutting down.", Name);
-
- drv_generic_text_quit();
- drv_generic_keypad_quit();
-
- /* clear display */
- drv_L2U_clear();
-
- /* say goodbye... */
- if (!quiet) {
- drv_generic_text_greet("That's all, folks!", NULL);
- }
-
- debug("closing USB connection");
- drv_L2U_close();
-
- return (0);
-}
-
-
-DRIVER drv_LCD2USB = {
- .name = Name,
- .list = drv_L2U_list,
- .init = drv_L2U_init,
- .quit = drv_L2U_quit,
-};
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