diff options
author | Reinhard Tartler <siretart@tauware.de> | 2007-04-05 15:25:19 +0200 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2007-04-05 15:25:19 +0200 |
commit | d0c7529cb9833ede3595051df5599a11fe03be48 (patch) | |
tree | 4e63b581f10aa58e714cbf5f08f8c4ade0c09fff /drv_picoLCD.c | |
parent | 3811bca55e79006fb5c3dc8f25d8ef29ccdda758 (diff) | |
download | lcd4linux-d0c7529cb9833ede3595051df5599a11fe03be48.tar.gz |
import new upstream
Diffstat (limited to 'drv_picoLCD.c')
-rw-r--r-- | drv_picoLCD.c | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/drv_picoLCD.c b/drv_picoLCD.c new file mode 100644 index 0000000..36ba7c0 --- /dev/null +++ b/drv_picoLCD.c @@ -0,0 +1,471 @@ +/* $Id: drv_picoLCD.c 759 2007-02-04 05:55:58Z michael $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/branches/0.10.1/drv_picoLCD.c $ + * + * driver for picoLCD displays from mini-box.com + * + * Copyright (C) 2005 Michael Reinelt <reinelt@eunet.at> + * Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> + * + * Copyright (C) 2007 Nicu Pavel, Mini-Box.com <npavel@mini-box.com> + * + * 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_picoLCD + * + */ + +#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 <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" +#include "drv_generic_gpio.h" +#include "drv_generic_keypad.h" + + + +#define picoLCD_VENDOR 0x04d8 +#define picoLCD_DEVICE 0x0002 + +static char Name[] = "picoLCD"; + +static unsigned int gpo = 0; + +static char *Buffer; +static char *BufPtr; + +static usb_dev_handle *lcd; +extern int usb_debug; + + + +/****************************************/ +/*** hardware dependant functions ***/ +/****************************************/ + +static int drv_pL_open(void) +{ + struct usb_bus *busses, *bus; + struct usb_device *dev; + char driver[1024]; + char product[1024]; + char manufacturer[1024]; + char serialnumber[1024]; + int ret; + + lcd = NULL; + + info("%s: scanning for picoLCD...", Name); + + usb_debug = 0; + + usb_init(); + usb_find_busses(); + usb_find_devices(); + busses = usb_get_busses(); + + for (bus = busses; bus; bus = bus->next) { + for (dev = bus->devices; dev; dev = dev->next) { + if ((dev->descriptor.idVendor == picoLCD_VENDOR) && (dev->descriptor.idProduct == picoLCD_DEVICE)) { + + info("%s: found picoLCD on bus %s device %s", Name, bus->dirname, dev->filename); + + lcd = usb_open(dev); + + ret = usb_get_driver_np(lcd, 0, driver, sizeof(driver)); + + if (ret == 0) { + info("%s: interface 0 already claimed by '%s'", Name, driver); + info("%s: attempting to detach driver...", Name); + if (usb_detach_kernel_driver_np(lcd, 0) < 0) { + error("%s: usb_detach_kernel_driver_np() failed!", Name); + return -1; + } + } + + usb_set_configuration(lcd, 1); + usleep(100); + + if (usb_claim_interface(lcd, 0) < 0) { + error("%s: usb_claim_interface() failed!", Name); + return -1; + } + + usb_set_altinterface(lcd, 0); + + usb_get_string_simple(lcd, dev->descriptor.iProduct, product, sizeof(product)); + usb_get_string_simple(lcd, dev->descriptor.iManufacturer, manufacturer, sizeof(manufacturer)); + usb_get_string_simple(lcd, dev->descriptor.iSerialNumber, serialnumber, sizeof(serialnumber)); + + info("%s: Manufacturer='%s' Product='%s' SerialNumber='%s'", Name, manufacturer, product, serialnumber); + + return 0; + } + } + } + error("%s: could not find a picoLCD", Name); + return -1; +} + + +static int drv_pL_close(void) +{ + usb_release_interface(lcd, 0); + usb_close(lcd); + + return 0; +} + + +static void drv_pL_send(unsigned char *data, int size) +{ + usb_interrupt_write(lcd, USB_ENDPOINT_OUT + 1, (char *) data, size, 1000); +} + + +static void drv_pL_clear(void) +{ + unsigned char cmd[1] = { 0x94 }; /* clear display */ + drv_pL_send(cmd, 1); +} + +static int drv_pL_contrast(int contrast) +{ + unsigned char cmd[2] = { 0x92 }; /* set contrast */ + + if (contrast < 0) + contrast = 0; + if (contrast > 255) + contrast = 255; + + cmd[1] = contrast; + drv_pL_send(cmd, 2); + + return contrast; +} + + +static int drv_pL_backlight(int backlight) +{ + unsigned char cmd[2] = { 0x91 }; /* set backlight */ + + if (backlight < 0) + backlight = 0; + if (backlight > 1) + backlight = 1; + + cmd[1] = backlight; + drv_pL_send(cmd, 2); + + return backlight; +} + +static int drv_pL_gpo(int num, int val) +{ + unsigned char cmd[2] = { 0x81 }; /* set GPO */ + + if (num < 0) + num = 0; + if (num > 7) + num = 7; + + if (val < 0) + val = 0; + if (val > 1) + val = 1; + + /* set led bit to 1 or 0 */ + if (val) + gpo |= 1 << num; + else + gpo &= ~(1 << num); + + cmd[1] = gpo; + drv_pL_send(cmd, 2); + + return val; +} + + +static void drv_pL_write(const int row, const int col, const char *data, int len) +{ + unsigned char cmd[64]; + int i; + + cmd[0] = 0x98; /* goto/write */ + cmd[1] = row; + cmd[2] = col; + cmd[3] = len; + + i = 4; + while (len--) { + cmd[i++] = *data++; + } + + drv_pL_send(cmd, i); +} + +static void drv_pL_defchar(const int ascii, const unsigned char *matrix) +{ + unsigned char cmd[10] = { 0x9c }; /* define character */ + int i; + + cmd[1] = ascii; + for (i = 0; i < 8; i++) { + cmd[i + 2] = *matrix++ & 0x1f; + } + + drv_pL_send(cmd, 10); +} + + +static int drv_pL_start(const char *section, const int quiet) +{ + int rows = -1, cols = -1; + int value; + 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; + + if (drv_pL_open() < 0) { + return -1; + } + + /* Init the command buffer */ + Buffer = (char *) malloc(1024); + if (Buffer == NULL) { + error("%s: coommand buffer could not be allocated: malloc() failed", Name); + return -1; + } + BufPtr = Buffer; + + if (cfg_number(section, "Contrast", 0, 0, 255, &value) > 0) { + info("Setting contrast to %d", value); + drv_pL_contrast(value); + } + + if (cfg_number(section, "Backlight", 0, 0, 1, &value) > 0) { + info("Setting backlight to %d", value); + drv_pL_backlight(value); + } + + drv_pL_clear(); /* clear display */ + + if (!quiet) { + char buffer[40]; + qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); + if (drv_generic_text_greet(buffer, "http://www.picolcd.com")) { + sleep(3); + drv_pL_clear(); + } + } + + return 0; +} + + +/****************************************/ +/*** plugins ***/ +/****************************************/ + +static void plugin_contrast(RESULT * result, RESULT * arg1) +{ + double contrast; + + contrast = drv_pL_contrast(R2N(arg1)); + SetResult(&result, R_NUMBER, &contrast); +} + +static void plugin_backlight(RESULT * result, RESULT * arg1) +{ + double backlight; + + backlight = drv_pL_backlight(R2N(arg1)); + SetResult(&result, R_NUMBER, &backlight); +} + +static void plugin_gpo(RESULT * result, RESULT * argv[]) +{ + double gpo; + gpo = drv_pL_gpo(R2N(argv[0]), R2N(argv[1])); + SetResult(&result, R_NUMBER, &gpo); +} + + +/****************************************/ +/*** 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_pL_list(void) +{ + printf("generic"); + return 0; +} + + +/* initialize driver & display */ +int drv_pL_init(const char *section, const int quiet) +{ + WIDGET_CLASS wc; + int ret; + + info("%s: %s", Name, "$Rev: 759 $"); + + /* 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 */ + GPOS = 8; + INVALIDATE = 1; + GOTO_COST = 2; /* number of bytes a goto command requires */ + + /* real worker functions */ + drv_generic_text_real_write = drv_pL_write; + drv_generic_text_real_defchar = drv_pL_defchar; + drv_generic_gpio_real_set = drv_pL_gpo; + + /* start display */ + if ((ret = drv_pL_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; + + drv_generic_text_bar_add_segment(0, 0, 255, 32); + + /* GPO's init */ + if ((ret = drv_generic_gpio_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::backlight", -1, plugin_backlight); + AddFunction("LCD::gpo", -1, plugin_gpo); + + return 0; +} + + +/* close driver & display */ +int drv_pL_quit(const int quiet) +{ + + info("%s: shutting down.", Name); + + drv_generic_text_quit(); + + /* clear display */ + drv_pL_clear(); + + /* say goodbye... */ + if (!quiet) { + drv_generic_text_greet("goodbye!", NULL); + } + + drv_pL_close(); + + if (Buffer) { + free(Buffer); + Buffer = NULL; + BufPtr = Buffer; + } + + return (0); +} + + +DRIVER drv_picoLCD = { + name:Name, + list:drv_pL_list, + init:drv_pL_init, + quit:drv_pL_quit, +}; |