mirror of
https://github.com/netfun2000/lcd4linux.git
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3654ca81e0
This fixes build on openSUSE Factory. git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@899 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
492 lines
11 KiB
C
492 lines
11 KiB
C
/* $Id$
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* $URL$
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*
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* driver for picoLCD displays from mini-box.com
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*
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* Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
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* Copyright (C) 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
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*
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* Copyright (C) 2007 Nicu Pavel, Mini-Box.com <npavel@mini-box.com>
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*
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* This file is part of LCD4Linux.
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*
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* LCD4Linux is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LCD4Linux is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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*
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* exported fuctions:
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*
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* struct DRIVER drv_picoLCD
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <termios.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <usb.h>
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#include "debug.h"
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#include "cfg.h"
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#include "qprintf.h"
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#include "udelay.h"
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#include "plugin.h"
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#include "widget.h"
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#include "widget_text.h"
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#include "widget_icon.h"
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#include "widget_bar.h"
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#include "drv.h"
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#include "drv_generic_text.h"
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#include "drv_generic_gpio.h"
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#include "drv_generic_keypad.h"
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#define picoLCD_VENDOR 0x04d8
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#define picoLCD_DEVICE 0x0002
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static char Name[] = "picoLCD";
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static unsigned int gpo = 0;
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static char *Buffer;
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static char *BufPtr;
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static usb_dev_handle *lcd;
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/****************************************/
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/*** hardware dependant functions ***/
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/****************************************/
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static int drv_pL_open(void)
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{
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struct usb_bus *busses, *bus;
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struct usb_device *dev;
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char driver[1024];
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char product[1024];
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char manufacturer[1024];
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char serialnumber[1024];
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int ret;
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lcd = NULL;
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info("%s: scanning for picoLCD...", Name);
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usb_set_debug(0);
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usb_init();
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usb_find_busses();
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usb_find_devices();
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busses = usb_get_busses();
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for (bus = busses; bus; bus = bus->next) {
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for (dev = bus->devices; dev; dev = dev->next) {
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if ((dev->descriptor.idVendor == picoLCD_VENDOR) && (dev->descriptor.idProduct == picoLCD_DEVICE)) {
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info("%s: found picoLCD on bus %s device %s", Name, bus->dirname, dev->filename);
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lcd = usb_open(dev);
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ret = usb_get_driver_np(lcd, 0, driver, sizeof(driver));
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if (ret == 0) {
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info("%s: interface 0 already claimed by '%s'", Name, driver);
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info("%s: attempting to detach driver...", Name);
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if (usb_detach_kernel_driver_np(lcd, 0) < 0) {
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error("%s: usb_detach_kernel_driver_np() failed!", Name);
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return -1;
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}
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}
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usb_set_configuration(lcd, 1);
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usleep(100);
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if (usb_claim_interface(lcd, 0) < 0) {
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error("%s: usb_claim_interface() failed!", Name);
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return -1;
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}
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usb_set_altinterface(lcd, 0);
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usb_get_string_simple(lcd, dev->descriptor.iProduct, product, sizeof(product));
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usb_get_string_simple(lcd, dev->descriptor.iManufacturer, manufacturer, sizeof(manufacturer));
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usb_get_string_simple(lcd, dev->descriptor.iSerialNumber, serialnumber, sizeof(serialnumber));
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info("%s: Manufacturer='%s' Product='%s' SerialNumber='%s'", Name, manufacturer, product, serialnumber);
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return 0;
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}
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}
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}
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error("%s: could not find a picoLCD", Name);
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return -1;
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}
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static int drv_pL_close(void)
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{
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usb_release_interface(lcd, 0);
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usb_close(lcd);
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return 0;
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}
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static void drv_pL_send(unsigned char *data, int size)
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{
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usb_interrupt_write(lcd, USB_ENDPOINT_OUT + 1, (char *) data, size, 1000);
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}
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static int drv_pL_read(unsigned char *data, int size)
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{
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return usb_interrupt_read(lcd, USB_ENDPOINT_OUT + 1, (char *) data, size, 1000);
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}
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static void drv_pL_clear(void)
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{
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unsigned char cmd[1] = { 0x94 }; /* clear display */
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drv_pL_send(cmd, 1);
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}
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static int drv_pL_contrast(int contrast)
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{
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unsigned char cmd[2] = { 0x92 }; /* set contrast */
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if (contrast < 0)
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contrast = 0;
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if (contrast > 255)
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contrast = 255;
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cmd[1] = contrast;
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drv_pL_send(cmd, 2);
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return contrast;
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}
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static int drv_pL_backlight(int backlight)
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{
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unsigned char cmd[2] = { 0x91 }; /* set backlight */
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if (backlight < 0)
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backlight = 0;
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if (backlight > 1)
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backlight = 1;
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cmd[1] = backlight;
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drv_pL_send(cmd, 2);
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return backlight;
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}
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#define _USBLCD_MAX_DATA_LEN 24
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#define IN_REPORT_KEY_STATE 0x11
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static int drv_pL_gpi(int num)
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{
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int ret;
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unsigned char read_packet[_USBLCD_MAX_DATA_LEN];
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ret = drv_pL_read(read_packet, _USBLCD_MAX_DATA_LEN);
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if ((ret > 0) && (read_packet[0] == IN_REPORT_KEY_STATE)) {
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debug("picoLCD: pressed key= 0x%02x\n", read_packet[1]);
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return read_packet[1];
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}
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return 0;
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}
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static int drv_pL_gpo(int num, int val)
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{
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unsigned char cmd[2] = { 0x81 }; /* set GPO */
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if (num < 0)
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num = 0;
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if (num > 7)
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num = 7;
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if (val < 0)
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val = 0;
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if (val > 1)
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val = 1;
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/* set led bit to 1 or 0 */
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if (val)
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gpo |= 1 << num;
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else
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gpo &= ~(1 << num);
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cmd[1] = gpo;
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drv_pL_send(cmd, 2);
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return val;
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}
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static void drv_pL_write(const int row, const int col, const char *data, int len)
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{
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unsigned char cmd[64];
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int i;
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cmd[0] = 0x98; /* goto/write */
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cmd[1] = row;
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cmd[2] = col;
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cmd[3] = len;
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i = 4;
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while (len--) {
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cmd[i++] = *data++;
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}
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drv_pL_send(cmd, i);
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}
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static void drv_pL_defchar(const int ascii, const unsigned char *matrix)
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{
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unsigned char cmd[10] = { 0x9c }; /* define character */
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int i;
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cmd[1] = ascii;
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for (i = 0; i < 8; i++) {
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cmd[i + 2] = *matrix++ & 0x1f;
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}
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drv_pL_send(cmd, 10);
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}
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static int drv_pL_start(const char *section, const int quiet)
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{
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int rows = -1, cols = -1;
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int value;
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char *s;
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s = cfg_get(section, "Size", NULL);
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if (s == NULL || *s == '\0') {
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error("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
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return -1;
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}
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if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) {
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error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
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free(s);
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return -1;
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}
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DROWS = rows;
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DCOLS = cols;
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if (drv_pL_open() < 0) {
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return -1;
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}
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/* Init the command buffer */
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Buffer = (char *) malloc(1024);
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if (Buffer == NULL) {
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error("%s: coommand buffer could not be allocated: malloc() failed", Name);
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return -1;
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}
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BufPtr = Buffer;
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if (cfg_number(section, "Contrast", 0, 0, 255, &value) > 0) {
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info("Setting contrast to %d", value);
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drv_pL_contrast(value);
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}
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if (cfg_number(section, "Backlight", 0, 0, 1, &value) > 0) {
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info("Setting backlight to %d", value);
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drv_pL_backlight(value);
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}
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drv_pL_clear(); /* clear display */
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if (!quiet) {
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char buffer[40];
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qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
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if (drv_generic_text_greet(buffer, "http://www.picolcd.com")) {
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sleep(3);
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drv_pL_clear();
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}
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}
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return 0;
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}
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/****************************************/
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/*** plugins ***/
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/****************************************/
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static void plugin_contrast(RESULT * result, RESULT * arg1)
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{
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double contrast;
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contrast = drv_pL_contrast(R2N(arg1));
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SetResult(&result, R_NUMBER, &contrast);
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}
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static void plugin_backlight(RESULT * result, RESULT * arg1)
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{
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double backlight;
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backlight = drv_pL_backlight(R2N(arg1));
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SetResult(&result, R_NUMBER, &backlight);
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}
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static void plugin_gpo(RESULT * result, RESULT * argv[])
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{
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double gpo;
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gpo = drv_pL_gpo(R2N(argv[0]), R2N(argv[1]));
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SetResult(&result, R_NUMBER, &gpo);
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}
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/****************************************/
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/*** widget callbacks ***/
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/****************************************/
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/* using drv_generic_text_draw(W) */
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/* using drv_generic_text_icon_draw(W) */
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/* using drv_generic_text_bar_draw(W) */
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/****************************************/
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/*** exported functions ***/
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/****************************************/
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/* list models */
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int drv_pL_list(void)
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{
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printf("generic");
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return 0;
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}
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/* initialize driver & display */
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int drv_pL_init(const char *section, const int quiet)
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{
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WIDGET_CLASS wc;
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int ret;
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info("%s: %s", Name, "$Rev$");
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/* display preferences */
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XRES = 5; /* pixel width of one char */
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YRES = 8; /* pixel height of one char */
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CHARS = 8; /* number of user-defineable characters */
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CHAR0 = 0; /* ASCII of first user-defineable char */
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GPOS = 8;
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GPIS = 1;
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INVALIDATE = 1;
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GOTO_COST = 2; /* number of bytes a goto command requires */
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/* real worker functions */
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drv_generic_text_real_write = drv_pL_write;
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drv_generic_text_real_defchar = drv_pL_defchar;
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drv_generic_gpio_real_set = drv_pL_gpo;
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drv_generic_gpio_real_get = drv_pL_gpi;
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/* start display */
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if ((ret = drv_pL_start(section, quiet)) != 0)
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return ret;
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/* initialize generic text driver */
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if ((ret = drv_generic_text_init(section, Name)) != 0)
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return ret;
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/* initialize generic icon driver */
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if ((ret = drv_generic_text_icon_init()) != 0)
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return ret;
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/* initialize generic bar driver */
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if ((ret = drv_generic_text_bar_init(0)) != 0)
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return ret;
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drv_generic_text_bar_add_segment(0, 0, 255, 32);
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/* GPO's init */
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if ((ret = drv_generic_gpio_init(section, Name)) != 0)
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return ret;
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/* register text widget */
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wc = Widget_Text;
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wc.draw = drv_generic_text_draw;
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widget_register(&wc);
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/* register icon widget */
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wc = Widget_Icon;
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wc.draw = drv_generic_text_icon_draw;
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widget_register(&wc);
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/* register bar widget */
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wc = Widget_Bar;
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wc.draw = drv_generic_text_bar_draw;
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widget_register(&wc);
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/* register plugins */
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AddFunction("LCD::contrast", -1, plugin_contrast);
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AddFunction("LCD::backlight", -1, plugin_backlight);
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AddFunction("LCD::gpo", -1, plugin_gpo);
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return 0;
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}
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/* close driver & display */
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int drv_pL_quit(const int quiet)
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{
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info("%s: shutting down.", Name);
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drv_generic_text_quit();
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/* clear display */
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drv_pL_clear();
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/* say goodbye... */
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if (!quiet) {
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drv_generic_text_greet("goodbye!", NULL);
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}
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drv_pL_close();
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if (Buffer) {
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free(Buffer);
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Buffer = NULL;
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BufPtr = Buffer;
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}
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return (0);
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}
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DRIVER drv_picoLCD = {
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.name = Name,
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.list = drv_pL_list,
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.init = drv_pL_init,
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.quit = drv_pL_quit,
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};
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