mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
78cace3b47
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@975 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
493 lines
11 KiB
C
493 lines
11 KiB
C
/* $Id$
|
|
* $URL$
|
|
*
|
|
* driver for picoLCD displays from mini-box.com
|
|
*
|
|
* Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.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;
|
|
|
|
|
|
|
|
/****************************************/
|
|
/*** 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_set_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 int drv_pL_read(unsigned char *data, int size)
|
|
{
|
|
return usb_interrupt_read(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;
|
|
}
|
|
|
|
#define _USBLCD_MAX_DATA_LEN 24
|
|
#define IN_REPORT_KEY_STATE 0x11
|
|
static int drv_pL_gpi( __attribute__ ((unused))
|
|
int num)
|
|
{
|
|
int ret;
|
|
unsigned char read_packet[_USBLCD_MAX_DATA_LEN];
|
|
ret = drv_pL_read(read_packet, _USBLCD_MAX_DATA_LEN);
|
|
if ((ret > 0) && (read_packet[0] == IN_REPORT_KEY_STATE)) {
|
|
debug("picoLCD: pressed key= 0x%02x\n", read_packet[1]);
|
|
return read_packet[1];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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("picoLCD 20x2 Text LCD");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* initialize driver & display */
|
|
int drv_pL_init(const char *section, const int quiet)
|
|
{
|
|
WIDGET_CLASS wc;
|
|
int ret;
|
|
|
|
info("%s: %s", Name, "$Rev$");
|
|
|
|
/* 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;
|
|
GPIS = 1;
|
|
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;
|
|
drv_generic_gpio_real_get = drv_pL_gpi;
|
|
|
|
/* 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,
|
|
};
|