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lcdproc/server/drivers/lcd.c
T
William Ferrell 82764f08e3 Thanks to Chris Debenham <chris.debenham@aus.sun.com>, the LCDproc server 
process LCDd now compiles and runs properly on Solaris! Additionally, he
has provided a new driver for a 16x2 LCD made by an Australian company.

I've compiled and executed this new code on a Solaris 2.6 box, and while I
don't have the display the new driver uses, LCDd tries to use it anyway,
fails (since the device isn't installed), and continues running, so this
looks solid!
2000-11-29 18:48:53 +00:00

702 lines
13 KiB
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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <string.h>
#include <sys/errno.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "../../shared/LL.h"
#include "lcd.h"
#include "drv_base.h"
#ifdef MTXORB_DRV
#include "MtxOrb.h"
#endif
#ifdef CFONTZ_DRV
#include "CFontz.h"
#endif
#ifdef LB216_DRV
#include "lb216.h"
#endif
#ifdef TEXT_DRV
#include "text.h"
#endif
#ifdef DEBUG_DRV
#include "debug.h"
#endif
#ifdef CURSES_DRV
#include "curses_drv.h"
#endif
#ifdef HD44780_DRV
#include "hd44780.h"
#endif
#ifdef SLI_DRV
#include "wirz-sli.h"
#endif
#ifdef JOY_DRV
#include "joy.h"
#endif
#ifdef IRMANIN_DRV
#include "irmanin.h"
#endif
#ifdef LIRCIN_DRV
#include "lircin.h"
#endif
// TODO: Make a Windows server, and clients...?
lcd_logical_driver lcd;
lcd_physical_driver drivers[] = {
{"base", drv_base_init,},
#ifdef MTXORB_DRV
{"MtxOrb", MtxOrb_init,},
#endif
#ifdef CFONTZ_DRV
{"CFontz", CFontz_init,},
#endif
#ifdef HD44780_DRV
{"HD44780", HD44780_init,},
#endif
#ifdef SLI_DRV
{"sli", sli_init,},
#endif
#ifdef LB216_DRV
{"LB216", LB216_init,},
#endif
#ifdef TEXT_DRV
{"text", text_init,},
#endif
#ifdef DEBUG_DRV
{"debug", debug_init,},
#endif
#ifdef CURSES_DRV
{"curses", curses_drv_init,},
#endif
#ifdef JOY_DRV
{"joy", joy_init,},
#endif
#ifdef IRMANIN_DRV
{"irmanin", irmanin_init,},
#endif
#ifdef LIRCIN_DRV
{"lircin", lircin_init,},
#endif
{NULL, NULL,},
};
LL *list;
////////////////////////////////////////////////////////////
// This sets up which driver to use and initializes stuff.
//
int
lcd_init (char *args)
{
// int i;
int err;
list = LL_new ();
if (!list) {
printf ("Error allocating driver list.\n");
return -1;
}
lcd_drv_init (NULL, NULL);
err = lcd_add_driver ("base", args);
lcd.wid = 20;
lcd.hgt = 4;
return err;
/*
drv_base_init(args);
for(i=0; drivers[i].name; i++)
{
if(!strcmp(driver, drivers[i].name))
{
return drivers[i].init(args);
}
}
printf("Invalid driver: %s\n", driver);
return -1;
*/
}
// TODO: lcd_remove_driver()
int
lcd_add_driver (char *driver, char *args)
{
int i;
lcd_logical_driver *add;
for (i = 0; drivers[i].name; i++) {
//printf("Checking driver: %s\n", drivers[i].name);
if (0 == strcmp (driver, drivers[i].name)) {
//printf("Found driver: %s (%s)\n", drivers[i].name, driver);
add = malloc (sizeof (lcd_logical_driver));
if (!add) {
printf ("Couldn't allocate driver \"%s\".\n", driver);
return -1;
}
//printf("Allocated driver\n");
memset (add, 0, sizeof (lcd_logical_driver));
add->wid = lcd.wid;
add->hgt = lcd.hgt;
add->cellwid = lcd.cellwid;
add->cellhgt = lcd.cellhgt;
// printf("LCD driver info:\n\twid: %i\thgt: %i\n",
// add->wid, add->hgt);
add->framebuf = malloc (add->wid * add->hgt);
if (!add->framebuf) {
printf ("Couldn't allocate framebuffer for driver \"%s\".\n", driver);
free (add);
return -1;
}
//printf("Allocated frame buffer\n");
LL_Push (list, (void *) add);
return drivers[i].init (add, args);
}
}
return -1;
}
// TODO: Put lcd_shutdown in the shutdown function...
int
lcd_shutdown ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
//printf("driver...\n");
lcd.framebuf = driver->framebuf;
if ((int) driver->close > 0) {
driver->close ();
} else if ((int) driver->close == -1) {
drv_base->close ();
}
LL_Shift (list);
// FIXME: This crashes!
//if(driver) free(driver);
//printf("...freed\n");
}
} while (LL_Length (list) > 0);
return 0;
}
int
lcd_drv_init (struct lcd_logical_driver *driver, char *args)
{
// printf("lcd_drv_init()\n");
lcd.wid = LCD_MAX_WID;
lcd.hgt = LCD_MAX_HGT;
lcd.framebuf = NULL;
/*
if(!lcd.framebuf)
lcd.framebuf = malloc(lcd.wid * lcd.hgt);
if(!lcd.framebuf)
{
lcd_drv_close();
return -1;
}
memset(lcd.framebuf, ' ', lcd.wid*lcd.hgt);
*/
// Debugging...
// if(lcd.framebuf) printf("Frame buffer: %i\n", (int)lcd.framebuf);
lcd.cellwid = 5;
lcd.cellhgt = 8;
// Set up these wrapper functions...
lcd.clear = lcd_drv_clear;
lcd.string = lcd_drv_string;
lcd.chr = lcd_drv_chr;
lcd.vbar = lcd_drv_vbar;
lcd.hbar = lcd_drv_hbar;
lcd.init_num = lcd_drv_init_num;
lcd.num = lcd_drv_num;
lcd.init = lcd_drv_init;
lcd.close = lcd_drv_close;
lcd.flush = lcd_drv_flush;
lcd.flush_box = lcd_drv_flush_box;
lcd.contrast = lcd_drv_contrast;
lcd.backlight = lcd_drv_backlight;
lcd.output = lcd_drv_output;
lcd.set_char = lcd_drv_set_char;
lcd.icon = lcd_drv_icon;
lcd.init_vbar = lcd_drv_init_vbar;
lcd.init_hbar = lcd_drv_init_hbar;
lcd.draw_frame = lcd_drv_draw_frame;
lcd.getkey = lcd_drv_getkey;
return 1; // 1 is arbitrary. (must be 1 or more)
}
//////////////////////////////////////////////////////////////////////
// All functions below here call their respective driver functions...
//
// The way it works is this:
// It loops through the list of drivers, calling each one to keep
// them all synchronized. During this loop...
// - First, set the framebuffer to point to the drivers' framebuffer.
// (this ensures that whatever driver gets called will operate on
// the correct buffer)
// - Then, it checks to see what sort of call to make.
// driver->func() > 0 means it should call the driver function.
// driver->func() == NULL means it should not make a call.
// driver->func() == -1 means it should call the generic driver.
//////////////////////////////////////////////////////////////////////
void
lcd_drv_close ()
{
lcd_logical_driver *driver;
// printf("lcd_drv_close()\n");
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->close > 0) {
printf ("Calling close()\n");
driver->close ();
} else if ((int) driver->close == -1) {
drv_base->close ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_clear ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->clear > 0)
driver->clear ();
else if ((int) driver->clear == -1) {
drv_base->clear ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_flush ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->flush > 0)
driver->flush ();
else if ((int) driver->flush == -1) {
drv_base->flush ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_string (int x, int y, char string[])
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->string > 0)
driver->string (x, y, string);
else if ((int) driver->string == -1) {
drv_base->string (x, y, string);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_chr (int x, int y, char c)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->chr > 0)
driver->chr (x, y, c);
else if ((int) driver->chr == -1) {
drv_base->chr (x, y, c);
}
}
} while (LL_Next (list) == 0);
}
int
lcd_drv_contrast (int contrast)
{
int res = 0;
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->contrast > 0) {
res = driver->contrast (contrast);
if (res >= 0)
return res;
}
/*
else if((int)driver->contrast == -1)
{
res=drv_base->contrast(contrast);
}
*/
}
} while (LL_Next (list) == 0);
return res;
}
void
lcd_drv_backlight (int on)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->backlight > 0)
driver->backlight (on);
else if ((int) driver->backlight == -1) {
drv_base->backlight (on);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_output (int on)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->output > 0)
driver->output (on);
else if ((int) driver->output == -1) {
drv_base->output (on);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_init_vbar ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->init_vbar > 0)
driver->init_vbar ();
else if ((int) driver->init_vbar == -1) {
drv_base->init_vbar ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_init_hbar ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->init_hbar > 0)
driver->init_hbar ();
else if ((int) driver->init_hbar == -1) {
drv_base->init_hbar ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_init_num ()
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->init_num > 0)
driver->init_num ();
else if ((int) driver->init_num == -1) {
drv_base->init_num ();
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_num (int x, int num)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->num > 0)
driver->num (x, num);
else if ((int) driver->num == -1) {
drv_base->num (x, num);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_set_char (int n, char *dat)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->set_char > 0)
driver->set_char (n, dat);
else if ((int) driver->set_char == -1) {
drv_base->set_char (n, dat);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_vbar (int x, int len)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->vbar > 0)
driver->vbar (x, len);
else if ((int) driver->vbar == -1) {
drv_base->vbar (x, len);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_hbar (int x, int y, int len)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->hbar > 0)
driver->hbar (x, y, len);
else if ((int) driver->hbar == -1) {
drv_base->hbar (x, y, len);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_icon (int which, char dest)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->icon > 0)
driver->icon (which, dest);
else if ((int) driver->icon == -1) {
drv_base->icon (which, dest);
}
}
} while (LL_Next (list) == 0);
}
void
lcd_drv_flush_box (int lft, int top, int rgt, int bot)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->flush_box > 0)
driver->flush_box (lft, top, rgt, bot);
else if ((int) driver->flush_box == -1) {
drv_base->flush_box (lft, top, rgt, bot);
}
}
} while (LL_Next (list) == 0);
}
// TODO: Check whether lcd.draw_frame() should really take a framebuffer
// TODO: as an argument, or if it should always use lcd.framebuf
void
lcd_drv_draw_frame (char *dat)
{
lcd_logical_driver *driver;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->draw_frame > 0)
driver->draw_frame (dat);
else if ((int) driver->draw_frame == -1) {
drv_base->draw_frame (dat);
}
}
} while (LL_Next (list) == 0);
}
char
lcd_drv_getkey ()
{
lcd_logical_driver *driver;
char key;
LL_Rewind (list);
do {
driver = (lcd_logical_driver *) LL_Get (list);
if (driver) {
lcd.framebuf = driver->framebuf;
if ((int) driver->getkey > 0) {
key = driver->getkey ();
if (key)
return key;
} else if ((int) driver->getkey == -1) {
key = drv_base->getkey ();
if (key)
return key;
}
}
} while (LL_Next (list) == 0);
return 0;
}
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