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e37ae29f66aa4032ae29306bb6ebf4efffbdba47
lcdproc/server/drivers/lb216.c
T
ddouthitt 74153173c1 Fixed major bug: drivers that accepted size arguments could wind 
up with more than 80 characters (20x4) in their display, and thus
overwrite memory outside of the allocated 80 characterwframebuffer.

For example, using a 20x6 screen would do this.

All drivers now either ignore a missing framebuffer, or allocate it
themselves - the latter is prefered.
2001-09-27 23:46:55 +00:00

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/*
*
* Chris Debenham - eSun Systems Engineer <chris.debenham@aus.sun.com>
*
* Heres a bit more info on the display.
* It is the LB216 and is made by R.T.N. Australia
* The web page for it is http://www.nollet.com.au/
* It is a serial 16x2 LCD with software controllable backlight.
* They also make 40x4 displays (which I'll be getting one of soon :-) )
* 3 wire connection (5V,0V and serial), 2400 or 9600 bps.
* 8 custom characters
* 40*83.5MM size
* made in australia :-)
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_NCURSES_H
# include <ncurses.h>
#else
# include <curses.h>
#endif
#include "shared/str.h"
#include "shared/debug.h"
#include "lcd.h"
#include "lb216.h"
#include "drv_base.h"
#include "render.h"
static int custom=0;
typedef enum {
hbar = 1,
vbar = 2,
bign = 4,
beat = 8 } custom_type;
static int fd;
static void LB216_hidecursor();
static void LB216_reboot();
// TODO: Get rid of this variable?
lcd_logical_driver *LB216;
// TODO: Get the frame buffers working right
/////////////////////////////////////////////////////////////////
// Opens com port and sets baud correctly...
//
int LB216_init(lcd_logical_driver *driver, char *args)
{
char *argv[64];
int argc;
struct termios portset;
int i;
int tmp;
int reboot=0;
char device[256] = "/dev/lcd";
int speed=B9600;
LB216 = driver;
//debug("LB216_init: Args(all): %s\n", args);
argc = get_args(argv, args, 64);
/*
for(i=0; i<argc; i++)
{
printf("Arg(%i): %s\n", i, argv[i]);
}
*/
for(i=0; i<argc; i++)
{
//printf("Arg(%i): %s\n", i, argv[i]);
if(0 == strcmp(argv[i], "-d") ||
0 == strcmp(argv[i], "--device"))
{
if(i + 1 > argc) {
fprintf(stderr, "LB216_init: %s requires an argument\n",
argv[i]);
return -1;
}
strcpy(device, argv[++i]);
}
else if(0 == strcmp(argv[i], "-b") ||
0 == strcmp(argv[i], "--brightness"))
{
if(i + 1 > argc) {
fprintf(stderr, "LB216_init: %s requires an argument\n",
argv[i]);
return -1;
}
tmp = atoi(argv[++i]);
if((tmp < 0) || (tmp > 255)){
fprintf(stderr, "LB216_init: %s argument must between 0 and 255. Using default value.\n",
argv[i]);
} else backlight_brightness = tmp;
}
else if(0 == strcmp(argv[i], "-s") ||
0 == strcmp(argv[i], "--speed"))
{
if(i + 1 > argc) {
fprintf(stderr, "LB216_init: %s requires an argument\n",
argv[i]);
return -1;
}
tmp = atoi(argv[++i]);
if(tmp==2400) speed=B2400;
else if(tmp==9600) speed=B9600;
else {
fprintf(stderr, "LB216_init: %s argument must be 2400, or 9600. Using default value.\n",
argv[i]);
}
}
else if(0 == strcmp(argv[i], "-h") ||
0 == strcmp(argv[i], "--help"))
{
printf("LCDproc LB216 LCD driver\n"
"\t-d\t--device\tSelect the output device to use [/dev/lcd]\n"
"\t-t\t--type\t\tSelect the LCD type (size) [16x2]\n"
"\t-b\t--brightness\tSet the initial brightness [255]\n"
"\t-s\t--speed\t\tSet the communication speed [9600]\n"
"\t-r\t--reboot\tReinitialize the LCD's BIOS\n"
"\t-h\t--help\t\tShow this help information\n");
return -1;
}
else if(0 == strcmp(argv[i], "-r") ||
0 == strcmp(argv[i], "--reboot"))
{
printf("LCDd: rebooting LB216 LCD...\n");
reboot=1;
}
else
{
printf("Invalid parameter: %s\n", argv[i]);
}
}
// Set up io port correctly, and open it...
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1)
{
fprintf(stderr, "LB216_init: failed (%s)\n", strerror(errno));
return -1;
}
//else fprintf(stderr, "LB216_init: opened device %s\n", device);
tcgetattr(fd, &portset);
// We use RAW mode
#ifdef HAVE_CFMAKERAW
// The easy way
cfmakeraw( &portset );
#else
// The hard way
portset.c_iflag &= ~( IGNBRK | BRKINT | PARMRK | ISTRIP
| INLCR | IGNCR | ICRNL | IXON );
portset.c_oflag &= ~OPOST;
portset.c_lflag &= ~( ECHO | ECHONL | ICANON | ISIG | IEXTEN );
portset.c_cflag &= ~( CSIZE | PARENB | CRTSCTS );
portset.c_cflag |= CS8 | CREAD | CLOCAL ;
#endif
// Set port speed
cfsetospeed (&portset, speed);
cfsetispeed (&portset, B0);
// Do it...
tcsetattr(fd, TCSANOW, &portset);
// Set display-specific stuff..
if(reboot)
{
LB216_reboot();
sleep(4);
reboot=0;
}
sleep(1);
LB216_hidecursor();
LB216_backlight(backlight_brightness);
// Set the functions the driver supports...
driver->clear = LB216_clear;
driver->string = LB216_string;
driver->chr = LB216_chr;
driver->vbar = LB216_vbar;
driver->init_vbar = LB216_init_vbar;
driver->hbar = LB216_hbar;
driver->init_hbar = LB216_init_hbar;
driver->num = NULL;
driver->init_num = NULL;
driver->init = LB216_init;
driver->close = LB216_close;
driver->flush = LB216_flush;
driver->flush_box = NULL;
driver->contrast = NULL;
driver->backlight = LB216_backlight;
driver->set_char = LB216_set_char;
driver->icon = LB216_icon;
driver->draw_frame = LB216_draw_frame;
LB216->cellwid = 5;
LB216->cellhgt = 8;
debug("LB216: foo!\n");
return fd;
}
/////////////////////////////////////////////////////////////////
// Clean-up
//
void LB216_close()
{
close (fd);
if(LB216->framebuf) free(LB216->framebuf);
LB216->framebuf = NULL;
}
/////////////////////////////////////////////////////////////////
// Clears the LCD screen
//
void
LB216_clear ()
{
memset (LB216->framebuf, ' ', LB216->wid * LB216->hgt);
}
void LB216_flush()
{
LB216_draw_frame(LB216->framebuf);
}
/////////////////////////////////////////////////////////////////
// Prints a character on the lcd display, at position (x,y). The
// upper-left is (1,1), and the lower right should be (16,2).
//
void LB216_chr(int x, int y, char c)
{
//y--;
// x--;
//if(c < 32 && c >= 0) c += 128;
// LB216->framebuf[(y*LB216->wid) + x] = c;
char chr[1];
snprintf (chr, sizeof(chr), "%c", c);
LB216_string (x, y, chr);
}
/////////////////////////////////////////////////////////////////
// Sets the backlight on or off -- can be done quickly for
// an intermediate brightness...
//
void LB216_backlight(int on)
{
char out[4];
if(on)
{
snprintf (out, sizeof(out), "%c%c", 254, 253);
}
else
{
snprintf (out, sizeof(out), "%c%c", 254, 252);
}
write(fd, out, 2);
}
/////////////////////////////////////////////////////////////////
// Get rid of the blinking curson
//
static void LB216_hidecursor()
{
char out[4];
snprintf (out, sizeof(out), "%c%c", 254,12);
write(fd, out, 2);
}
/////////////////////////////////////////////////////////////////
// Reset the display bios
//
static void LB216_reboot()
{
char out[4];
snprintf (out, sizeof(out), "%c%c", 254,1);
write(fd, out, 2);
}
/////////////////////////////////////////////////////////////
// Blasts a single frame onscreen, to the lcd...
//
// Input is a character array, sized LB216->wid*LB216->hgt
//
void LB216_draw_frame(char *dat)
{
char out[LCD_MAX_WIDTH * LCD_MAX_HEIGHT];
int i,j;
if(!dat) return;
snprintf (out, sizeof(out), "%c%c", 254,80);
write(fd, out, 2);
for(j=0; j<LB216->hgt; j++) {
if (j>=2) {
snprintf (out, sizeof(out),"%c%c",254,148+(64*(j-2)));
} else {
snprintf (out, sizeof(out),"%c%c",254,128+(64*(j)));
}
write(fd, out, 2);
for(i=0; i<LB216->wid; i++) {
snprintf (out, sizeof(out),"%c",dat[i+(j*LB216->wid)]);
write(fd, out, 1);
}
}
}
void LB216_string (int x, int y, char string[])
{
int i;
char c;
//printf("%d,%d:%s\n",x,y,string);
y--;x--;
for(i=0; string[i]; i++)
{
c = string[i];
switch(c)
{
case '\254': c = '#'; break;
}
LB216->framebuf[(y*LB216->wid) + x+i] = c;
}
}
/////////////////////////////////////////////////////////////////
// Sets up for vertical bars. Call before LB216->vbar()
//
void LB216_init_vbar()
{
char a[] = {
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
};
char b[] = {
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
};
char c[] = {
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
char d[] = {
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
char e[] = {
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
char f[] = {
0,0,0,0,0,
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
char g[] = {
0,0,0,0,0,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
if(custom!=vbar) {
LB216_set_char(1,a);
LB216_set_char(2,b);
LB216_set_char(3,c);
LB216_set_char(4,d);
LB216_set_char(5,e);
LB216_set_char(6,f);
LB216_set_char(7,g);
custom=vbar;
}
}
/////////////////////////////////////////////////////////////////
// Inits horizontal bars...
//
void LB216_init_hbar()
{
char a[] = {
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
1,0,0,0,0,
};
char b[] = {
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
1,1,0,0,0,
};
char c[] = {
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
1,1,1,0,0,
};
char d[] = {
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
1,1,1,1,0,
};
char e[] = {
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
1,1,1,1,1,
};
if(custom!=hbar) {
LB216_set_char(1,a);
LB216_set_char(2,b);
LB216_set_char(3,c);
LB216_set_char(4,d);
LB216_set_char(5,e);
custom=hbar;
}
}
/////////////////////////////////////////////////////////////////
// Draws a vertical bar...
//
void LB216_vbar(int x, int len)
{
char map[9] = {32, 1, 2, 3, 4, 5, 6, 7, 255 };
int y;
for(y=LB216->hgt; y > 0 && len>0; y--)
{
if(len >= LB216->cellhgt) LB216_chr(x, y, 255);
else LB216_chr(x, y, map[len]);
len -= LB216->cellhgt;
}
}
/////////////////////////////////////////////////////////////////
// Draws a horizontal bar to the right.
//
void LB216_hbar(int x, int y, int len)
{
char map[7] = { 32, 1, 2, 3, 4, 5 };
for(; x<=LB216->wid && len>0; x++)
{
if(len >= LB216->cellwid) LB216_chr(x,y,map[5]);
else LB216_chr(x, y, map[len]);
//printf ("%d,",len);
len -= LB216->cellwid;
}
// printf ("\n");
}
/////////////////////////////////////////////////////////////////
// Sets a custom character from 0-7...
//
// For input, values > 0 mean "on" and values <= 0 are "off".
//
// The input is just an array of characters...
//
void LB216_set_char(int n, char *dat)
{
char out[4];
int row, col;
int letter;
if(n < 0 || n > 7) return;
n=64+(8*n);
if(!dat) return;
snprintf (out, sizeof(out), "%c%c", 254, n);
write(fd, out, 2);
for(row=0; row<LB216->cellhgt; row++)
{
letter = 1;
for(col=0; col<LB216->cellwid; col++)
{
letter <<= 1;
letter |= (dat[(row*LB216->cellwid) + col] > 0);
}
snprintf (out, sizeof(out),"%c",letter);
write(fd, out, 1);
}
}
void LB216_icon(int which, char dest)
{
char icons[3][8*8] = {
{
1,1,1,1,1, // Empty Heart
1,0,1,0,1,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,0,0,0,1,
1,1,0,1,1,
1,1,1,1,1,
},
{
1,1,1,1,1, // Filled Heart
1,0,1,0,1,
0,1,0,1,0,
0,1,1,1,0,
0,1,1,1,0,
1,0,1,0,1,
1,1,0,1,1,
1,1,1,1,1,
},
{
0,0,0,0,0, // Ellipsis
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
0,0,0,0,0,
1,0,1,0,1,
},
};
if(custom==bign) custom=beat;
LB216_set_char(dest, &icons[which][0]);
}
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