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lcdproc/server/drivers/sed1330.c
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/*
* Driver for SED1330/1335 graphical displays
*
* EPSON has changed the the chip-labeling.
* SED1330 now is S1D13300 and SED1335 is S1D13305
*
* This driver drives the LCD in text mode.
* Probably the driver can easily be adapted to work for 1336 too.
*
* Moved the delay timing code by Charles Steinkuehler to timing.h.
* Guillaume Filion <gfk@logidac.com>, December 2001
*
* This file is released under the GNU General Public License. Refer to the
* COPYING file distributed with this package.
*
* Copyright (c) 2001-2003, Joris Robijn <joris@robijn.net>
* 2003, Michael Rohde <Micha.R@online.de>
*
*
* Changelog:
*
* November 2001, Joris Robijn:
* - Created the driver
* - Parts copied from HD44780 driver
* December 2001, Joris Robijn:
* - Adapted to v0.5 API
* June 2002, Joris Robijn:
* - Modified init things to support multiple font sizes
* - More calculations v.s. static init data
* - Finished keypad stuff
* May 2003, Micha_R
* - removing all the cursor visible/invisible stuff, because it produce much flicker
* (software rendering is now used (Joris))
* - added support for displays with 192x192 resulution (type 4 = Seiko G191D, but beware,
* this display has no controller. You need an SED1330/1335 based interface circuit).
* - fixed problem with clear display function. With displays for which the formula
* "display-hight / character hight" don't give a integer result, unusable lines at the
* bottom of the display wasn't cleared.
* - verified with SED1335. The only difference between the two chips is the minimum
* reset-raise-time (SED1330 = 1 ms, SED1335 = 0.2 ms)
* - added function sed1330_icon to get correct display of full blocks
* May 2003, Joris Robijn
* - Made bars have spaces between them (I hope people like this)
*
*
* IMPORTANT: MODULES OTHER THAN G321D
* ===================================
* If you are using a module other than the G321D, beware that the software
* has not been tested. You may need to adapt the initialization parameters
* to get it working properly.
*
*
*
*
* Connections
* ===========
*
* Connections below are for the G242C, G121C and G321D displays.
* Always consult documentation about the specific display before asuming
* the connections given here are also correct for your display !
*
* Ordered by LCD pins
* LCD pin? <---> pin LPT port
* ^RESET 1 1 ^STROBE
* ^RD 2 +5V
* ^WR 3 16 ^INIT
* SEL1 4 GND
* SEL2 5 GND
* ^CS 6 GND
* A0 7 17 ^SELECT_IN
* D0 8 2 D0
* D1 9 3 D1
* D2 10 4 D2
* D3 11 5 D3
* D4 12 6 D4
* D5 13 7 D5
* D6 14 8 D6
* D7 15 9 D7
* Vdd 16 +5V
* Vss 17 GND 18..25 GND
* V0 18 potmeter
* Vlc 19 -24V
* Frame 20 GND
* 10 ^ACK
* GND 11 BUSY
* 12 PAPEREND
* 13 ^SELECT
* 14 ^LF
* 15 ^ERROR
*
* Or ordered by the LPT port pins:
* LCD pin? <---> pin LPT port
* ^RESET 1 1 ^STROBE
* D0 8 2 D0
* D1 9 3 D1
* D2 10 4 D2
* D3 11 5 D3
* D4 12 6 D4
* D5 13 7 D5
* D6 14 8 D6
* D7 15 9 D7
* 10 ^ACK
* GND 11 BUSY
* 12 PAPEREND
* 13 ^SELECT
* 14 ^LF
* 15 ^ERROR
* ^WR 3 16 ^INIT
* A0 7 17 ^SELECT_IN
* Vss 17 GND 18..25 GND
* ^RD 2 +5V
* SEL1 4 GND
* SEL2 5 GND
* ^CS 6 GND
* Vdd 16 +5V
* V0 18 potmeter
* Vlc 19 -24V (not required for G242C)
* Frame 20 GND
*
* The potmeter should be connected like this on these display modules:
*
* === GND
* |
* .-.
* | |
* | |5k
* '-'
* |
* |
* .-.10k potmeter
* | |
* | |<----------------o V0
* | |
* '-'
* |
* O Vlc (= -24V )
*
* The G242C generates -24V internally. It is available on Vlc.
*
* To generate -24 from the +5V without an external power source, you can
* use the following circuit.
*
* 5V O------+----------+ pinout:
* | | _____
* | --- 100uF | _ |
* | --- 10V | (_) | <-3
* | | |_____|
* | +--------+--------+--------+ | max |
* |5 | | | | | 724 |
* --------- === GND C - | |_____|
* | | C coil | | | |||||
* | | C 47uH | |10k | |||||.
* | |4 | - | | | |
* | MAX724 |--------------+ | | 12345
* | or | | | |
* | MAX726 |1 | | |+
* | |-----------------------+ --- 47uF
* | | | | --- 50V
* | | | | |
* --------- | - |
* |2 |3 | | | |
* | | '---, | |1k |
* --- | SB160 / \ - |
* 100nF--- | ^T^ | |
* | | | | |
* +-----+----------------+--------+--------+----O -24V out
*
*
*
*
* Config options
* ==============
*
* With the display= option you should specify what display module you have.
* Accepted values are:
* display=G121C
* display=G242C
* display=G321D
* display=G191D
* display=G2446
* The port= value should be set to the LPT port address that the LCD is
* connected to. Examples:
* port=0x378
* port=0x278
* port=0x3BC
*
* The cellsize= value indicates the size of a character. Default:
* cellsize=6x10
*
*/
#include "lcd.h"
#include "sed1330.h"
#include "port.h"
#include "lpt-port.h"
#include "report.h"
#include "timing.h"
#define uPause timing_uPause
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#define min(a,b) (((a) < (b)) ? (a) : (b))
#define max(a,b) (((a) > (b)) ? (a) : (b))
// Autorepeat values
#define KEYPAD_AUTOREPEAT_DELAY 500
#define KEYPAD_AUTOREPEAT_FREQ 15
// LPT lines
#define A0 SEL
#define nRESET STRB
#define nWR INIT
// Command definitions
#define CMD_SYSTEM_SET 0x40
#define CMD_SLEEP_IN 0x53
#define CMD_DISP_DIS 0x58
#define CMD_DISP_EN 0x59
#define CMD_SCROLL 0x44
#define CMD_CSR_FORM 0x5D
#define CMD_CGRAM_ADR 0x5C
#define CMD_CSR_DIR_R 0x4C
#define CMD_CSR_DIR_L 0x4D
#define CMD_CSR_DIR_U 0x4E
#define CMD_CSR_DIR_D 0x4F
#define CMD_HDOT_SCR 0x5A
#define CMD_OVLAY 0x5B
#define CMD_CSRW 0x46
#define CMD_CSRR 0x47
#define CMD_MWRITE 0x42
#define CMD_MREAD 0x43
// Data definitions
#define KEYPAD_MAXX 5
#define KEYPAD_MAXY 8
#define TYPE_G321D 1
#define TYPE_G121C 2
#define TYPE_G242C 3
#define TYPE_G191D 4
#define TYPE_G2446 5
#define SCR1_L 0x00 // Memory locations
#define SCR1_H 0x00
#define SCR2_L 0x00
#define SCR2_H 0x06
typedef struct p {
int type;
int port;
char * keymap[KEYPAD_MAXX];
char * framebuf_text;
char * lcd_contents_text;
char * framebuf_graph;
char * lcd_contents_graph;
int width, height;
int cellwidth, cellheight;
int graph_width, graph_height;
int bytesperline, textlines_in_memory;
char have_keypad;
// keyMapDirect contains an array of the ascii-codes that should be generated
// when a directly connected key is pressed (not in matrix).
char *keyMapDirect[KEYPAD_MAXX];
// keyMapMatrix contrains an array with arrays of the ascii-codes that should be generated
// when a key in the matrix is pressed.
char *keyMapMatrix[KEYPAD_MAXY][KEYPAD_MAXX];
char *pressed_key;
int pressed_key_repetitions;
struct timeval pressed_key_time;
int stuckinputs;
} PrivateData;
static char *defaultKeyMapDirect[KEYPAD_MAXX] = { "Enter", "Up", "Down", "Escape", "F1" };
static char *defaultKeyMapMatrix[KEYPAD_MAXY][KEYPAD_MAXX] = {
{ "1", "2", "3", "A", "E" },
{ "4", "5", "6", "B", "F" },
{ "7", "8", "9", "C", "G" },
{ "*", "0", "#", "D", "H" },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL }};
// Vars for the server core
MODULE_EXPORT char * api_version = API_VERSION;
MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 1; // yes, we have no global variables (except for constants)
MODULE_EXPORT char *symbol_prefix = "sed1330_";
// Local functions
//void uPause (int usecs);
void sed1330_command( PrivateData * p, char command, int datacount, char * data );
void sed1330_rect( PrivateData * p, int x1, int y1, int x2, int y2, char pattern );
void sed1330_line ( PrivateData * p, int x1, int y1, int x2, int y2, char pattern );
inline void sed1330_set_pixel( PrivateData * p, int x, int y, int value );
unsigned char sed1330_scankeypad(PrivateData *p);
unsigned char sed1330_readkeypad (PrivateData *p, unsigned int YData);
/////////////////////////////////////////////////////////////////
// Init the driver and display
//
MODULE_EXPORT int
sed1330_init( Driver * drvthis, char *args )
{
char * s;
PrivateData * p;
char data[8];
debug( RPT_DEBUG, "%s( %p, args=\"%s\" )", __FUNCTION__, drvthis, args );
// Alocate and store private p
p = (PrivateData *) malloc( sizeof(PrivateData) );
if( ! p )
return -1;
if( drvthis->store_private_ptr( drvthis, p ) )
return -1;
// Clear keymap
memset( p->keymap, 0, sizeof(p->keymap) );
// READ THE CONFIG FILE
// Port
p->port = drvthis->config_get_int( drvthis->name, "port", 0, 0x278 );
// Char size
s = drvthis->config_get_string( drvthis->name, "cellsize", 0, NULL );
if( !s ) {
s = "6x10";
}
if( sscanf( s, "%dx%d", &(p->cellwidth), &(p->cellheight)) != 2 ) {
report( RPT_ERR, "SED1330: cannot interpret cellsize value: %s", s );
return -1;
}
if( p->cellwidth < 6 || p->cellwidth > 8
|| p->cellheight < 7 || p->cellheight > 16 ) {
report( RPT_ERR, "SED1330: cellsize exceeds allowed range of 6x7 to 8x16" );
return -1;
}
// Type
s = drvthis->config_get_string( drvthis->name, "type", 0, NULL );
if( !s ) {
report( RPT_ERR, "SED1330: you need to specify the display type" );
return -1;
} else if( strcmp( s, "G321D" ) == 0 ) {
p->type = TYPE_G321D;
p->graph_width = 320;
p->graph_height = 200;
} else if( strcmp( s, "G121C" ) == 0 ) {
p->type = TYPE_G121C;
p->graph_width = 128;
p->graph_height = 128;
} else if( strcmp( s, "G242C" ) == 0 ) {
p->type = TYPE_G242C;
p->graph_width = 240;
p->graph_height = 128;
} else if( strcmp( s, "G191D" ) == 0 ) {
p->type = TYPE_G191D;
p->graph_width = 192;
p->graph_height = 192;
} else if( strcmp( s, "G2446" ) == 0 ) {
p->type = TYPE_G2446;
p->graph_width = 256;
p->graph_height = 64;
} else {
report( RPT_ERR, "SED1330: Unknown display type: %s", s );
return -1;
}
report( RPT_INFO, "SED1330: Using LCD type: %s", s );
// Keypad ?
p->have_keypad = drvthis->config_get_bool( drvthis->name, "keypad", 0, 0 );
// Keymap
if ( p->have_keypad ) {
int x, y;
// Read keymap
for( x=0; x<KEYPAD_MAXX; x++ ) {
char buf[40];
// First fill with default value
p->keyMapDirect[x] = defaultKeyMapDirect[x];
// Read config value
sprintf( buf, "keydirect_%1d", x+1 );
s = drvthis->config_get_string( drvthis->name, buf, 0, NULL );
// Was a key specified in the config file ?
if( s ) {
p->keyMapDirect[x] = strdup( s );
report( RPT_INFO, "SED1330: Direct key %d: \"%s\"", x, s );
}
}
for( x=0; x<KEYPAD_MAXX; x++ ) {
for( y=0; y<KEYPAD_MAXY; y++ ) {
char buf[40];
// First fill with default value
p->keyMapMatrix[y][x] = defaultKeyMapMatrix[y][x];
// Read config value
sprintf( buf, "keymatrix_%1d_%d", x+1, y+1 );
s = drvthis->config_get_string( drvthis->name, buf, 0, NULL );
// Was a key specified in the config file ?
if( s ) {
p->keyMapMatrix[y][x] = strdup( s );
report( RPT_INFO, "SED1330: Matrix key %d,%d: \"%s\"", x, y, s );
}
}
}
}
// Calculate some sizes
p->width = p->graph_width / p->cellwidth;
p->height = p->graph_height / p->cellheight;
p->bytesperline = (p->graph_width - 1 ) / p->cellwidth + 1;
p->textlines_in_memory = (p->graph_height - 1 ) / p->cellheight + 1;
report( RPT_INFO, "SED1330: Text size: %dx%d", p->width, p->height );
report( RPT_INFO, "SED1330: Cell size: %dx%d", p->cellwidth, p->cellheight );
report( RPT_INFO, "SED1330: Graphical size: %dx%d", p->graph_width, p->graph_height );
// Allocate framebuffer
p->framebuf_text = (unsigned char *) malloc( p->bytesperline * p->textlines_in_memory );
if( ! p->framebuf_text )
return -1;
memset( p->framebuf_text, ' ', p->bytesperline * p->textlines_in_memory );
p->lcd_contents_text = (unsigned char *) malloc( p->bytesperline * p->textlines_in_memory );
if( ! p->lcd_contents_text )
return -1;
memset( p->lcd_contents_text, 0, p->bytesperline * p->textlines_in_memory );
p->framebuf_graph = (unsigned char *) malloc( p->bytesperline * p->graph_height );
if( ! p->framebuf_graph )
return -1;
memset( p->framebuf_graph, 0, p->bytesperline * p->graph_height );
p->lcd_contents_graph = (unsigned char *) malloc( p->bytesperline * p->graph_height );
if( ! p->lcd_contents_graph )
return -1;
memset( p->lcd_contents_graph, 0xFF, p->bytesperline * p->graph_height );
// Arrange for access to port
debug( RPT_DEBUG, "%s: getting port access", __FUNCTION__ );
port_access(p->port);
port_access(p->port+1);
port_access(p->port+2);
if (timing_init() == -1)
return -1;
// INITIALIZE THE LCD
// End reset-state
debug( RPT_DEBUG, "%s: initializing LCD", __FUNCTION__ );
port_out( p->port+2, (nWR) ^ OUTMASK ); // raise ^RD and ^WR
port_out( p->port+2, (nRESET|nWR) ^ OUTMASK ); // lower RESET
uPause( 200 );
port_out( p->port+2, (nWR) ^ OUTMASK ); // raise RESET
uPause( 200 );
port_out( p->port+2, (nRESET|nWR) ^ OUTMASK ); // lower RESET
uPause( 4000 );
switch( p->type ) {
case TYPE_G321D:
data[4] = 0x38;
break;
case TYPE_G121C:
data[4] = 0x7F; // ? please confirm these numbers
break;
case TYPE_G242C:
data[4] = 0x7F; // ?
break;
case TYPE_G2446:
data[4] = 0x7F; // ?
break;
case TYPE_G191D:
data[4] = 0x5c; // ?
break;
default:
return -1;
}
data[0] = 0x30;
data[1] = 0x80 + p->cellwidth - 1;
data[2] = p->cellheight - 1;
data[3] = p->width - 1;
// data[4] should be filled already
// TC/R = ((clock / (refresh * (L/F - 1))) - 1) / 9
data[5] = p->graph_height - 1;
data[6] = p->bytesperline;
data[7] = 0;
sed1330_command( p, CMD_SYSTEM_SET, 8, data );
// TODO: The memory locations need to be calculated !
sed1330_command( p, CMD_SCROLL, 6, ((char[6]) {SCR1_L,SCR1_H,0xC7,SCR2_L,SCR2_H,0xC7}) ); // screen1 and screen2 memory locations
data[0] = p->cellwidth-1;
data[1] = 7;
sed1330_command( p, CMD_CSR_FORM, 2, data ); // set cursor size
sed1330_command( p, CMD_HDOT_SCR, 1, ((char[1]) {0x00}) ); // horizontal pixel shift=0
sed1330_command( p, CMD_OVLAY, 1, ((char[1]) {0x01}) ); // XOR mode, screen1 text, screen3 text (screen2 and screen4 are always graph)
sed1330_command( p, CMD_DISP_DIS, 1, ((char[1]) {0x14}) ); // display off,set cursor off, screen1 on, screen2 on, screen3 off
sed1330_command( p, CMD_CSR_DIR_R, 0, NULL ); // cursor move right
sed1330_flush( drvthis ); // Clear the contents of the LCD
sed1330_command( p, CMD_DISP_EN, 0, NULL ); // And display on
return 0;
}
/////////////////////////////////////////////////////////////////
// Send a command and accompanying p
// INTERNAL
//
void
sed1330_command( PrivateData * p, char command, int datacount, char * data )
{
int i;
int port = p->port;
port_out( port+2, (nRESET|nWR|A0) ^ OUTMASK ); // set A0 to indicate command
port_out( port, command ); // set up p
port_out( port+2, (nRESET|A0) ^ OUTMASK ); // activate ^WR
port_out( port+2, (nRESET|nWR|A0) ^ OUTMASK ); // deactivate ^WR again
port_out( port+2, (nRESET|nWR) ^ OUTMASK ); // clear A0 to indicate p
for( i=0; i<datacount; i ++ ) {
port_out( port, data[i] ); // set up data
port_out( port+2, (nRESET) ^ OUTMASK ); // activate ^WR
port_out( port+2, (nRESET|nWR) ^ OUTMASK ); // deactivate ^WR again
}
}
/////////////////////////////////////////////////////////////////
// Close the display
//
MODULE_EXPORT void
sed1330_close( Driver * drvthis )
{
PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s()", __FUNCTION__ );
free( p );
}
/////////////////////////////////////////////////////////////////
// Returns the display width
//
MODULE_EXPORT int
sed1330_width( Driver * drvthis )
{
PrivateData * p = drvthis->private_data;
debug( RPT_INFO, "%s()", __FUNCTION__ );
return p->width;
}
/////////////////////////////////////////////////////////////////
// Returns the display height
//
MODULE_EXPORT int
sed1330_height( Driver * drvthis )
{
PrivateData * p = drvthis->private_data;
debug( RPT_INFO, "%s()", __FUNCTION__ );
return p->height;
}
/////////////////////////////////////////////////////////////////
// Clear the framebuffer
//
MODULE_EXPORT void
sed1330_clear( Driver * drvthis )
{
PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s()", __FUNCTION__ );
memset( p->framebuf_text, ' ', p->bytesperline * p->textlines_in_memory);
memset( p->framebuf_graph, 0, p->bytesperline * p->graph_height );
}
/////////////////////////////////////////////////////////////////
// Place a string in the framebuffer
//
MODULE_EXPORT void
sed1330_string( Driver * drvthis, int x, int y, char *str )
{
PrivateData * p = drvthis->private_data;
char * dest;
int offset, len;
debug( RPT_DEBUG, "%s( x=%d, y=%d, str=\"%s\" )", __FUNCTION__, x, y, str );
if( y < 1 || y > p->height ) {
return; // outside framebuf
}
// Calculate offset and length to write
if( x < 1 ) {
offset = (1 - x);
x = 1;
} else {
offset = 0;
}
len = strlen(str) - offset;
if( len > p->width - x + 1 ) {
len = p->width - x + 1;
}
// Calculate destination address
dest = p->framebuf_text + (y-1)*p->bytesperline + (x-1);
// And write
memcpy( dest, str, len );
}
/////////////////////////////////////////////////////////////////
// Place a character in the framebuffer
//
MODULE_EXPORT void
sed1330_chr( Driver * drvthis, int x, int y, char c )
{
PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s( x=%d, y=%d, c='%c' )", __FUNCTION__, x, y, c );
if( y < 1 || y > p->height || x < 1 || x > p->width ) {
return; // outside framebuf
}
p->framebuf_text[(y-1)*p->bytesperline + (x-1)] = c;
}
/////////////////////////////////////////////////////////////////
// Flush the framebuffer to the display
//
MODULE_EXPORT void
sed1330_flush( Driver * drvthis )
{
PrivateData * p = drvthis->private_data;
unsigned int pos, start_pos, nr_equal, fblen, len, cursor_pos;
char csrloc[2];
debug( RPT_DEBUG, "%s()", __FUNCTION__ );
/* sed1330_command( p, CMD_DISP_EN, 1, ((char[1]) {0x14}) ); // cursor off */
// TODO: Flickering here needs to be prevented
fblen = p->bytesperline * p->textlines_in_memory;
for( pos=0; pos<fblen; ) {
start_pos = pos;
for( nr_equal=0; pos<fblen && nr_equal<4; pos++ ) {
if( p->lcd_contents_text[pos] == p->framebuf_text[pos] ) {
nr_equal ++;
} else {
nr_equal = 0;
}
}
len = pos - start_pos - nr_equal;
if( len > 0 ) {
cursor_pos = start_pos + 256 * SCR1_H + SCR1_L;
csrloc[0] = cursor_pos % 256;
csrloc[1] = cursor_pos / 256;
sed1330_command( p, CMD_CSRW, 2, csrloc );
sed1330_command( p, CMD_MWRITE, len, p->framebuf_text + start_pos );
memcpy( p->lcd_contents_text + start_pos, p->framebuf_text + start_pos, len );
}
}
fblen = p->bytesperline * p->graph_height;
for( pos=0; pos<fblen; ) {
start_pos = pos;
for( nr_equal=0; pos<fblen && nr_equal<4; pos++ ) {
if( p->lcd_contents_graph[pos] == p->framebuf_graph[pos] ) {
nr_equal ++;
} else {
nr_equal = 0;
}
}
len = pos - start_pos - nr_equal;
if( len > 0 ) {
cursor_pos = start_pos + 256 * SCR2_H + SCR2_L;
csrloc[0] = cursor_pos % 256;
csrloc[1] = cursor_pos / 256;
sed1330_command( p, CMD_CSRW, 2, csrloc );
sed1330_command( p, CMD_MWRITE, len, p->framebuf_graph + start_pos );
memcpy( p->lcd_contents_graph + start_pos, p->framebuf_graph + start_pos, len );
}
}
}
/////////////////////////////////////////////////////////////////
// Sets the backlight on or off
//
MODULE_EXPORT void
sed1330_backlight( Driver * drvthis, int on )
{
//PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s( on=%d )", __FUNCTION__, on );
// unimplemented
}
/////////////////////////////////////////////////////////////////
// Draws a rectangle
// INTERNAL
//
void
sed1330_rect ( PrivateData * p, int x1, int y1, int x2, int y2, char pattern )
/* pattern: 0=clear 1=set later more patterns ? */
{
int x, y;
// Swap coordinates if needed
if( x1>x2 ) {
int swap;
swap=x1;
x1=x2;
x2=swap;
}
if( y1>y2 ) {
int swap;
swap=y1;
y1=y2;
y2=swap;
}
for( x=x1; x<=x2; x++ ) {
for( y=y1; y<=y2; y++ ) {
sed1330_set_pixel( p, x, y, pattern );
}
}
}
/////////////////////////////////////////////////////////////////
// Draws a line
// INTERNAL
//
void
sed1330_line ( PrivateData * p, int x1, int y1, int x2, int y2, char pattern )
/* pattern: 0=clear 1=set later more patterns ? */
{
int x, y;
int more_x;
/* Swap coordinates if needed. We want to draw the line from left
* to right.
*/
if( x1>x2 ) {
int swap;
swap=x1; x1=x2; x2=swap;
swap=y1; y1=y2; y2=swap;
}
/* Draw from left to right... */
more_x = 1;
for( x=x1, y=y1; x<=x2; x++ ) {
int more_y = 1; /* always draw one pixel */
while( more_y ) {
/* set the pixel */
sed1330_set_pixel( p, x, y, pattern );
/* Check what we need to do next */
if( y1 < y2 ) {
more_y = (y<=y2);
if( x1 != x2 ) {
more_y &= ((float)y+0.5-y1) < ((float) x+0.5-x1) * (y2-y1) / ((float) x2-x1) ;
}
} else {
more_y = (y>=y2);
if( x1 != x2 ) {
more_y &= ((float)y+0.5-y1) > ((float) x+0.5-x1) * (y2-y1) / ((float) x2-x1) ;
}
}
/* Increment y if we should draw a other pixel for this x value */
if( more_y ) {
if( y1 < y2 ) {
y ++;
} else {
y --;
}
}
}
}
}
/////////////////////////////////////////////////////////////////
// Sets a specified pixel
// INTERNAL
//
inline void
sed1330_set_pixel( PrivateData * p, int x, int y, int value )
/* x, y are graph LCD coordinates, 0-based */
/* value: 0=clear 1=set */
{
unsigned int bytepos;
char bitmask;
bytepos = y*p->bytesperline + x/p->cellwidth;
bitmask = 0x80 >> (x % p->cellwidth);
if( value ) {
p->framebuf_graph[bytepos] |= bitmask; /* set it */
} else {
p->framebuf_graph[bytepos] &= ~bitmask; /* clear it */
}
}
/////////////////////////////////////////////////////////////////
// Draws a vertical bar at the bottom
//
MODULE_EXPORT void
sed1330_vbar( Driver * drvthis, int x, int y, int len, int promille, int pattern )
{
PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s( x=%d, y=%d, len=%d, promille=%d, pattern=%d )", __FUNCTION__, x, y, len, promille, pattern );
sed1330_rect ( p, (x-1) * p->cellwidth, y * p->cellheight, x * p->cellwidth - 2, y * p->cellheight - (long) len * p->cellheight * promille / 1000 - 1, 1 );
}
/////////////////////////////////////////////////////////////////
// Draws a horizontal bar to the right (len=pos)
// or to the left (len=neg)
//
MODULE_EXPORT void
sed1330_hbar( Driver * drvthis, int x, int y, int len, int promille, int pattern )
{
PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s( x=%d, y=%d, len=%d, promille=%d, pattern=%d )", __FUNCTION__, x, y, len, promille, pattern );
sed1330_rect ( p, (x-1) * p->cellwidth, (y-1) * p->cellheight, (x-1) * p->cellwidth + (long) len * p->cellwidth * promille / 1000 - 1, y * p->cellheight - 3, 1 );
}
/////////////////////////////////////////////////////////////////
// Writes a big number.
//
MODULE_EXPORT void
sed1330_num( Driver * drvthis, int x, int y, int num )
{
//PrivateData * p = drvthis->private_data;
debug( RPT_DEBUG, "%s( x=%d, y=%d, num=%d )", __FUNCTION__, x, y, num );
// TODO: add code here :)
}
/////////////////////////////////////////////////////////////
// Does the heartbeat...
// Or in fact a bouncing ball :)
//
MODULE_EXPORT void
sed1330_heartbeat( Driver * drvthis, int type )
{
PrivateData * p = drvthis->private_data;
static int timer = 0;
int pos;
//int whichIcon;
int n;
//char heartdata[2][CHARHEIGHT] = {
// { 0xFF, 0xFF, 0xAF, 0x07, 0x8F, 0xDF, 0xFF, 0xFF, 0x00, 0x00 },
// { 0xFF, 0xAF, 0x07, 0x07, 0x07, 0x8F, 0xDF, 0xFF, 0x00, 0x00 }
//};
char bouncing_ball[8][8] = {
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xCF, 0x87, 0x87, 0xCF },
{ 0xFF, 0xFF, 0xCF, 0x87, 0x87, 0xCF, 0xFF, 0xFF },
{ 0xFF, 0xCF, 0x87, 0x87, 0xCF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0x87, 0x87, 0x87, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xCF, 0x87, 0x87, 0xCF, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0x87, 0x87, 0x87, 0xFF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xCF, 0x87, 0x87, 0xCF, 0xFF, 0xFF, 0xFF },
{ 0xFF, 0xFF, 0xCF, 0x87, 0x87, 0xCF, 0xFF, 0xFF },
};
debug( RPT_DEBUG, "%s( type=%d )", __FUNCTION__, type );
if( type == HEARTBEAT_OFF ) return;
p->framebuf_text[p->width-1] = ' ';
//whichIcon = (! ((timer + 4) & 5));
pos = p->width - 1;
for( n=0; n < p->cellheight; n++ ) {
//p->framebuf_graph[pos] = heartdata[whichIcon][n];
if( n < 8 ) {
p->framebuf_graph[pos] = bouncing_ball[timer][n];
} else {
p->framebuf_graph[pos] = 0;
}
pos += p->bytesperline;
}
timer++;
timer %= 8;
}
/////////////////////////////////////////////////////////////
// Place an icon
//
MODULE_EXPORT int
sed1330_icon( Driver * drvthis, int x, int y, int icon )
{
switch( icon ) {
case ICON_BLOCK_FILLED:
sed1330_chr( drvthis, x, y, 255 );
break;
default:
return -1;
}
return 0;
}
/////////////////////////////////////////////////////////////
// Get a key from the keypad (if there is one)
//
MODULE_EXPORT char *
sed1330_get_key(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
unsigned char scancode;
char * keystr = NULL;
struct timeval curr_time, time_diff;
if( ! p->have_keypad ) return NULL;
gettimeofday(&curr_time,NULL);
scancode = sed1330_scankeypad(p);
if( scancode ) {
if( scancode & 0xF0 ) {
keystr = p->keyMapMatrix[((scancode&0xF0)>>4)-1][(scancode&0x0F)-1];
}
else {
keystr = p->keyMapDirect[scancode - 1];
}
}
if( keystr != NULL ) {
if (keystr == p->pressed_key) {
timersub (&curr_time, &(p->pressed_key_time), &time_diff);
if (((time_diff.tv_usec / 1000 + time_diff.tv_sec * 1000) - KEYPAD_AUTOREPEAT_DELAY) < 1000 * p->pressed_key_repetitions / KEYPAD_AUTOREPEAT_FREQ ) {
// The key is already pressed quite some time
// but it's not yet time to return a repeated keypress
return NULL;
}
// Otherwise a keypress will be returned
p->pressed_key_repetitions ++;
}
else {
// It's a new keypress
p->pressed_key_time = curr_time;
p->pressed_key_repetitions = 0;
report( RPT_INFO, "sed1330_get_key: Key pressed: %s (%d,%d)\n", keystr, scancode&0x0F, (scancode&0xF0)>>4 );
}
}
// Store the key for the next round
p->pressed_key = keystr;
return keystr;
}
/////////////////////////////////////////////////////////////
// Scan the keypad
//
// Called by get_key
//
unsigned char sed1330_scankeypad(PrivateData *p)
{
unsigned int keybits;
unsigned int shiftcount;
unsigned int shiftingbit;
unsigned int Ypattern;
unsigned int Yval;
signed char exp;
unsigned char scancode = 0;
// First check if a directly connected key is pressed
// Put all zeros on Y of keypad
keybits = sed1330_readkeypad (p, 0);
if (keybits) {
// A directly connected key was pressed
// Which key was it ?
shiftingbit = 1;
for (shiftcount=0; shiftcount<KEYPAD_MAXX && !scancode; shiftcount++) {
if ( keybits & shiftingbit) {
// Found ! Return from function.
scancode = shiftcount+1;
}
shiftingbit <<= 1;
}
}
else {
// Now check the matrix
// First check with all 1's
Ypattern = (1 << KEYPAD_MAXY) - 1;
if( sed1330_readkeypad (p, Ypattern)) {
// Yes, a key on the matrix is pressed
// OK, now we know a key is pressed.
// Determine which one it is
// First determine the row
// Do a 'binary search' to minimize I/O
Ypattern = 0;
Yval = 0;
for (exp=3; exp>=0; exp--) {
Ypattern = ((1 << (1 << exp)) - 1) << Yval;
keybits = sed1330_readkeypad (p, Ypattern);
if (!keybits) {
Yval += (1 << exp);
}
}
// Which key is pressed in that row ?
keybits = sed1330_readkeypad (p, 1<<Yval);
shiftingbit=1;
for (shiftcount=0; shiftcount<KEYPAD_MAXX && !scancode; shiftcount++) {
if ( keybits & shiftingbit) {
// Found !
scancode = (Yval+1) << 4 | (shiftcount+1);
}
shiftingbit <<= 1;
}
}
}
return scancode;
}
/////////////////////////////////////////////////////////////
// Read a keypad byte
//
// Called by scankeypad
//
unsigned char sed1330_readkeypad (PrivateData *p, unsigned int YData)
{
unsigned char readval;
// 8 bits output
// Convert the positive logic to the negative logic on the LPT port
port_out (p->port, ~YData & 0x00FF );
// Read inputs
readval = ~ port_in (p->port + 1) ^ INMASK;
// And convert value back (MSB first).
return (((readval & FAULT) / FAULT <<4) | /* pin 15 */
((readval & SELIN) / SELIN <<3) | /* pin 13 */
((readval & PAPEREND) / PAPEREND <<2) | /* pin 12 */
((readval & BUSY) / BUSY <<1) | /* pin 11 */
((readval & ACK) / ACK )) & ~p->stuckinputs; /* pin 10 */
}
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