File: wirz-sli.c

package info (click to toggle)
lcdproc 0.5.9-3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 5,064 kB
  • sloc: ansic: 59,645; sh: 1,740; perl: 681; makefile: 417
file content (441 lines) | stat: -rw-r--r-- 11,381 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
/** \file server/drivers/wirz-sli.c
 * LCDd \c sli driver for the SLI devices by Wirz, http://www.wirz.com/.
 */

/*	wirz-sli.c -- Source file for LCDproc Wirz SLI driver
	Copyright (C) 1999 Horizon Technologies-http://horizon.pair.com/
	Written by Bryan Rittmeyer <bryanr@pair.com> - Released under GPL

        LCD info: http://www.wirz.com/                               */

#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

#include "lcd.h"
#include "wirz-sli.h"
#include "shared/report.h"
#include "lcd_lib.h"

#define SLI_DEFAULT_DEVICE	"/dev/lcd"

/** private data for the \c sli driver */
typedef struct sli_private_data {
	char device[256];
	int speed;
	int fd;
	unsigned char *framebuf;
	int width;
	int height;
	int cellwidth;
	int cellheight;
	CGmode custom;
} PrivateData;


// Vars for the server core
MODULE_EXPORT char *api_version = API_VERSION;
MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 0;
MODULE_EXPORT char *symbol_prefix = "sli_";


/////////////////////////////////////////////////////////////////
// Opens com port and sets baud correctly...
//
MODULE_EXPORT int
sli_init (Driver *drvthis)
{
	PrivateData *p;
	struct termios portset;
	char out[2];

	/* Allocate and store private data */
	p = (PrivateData *) calloc(1, sizeof(PrivateData));
	if (p == NULL)
		return -1;
	if (drvthis->store_private_ptr(drvthis, p))
		return -1;

	/* initialize private data */
	p->custom = standard;
	p->fd = -1;
	p->framebuf = NULL;
	p->width = 16;
	p->height = 2;
	p->cellwidth = LCD_DEFAULT_CELLWIDTH;
	p->cellheight = LCD_DEFAULT_CELLHEIGHT;

	/* Read config file */

	/* What device should be used */
	strncpy(p->device, drvthis->config_get_string(drvthis->name, "Device", 0,
						   SLI_DEFAULT_DEVICE), sizeof(p->device));
	p->device[sizeof(p->device)-1] = '\0';
	report(RPT_INFO, "%s: using Device %s", drvthis->name, p->device);

	/* What speed to use */
	p->speed = drvthis->config_get_int(drvthis->name, "Speed", 0, 19200);

	if (p->speed == 1200)        p->speed = B1200;
	else if (p->speed == 2400)   p->speed = B2400;
	else if (p->speed == 9600)   p->speed = B9600;
	else if (p->speed == 19200)  p->speed = B19200;
	else if (p->speed == 38400)  p->speed = B38400;
	else if (p->speed == 57600)  p->speed = B57600;
	else if (p->speed == 115200) p->speed = B115200;
	else {
		report(RPT_WARNING, "%s: illegal Speed: %d; must be one of 1200, 2400, 9600, 19200, 38400, 57600, or 115200; using default %d",
				drvthis->name, p->speed, 19200);
		p->speed = B19200;
	}

	/* End of config file parsing */

	// Set up io port correctly, and open it...
	p->fd = open(p->device, O_RDWR | O_NOCTTY | O_NDELAY);
	if (p->fd == -1) {
		report(RPT_ERR, "%s: open(%s) failed (%s)", drvthis->name, p->device, strerror(errno));
		return -1;
	}
	report(RPT_DEBUG, "%s: opened device %s", drvthis->name, p->device);

	tcgetattr(p->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, p->speed);
	cfsetispeed(&portset, B0);

	// Do it...
	tcsetattr(p->fd, TCSANOW, &portset);

	p->framebuf = (unsigned char *) malloc(p->width * p->height);
	if (p->framebuf == NULL) {
		report(RPT_ERR, "%s: unable to create framebuffer", drvthis->name);
		return -1;
	}
	memset(p->framebuf, ' ', p->width * p->height);

	/* Initialize SLI using autobaud detection, and then turn off cursor
	   and clear screen */
	usleep(150000);			  /* 150ms delay to allow SLI to power on */
	out[0] = 13;			  /* CR for SLI autobaud */
	write(p->fd, out, 1);
	usleep(3000);			  /* 3ms delay.. wait for it to autobaud */
	out[0] = 0x0FE;
	out[1] = 0x00C;			  /* No cursor */
	write(p->fd, out, 2);
	out[0] = 0x0FE;
	out[1] = 0x001;			  /* Clear LCD, not sure if this belongs here */
	write(p->fd, out, 2);

	report(RPT_DEBUG, "%s: init() done", drvthis->name);

	return 0;
}

/////////////////////////////////////////////////////////////////
// Clean up
//
MODULE_EXPORT void
sli_close (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	if ( p != NULL) {
		if (p->fd >= 0)
			close(p->fd);

		if (p->framebuf != NULL)
			free(p->framebuf);

		free(p);
	}
	drvthis->store_private_ptr(drvthis, NULL);
}

/////////////////////////////////////////////////////////////////
// Returns the display width
//
MODULE_EXPORT int
sli_width (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	return p->width;
}

/////////////////////////////////////////////////////////////////
// Returns the display height
//
MODULE_EXPORT int
sli_height (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	return p->height;
}

/////////////////////////////////////////////////////////////////
// Returns the display's cell width
//
MODULE_EXPORT int
sli_cellwidth (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	return p->cellwidth;
}

/////////////////////////////////////////////////////////////////
// Returns the display's cell height
//
MODULE_EXPORT int
sli_cellheight (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	return p->cellheight;
}

/////////////////////////////////////////////////////////////////
// Flush framebuffer to LCD
//
MODULE_EXPORT void
sli_flush (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;
	char out[2];

	/* Do the actual refresh */
	out[0] = 0x0FE;
	out[1] = 0x080;
	write(p->fd, out, 2);
	write(p->fd, &p->framebuf[0], p->width);
	usleep(10);
	write(p->fd, p->framebuf + p->width -1, p->width);
}

/////////////////////////////////////////////////////////////////
// Clears the LCD screen
//
MODULE_EXPORT void
sli_clear (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;

	memset(p->framebuf, ' ', p->width * p->height);
}

/////////////////////////////////////////////////////////////////
// Prints a string on the lcd display, at position (x,y).  The
// upper-left is (1,1), and the lower right should be (20,4).
//
MODULE_EXPORT void
sli_string (Driver *drvthis, int x, int y, const char string[])
{
	PrivateData *p = drvthis->private_data;
	int i;

	x--;				  // Convert 1-based coords to 0-based...
	y--;

	if ((y < 0) || (y >= p->height))
		return;

	for (i = 0; (string[i] != '\0') && (x < p->width); i++, x++) {
		if (x >= 0)
			p->framebuf[(y * p->width) + x] = string[i];
	}
}

/////////////////////////////////////////////////////////////////
// Prints a character on the lcd display, at position (x,y).  The
// upper-left is (1,1), and the lower right should be (20,4).
//
MODULE_EXPORT void
sli_chr (Driver *drvthis, int x, int y, char c)
{
	PrivateData *p = drvthis->private_data;

	y--;
	x--;

	if ((x >= 0) && (y >= 0) && (x < p->width) && (y < p->height))
		p->framebuf[(y * p->width) + x] = c;
}

/////////////////////////////////////////////////////////////////
// Sets up for vertical bars.  Call before sli->vbar()
//

/* Because of the way we do this (custom characters in CGRAM)
   we can't have both horizontal and vertical bars at once...
   this also appears to be a limitation of the Matrix Orbital
   modules so I will assume that all client coders know about it

   I think it would be cool to use triangular stuff for the non-full
   characters, so that you can do both bar types at once.. maybe I
   will release a new version of the SLI driver that attempts this */

static void
sli_init_vbar (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;
	static unsigned char vbar_char[7][8] = {
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F},
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F},
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F},
		{0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F},
		{0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F},
		{0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F},
		{0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F}
	};

	if (p->custom != vbar) {
		int i;
		for (i = 0; i < 7; i++)
			sli_set_char(drvthis, i + 1, vbar_char[i]);
		p->custom = vbar;
	}
}

/////////////////////////////////////////////////////////////////
// Inits horizontal bars...
//
static void
sli_init_hbar (Driver *drvthis)
{
	PrivateData *p = drvthis->private_data;
	static unsigned char hbar_char[4][8] = {
		{0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10},
		{0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18},
		{0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C},
		{0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E},
	};

	if (p->custom != hbar) {
		int i;
		for (i = 0; i < 4; i++)
			sli_set_char(drvthis, i + 1, hbar_char[i]);
		p->custom = hbar;
	}
}

/////////////////////////////////////////////////////////////////
// Draws a vertical bar...
//

/* It would be cool if you could start a vertical bar at any y
   like the horizontal bar routine can start at any x... but
   since we only have 2 lines anyway this is rather pointless
   for me to add                                               */

MODULE_EXPORT void
sli_vbar (Driver *drvthis, int x, int y, int len, int promille, int options)
{
	PrivateData *p = drvthis->private_data;

	sli_init_vbar(drvthis);

	lib_vbar_static(drvthis, x, y, len, promille, options, p->cellheight, 0);
}

/////////////////////////////////////////////////////////////////
// Draws a horizontal bar to the right.
//
MODULE_EXPORT void
sli_hbar (Driver *drvthis, int x, int y, int len, int promille, int options)
{
	PrivateData *p = drvthis->private_data;

	sli_init_hbar(drvthis);

	lib_hbar_static(drvthis, x, y, len, promille, options, p->cellwidth, 0);
}

/////////////////////////////////////////////////////////////////
// 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...
//
MODULE_EXPORT void
sli_set_char (Driver *drvthis, int n, unsigned char *dat)
{
	PrivateData *p = drvthis->private_data;
	char out[2];
	int row;
	unsigned char mask = (1 << p->cellwidth) - 1;

	/* SLI also has 8 user definable characters */
	if ((n < 0) || (n > 7) || (!dat))
		return;

	/* Move cursor to CGRAM */
	out[0] = 0x0FE;
	out[1] = 0x040 + 8 * n;
	write(p->fd, out, 2);

	for (row = 0; row < p->cellheight; row++) {
		int letter = dat[row] & mask;

		letter |= 0x020;	  /* SLI can't accept CR, LF, etc in this character! */
		write(p->fd, &letter, 1);
	}

	/* Move cursor back to DDRAM */
	out[0] = 0x0FE;
	out[1] = 0x080;
	write(p->fd, out, 2);
}

MODULE_EXPORT int
sli_icon (Driver *drvthis, int x, int y, int icon)
{
	static unsigned char icons[2][8] = {
		{0x1F, 0x15, 0x00, 0x00, 0x00, 0x11, 0x1B, 0x1F},	/* Empty Heart */
		{0x1F, 0x15, 0x0A, 0x0E, 0x0E, 0x15, 0x1B, 0x1F}	/* Filled Heart */
	};

	switch (icon) {
		case ICON_BLOCK_FILLED:
			sli_chr(drvthis, x, y, 255);
			break;
		case ICON_HEART_FILLED:
			sli_set_char( drvthis, 0, icons[1]);
			sli_chr(drvthis, x, y, 0);
			break;
		case ICON_HEART_OPEN:
			sli_set_char( drvthis, 0, icons[0]);
			sli_chr(drvthis, x, y, 0);
			break;
		default:
			return -1;
	}
	return 0;
}