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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [arm/] [edb7xxx/] [v2_0/] [src/] [lcd_support.c] - Blame information for rev 475

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//==========================================================================
2 
//
3 
//        lcd_support.c
4 
//
5 
//        Cirrus Logic EDB7XXX - LCD support routines
6 
//
7 
//==========================================================================
8 
//####ECOSGPLCOPYRIGHTBEGIN####
9 
// -------------------------------------------
10 
// This file is part of eCos, the Embedded Configurable Operating System.
11 
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
12 
//
13 
// eCos is free software; you can redistribute it and/or modify it under
14 
// the terms of the GNU General Public License as published by the Free
15 
// Software Foundation; either version 2 or (at your option) any later version.
16 
//
17 
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
20 
// for more details.
21 
//
22 
// You should have received a copy of the GNU General Public License along
23 
// with eCos; if not, write to the Free Software Foundation, Inc.,
24 
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
25 
//
26 
// As a special exception, if other files instantiate templates or use macros
27 
// or inline functions from this file, or you compile this file and link it
28 
// with other works to produce a work based on this file, this file does not
29 
// by itself cause the resulting work to be covered by the GNU General Public
30 
// License. However the source code for this file must still be made available
31 
// in accordance with section (3) of the GNU General Public License.
32 
//
33 
// This exception does not invalidate any other reasons why a work based on
34 
// this file might be covered by the GNU General Public License.
35 
//
36 
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 
// at http://sources.redhat.com/ecos/ecos-license/
38 
// -------------------------------------------
39 
//####ECOSGPLCOPYRIGHTEND####
40 
//==========================================================================
41 
//#####DESCRIPTIONBEGIN####
42 
//
43 
// Author(s):     gthomas
44 
// Contributors:  gthomas
45 
// Date:          2001-09-29
46 
// Description:   Simple LCD support
47 
//####DESCRIPTIONEND####
48 
 
49 
#include <pkgconf/hal.h>
50 
 
51 
#include <cyg/infra/diag.h>
52 
#include <cyg/hal/hal_io.h>       // IO macros
53 
#include <cyg/hal/hal_if.h>       // Virtual vector support
54 
#include <cyg/hal/hal_arch.h>     // Register state info
55 
#include <cyg/hal/hal_intr.h>     // HAL interrupt macros
56 
 
57 
#include <cyg/hal/hal_edb7xxx.h>  // Board definitions
58 
#include <cyg/hal/lcd_support.h>
59 
#include <cyg/hal/hal_cache.h>
60 
 
61 
#ifdef CYGPKG_ISOINFRA
62 
# include <pkgconf/isoinfra.h>
63 
# ifdef CYGINT_ISO_STDIO_FORMATTED_IO
64 
#  include <stdio.h>  // sscanf
65 
# endif
66 
#endif
67 
 
68 
#ifndef FALSE
69 
#define FALSE 0
70 
#define TRUE  1
71 
#endif
72 
 
73 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO
74 
#include "banner.xpm"
75 
#endif
76 
#include "font.h"
77 
 
78 
// Physical dimensions of LCD display
79 
#define DISPLAY_WIDTH  320
80 
#define DISPLAY_HEIGHT 240
81 
 
82 
// Logical layout
83 
#ifdef CYGSEM_EDB7XXX_LCD_COMM_PORTRAIT_MODE
84 
#define LCD_WIDTH  240
85 
#define LCD_HEIGHT 320
86 
#else
87 
#define LCD_WIDTH  320
88 
#define LCD_HEIGHT 240
89 
#endif
90 
#define LCD_DEPTH   16
91 
 
92 
#define USE_RGB565
93 
#ifdef USE_RGB565
94 
#define RGB_RED(x)   (((x)&0x1F)<<11)
95 
#define RGB_GREEN(x) (((x)&0x3F)<<5)
96 
#define RGB_BLUE(x)  ((x)&0x1F)
97 
#else
98 
#define RGB_RED(x)   (((x)&0x0F)<<12)
99 
#define RGB_GREEN(x) (((x)&0x0F)<<7)
100 
#define RGB_BLUE(x)  (((x)&0x0F)<<1)
101 
#endif
102 
 
103 
// Physical screen info
104 
//static int lcd_depth  = LCD_DEPTH;  // Should be 1, 2, or 4
105 
static int lcd_bpp;
106 
static int lcd_width  = LCD_WIDTH;
107 
static int lcd_height = LCD_HEIGHT;
108 
 
109 
// Virtual screen info
110 
static int curX = 0;  // Last used position
111 
static int curY = 0;
112 
//static int width = LCD_WIDTH / (FONT_WIDTH*NIBBLES_PER_PIXEL);
113 
//static int height = LCD_HEIGHT / (FONT_HEIGHT*SCREEN_SCALE);
114 
 
115 
static int fg = RGB_RED(15) | RGB_GREEN(63) | RGB_BLUE(8);
116 
static int bg = RGB_RED(0) | RGB_GREEN(0) | RGB_BLUE(15/*31*/);
117 
 
118 
#define SCREEN_PAN            20
119 
#define SCREEN_WIDTH          80
120 
#define SCREEN_HEIGHT         (LCD_HEIGHT/FONT_HEIGHT)
121 
#define VISIBLE_SCREEN_WIDTH  (LCD_WIDTH/FONT_WIDTH)
122 
#define VISIBLE_SCREEN_HEIGHT (LCD_HEIGHT/FONT_HEIGHT)
123 
static char screen[SCREEN_HEIGHT][SCREEN_WIDTH];
124 
static int screen_start = 0;
125 
static int screen_height = SCREEN_HEIGHT;
126 
static int screen_width = SCREEN_WIDTH;
127 
static int screen_pan = 0;
128 
 
129 
static bool cursor_enable = true;
130 
 
131 
// Functions
132 
static void lcd_drawc(cyg_int8 c, int x, int y);
133 
 
134 
// Note: val is a 16 bit, RGB565 value which must be mapped
135 
// onto a 12 bit value.
136 
#define RED(v)   ((v>>12) & 0x0F)
137 
#define GREEN(v) ((v>>7) & 0x0F)
138 
#define BLUE(v)  ((v>>1) & 0x0F)
139 
#ifdef CYGSEM_EDB7XXX_LCD_COMM_PORTRAIT_MODE
140 
// Translate coordinates, rotating clockwise 90 degrees
141 
static void
142 
set_pixel(int row, int col, unsigned short val)
143 
{
144 
//    fp->pixels[col][(DISPLAY_WIDTH-1)-row] = val;
145 
    int _row = (240-1) - col;
146 
    int _col = row;
147 
    unsigned char *pxptr = (unsigned char *)(0xC0000000 + (_row * 480) + ((_col * 3) / 2));
148 
 
149 
    if ((row >= LCD_HEIGHT) || (col >= LCD_WIDTH)) return;
150 
    if (0)
151 
    {
152 
        int old = start_console();
153 
        diag_printf("row=%d/%d, col=%d/%d, pxptr = %p\n", row, _row, col, _col, pxptr);
154 
        end_console(old);
155 
    }
156 
    if ((row % 2) == 0) {
157 
        // Even row
158 
        *pxptr++ = RED(val) | (GREEN(val) << 4);
159 
        *pxptr = (*pxptr & 0xF0) | BLUE(val);
160 
    } else {
161 
        // Odd row
162 
        *pxptr = (*pxptr & 0x0F) | (RED(val) << 4);
163 
        *++pxptr = GREEN(val) | (BLUE(val) << 4);
164 
    }
165 
}
166 
#else
167 
static void
168 
set_pixel(int row, int col, unsigned short val)
169 
{
170 
    int vpx = (row * 320) + col;  // Virtual pixel address
171 
    int rem = (vpx * 3) % 2;
172 
    unsigned char *pxptr = (unsigned char *)(0xC0000000 + ((vpx * 3) / 2));
173 
 
174 
    if ((row >= LCD_HEIGHT) || (col >= LCD_WIDTH)) return;
175 
    if (rem) {
176 
        *pxptr = (*pxptr & 0x0F) | (RED(val) << 4);
177 
        *++pxptr = GREEN(val) | (BLUE(val) << 4);
178 
    } else {
179 
        *pxptr++ = RED(val) | (GREEN(val) << 4);
180 
        *pxptr = (*pxptr & 0xF0) | BLUE(val);
181 
    }
182 
}
183 
#endif
184 
 
185 
static int
186 
_hexdigit(char c)
187 
{
188 
    if ((c >= '0') && (c <= '9')) {
189 
        return c - '0';
190 
    } else
191 
    if ((c >= 'A') && (c <= 'F')) {
192 
        return (c - 'A') + 0x0A;
193 
    } else
194 
    if ((c >= 'a') && (c <= 'f')) {
195 
        return (c - 'a') + 0x0a;
196 
    }
197 
}
198 
 
199 
static int
200 
_hex(char *cp)
201 
{
202 
    return (_hexdigit(*cp)<<4) | _hexdigit(*(cp+1));
203 
}
204 
 
205 
static unsigned short
206 
parse_color(char *cp)
207 
{
208 
    int red, green, blue;
209 
 
210 
    while (*cp && (*cp != 'c')) cp++;
211 
    if (cp) {
212 
        cp += 2;
213 
        if (*cp == '#') {
214 
            red = _hex(cp+1);
215 
            green = _hex(cp+3);
216 
            blue = _hex(cp+5);
217 
#ifdef USE_RGB565
218 
            return RGB_RED(red>>3) | RGB_GREEN(green>>2) | RGB_BLUE(blue>>3);
219 
#else
220 
            return RGB_RED(red>>3) | RGB_GREEN(green>>3) | RGB_BLUE(blue>>3);
221 
#endif
222 
        } else {
223 
            // Should be "None"
224 
            return 0xFFFF;
225 
        }
226 
    } else {
227 
        return 0xFFFF;
228 
    }
229 
}
230 
 
231 
#ifndef CYGINT_ISO_STDIO_FORMATTED_IO
232 
static int
233 
get_int(char **_cp)
234 
{
235 
    char *cp = *_cp;
236 
    char c;
237 
    int val = 0;
238 
 
239 
    while ((c = *cp++) && (c != ' ')) {
240 
        if ((c >= '0') && (c <= '9')) {
241 
            val = val * 10 + (c - '0');
242 
        } else {
243 
            return -1;
244 
        }
245 
    }
246 
    *_cp = cp;
247 
    return val;
248 
}
249 
#endif
250 
 
251 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO
252 
int
253 
show_xpm(char *xpm[], int screen_pos)
254 
{
255 
    int i, row, col, offset;
256 
    char *cp;
257 
    int nrows, ncols, nclrs;
258 
    unsigned short colors[256];  // Mapped by character index
259 
 
260 
    cp = xpm[0];
261 
#ifdef CYGINT_ISO_STDIO_FORMATTED_IO
262 
    if (sscanf(cp, "%d %d %d", &ncols, &nrows, &nclrs) != 3) {
263 
#else
264 
    if (((ncols = get_int(&cp)) < 0) ||
265 
        ((nrows = get_int(&cp)) < 0) ||
266 
        ((nclrs = get_int(&cp)) < 0)) {
267 
 
268 
#endif
269 
        diag_printf("Can't parse XPM data, sorry\n");
270 
        return 0;
271 
    }
272 
    // printf("%d rows, %d cols, %d colors\n", nrows, ncols, nclrs);
273 
 
274 
    for (i = 0;  i < 256;  i++) {
275 
        colors[i] = 0x0000;
276 
    }
277 
    for (i = 0;  i < nclrs;  i++) {
278 
        cp = xpm[i+1];
279 
        colors[(unsigned int)*cp] = parse_color(&cp[1]);
280 
        // printf("Color[%c] = %x\n", *cp, colors[(unsigned int)*cp]);
281 
    }
282 
 
283 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO_TOP
284 
    offset = screen_pos;
285 
#else
286 
    offset = screen_pos-nrows;
287 
#endif
288 
    for (row = 0;  row < nrows;  row++) {
289 
        cp = xpm[nclrs+1+row];
290 
        for (col = 0;  col < ncols;  col++) {
291 
            set_pixel(row+offset, col, colors[(unsigned int)*cp++]);
292 
        }
293 
    }
294 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO_TOP
295 
    screen_start = (nrows + (FONT_HEIGHT-1))/FONT_HEIGHT;
296 
    return offset+nrows;
297 
#else
298 
    screen_height = offset / FONT_HEIGHT;
299 
    return offset;
300 
#endif
301 
}
302 
#endif
303 
 
304 
// Control state of LCD display
305 
 
306 
#define LCD_DCDC      0x02
307 
#define LCD_ENABLE    0x04
308 
#define LCD_BACKLIGHT 0x08
309 
#define LCD_INIT (LCD_DCDC|LCD_ENABLE|LCD_BACKLIGHT)
310 
 
311 
void
312 
lcd_on(bool enable)
313 
{
314 
    static bool enabled = true;
315 
 
316 
    if (enable) {
317 
        if (!enabled) {
318 
            *(volatile cyg_uint8 *)PDDR |= (LCD_ENABLE|LCD_BACKLIGHT);
319 
            *(volatile cyg_uint32 *)SYSCON1 |= SYSCON1_LCDEN;
320 
        }
321 
        enabled = true;
322 
    } else {
323 
        if (enabled) {
324 
            *(volatile cyg_uint32 *)SYSCON1 &= ~SYSCON1_LCDEN;
325 
            *(volatile cyg_uint8 *)PDDR &= ~(LCD_ENABLE|LCD_BACKLIGHT);
326 
        }
327 
        enabled = false;
328 
    }
329 
}
330 
 
331 
// Initialize LCD hardware
332 
 
333 
void
334 
lcd_init(int depth)
335 
{
336 
    // Hardwired for EDB7312
337 
    *(volatile cyg_uint32 *)LCDCON = 0xE60F7C1F;
338 
    *(volatile cyg_uint32 *)PALLSW = 0x76543210;
339 
    *(volatile cyg_uint32 *)PALMSW = 0xFEDCBA98;
340 
    *(volatile cyg_uint8 *)PDDR    |= LCD_INIT;  // Enable video + backlight + DC-DC converter
341 
    *(volatile cyg_uint8 *)FRBADDR = 0x0C;  // Highest order nibble of LCD frame address
342 
    *(volatile cyg_uint32 *)PMPCON = 0x800; // 96KHz, 50%
343 
    lcd_on(true);
344 
    lcd_clear();
345 
}
346 
 
347 
// Get information about the frame buffer
348 
int
349 
lcd_getinfo(struct lcd_info *info)
350 
{
351 
#if 0 // this is all wrong
352 
    if (lcd_bpp == 0) {
353 
        return 0;  // LCD not initialized
354 
    }
355 
    info->width = DISPLAY_WIDTH;
356 
    info->height = DISPLAY_HEIGHT;
357 
    info->bpp = lcd_bpp;
358 
    info->fb = 0xC0000000;
359 
    info->rlen = DISPLAY_WIDTH * 2;
360 
    info->type = FB_TRUE_RGB565;
361 
    return 1; // Information valid
362 
#else
363 
    return 0;
364 
#endif
365 
}
366 
 
367 
// Clear screen
368 
void
369 
lcd_clear(void)
370 
{
371 
    int row, col;
372 
    int pos;
373 
 
374 
#ifndef USE_RGB565
375 
    int val;
376 
    for (row = 0;  row < lcd_height;  row++) {
377 
        for (col = 0;  col < lcd_width;  col++) {
378 
            set_pixel(row, col, RGB_RED(31));
379 
        }
380 
    }
381 
    CYGACC_CALL_IF_DELAY_US(10000000);
382 
 
383 
    for (row = 0;  row < lcd_height;  row++) {
384 
        for (col = 0;  col < lcd_width;  col++) {
385 
            set_pixel(row, col, RGB_GREEN(31));
386 
        }
387 
    }
388 
    CYGACC_CALL_IF_DELAY_US(10000000);
389 
    val = 0;
390 
    for (pos = 0;  pos < 16;  pos++) {
391 
        val = (1<<pos);
392 
        diag_printf("Set pixel to 0x%04x\n", val);
393 
        for (row = 0;  row < lcd_height;  row++) {
394 
            for (col = 0;  col < lcd_width;  col++) {
395 
                set_pixel(row, col, val);
396 
            }
397 
        }
398 
        CYGACC_CALL_IF_DELAY_US(100000);
399 
    }
400 
    val = 0;
401 
    for (pos = 8;  pos < 16;  pos++) {
402 
        val |= (1<<pos);
403 
        diag_printf("Set pixel to 0x%04x\n", val);
404 
        for (row = 0;  row < lcd_height;  row++) {
405 
            for (col = 0;  col < lcd_width;  col++) {
406 
                set_pixel(row, col, val);
407 
            }
408 
        }
409 
        CYGACC_CALL_IF_DELAY_US(100000);
410 
    }
411 
 
412 
    for (row = 0;  row < lcd_height;  row++) {
413 
        for (col = 0;  col < lcd_width;  col++) {
414 
            set_pixel(row, col, RGB_BLUE(31));
415 
        }
416 
    }
417 
    CYGACC_CALL_IF_DELAY_US(100000);
418 
#endif // RGB565
419 
 
420 
    for (row = 0;  row < lcd_height;  row++) {
421 
        for (col = 0;  col < lcd_width;  col++) {
422 
            set_pixel(row, col, bg);
423 
        }
424 
    }
425 
    for (row = 0;  row < screen_height;  row++) {
426 
        for (col = 0;  col < screen_width;  col++) {
427 
            screen[row][col] = ' ';
428 
        }
429 
    }
430 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO
431 
    // Note: Row 0 seems to wrap incorrectly
432 
#ifdef CYGOPT_EDB7XXX_LCD_COMM_LOGO_TOP
433 
    pos = 0;
434 
#else
435 
    pos = (LCD_HEIGHT-1);
436 
#endif
437 
    show_xpm(banner_xpm, pos);
438 
#endif // CYGOPT_EDB7XXX_LCD_COMM_LOGO
439 
    curX = 0;  curY = screen_start;
440 
    if (cursor_enable) {
441 
        lcd_drawc(CURSOR_ON, curX-screen_pan, curY);
442 
    }
443 
}
444 
 
445 
// Position cursor
446 
void
447 
lcd_moveto(int X, int Y)
448 
{
449 
    if (cursor_enable) {
450 
        lcd_drawc(screen[curY][curX], curX-screen_pan, curY);
451 
    }
452 
    if (X < 0) X = 0;
453 
    if (X >= screen_width) X = screen_width-1;
454 
    curX = X;
455 
    if (Y < screen_start) Y = screen_start;
456 
    if (Y >= screen_height) Y = screen_height-1;
457 
    curY = Y;
458 
    if (cursor_enable) {
459 
        lcd_drawc(CURSOR_ON, curX-screen_pan, curY);
460 
    }
461 
}
462 
 
463 
// Render a character at position (X,Y) with current background/foreground
464 
static void
465 
lcd_drawc(cyg_int8 c, int x, int y)
466 
{
467 
    cyg_uint8 bits;
468 
    int l, p;
469 
 
470 
    if ((x < 0) || (x >= VISIBLE_SCREEN_WIDTH) ||
471 
        (y < 0) || (y >= screen_height)) return;
472 
    for (l = 0;  l < FONT_HEIGHT;  l++) {
473 
        bits = font_table[c-FIRST_CHAR][l];
474 
        for (p = 0;  p < FONT_WIDTH;  p++) {
475 
            if (bits & 0x01) {
476 
                set_pixel(y*FONT_HEIGHT+l, x*FONT_WIDTH + p, fg);
477 
            } else {
478 
                set_pixel(y*FONT_HEIGHT+l, x*FONT_WIDTH + p, bg);
479 
            }
480 
            bits >>= 1;
481 
        }
482 
    }
483 
}
484 
 
485 
static void
486 
lcd_refresh(void)
487 
{
488 
    int row, col;
489 
 
490 
    for (row = screen_start;  row < screen_height;  row++) {
491 
        for (col = 0;  col < VISIBLE_SCREEN_WIDTH;  col++) {
492 
            if ((col+screen_pan) < screen_width) {
493 
                lcd_drawc(screen[row][col+screen_pan], col, row);
494 
            } else {
495 
                lcd_drawc(' ', col, row);
496 
            }
497 
        }
498 
    }
499 
    if (cursor_enable) {
500 
        lcd_drawc(CURSOR_ON, curX-screen_pan, curY);
501 
    }
502 
}
503 
 
504 
static void
505 
lcd_scroll(void)
506 
{
507 
    int row, col;
508 
    cyg_uint8 *c1, *c2;
509 
 
510 
    // First scroll up the virtual screen
511 
    for (row = (screen_start+1);  row < screen_height;  row++) {
512 
        c1 = &screen[row-1][0];
513 
        c2 = &screen[row][0];
514 
        for (col = 0;  col < screen_width;  col++) {
515 
            *c1++ = *c2++;
516 
        }
517 
    }
518 
    c1 = &screen[screen_height-1][0];
519 
    for (col = 0;  col < screen_width;  col++) {
520 
        *c1++ = 0x20;
521 
    }
522 
    lcd_refresh();
523 
}
524 
 
525 
// Draw one character at the current position
526 
void
527 
lcd_putc(cyg_int8 c)
528 
{
529 
    if (cursor_enable) {
530 
        lcd_drawc(screen[curY][curX], curX-screen_pan, curY);
531 
    }
532 
    switch (c) {
533 
    case '\r':
534 
        curX = 0;
535 
        break;
536 
    case '\n':
537 
        curY++;
538 
        break;
539 
    case '\b':
540 
        curX--;
541 
        if (curX < 0) {
542 
            curY--;
543 
            if (curY < 0) curY = 0;
544 
            curX = screen_width-1;
545 
        }
546 
        break;
547 
    default:
548 
        if (((cyg_uint8)c < FIRST_CHAR) || ((cyg_uint8)c > LAST_CHAR)) c = '.';
549 
        screen[curY][curX] = c;
550 
        lcd_drawc(c, curX-screen_pan, curY);
551 
        curX++;
552 
        if (curX == screen_width) {
553 
            curY++;
554 
            curX = 0;
555 
        }
556 
    }
557 
    if (curY >= screen_height) {
558 
        lcd_scroll();
559 
        curY = (screen_height-1);
560 
    }
561 
    if (cursor_enable) {
562 
        lcd_drawc(CURSOR_ON, curX-screen_pan, curY);
563 
    }
564 
}
565 
 
566 
// Basic LCD 'printf()' support
567 
 
568 
#include <stdarg.h>
569 
 
570 
#define is_digit(c) ((c >= '0') && (c <= '9'))
571 
 
572 
static int
573 
_cvt(unsigned long val, char *buf, long radix, char *digits)
574 
{
575 
    char temp[80];
576 
    char *cp = temp;
577 
    int length = 0;
578 
    if (val == 0) {
579 
        /* Special case */
580 
        *cp++ = '0';
581 
    } else {
582 
        while (val) {
583 
            *cp++ = digits[val % radix];
584 
            val /= radix;
585 
        }
586 
    }
587 
    while (cp != temp) {
588 
        *buf++ = *--cp;
589 
        length++;
590 
    }
591 
    *buf = '\0';
592 
    return (length);
593 
}
594 
 
595 
static int
596 
lcd_vprintf(void (*putc)(cyg_int8), const char *fmt0, va_list ap)
597 
{
598 
    char c, sign, *cp;
599 
    int left_prec, right_prec, zero_fill, length, pad, pad_on_right;
600 
    char buf[32];
601 
    long val;
602 
    while ((c = *fmt0++)) {
603 
        cp = buf;
604 
        length = 0;
605 
        if (c == '%') {
606 
            c = *fmt0++;
607 
            left_prec = right_prec = pad_on_right = 0;
608 
            if (c == '-') {
609 
                c = *fmt0++;
610 
                pad_on_right++;
611 
            }
612 
            if (c == '0') {
613 
                zero_fill = TRUE;
614 
                c = *fmt0++;
615 
            } else {
616 
                zero_fill = FALSE;
617 
            }
618 
            while (is_digit(c)) {
619 
                left_prec = (left_prec * 10) + (c - '0');
620 
                c = *fmt0++;
621 
            }
622 
            if (c == '.') {
623 
                c = *fmt0++;
624 
                zero_fill++;
625 
                while (is_digit(c)) {
626 
                    right_prec = (right_prec * 10) + (c - '0');
627 
                    c = *fmt0++;
628 
                }
629 
            } else {
630 
                right_prec = left_prec;
631 
            }
632 
            sign = '\0';
633 
            switch (c) {
634 
            case 'd':
635 
            case 'x':
636 
            case 'X':
637 
                val = va_arg(ap, long);
638 
                switch (c) {
639 
                case 'd':
640 
                    if (val < 0) {
641 
                        sign = '-';
642 
                        val = -val;
643 
                    }
644 
                    length = _cvt(val, buf, 10, "0123456789");
645 
                    break;
646 
                case 'x':
647 
                    length = _cvt(val, buf, 16, "0123456789abcdef");
648 
                    break;
649 
                case 'X':
650 
                    length = _cvt(val, buf, 16, "0123456789ABCDEF");
651 
                    break;
652 
                }
653 
                break;
654 
            case 's':
655 
                cp = va_arg(ap, char *);
656 
                length = strlen(cp);
657 
                break;
658 
            case 'c':
659 
                c = va_arg(ap, long /*char*/);
660 
                (*putc)(c);
661 
                continue;
662 
            default:
663 
                (*putc)('?');
664 
            }
665 
            pad = left_prec - length;
666 
            if (sign != '\0') {
667 
                pad--;
668 
            }
669 
            if (zero_fill) {
670 
                c = '0';
671 
                if (sign != '\0') {
672 
                    (*putc)(sign);
673 
                    sign = '\0';
674 
                }
675 
            } else {
676 
                c = ' ';
677 
            }
678 
            if (!pad_on_right) {
679 
                while (pad-- > 0) {
680 
                    (*putc)(c);
681 
                }
682 
            }
683 
            if (sign != '\0') {
684 
                (*putc)(sign);
685 
            }
686 
            while (length-- > 0) {
687 
                (*putc)(c = *cp++);
688 
                if (c == '\n') {
689 
                    (*putc)('\r');
690 
                }
691 
            }
692 
            if (pad_on_right) {
693 
                while (pad-- > 0) {
694 
                    (*putc)(' ');
695 
                }
696 
            }
697 
        } else {
698 
            (*putc)(c);
699 
            if (c == '\n') {
700 
                (*putc)('\r');
701 
            }
702 
        }
703 
    }
704 
}
705 
 
706 
int
707 
_lcd_printf(char const *fmt, ...)
708 
{
709 
    int ret;
710 
    va_list ap;
711 
 
712 
    va_start(ap, fmt);
713 
    ret = lcd_vprintf(lcd_putc, fmt, ap);
714 
    va_end(ap);
715 
    return (ret);
716 
}
717 
 
718 
void
719 
lcd_setbg(int red, int green, int blue)
720 
{
721 
    bg = RGB_RED(red) | RGB_GREEN(green) | RGB_BLUE(blue);
722 
}
723 
 
724 
void
725 
lcd_setfg(int red, int green, int blue)
726 
{
727 
    fg = RGB_RED(red) | RGB_GREEN(green) | RGB_BLUE(blue);
728 
}
729 
 
730 
#ifdef CYGSEM_EDB7XXX_LCD_COMM
731 
 
732 
//
733 
// Support LCD/keyboard (PS2) as a virtual I/O channel
734 
//   Adapted from i386/pcmb_screen.c
735 
//
736 
 
737 
static int  _timeout = 500;
738 
 
739 
//-----------------------------------------------------------------------------
740 
// Keyboard definitions
741 
 
742 
#define KBDATAPORT      0x40010000              // data I/O port
743 
#define KBCMDPORT       0x40010001              // command port (write)
744 
#define KBSTATPORT      0x40010001              // status port  (read)
745 
#define KBINRDY         0x01
746 
#define KBOUTRDY        0x02
747 
#define KBTXTO          0x40                    // Transmit timeout - nothing there
748 
#define KBTEST          0xAB
749 
 
750 
// Scan codes
751 
 
752 
#define LSHIFT          0x2a
753 
#define RSHIFT          0x36
754 
#define CTRL            0x1d
755 
#define ALT             0x38
756 
#define CAPS            0x3a
757 
#define NUMS            0x45
758 
 
759 
#define BREAK           0x80
760 
 
761 
// Bits for KBFlags
762 
 
763 
#define KBNormal        0x0000
764 
#define KBShift         0x0001
765 
#define KBCtrl          0x0002
766 
#define KBAlt           0x0004
767 
#define KBIndex         0x0007  // mask for the above
768 
 
769 
#define KBExtend        0x0010
770 
#define KBAck           0x0020
771 
#define KBResend        0x0040
772 
#define KBShiftL        (0x0080 | KBShift)
773 
#define KBShiftR        (0x0100 | KBShift)
774 
#define KBCtrlL         (0x0200 | KBCtrl)
775 
#define KBCtrlR         (0x0400 | KBCtrl)
776 
#define KBAltL          (0x0800 | KBAlt)
777 
#define KBAltR          (0x1000 | KBAlt)
778 
#define KBCapsLock      0x2000
779 
#define KBNumLock       0x4000
780 
 
781 
#define KBArrowUp       0x48
782 
#define KBArrowRight    0x4D
783 
#define KBArrowLeft     0x4B
784 
#define KBArrowDown     0x50
785 
 
786 
//-----------------------------------------------------------------------------
787 
// Keyboard Variables
788 
 
789 
static  int     KBFlags = 0;
790 
 
791 
static  CYG_BYTE        KBPending = 0xFF;
792 
 
793 
static  CYG_BYTE        KBScanTable[128][4] = {
794 
//      Normal          Shift           Control         Alt
795 
// 0x00
796 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
797 
    {   0x1b,           0x1b,           0x1b,           0xFF,   },
798 
    {   '1',            '!',            0xFF,           0xFF,   },
799 
    {   '2',            '"',            0xFF,           0xFF,   },
800 
    {   '3',            '#',            0xFF,           0xFF,   },
801 
    {   '4',            '$',            0xFF,           0xFF,   },
802 
    {   '5',            '%',            0xFF,           0xFF,   },
803 
    {   '6',            '^',            0xFF,           0xFF,   },
804 
    {   '7',            '&',            0xFF,           0xFF,   },
805 
    {   '8',            '*',            0xFF,           0xFF,   },
806 
    {   '9',            '(',            0xFF,           0xFF,   },
807 
    {   '0',            ')',            0xFF,           0xFF,   },
808 
    {   '-',            '_',            0xFF,           0xFF,   },
809 
    {   '=',            '+',            0xFF,           0xFF,   },
810 
    {   '\b',           '\b',           0xFF,           0xFF,   },
811 
    {   '\t',           '\t',           0xFF,           0xFF,   },
812 
// 0x10
813 
    {   'q',            'Q',            0x11,           0xFF,   },
814 
    {   'w',            'W',            0x17,           0xFF,   },
815 
    {   'e',            'E',            0x05,           0xFF,   },
816 
    {   'r',            'R',            0x12,           0xFF,   },
817 
    {   't',            'T',            0x14,           0xFF,   },
818 
    {   'y',            'Y',            0x19,           0xFF,   },
819 
    {   'u',            'U',            0x15,           0xFF,   },
820 
    {   'i',            'I',            0x09,           0xFF,   },
821 
    {   'o',            'O',            0x0F,           0xFF,   },
822 
    {   'p',            'P',            0x10,           0xFF,   },
823 
    {   '[',            '{',            0x1b,           0xFF,   },
824 
    {   ']',            '}',            0x1d,           0xFF,   },
825 
    {   '\r',           '\r',           '\n',           0xFF,   },
826 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
827 
    {   'a',            'A',            0x01,           0xFF,   },
828 
    {   's',            'S',            0x13,           0xFF,   },
829 
// 0x20
830 
    {   'd',            'D',            0x04,           0xFF,   },
831 
    {   'f',            'F',            0x06,           0xFF,   },
832 
    {   'g',            'G',            0x07,           0xFF,   },
833 
    {   'h',            'H',            0x08,           0xFF,   },
834 
    {   'j',            'J',            0x0a,           0xFF,   },
835 
    {   'k',            'K',            0x0b,           0xFF,   },
836 
    {   'l',            'L',            0x0c,           0xFF,   },
837 
    {   ';',            ':',            0xFF,           0xFF,   },
838 
    {   0x27,           '@',            0xFF,           0xFF,   },
839 
    {   '#',            '~',            0xFF,           0xFF,   },
840 
    {   '`',            '~',            0xFF,           0xFF,   },
841 
    {   '\\',           '|',            0x1C,           0xFF,   },
842 
    {   'z',            'Z',            0x1A,           0xFF,   },
843 
    {   'x',            'X',            0x18,           0xFF,   },
844 
    {   'c',            'C',            0x03,           0xFF,   },
845 
    {   'v',            'V',            0x16,           0xFF,   },
846 
// 0x30
847 
    {   'b',            'B',            0x02,           0xFF,   },
848 
    {   'n',            'N',            0x0E,           0xFF,   },
849 
    {   'm',            'M',            0x0D,           0xFF,   },
850 
    {   ',',            '<',            0xFF,           0xFF,   },
851 
    {   '.',            '>',            0xFF,           0xFF,   },
852 
    {   '/',            '?',            0xFF,           0xFF,   },
853 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
854 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
855 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
856 
    {   ' ',            ' ',            ' ',            ' ',    },
857 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
858 
    {   0xF1,           0xE1,           0xFF,           0xFF,   },
859 
    {   0xF2,           0xE2,           0xFF,           0xFF,   },
860 
    {   0xF3,           0xE3,           0xFF,           0xFF,   },
861 
    {   0xF4,           0xE4,           0xFF,           0xFF,   },
862 
    {   0xF5,           0xE5,           0xFF,           0xFF,   },
863 
// 0x40
864 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
865 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
866 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
867 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
868 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
869 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
870 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
871 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
872 
 
873 
    {   0x15,           0x15,           0x15,           0x15,   },
874 
    {   0x10,           0x10,           0x10,           0x10,   },
875 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
876 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
877 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
878 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
879 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
880 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
881 
// 0x50
882 
    {   0x04,           0x04,           0x04,           0x04,   },
883 
    {   0x0e,           0x0e,           0x0e,           0x0e,   },
884 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
885 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
886 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
887 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
888 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
889 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
890 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
891 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
892 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
893 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
894 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
895 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
896 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
897 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
898 
// 0x60
899 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
900 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
901 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
902 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
903 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
904 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
905 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
906 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
907 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
908 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
909 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
910 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
911 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
912 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
913 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
914 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
915 
// 0x70
916 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
917 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
918 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
919 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
920 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
921 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
922 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
923 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
924 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
925 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
926 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
927 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
928 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
929 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
930 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
931 
    {   0xFF,           0xFF,           0xFF,           0xFF,   },
932 
};
933 
 
934 
static int KBIndexTab[8] = { 0, 1, 2, 2, 3, 3, 3, 3 };
935 
 
936 
//-----------------------------------------------------------------------------
937 
 
938 
static __inline__ cyg_uint8
939 
inb(cyg_uint32 port)
940 
{
941 
    cyg_uint8 val;
942 
    HAL_READ_UINT8(port, val);
943 
    return val;
944 
}
945 
 
946 
static __inline__
947 
outb(cyg_uint32 port, cyg_uint8 val)
948 
{
949 
    HAL_WRITE_UINT8(port, val);
950 
}
951 
 
952 
static cyg_bool
953 
KeyboardInit(void)
954 
{
955 
    unsigned char c, s;
956 
    int i;
957 
 
958 
    /* flush input queue */
959 
    while ((inb(KBSTATPORT) & KBINRDY)) {
960 
        (void)inb(KBDATAPORT);
961 
    }
962 
 
963 
    /* Send self-test - controller local */
964 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
965 
    outb(KBCMDPORT,0xAA);
966 
    while ((inb(KBSTATPORT) & KBINRDY) == 0) ; /* wait input ready */
967 
    if ((c = inb(KBDATAPORT)) != 0x55) {
968 
#ifdef DEBUG_KBD_INIT
969 
        diag_printf("Keyboard self test failed - result: %x\n", c);
970 
#endif
971 
        return false;
972 
    }
973 
 
974 
    /* Enable interrupts and keyboard controller */
975 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
976 
    outb(KBCMDPORT,0x60);
977 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
978 
    outb(KBCMDPORT,0x45);
979 
    CYGACC_CALL_IF_DELAY_US(10000);  // 10ms
980 
 
981 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
982 
    outb(KBCMDPORT,0xAE);  // Enable keyboard
983 
 
984 
    /* See if a keyboard is connected */
985 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
986 
    outb(KBDATAPORT,0xFF);
987 
    while (((s = inb(KBSTATPORT)) & (KBINRDY|KBTXTO)) == 0) ; /* wait input ready */
988 
    if ((s & KBTXTO) || ((c = inb(KBDATAPORT)) != 0xFA)) {
989 
#ifdef DEBUG_KBD_INIT
990 
        diag_printf("Keyboard reset failed - no ACK: %x, stat: %x\n", c, s);
991 
#endif
992 
        return false;
993 
    }
994 
    while (((s = inb(KBSTATPORT)) & KBINRDY) == 0) ; /* wait input ready */
995 
    if ((s & KBTXTO) || ((c = inb(KBDATAPORT)) != 0xAA)) {
996 
#ifdef DEBUG_KBD_INIT
997 
        diag_printf("Keyboard reset failed - bad code: %x, stat: %x\n", c, s);
998 
#endif
999 
        return false;
1000 
    }
1001 
 
1002 
    // Set scan mode
1003 
    while (inb(KBSTATPORT) & KBOUTRDY) ;
1004 
    outb(KBCMDPORT,0x20);
1005 
    while ((inb(KBSTATPORT) & KBINRDY) == 0) ; /* wait input ready */
1006 
    if (! (inb(KBDATAPORT) & 0x40)) {
1007 
        /*
1008 
         * Quote from PS/2 System Reference Manual:
1009 
         *
1010 
         * "Address hex 0060 and address hex 0064 should be
1011 
         * written only when the input-buffer-full bit and
1012 
         * output-buffer-full bit in the Controller Status
1013 
         * register are set 0." (KBINRDY and KBOUTRDY)
1014 
         */
1015 
 
1016 
        while (inb(KBSTATPORT) & (KBINRDY | KBOUTRDY)) ;
1017 
        outb(KBDATAPORT,0xF0);
1018 
        while (inb(KBSTATPORT) & (KBINRDY | KBOUTRDY)) ;
1019 
        outb(KBDATAPORT,0x01);
1020 
    }
1021 
 
1022 
    KBFlags = 0;
1023 
    return true;
1024 
} /* KeyboardInit */
1025 
 
1026 
//-----------------------------------------------------------------------------
1027 
 
1028 
static CYG_BYTE
1029 
KeyboardAscii(CYG_BYTE scancode)
1030 
{
1031 
    CYG_BYTE ascii = 0xFF;
1032 
 
1033 
    // Start by handling all shift/ctl keys:
1034 
 
1035 
    switch( scancode ) {
1036 
    case 0xe0:
1037 
        KBFlags |= KBExtend;
1038 
        return 0xFF;
1039 
 
1040 
    case 0xfa:
1041 
        KBFlags |= KBAck;
1042 
        return 0xFF;
1043 
 
1044 
    case 0xfe:
1045 
        KBFlags |= KBResend;
1046 
        return 0xFF;
1047 
 
1048 
    case LSHIFT:
1049 
        KBFlags |= KBShiftL;
1050 
        return 0xFF;
1051 
 
1052 
    case LSHIFT | BREAK:
1053 
        KBFlags &= ~KBShiftL;
1054 
        return 0xFF;
1055 
 
1056 
    case RSHIFT:
1057 
        KBFlags |= KBShiftR;
1058 
        return 0xFF;
1059 
 
1060 
    case RSHIFT | BREAK:
1061 
        KBFlags &= ~KBShiftR;
1062 
        return 0xFF;
1063 
 
1064 
    case CTRL:
1065 
        if( KBFlags & KBExtend )
1066 
        {
1067 
            KBFlags |= KBCtrlR;
1068 
            KBFlags &= ~KBExtend;
1069 
        }
1070 
        else    KBFlags |= KBCtrlL;
1071 
        return 0xFF;
1072 
 
1073 
    case CTRL | BREAK:
1074 
        if( KBFlags & KBExtend )
1075 
        {
1076 
            KBFlags &= ~KBCtrlR;
1077 
            KBFlags &= ~KBExtend;
1078 
        }
1079 
        else    KBFlags &= ~KBCtrlL;
1080 
        return 0xFF;
1081 
 
1082 
 
1083 
    case ALT:
1084 
        if( KBFlags & KBExtend )
1085 
        {
1086 
            KBFlags |= KBAltR;
1087 
            KBFlags &= ~KBExtend;
1088 
        }
1089 
        else    KBFlags |= KBAltL;
1090 
        return 0xFF;
1091 
 
1092 
    case ALT | BREAK:
1093 
        if( KBFlags & KBExtend )
1094 
        {
1095 
            KBFlags &= ~KBAltR;
1096 
            KBFlags &= ~KBExtend;
1097 
        }
1098 
        else    KBFlags &= ~KBAltL;
1099 
        return 0xFF;
1100 
 
1101 
    case CAPS:
1102 
        KBFlags ^= KBCapsLock;
1103 
    case CAPS | BREAK:
1104 
        return 0xFF;
1105 
 
1106 
    case NUMS:
1107 
        KBFlags ^= KBNumLock;
1108 
    case NUMS | BREAK:
1109 
        return 0xFF;
1110 
 
1111 
    case KBArrowUp:
1112 
    case KBArrowDown:
1113 
        screen_pan = 0;
1114 
        lcd_refresh();
1115 
        break;
1116 
    case KBArrowLeft:
1117 
        screen_pan -= SCREEN_PAN;
1118 
        if (screen_pan < 0) screen_pan = 0;
1119 
        lcd_refresh();
1120 
        break;
1121 
    case KBArrowRight:
1122 
        screen_pan += SCREEN_PAN;
1123 
        if (screen_pan > (SCREEN_WIDTH-SCREEN_PAN)) screen_pan = SCREEN_WIDTH-SCREEN_PAN;
1124 
        lcd_refresh();
1125 
        break;
1126 
 
1127 
    }
1128 
 
1129 
    // Clear Extend flag if set
1130 
    KBFlags &= ~KBExtend;
1131 
 
1132 
    // Ignore all other BREAK codes
1133 
    if( scancode & 0x80 ) return 0xFF;
1134 
 
1135 
    // Here the scancode is for something we can turn
1136 
    // into an ASCII value
1137 
 
1138 
    ascii = KBScanTable[scancode & 0x7F][KBIndexTab[KBFlags & KBIndex]];
1139 
 
1140 
    return ascii;
1141 
 
1142 
} /* KeyboardAscii */
1143 
 
1144 
//-----------------------------------------------------------------------------
1145 
 
1146 
static int
1147 
KeyboardTest(void)
1148 
{
1149 
    // If there is a pending character, return True
1150 
    if( KBPending != 0xFF ) return true;
1151 
 
1152 
    // If there is something waiting at the port, get it
1153 
    for(;;) {
1154 
        CYG_BYTE stat, code;
1155 
        CYG_BYTE c;
1156 
 
1157 
        HAL_READ_UINT8( KBSTATPORT, stat );
1158 
 
1159 
        if( (stat & KBINRDY) == 0 )
1160 
            break;
1161 
 
1162 
        HAL_READ_UINT8( KBDATAPORT, code );
1163 
 
1164 
        // Translate to ASCII
1165 
        c = KeyboardAscii(code);
1166 
 
1167 
        // if it is a real ASCII char, save it and
1168 
        // return True.
1169 
        if( c != 0xFF ) {
1170 
            KBPending = c;
1171 
            return true;
1172 
        }
1173 
    }
1174 
 
1175 
    // Otherwise return False
1176 
    return false;
1177 
 
1178 
} /* KeyboardTest */
1179 
 
1180 
static cyg_bool
1181 
lcd_comm_getc_nonblock(void* __ch_data, cyg_uint8* ch)
1182 
{
1183 
    if( !KeyboardTest() )
1184 
        return false;
1185 
    *ch = KBPending;
1186 
    KBPending = 0xFF;
1187 
    return true;
1188 
}
1189 
 
1190 
static cyg_uint8
1191 
lcd_comm_getc(void* __ch_data)
1192 
{
1193 
    cyg_uint8 ch;
1194 
 
1195 
    while (!lcd_comm_getc_nonblock(__ch_data, &ch)) ;
1196 
    return ch;
1197 
}
1198 
 
1199 
static void
1200 
lcd_comm_putc(void* __ch_data, cyg_uint8 c)
1201 
{
1202 
    lcd_putc(c);
1203 
}
1204 
 
1205 
static void
1206 
lcd_comm_write(void* __ch_data, const cyg_uint8* __buf, cyg_uint32 __len)
1207 
{
1208 
#if 0
1209 
    CYGARC_HAL_SAVE_GP();
1210 
 
1211 
    while(__len-- > 0)
1212 
        lcd_comm_putc(__ch_data, *__buf++);
1213 
 
1214 
    CYGARC_HAL_RESTORE_GP();
1215 
#endif
1216 
}
1217 
 
1218 
static void
1219 
lcd_comm_read(void* __ch_data, cyg_uint8* __buf, cyg_uint32 __len)
1220 
{
1221 
#if 0
1222 
    CYGARC_HAL_SAVE_GP();
1223 
 
1224 
    while(__len-- > 0)
1225 
        *__buf++ = lcd_comm_getc(__ch_data);
1226 
 
1227 
    CYGARC_HAL_RESTORE_GP();
1228 
#endif
1229 
}
1230 
 
1231 
static cyg_bool
1232 
lcd_comm_getc_timeout(void* __ch_data, cyg_uint8* ch)
1233 
{
1234 
    int delay_count;
1235 
    cyg_bool res;
1236 
 
1237 
    delay_count = _timeout * 10; // delay in .1 ms steps
1238 
    for(;;) {
1239 
        res = lcd_comm_getc_nonblock(__ch_data, ch);
1240 
        if (res || 0 == delay_count--)
1241 
            break;
1242 
        CYGACC_CALL_IF_DELAY_US(100);
1243 
    }
1244 
    return res;
1245 
}
1246 
 
1247 
static int
1248 
lcd_comm_control(void *__ch_data, __comm_control_cmd_t __func, ...)
1249 
{
1250 
    static int vector = 0;
1251 
    int ret = -1;
1252 
    static int irq_state = 0;
1253 
 
1254 
    CYGARC_HAL_SAVE_GP();
1255 
 
1256 
    switch (__func) {
1257 
    case __COMMCTL_IRQ_ENABLE:
1258 
        ret = irq_state;
1259 
        irq_state = 1;
1260 
        break;
1261 
    case __COMMCTL_IRQ_DISABLE:
1262 
        ret = irq_state;
1263 
        irq_state = 0;
1264 
        break;
1265 
    case __COMMCTL_DBG_ISR_VECTOR:
1266 
        ret = vector;
1267 
        break;
1268 
    case __COMMCTL_SET_TIMEOUT:
1269 
    {
1270 
        va_list ap;
1271 
 
1272 
        va_start(ap, __func);
1273 
 
1274 
        ret = _timeout;
1275 
        _timeout = va_arg(ap, cyg_uint32);
1276 
 
1277 
        va_end(ap);
1278 
        break;
1279 
    }
1280 
    case __COMMCTL_FLUSH_OUTPUT:
1281 
        ret = 0;
1282 
        break;
1283 
    default:
1284 
        break;
1285 
    }
1286 
    CYGARC_HAL_RESTORE_GP();
1287 
    return ret;
1288 
}
1289 
 
1290 
static int
1291 
lcd_comm_isr(void *__ch_data, int* __ctrlc,
1292 
           CYG_ADDRWORD __vector, CYG_ADDRWORD __data)
1293 
{
1294 
#if 0
1295 
    char ch;
1296 
 
1297 
    cyg_drv_interrupt_acknowledge(__vector);
1298 
    *__ctrlc = 0;
1299 
    if (lcd_comm_getc_nonblock(__ch_data, &ch)) {
1300 
        if (ch == 0x03) {
1301 
            *__ctrlc = 1;
1302 
        }
1303 
    }
1304 
    return CYG_ISR_HANDLED;
1305 
#endif
1306 
}
1307 
 
1308 
#define LCD_COMM_CHANNEL 2
1309 
 
1310 
void
1311 
lcd_comm_init(void)
1312 
{
1313 
    static int init = 0;
1314 
 
1315 
    if (!init) {
1316 
        hal_virtual_comm_table_t* comm;
1317 
        int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
1318 
 
1319 
        init = 1;
1320 
        lcd_on(false);
1321 
        if (!KeyboardInit()) {
1322 
            // No keyboard - no LCD display
1323 
            return;
1324 
        }
1325 
        // Initialize screen
1326 
        cursor_enable = true;
1327 
        lcd_init(16);
1328 
 
1329 
        // Setup procs in the vector table
1330 
        CYGACC_CALL_IF_SET_CONSOLE_COMM(LCD_COMM_CHANNEL);
1331 
        comm = CYGACC_CALL_IF_CONSOLE_PROCS();
1332 
        //CYGACC_COMM_IF_CH_DATA_SET(*comm, chan);
1333 
        CYGACC_COMM_IF_WRITE_SET(*comm, lcd_comm_write);
1334 
        CYGACC_COMM_IF_READ_SET(*comm, lcd_comm_read);
1335 
        CYGACC_COMM_IF_PUTC_SET(*comm, lcd_comm_putc);
1336 
        CYGACC_COMM_IF_GETC_SET(*comm, lcd_comm_getc);
1337 
        CYGACC_COMM_IF_CONTROL_SET(*comm, lcd_comm_control);
1338 
        CYGACC_COMM_IF_DBG_ISR_SET(*comm, lcd_comm_isr);
1339 
        CYGACC_COMM_IF_GETC_TIMEOUT_SET(*comm, lcd_comm_getc_timeout);
1340 
 
1341 
        // Restore original console
1342 
        CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
1343 
    }
1344 
}
1345 
 
1346 
#ifdef CYGPKG_REDBOOT
1347 
#include <redboot.h>
1348 
 
1349 
// Get here when RedBoot is idle.  If it's been long enough, then
1350 
// dim the LCD.  The problem is - how to determine other activities
1351 
// so that this doesn't get in the way.  In the default case, this will
1352 
// be called from RedBoot every 10ms (CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT)
1353 
 
1354 
#define MAX_IDLE_TIME (30*100)
1355 
 
1356 
static void
1357 
idle(bool is_idle)
1358 
{
1359 
    static int idle_time = 0;
1360 
    static bool was_idled = false;
1361 
    int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
1362 
 
1363 
    if (is_idle) {
1364 
        if (!was_idled) {
1365 
            if (++idle_time == MAX_IDLE_TIME) {
1366 
                was_idled = true;
1367 
                lcd_on(false);
1368 
            }
1369 
        }
1370 
    } else {
1371 
        idle_time = 0;
1372 
        if (was_idled) {
1373 
            was_idled = false;
1374 
            lcd_on(cur == LCD_COMM_CHANNEL);
1375 
        }
1376 
    }
1377 
}
1378 
 
1379 
RedBoot_idle(idle, RedBoot_AFTER_NETIO);
1380 
#endif
1381 
#endif

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