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rockbox/firmware/drivers/lcd.c
Markus Braun eef970428b added functions to get the current margins 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1821 a1c6a512-1295-4272-9138-f99709370657
2002-08-20 19:33:55 +00:00

1390 lines
34 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "lcd.h"
#include "kernel.h"
#include "thread.h"
#include <string.h>
#include <stdlib.h>
#include "file.h"
#include "debug.h"
#include "system.h"
#ifdef LOADABLE_FONTS
#include "ajf.h"
#include "panic.h"
#endif
/*** definitions ***/
#define LCDR (PBDR_ADDR+1)
#ifdef HAVE_LCD_CHARCELLS
#define LCD_DS 1 // PB0 = 1 --- 0001 --- LCD-DS
#define LCD_CS 2 // PB1 = 1 --- 0010 --- /LCD-CS
#define LCD_SD 4 // PB2 = 1 --- 0100 --- LCD-SD
#define LCD_SC 8 // PB3 = 1 --- 1000 --- LCD-SC
#ifdef HAVE_NEW_CHARCELL_LCD
# define LCD_CONTRAST_SET ((char)0x50)
# define LCD_CRAM ((char)0x80) /* Characters */
# define LCD_PRAM ((char)0xC0) /* Patterns */
# define LCD_IRAM ((char)0x40) /* Icons */
#else
# define LCD_CONTRAST_SET ((char)0xA8)
# define LCD_CRAM ((char)0xB0) /* Characters */
# define LCD_PRAM ((char)0x80) /* Patterns */
# define LCD_IRAM ((char)0xE0) /* Icons */
#endif
#define LCD_CURSOR(x,y) ((char)(LCD_CRAM+((y)*16+(x))))
#define LCD_ICON(i) ((char)(LCD_IRAM+i))
#elif HAVE_LCD_BITMAP
#define LCD_SD 1 // PB0 = 1 --- 0001
#define LCD_SC 2 // PB1 = 1 --- 0010
#define LCD_RS 4 // PB2 = 1 --- 0100
#define LCD_CS 8 // PB3 = 1 --- 1000
#define LCD_DS LCD_RS
#define LCD_SET_LOWER_COLUMN_ADDRESS ((char)0x00)
#define LCD_SET_HIGHER_COLUMN_ADDRESS ((char)0x10)
#define LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO ((char)0x20)
#define LCD_SET_POWER_CONTROL_REGISTER ((char)0x28)
#define LCD_SET_DISPLAY_START_LINE ((char)0x40)
#define LCD_SET_CONTRAST_CONTROL_REGISTER ((char)0x81)
#define LCD_SET_SEGMENT_REMAP ((char)0xA0)
#define LCD_SET_LCD_BIAS ((char)0xA2)
#define LCD_SET_ENTIRE_DISPLAY_OFF ((char)0xA4)
#define LCD_SET_ENTIRE_DISPLAY_ON ((char)0xA5)
#define LCD_SET_NORMAL_DISPLAY ((char)0xA6)
#define LCD_SET_REVERSE_DISPLAY ((char)0xA7)
#define LCD_SET_INDICATOR_OFF ((char)0xAC)
#define LCD_SET_INDICATOR_ON ((char)0xAD)
#define LCD_SET_DISPLAY_OFF ((char)0xAE)
#define LCD_SET_DISPLAY_ON ((char)0xAF)
#define LCD_SET_PAGE_ADDRESS ((char)0xB0)
#define LCD_SET_COM_OUTPUT_SCAN_DIRECTION ((char)0xC0)
#define LCD_SET_DISPLAY_OFFSET ((char)0xD3)
#define LCD_SET_READ_MODIFY_WRITE_MODE ((char)0xE0)
#define LCD_SOFTWARE_RESET ((char)0xE2)
#define LCD_NOP ((char)0xE3)
#define LCD_SET_END_OF_READ_MODIFY_WRITE_MODE ((char)0xEE)
/* LCD command codes */
#define LCD_CNTL_RESET 0xe2 // Software reset
#define LCD_CNTL_POWER 0x2f // Power control
#define LCD_CNTL_CONTRAST 0x81 // Contrast
#define LCD_CNTL_OUTSCAN 0xc8 // Output scan direction
#define LCD_CNTL_SEGREMAP 0xa1 // Segment remap
#define LCD_CNTL_DISPON 0xaf // Display on
#define LCD_CNTL_PAGE 0xb0 // Page address
#define LCD_CNTL_HIGHCOL 0x10 // Upper column address
#define LCD_CNTL_LOWCOL 0x00 // Lower column address
#endif /* CHARCELL or BITMAP */
/*** generic code ***/
struct scrollinfo {
char text[MAX_PATH];
char line[32];
int textlen;
int offset;
int startx;
int starty;
int space;
};
static void scroll_thread(void);
static char scroll_stack[DEFAULT_STACK_SIZE];
static char scroll_name[] = "scroll";
static char scroll_speed = 8; /* updates per second */
static char scroll_spacing = 3; /* spaces between end and start of text */
static struct scrollinfo scroll; /* only one scroll line at the moment */
static int scroll_count = 0;
#ifndef SIMULATOR
/*
* About /CS,DS,SC,SD
* ------------------
*
* LCD on JBP and JBR uses a SPI protocol to receive orders (SDA and SCK lines)
*
* - /CS -> Chip Selection line :
* 0 : LCD chipset is activated.
* - DS -> Data Selection line, latched at the rising edge
* of the 8th serial clock (*) :
* 0 : instruction register,
* 1 : data register;
* - SC -> Serial Clock line (SDA).
* - SD -> Serial Data line (SCK), latched at the rising edge
* of each serial clock (*).
*
* _ _
* /CS \ /
* \______________________________________________________/
* _____ ____ ____ ____ ____ ____ ____ ____ ____ _____
* SD \/ D7 \/ D6 \/ D5 \/ D4 \/ D3 \/ D2 \/ D1 \/ D0 \/
* _____/\____/\____/\____/\____/\____/\____/\____/\____/\_____
*
* _____ _ _ _ _ _ _ _ ________
* SC \ * \ * \ * \ * \ * \ * \ * \ *
* \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
* _ _________________________________________________________
* DS \/
* _/\_________________________________________________________
*
*/
/*
* The only way to do logical operations in an atomic way
* on SH1 is using :
*
* or.b/and.b/tst.b/xor.b #imm,@(r0,gbr)
*
* but GCC doesn't generate them at all so some assembly
* codes are needed here.
*
* The Global Base Register gbr is expected to be zero
* and r0 is the address of one register in the on-chip
* peripheral module.
*
*/
#define ASM_IMPLEMENTATION
static void lcd_write(bool command, int byte) __attribute__ ((section (".icode")));
static void lcd_write(bool command, int byte)
#ifdef ASM_IMPLEMENTATION
{
asm("and.b %0, @(r0,gbr)"
:
: /* %0 */ "I"(~(LCD_CS|LCD_DS|LCD_SD|LCD_SC)),
/* %1 */ "z"(LCDR));
if (command)
asm ("shll8 %0\n"
"0: \n\t"
"and.b %2,@(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3,@(r0,gbr)\n"
"1: \n\t"
"or.b %4,@(r0,gbr)\n"
"add #-1,%1\n\t"
"cmp/pl %1\n\t"
"bt 0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD|LCD_DS)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC),
/* %5 */ "z"(LCDR));
else
#if 0
asm ("shll8 %0\n"
"0: \n\t"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"add #-1, %1\n\t"
"cmp/pl %1\n\t"
"bt 0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD)),
/* %3 */ "I"(LCD_SD|LCD_DS),
/* %4 */ "I"(LCD_SC|LCD_DS),
/* %5 */ "z"(LCDR));
#else
asm ("shll8 %0\n"
"0: \n\t"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
"and.b %2, @(r0,gbr)\n\t"
"shll %0\n\t"
"bf 1f\n\t"
"or.b %3, @(r0,gbr)\n"
"1: \n\t"
"or.b %4, @(r0,gbr)\n"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD)),
/* %3 */ "I"(LCD_SD|LCD_DS),
/* %4 */ "I"(LCD_SC|LCD_DS),
/* %5 */ "z"(LCDR));
#endif
asm("or.b %0, @(r0,gbr)"
:
: /* %0 */ "I"(LCD_CS|LCD_DS|LCD_SD|LCD_SC),
/* %1 */ "z"(LCDR));
}
#else
{
int i;
char on,off;
PBDR &= ~LCD_CS; /* enable lcd chip select */
if ( command ) {
on=~(LCD_SD|LCD_SC|LCD_DS);
off=LCD_SC;
}
else {
on=~(LCD_SD|LCD_SC);
off=LCD_SC|LCD_DS;
}
/* clock out each bit, MSB first */
for (i=0x80;i;i>>=1)
{
PBDR &= on;
if (i & byte)
PBDR |= LCD_SD;
PBDR |= off;
}
PBDR |= LCD_CS; /* disable lcd chip select */
}
#endif /* ASM_IMPLEMENTATION */
#endif /* !SIMULATOR */
/*** model specific code */
#ifdef HAVE_LCD_CHARCELLS
#ifdef HAVE_NEW_CHARCELL_LCD
static const unsigned char lcd_ascii[] = {
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
0x10,0x11,0x05,0x13,0x14,0x15,0x16,0x17,
0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,
0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,
0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,
0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,
0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,
0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,
0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,
0x41,0x41,0x41,0x41,0x41,0x41,0x20,0x43,
0x45,0x45,0x45,0x45,0x49,0x49,0x49,0x49,
0x44,0x4e,0x4f,0x4f,0x4f,0x4f,0x4f,0x20,
0x20,0x55,0x55,0x55,0x55,0x59,0x20,0x20,
0x61,0x61,0x61,0x61,0x61,0x61,0x20,0x63,
0x65,0x65,0x65,0x65,0x69,0x69,0x69,0x69,
0x6f,0x6e,0x6f,0x6f,0x6f,0x6f,0x6f,0x20,
0x20,0x75,0x75,0x75,0x75,0x79,0x20,0x79
};
#else
static const unsigned char lcd_ascii[] = {
0x00,0x01,0x02,0x03,0x00,0x84,0x85,0x89,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xec,0xe3,0xe2,0xe1,0xe0,0xdf,0x15,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x24,0x25,0x26,0x37,0x06,0x29,0x2a,0x2b,
0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,
0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,
0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,
0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,
0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53,
0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,
0x5c,0x5d,0x5e,0xa9,0x33,0xce,0x00,0x15,
0x00,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,
0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,
0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,
0x7c,0x7d,0x7e,0x24,0x24,0x24,0x24,0x24,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,
0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,
0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,
0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,
0x45,0x45,0x45,0x45,0x45,0x45,0x24,0x47,
0x49,0x49,0x49,0x49,0x4d,0x4d,0x4d,0x4d,
0x48,0x52,0x53,0x53,0x53,0x53,0x53,0x24,
0x24,0x59,0x59,0x59,0x59,0x5d,0x24,0x24,
0x65,0x65,0x65,0x65,0x65,0x65,0x24,0x67,
0x69,0x69,0x69,0x69,0x6d,0x6d,0x6d,0x6d,
0x73,0x72,0x73,0x73,0x73,0x73,0x73,0x24,
0x24,0x79,0x79,0x79,0x79,0x7d,0x24,0x7d
};
#endif /* HAVE_NEW_CHARCELL_LCD */
#ifndef SIMULATOR
void lcd_clear_display(void)
{
int i;
lcd_write(true,LCD_CURSOR(0,0));
for (i=0;i<32;i++)
lcd_write(false,lcd_ascii[' ']);
}
void lcd_puts(int x, int y, unsigned char *string)
{
lcd_write(true,LCD_CURSOR(x,y));
while (*string && x++<11)
lcd_write(false,lcd_ascii[*(unsigned char*)string++]);
}
void lcd_define_pattern (int which,char *pattern,int length)
{
int i;
lcd_write(true,LCD_PRAM|which);
for (i=0;i<length;i++)
lcd_write(false,pattern[i]);
}
void lcd_double_height(bool on)
{
lcd_write(true,on?9:8);
}
static char icon_pos[] =
{
0, 0, 0, 0, /* Battery */
2, /* USB */
3, /* Play */
4, /* Record */
5, /* Pause */
5, /* Audio */
6, /* Repeat */
7, /* 1 */
9, /* Volume */
9, /* Volume 1 */
9, /* Volume 2 */
10, /* Volume 3 */
10, /* Volume 4 */
10, /* Volume 5 */
10, /* Param */
};
static char icon_mask[] =
{
0x02, 0x08, 0x04, 0x10, /* Battery */
0x04, /* USB */
0x10, /* Play */
0x10, /* Record */
0x02, /* Pause */
0x10, /* Audio */
0x02, /* Repeat */
0x01, /* 1 */
0x04, /* Volume */
0x02, /* Volume 1 */
0x01, /* Volume 2 */
0x08, /* Volume 3 */
0x04, /* Volume 4 */
0x01, /* Volume 5 */
0x10, /* Param */
};
void lcd_icon(int icon, bool enable)
{
static unsigned char icon_mirror[11] = {0};
int pos, mask;
pos = icon_pos[icon];
mask = icon_mask[icon];
lcd_write(true, LCD_ICON(pos));
if(enable)
icon_mirror[pos] |= mask;
else
icon_mirror[pos] &= ~mask;
lcd_write(false, icon_mirror[pos]);
}
#endif /* !SIMULATOR */
#endif /* HAVE_LCD_CHARCELLS */
#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
void lcd_icon(int icon, bool enable)
{
icon = icon;
enable = enable;
}
#endif
#if defined(HAVE_LCD_CHARCELLS) || defined(SIMULATOR) /* not BITMAP */
void lcd_init (void)
{
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name);
#if defined(LOADABLE_FONTS) && defined(SIMULATOR)
lcd_init_fonts();
#endif
}
#endif
#ifdef SIMULATOR
void lcd_set_contrast(int val)
{
val = val;
}
#else
#ifdef HAVE_LCD_BITMAP
void lcd_set_contrast(int val)
{
lcd_write(true, LCD_CNTL_CONTRAST);
lcd_write(true, val);
}
#else
void lcd_set_contrast(int val)
{
lcd_write(true, LCD_CONTRAST_SET);
lcd_write(false, 31-val);
}
#endif
#endif
#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR) /* not CHARCELLS */
/*
* All bitmaps have this format:
* Bits within a byte are arranged veritcally, LSB at top.
* Bytes are stored in column-major format, with byte 0 at top left,
* byte 1 is 2nd from top, etc. Bytes following left-most column
* starts 2nd left column, etc.
*
* Note: The HW takes bitmap bytes in row-major order.
*
* Memory copy of display bitmap
*/
unsigned char lcd_framebuffer[LCD_WIDTH][LCD_HEIGHT/8] __attribute__ ((section (".idata")));
static int font=0;
static int xmargin=0;
static int ymargin=0;
/*
* ASCII character generation tables
*
* This contains only the printable characters (0x20-0x7f).
* Each element in this table is a character pattern bitmap.
*/
#define ASCII_MIN 0x20 /* First char in table */
#define ASCII_MAX 0x7f /* Last char in table */
extern unsigned char char_gen_6x8[][5];
extern unsigned char char_gen_8x12[][14];
extern unsigned char char_gen_12x16[][22];
/* All zeros and ones bitmaps for area filling */
static unsigned char zeros[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00 };
static unsigned char ones[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff };
static char fonts[] = { 6,8,12 };
static char fontheight[] = { 8,12,16 };
#ifndef SIMULATOR
/*
* Initialize LCD
*/
void lcd_init (void)
{
/* Initialize PB0-3 as output pins */
PBCR2 &= 0xff00; /* MD = 00 */
PBIOR |= 0x000f; /* IOR = 1 */
lcd_clear_display();
lcd_update();
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name);
}
/*
* Update the display.
* This must be called after all other LCD functions that change the display.
*/
void lcd_update (void) __attribute__ ((section (".icode")));
void lcd_update (void)
{
int x, y;
/* Copy display bitmap to hardware */
for (y = 0; y < LCD_HEIGHT/8; y++)
{
lcd_write (true, LCD_CNTL_PAGE | (y & 0xf));
lcd_write (true, LCD_CNTL_HIGHCOL);
lcd_write (true, LCD_CNTL_LOWCOL);
for (x = 0; x < LCD_WIDTH; x++)
lcd_write (false, lcd_framebuffer[x][y]);
}
}
/*
* Update a fraction of the display.
*/
void lcd_update_rect (int, int, int, int) __attribute__ ((section (".icode")));
void lcd_update_rect (int x_start, int y,
int width, int height)
{
int ymax;
int xmax;
int x;
/* The Y coordinates have to work on even 8 pixel rows */
ymax = (y + height)/8;
y /= 8;
xmax = x_start + width;
if(xmax > LCD_WIDTH)
xmax = LCD_WIDTH;
if(ymax >= LCD_HEIGHT/8)
ymax = LCD_HEIGHT/8-1;
/* Copy specified rectange bitmap to hardware */
for (; y <= ymax; y++)
{
lcd_write (true, LCD_CNTL_PAGE | (y & 0xf));
lcd_write (true, LCD_CNTL_HIGHCOL | ((x_start>>4) & 0xf));
lcd_write (true, LCD_CNTL_LOWCOL | (x_start & 0xf));
for (x = x_start; x < xmax; x++)
lcd_write (false, lcd_framebuffer[x][y]);
}
}
#endif /* SIMULATOR */
/*
* Clear the display
*/
void lcd_clear_display (void)
{
memset (lcd_framebuffer, 0, sizeof lcd_framebuffer);
#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
/* this function is being used when simulating a charcell LCD and
then we update immediately */
lcd_update();
#endif
}
void lcd_setfont(int newfont)
{
font = newfont;
}
void lcd_setmargins(int x, int y)
{
xmargin = x;
ymargin = y;
}
int lcd_getxmargin(void)
{
return xmargin;
}
int lcd_getymargin(void)
{
return ymargin;
}
#ifdef LOADABLE_FONTS
static unsigned char* _font = NULL;
int lcd_init_fonts(void)
{
if (!_font)
_font = ajf_read_font("/system.ajf");
if (!_font)
{
lcd_putsxy(0,0,"No font", 0);
return -1;
}
return 0;
}
void lcd_setldfont(unsigned char* f)
{
_font = f;
}
unsigned char* lcd_getcurrentldfont()
{
if (!_font)
panicf("No font loaded!");
return _font;
}
/*
* Return width and height of a string with a given font.
*/
int lcd_getstringsize(unsigned char *str, unsigned char* font, int *w, int *h)
{
int width=0;
int height=0;
unsigned char ch;
if (!font)
panicf("No font specified");
while((ch = *str++))
{
int dw,dh;
ajf_get_charsize(ch, font, &dw, &dh);
if (dh>height)
height = dh;
width+=dw;
}
*w = width;
*h = height;
return width;
}
/*
* Put a string at specified bit position
*/
void lcd_putsldfxy(int x, int y, unsigned char *str)
{
unsigned char ch;
int nx;
int ny=8;
int lcd_x = x;
int lcd_y = y;
if (!_font)
{
lcd_putsxy(0,0,"No font", 0);
return;
}
ny = (int)_font[2];
while (((ch = *str++) != '\0'))
{
unsigned char *char_buf = ajf_get_charbuf(ch, _font, &nx, &ny);
if (!char_buf)
{
char_buf = ajf_get_charbuf('?', _font, &nx, &ny);
if (!char_buf)
panicf("Bad font");
}
if(lcd_x + nx > LCD_WIDTH)
break;
lcd_bitmap (&char_buf[0], lcd_x, lcd_y, nx, ny, true);
lcd_x += nx;
}
}
#endif
#ifdef LCD_PROPFONTS
extern unsigned char char_dw_8x8_prop[][9];
/*
* Return width and height of a given font.
*/
int lcd_getstringsize(unsigned char *str, unsigned int font, int *w, int *h)
{
int width=0;
int height=0;
unsigned char ch, byte;
(void)font;
while((ch = *str++)) {
/* Limit to char generation table */
if (ch < ASCII_MIN)
/* replace unsupported letters with question marks */
ch = ' '-ASCII_MIN;
else
ch -= ASCII_MIN;
byte = char_dw_8x8_prop[ch][8];
width += byte>>4;
if((byte & 0x0f) > height)
height = byte & 0x0f;
}
*w = width;
*h = height;
return width;
}
/*
* Put a string at specified bit position
*/
void lcd_putspropxy(int x, int y, unsigned char *str, int thisfont)
{
unsigned int ch;
int nx;
int ny=8;
unsigned char *src;
int lcd_x = x;
int lcd_y = y;
(void)thisfont;
while (((ch = *str++) != '\0'))
{
/* Limit to char generation table */
if (ch < ASCII_MIN)
/* replace unsupported letters with question marks */
ch = ' '-ASCII_MIN;
else
ch -= ASCII_MIN;
nx = char_dw_8x8_prop[ch][8] >> 4;
if(lcd_x + nx > LCD_WIDTH)
break;
src = char_dw_8x8_prop[ch];
lcd_clearrect (lcd_x+nx, lcd_y, 1, ny);
lcd_bitmap (src, lcd_x, lcd_y, nx, ny, true);
lcd_x += nx+1;
}
}
#endif
/*
* Put a string at specified character position
*/
void lcd_puts(int x, int y, unsigned char *str)
{
#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
/* We make the simulator truncate the string if it reaches the right edge,
as otherwise it'll wrap. The real target doesn't wrap. */
char buffer[12];
if(strlen(str)+x > 11 ) {
strncpy(buffer, str, sizeof buffer);
buffer[11-x]=0;
str = buffer;
}
xmargin = 0;
ymargin = 8;
#endif
if(!str || !str[0])
return;
#ifdef LCD_PROPFONTS
lcd_putspropxy( xmargin + x*fonts[font],
ymargin + y*fontheight[font],
str, font );
#elif LOADABLE_FONTS
{
int w,h;
lcd_getstringsize(str,_font,&w,&h);
lcd_putsldfxy( xmargin + x*w/strlen(str), ymargin + y*h, str );
}
#else
lcd_putsxy( xmargin + x*fonts[font],
ymargin + y*fontheight[font],
str, font );
#endif
#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
/* this function is being used when simulating a charcell LCD and
then we update immediately */
lcd_update();
#endif
}
/*
* Put a string at specified bit position
*/
void lcd_putsxy(int x, int y, unsigned char *str, int thisfont)
{
#ifdef LCD_PROPFONTS
lcd_putspropxy(x,y,str,thisfont);
#else
int nx = fonts[thisfont];
int ny = fontheight[thisfont];
int ch;
unsigned char *src;
int lcd_x = x;
int lcd_y = y;
#ifdef LOADABLE_FONTS
if ( _font ) {
lcd_putsldfxy(x,y,str);
return;
}
#endif
while (((ch = *str++) != '\0') && (lcd_x + nx < LCD_WIDTH))
{
if (lcd_y + ny > LCD_HEIGHT)
return;
/* Limit to char generation table */
if ((ch < ASCII_MIN) || (ch > ASCII_MAX))
/* replace unsupported letters with question marks */
ch = '?' - ASCII_MIN;
else
ch -= ASCII_MIN;
if (thisfont == 2)
src = char_gen_12x16[ch];
else if (thisfont == 1)
src = char_gen_8x12[ch];
else
src = char_gen_6x8[ch];
lcd_bitmap (src, lcd_x, lcd_y, nx-1, ny, true);
lcd_bitmap (zeros, lcd_x+nx-1, lcd_y, 1, ny, true);
lcd_x += nx;
}
#endif
}
/*
* Display a bitmap at (x, y), size (nx, ny)
* clear is true to clear destination area first
*/
void lcd_bitmap (unsigned char *src, int x, int y, int nx, int ny,
bool clear) __attribute__ ((section (".icode")));
void lcd_bitmap (unsigned char *src, int x, int y, int nx, int ny,
bool clear)
{
unsigned char *dst;
unsigned char *dst2;
unsigned int data, mask, mask2, mask3, mask4;
int shift;
if (((unsigned)x >= LCD_WIDTH) || ((unsigned)y >= LCD_HEIGHT))
return;
if (((unsigned)(x + nx)) >= LCD_WIDTH)
nx = LCD_WIDTH - x;
if (((unsigned)(y + ny)) >= LCD_HEIGHT)
ny = LCD_HEIGHT - y;
shift = y & 7;
dst2 = &lcd_framebuffer[x][y/8];
ny += shift;
/* Calculate bit masks */
mask4 = ~(0xfe << ((ny-1) & 7));
if (clear)
{
mask = ~(0xff << shift);
mask2 = 0;
mask3 = ~mask4;
if (ny <= 8)
mask3 |= mask;
}
else
mask = mask2 = mask3 = 0xff;
/* Loop for each column */
for (x = 0; x < nx; x++)
{
dst = dst2;
dst2 += LCD_HEIGHT/8;
data = 0;
y = 0;
if (ny > 8)
{
/* First partial row */
data = *src++ << shift;
*dst = (*dst & mask) | data;
data >>= 8;
dst++;
/* Intermediate rows */
for (y = 8; y < ny-8; y += 8)
{
data |= *src++ << shift;
*dst = (*dst & mask2) | data;
data >>= 8;
dst++;
}
}
/* Last partial row */
if (y + shift < ny)
data |= *src++ << shift;
*dst = (*dst & mask3) | (data & mask4);
}
}
/*
* Draw a rectangle with point a (upper left) at (x, y)
* and size (nx, ny)
*/
void lcd_drawrect (int x, int y, int nx, int ny)
{
lcd_drawline(x, y, nx, y);
lcd_drawline(x, ny, nx, ny);
lcd_drawline(x, y, x, ny);
lcd_drawline(nx, y, nx, ny);
}
/*
* Clear a rectangular area at (x, y), size (nx, ny)
*/
void lcd_clearrect (int x, int y, int nx, int ny)
{
int i;
for (i = 0; i < nx; i++)
lcd_bitmap (zeros, x+i, y, 1, ny, true);
}
/*
* Fill a rectangular area at (x, y), size (nx, ny)
*/
void lcd_fillrect (int x, int y, int nx, int ny)
{
int i;
for (i = 0; i < nx; i++)
lcd_bitmap (ones, x+i, y, 1, ny, true);
}
/* Invert a rectangular area at (x, y), size (nx, ny) */
void lcd_invertrect (int x, int y, int nx, int ny)
{
int i,j;
if (x>LCD_WIDTH)
return;
if (y>LCD_HEIGHT)
return;
if (x+nx>LCD_WIDTH)
nx=LCD_WIDTH-x;
if (y+ny>LCD_HEIGHT)
ny=LCD_HEIGHT-y;
for (i = 0; i < nx; i++)
for (j = 0; j < ny; j++)
INVERT_PIXEL((x+i),(y+j));
}
void lcd_drawline( int x1, int y1, int x2, int y2 )
{
int numpixels;
int i;
int deltax, deltay;
int d, dinc1, dinc2;
int x, xinc1, xinc2;
int y, yinc1, yinc2;
deltax = abs(x2 - x1);
deltay = abs(y2 - y1);
if(deltax >= deltay)
{
numpixels = deltax;
d = 2 * deltay - deltax;
dinc1 = deltay * 2;
dinc2 = (deltay - deltax) * 2;
xinc1 = 1;
xinc2 = 1;
yinc1 = 0;
yinc2 = 1;
}
else
{
numpixels = deltay;
d = 2 * deltax - deltay;
dinc1 = deltax * 2;
dinc2 = (deltax - deltay) * 2;
xinc1 = 0;
xinc2 = 1;
yinc1 = 1;
yinc2 = 1;
}
numpixels++; /* include endpoints */
if(x1 > x2)
{
xinc1 = -xinc1;
xinc2 = -xinc2;
}
if(y1 > y2)
{
yinc1 = -yinc1;
yinc2 = -yinc2;
}
x = x1;
y = y1;
for(i=0; i<numpixels; i++)
{
DRAW_PIXEL(x,y);
if(d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
void lcd_clearline( int x1, int y1, int x2, int y2 )
{
int numpixels;
int i;
int deltax, deltay;
int d, dinc1, dinc2;
int x, xinc1, xinc2;
int y, yinc1, yinc2;
deltax = abs(x2 - x1);
deltay = abs(y2 - y1);
if(deltax >= deltay)
{
numpixels = deltax;
d = 2 * deltay - deltax;
dinc1 = deltay * 2;
dinc2 = (deltay - deltax) * 2;
xinc1 = 1;
xinc2 = 1;
yinc1 = 0;
yinc2 = 1;
}
else
{
numpixels = deltay;
d = 2 * deltax - deltay;
dinc1 = deltax * 2;
dinc2 = (deltax - deltay) * 2;
xinc1 = 0;
xinc2 = 1;
yinc1 = 1;
yinc2 = 1;
}
numpixels++; /* include endpoints */
if(x1 > x2)
{
xinc1 = -xinc1;
xinc2 = -xinc2;
}
if(y1 > y2)
{
yinc1 = -yinc1;
yinc2 = -yinc2;
}
x = x1;
y = y1;
for(i=0; i<numpixels; i++)
{
CLEAR_PIXEL(x,y);
if(d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
/*
* Set a single pixel
*/
void lcd_drawpixel(int x, int y)
{
DRAW_PIXEL(x,y);
}
/*
* Clear a single pixel
*/
void lcd_clearpixel(int x, int y)
{
CLEAR_PIXEL(x,y);
}
/*
* Return width and height of a given font.
*/
void lcd_getfontsize(unsigned int font, int *width, int *height)
{
if(font < sizeof(fonts)) {
*width = fonts[font];
*height = fontheight[font];
}
}
#else
/* no LCD defined, no code to use */
#endif
void lcd_puts_scroll(int x, int y, unsigned char* string )
{
struct scrollinfo* s = &scroll;
#ifdef HAVE_LCD_CHARCELLS
s->space = 11 - x;
#else
#if defined(LCD_PROPFONTS) || defined(LOADABLE_FONTS)
unsigned char ch[2];
int w, h;
#endif
int width, height;
lcd_getfontsize(font, &width, &height);
#if defined(LCD_PROPFONTS) || defined(LOADABLE_FONTS)
ch[1] = 0; /* zero terminate */
ch[0] = string[0];
width = 0;
s->space = 0;
while ( ch[0] &&
#ifdef LCD_PROPFONTS
(width + lcd_getstringsize(ch, 0, &w, &h) <
(LCD_WIDTH - x*8))) {
#else
(width + lcd_getstringsize(ch, _font, &w, &h) <
(LCD_WIDTH - x*8))) {
#endif
width += w;
s->space++;
ch[0]=string[s->space];
}
#else
s->space = (LCD_WIDTH - xmargin - x*width) / width;
#endif
#endif
lcd_puts(x,y,string);
s->textlen = strlen(string);
if ( s->textlen > s->space ) {
s->offset=s->space;
s->startx=x;
s->starty=y;
strncpy(s->text,string,sizeof s->text);
s->text[sizeof s->text - 1] = 0;
strncpy(s->line,string,sizeof s->line);
s->line[sizeof s->line - 1] = 0;
scroll_count = 1;
}
}
void lcd_stop_scroll(void)
{
if ( scroll_count ) {
struct scrollinfo* s = &scroll;
scroll_count = 0;
#ifdef LCD_PROPFONTS
lcd_clearrect(xmargin + s->startx*fonts[font],
ymargin + s->starty*fontheight[font],
LCD_WIDTH - xmargin,
fontheight[font]);
#elif defined(LOADABLE_FONTS)
{
int w,h;
lcd_getstringsize( s->text, _font, &w, &h);
lcd_clearrect(xmargin + s->startx*w/s->textlen,
ymargin + s->starty*h,
LCD_WIDTH - xmargin,
h);
}
#endif
/* restore scrolled row */
lcd_puts(s->startx,s->starty,s->text);
lcd_update();
}
}
void lcd_scroll_pause(void)
{
scroll_count = 0;
}
void lcd_scroll_resume(void)
{
scroll_count = 1;
}
void lcd_scroll_speed(int speed)
{
scroll_speed = speed;
}
static void scroll_thread(void)
{
struct scrollinfo* s = &scroll;
while ( 1 ) {
if ( !scroll_count ) {
yield();
continue;
}
/* wait 0.5s before starting scroll */
if ( scroll_count < scroll_speed/2 )
scroll_count++;
else {
int i;
for ( i=0; i<s->space-1; i++ )
s->line[i] = s->line[i+1];
if ( s->offset < s->textlen ) {
s->line[(int)s->space - 1] = s->text[(int)s->offset];
s->offset++;
}
else {
s->line[s->space - 1] = ' ';
if ( s->offset < s->textlen + scroll_spacing - 1 )
s->offset++;
else
s->offset = 0;
}
#ifdef LCD_PROPFONTS
lcd_clearrect(xmargin + s->startx*fonts[font],
ymargin + s->starty*fontheight[font],
LCD_WIDTH - xmargin,
fontheight[font]);
#elif defined(LOADABLE_FONTS)
{
int w,h;
lcd_getstringsize( s->text, _font, &w, &h);
lcd_clearrect(xmargin + s->startx*w/s->textlen,
ymargin + s->starty*h,
LCD_WIDTH - xmargin,
h);
}
#endif
lcd_puts(s->startx,s->starty,s->line);
lcd_update();
}
sleep(HZ/scroll_speed);
}
}
/* -----------------------------------------------------------------
* local variables:
* eval: (load-file "../rockbox-mode.el")
* end:
*/
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