244 lines
7 KiB
C
244 lines
7 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2002 by Daniel Stenberg <daniel@haxx.se>
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/*
|
|
* This file is meant for generic LCD defines and global variables etc.
|
|
*/
|
|
|
|
#include "lcd.h"
|
|
|
|
#define DISP_X LCD_WIDTH /* Display width in pixels */
|
|
#define DISP_Y LCD_HEIGHT /* Display height in pixels */
|
|
|
|
#define CHAR_X 6 /* Character width in pixels */
|
|
#define CHAR_Y 8 /* Character height in pixels */
|
|
#define COL_MASK 0xff /* Character column pixels changed */
|
|
|
|
/*
|
|
* ASCII character generation table
|
|
*
|
|
* This contains only the printable characters (0x20-0x7f).
|
|
* Each row in this table is a 5x8 pixel character pattern.
|
|
* Each byte is a column of pixels, with the top pixel in the LSB.
|
|
*/
|
|
#define ASCII_MIN 0x20 /* First char in table */
|
|
#define ASCII_MAX 0x7f /* Last char in table */
|
|
|
|
static const unsigned char char_gen[ASCII_MAX-ASCII_MIN+1][CHAR_X-1] =
|
|
{
|
|
0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20-0x2f */
|
|
0x00, 0x00, 0x4f, 0x00, 0x00,
|
|
0x00, 0x07, 0x00, 0x07, 0x00,
|
|
0x14, 0x7f, 0x14, 0x7f, 0x14,
|
|
0x24, 0x2a, 0x7f, 0x2a, 0x12,
|
|
0x23, 0x13, 0x08, 0x64, 0x62,
|
|
0x36, 0x49, 0x55, 0x22, 0x50,
|
|
0x00, 0x05, 0x03, 0x00, 0x00,
|
|
0x00, 0x1c, 0x22, 0x41, 0x00,
|
|
0x00, 0x41, 0x22, 0x1c, 0x00,
|
|
0x14, 0x08, 0x3e, 0x08, 0x14,
|
|
0x08, 0x08, 0x3e, 0x08, 0x08,
|
|
0x00, 0xa0, 0x60, 0x00, 0x00,
|
|
0x08, 0x08, 0x08, 0x08, 0x08,
|
|
0x00, 0x60, 0x60, 0x00, 0x00,
|
|
0x20, 0x10, 0x08, 0x04, 0x02,
|
|
|
|
0x3e, 0x51, 0x49, 0x45, 0x3e, /* 0x30-0x3f */
|
|
0x00, 0x42, 0x7f, 0x40, 0x00,
|
|
0x42, 0x61, 0x51, 0x49, 0x46,
|
|
0x21, 0x41, 0x45, 0x4b, 0x31,
|
|
0x18, 0x14, 0x12, 0x7f, 0x10,
|
|
0x27, 0x45, 0x45, 0x45, 0x39,
|
|
0x3c, 0x4a, 0x49, 0x49, 0x30,
|
|
0x01, 0x71, 0x09, 0x05, 0x03,
|
|
0x36, 0x49, 0x49, 0x49, 0x36,
|
|
0x06, 0x49, 0x49, 0x29, 0x1e,
|
|
0x00, 0x6c, 0x6c, 0x00, 0x00,
|
|
0x00, 0xac, 0x6c, 0x00, 0x00,
|
|
0x08, 0x14, 0x22, 0x41, 0x00,
|
|
0x14, 0x14, 0x14, 0x14, 0x14,
|
|
0x00, 0x41, 0x22, 0x14, 0x08,
|
|
0x02, 0x01, 0x51, 0x09, 0x06,
|
|
|
|
0x32, 0x49, 0x79, 0x41, 0x3e, /* 0x40-0x4f */
|
|
0x7e, 0x11, 0x11, 0x11, 0x7e,
|
|
0x7f, 0x49, 0x49, 0x49, 0x36,
|
|
0x3e, 0x41, 0x41, 0x41, 0x22,
|
|
0x7f, 0x41, 0x41, 0x22, 0x1c,
|
|
0x7f, 0x49, 0x49, 0x49, 0x41,
|
|
0x7f, 0x09, 0x09, 0x09, 0x01,
|
|
0x3e, 0x41, 0x49, 0x49, 0x7a,
|
|
0x7f, 0x08, 0x08, 0x08, 0x7f,
|
|
0x00, 0x41, 0x7f, 0x41, 0x00,
|
|
0x20, 0x40, 0x41, 0x3f, 0x01,
|
|
0x7f, 0x08, 0x14, 0x22, 0x41,
|
|
0x7f, 0x40, 0x40, 0x40, 0x40,
|
|
0x7f, 0x02, 0x0c, 0x02, 0x7f,
|
|
0x7f, 0x04, 0x08, 0x10, 0x7f,
|
|
0x3e, 0x41, 0x41, 0x41, 0x3e,
|
|
|
|
0x7f, 0x09, 0x09, 0x09, 0x06, /* 0x50-0x5f */
|
|
0x3e, 0x41, 0x51, 0x21, 0x5e,
|
|
0x7f, 0x09, 0x19, 0x29, 0x46,
|
|
0x46, 0x49, 0x49, 0x49, 0x31,
|
|
0x01, 0x01, 0x7f, 0x01, 0x01,
|
|
0x3f, 0x40, 0x40, 0x40, 0x3f,
|
|
0x1f, 0x20, 0x40, 0x20, 0x1f,
|
|
0x3f, 0x40, 0x38, 0x40, 0x3f,
|
|
0x63, 0x14, 0x08, 0x14, 0x63,
|
|
0x07, 0x08, 0x70, 0x08, 0x07,
|
|
0x71, 0x51, 0x49, 0x45, 0x43,
|
|
0x00, 0x7f, 0x41, 0x41, 0x00,
|
|
0x02, 0x04, 0x08, 0x10, 0x20,
|
|
0x00, 0x41, 0x41, 0x7f, 0x00,
|
|
0x04, 0x02, 0x01, 0x02, 0x04,
|
|
0x40, 0x40, 0x40, 0x40, 0x40,
|
|
|
|
0x00, 0x01, 0x02, 0x04, 0x00, /* 0x60-0x6f */
|
|
0x20, 0x54, 0x54, 0x54, 0x78,
|
|
0x7f, 0x48, 0x44, 0x44, 0x38,
|
|
0x38, 0x44, 0x44, 0x44, 0x20,
|
|
0x38, 0x44, 0x44, 0x48, 0x7f,
|
|
0x38, 0x54, 0x54, 0x54, 0x18,
|
|
0x08, 0x7e, 0x09, 0x01, 0x02,
|
|
0x18, 0xa4, 0xa4, 0xa4, 0x7c,
|
|
0x7f, 0x08, 0x04, 0x04, 0x78,
|
|
0x00, 0x44, 0x7d, 0x40, 0x00,
|
|
0x40, 0x80, 0x84, 0x7d, 0x00,
|
|
0x7f, 0x10, 0x28, 0x44, 0x00,
|
|
0x00, 0x41, 0x7f, 0x40, 0x00,
|
|
0x7c, 0x04, 0x18, 0x04, 0x78,
|
|
0x7c, 0x08, 0x04, 0x04, 0x78,
|
|
0x38, 0x44, 0x44, 0x44, 0x38,
|
|
|
|
0xfc, 0x24, 0x24, 0x24, 0x18, /* 0x70-0x7f */
|
|
0x18, 0x24, 0x24, 0x24, 0xfc,
|
|
0x7c, 0x08, 0x04, 0x04, 0x08,
|
|
0x48, 0x54, 0x54, 0x54, 0x20,
|
|
0x04, 0x3f, 0x44, 0x40, 0x20,
|
|
0x3c, 0x40, 0x40, 0x20, 0x7c,
|
|
0x1c, 0x20, 0x40, 0x20, 0x1c,
|
|
0x3c, 0x40, 0x30, 0x40, 0x3c,
|
|
0x44, 0x28, 0x10, 0x28, 0x44,
|
|
0x1c, 0xa0, 0xa0, 0xa0, 0x7c,
|
|
0x44, 0x64, 0x54, 0x4c, 0x44,
|
|
0x00, 0x08, 0x36, 0x41, 0x00,
|
|
0x00, 0x00, 0x7f, 0x00, 0x00,
|
|
0x00, 0x41, 0x36, 0x08, 0x00,
|
|
0x04, 0x02, 0x04, 0x08, 0x04,
|
|
0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
|
|
};
|
|
|
|
/*
|
|
* Memory copy of display bitmap
|
|
*
|
|
* This has the same format as the Recorder hardware:
|
|
* Bits within a byte are arranged veritcally, LSB at top.
|
|
* Byte 0 is top left, byte 1 is 2nd left, byte DISP_X starts 2nd row.
|
|
*/
|
|
unsigned char display[LCD_HEIGHT/8][LCD_WIDTH];
|
|
|
|
static unsigned char lcd_y; /* Current pixel row */
|
|
static unsigned char lcd_x; /* Current pixel column */
|
|
|
|
/*
|
|
* Set current x,y position
|
|
*/
|
|
void lcd_position(int x, int y)
|
|
{
|
|
if (x >= 0 && x < DISP_X && y >= 0 && y < DISP_Y) {
|
|
lcd_x = x;
|
|
lcd_y = y;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Clear the display
|
|
*/
|
|
void lcd_clear(void)
|
|
{
|
|
lcd_x = 0;
|
|
lcd_y = 0;
|
|
memset (display, 0, sizeof display);
|
|
}
|
|
|
|
/*
|
|
* Display a character at current position.
|
|
* This writes a 5x8 character within a 6x8 cell.
|
|
* The cell does not have to be aligned to a display byte.
|
|
* The top left of the cell is displayed at the current position.
|
|
* invert is TRUE to display in reverse video.
|
|
*/
|
|
void lcd_char (int ch, char invert)
|
|
{
|
|
unsigned char (*dp)[DISP_X] = (void *) &display[lcd_y/8][lcd_x];
|
|
unsigned long shift, mask, col;
|
|
|
|
/* Limit to char generation table */
|
|
if (ch < ASCII_MIN || ch > ASCII_MAX)
|
|
ch = ASCII_MAX;
|
|
|
|
/* Calculate shift and masks for cell bit position */
|
|
shift = (lcd_y & 0x7);
|
|
mask = ~(COL_MASK << shift);
|
|
if (invert)
|
|
invert = ~mask;
|
|
|
|
/* Write each char column */
|
|
for (col = 0; col < CHAR_X-1; col++) {
|
|
unsigned long data = (char_gen[ch-ASCII_MIN][col] << shift) ^ invert;
|
|
dp[0][col] = (dp[0][col] & mask) | data;
|
|
if (lcd_y < DISP_Y-8)
|
|
dp[1][col] = (dp[1][col] & (mask >> 8)) | (data >> 8);
|
|
}
|
|
|
|
/* Column after char */
|
|
dp[0][CHAR_X-1] = (dp[0][CHAR_X-1] & mask) | invert;
|
|
if (lcd_y < DISP_Y-8)
|
|
dp[1][CHAR_X-1] = (dp[1][CHAR_X-1] & (mask >> 8)) | (invert >> 8);
|
|
}
|
|
|
|
/*
|
|
* Output a string at current position
|
|
*/
|
|
void lcd_string(const char *text, char invert)
|
|
{
|
|
int ch;
|
|
|
|
while ((ch = *text++) != '\0') {
|
|
if (lcd_y > DISP_Y-CHAR_Y) {
|
|
/* Scroll (8 pixels) */
|
|
memcpy (display[0], display[1], DISP_X*(DISP_Y/8-1));
|
|
lcd_y -= 8;
|
|
}
|
|
|
|
if (ch == '\n')
|
|
lcd_x = DISP_X;
|
|
else {
|
|
lcd_char (ch, invert);
|
|
lcd_x += CHAR_X;
|
|
}
|
|
|
|
if (lcd_x > DISP_X-CHAR_X) {
|
|
/* Wrap to next line */
|
|
lcd_x = 0;
|
|
lcd_y += CHAR_Y;
|
|
}
|
|
}
|
|
}
|