Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/firmware/lcd.h
Daniel Stenberg a1a2d9ebcc Updated a lot. 
Uses the new config #defines for hardware features
Allows SIMULATOR
Now contains defines for the bitmap LCD display
Most of this came from Alan and Gary, kudos!


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@74 a1c6a512-1295-4272-9138-f99709370657
2002-04-11 12:35:54 +00:00

317 lines
10 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* 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.
*
****************************************************************************/
#ifndef __LCD_H__
#define __LCD_H__
#include "sh7034.h"
#include "system.h"
#include "types.h"
#define LCDR (PBDR+1)
/* PA14 : /LCD-BL --- backlight */
#define LCD_BL (14-8)
#ifdef HAVE_LCD_CHARCELLS
/* JukeBox MP3 Player - AJB6K, AJBS20 */
# 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
# ifndef JBP_OLD
# 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_ASCII(c) (lcd_ascii[(c)&255])
# define LCD_CURSOR(x,y) ((char)(LCD_CRAM+((y)*16+(x))))
# define LCD_ICON(i) ((char)(LCD_IRAM+i))
# define LCD_ICON_BATTERY 0
# define LCD_BATTERY_FRAME 0x02
# define LCD_BATTERY_BAR1 0x08
# define LCD_BATTERY_BAR2 0x04
# define LCD_BATTERY_BAR3 0x10
# define LCD_ICON_USB 2
# define LCD_USB_LOGO 0xFF
# define LCD_ICON_PLAY 3
# define LCD_PLAY_ICON 0xFF
# define LCD_ICON_RECORD 4
# define LCD_RECORD_ICON 0x10
# define LCD_ICON_STOP 5
# define LCD_STOP_ICON 0x0F
# define LCD_ICON_AUDIO 5
# define LCD_AUDIO_ICON 0xF0
# define LCD_ICON_REVERSE 6
# define LCD_REVERSE_ICON 0xFF
# define LCD_ICON_SINGLE 7
# define LCD_SINGLE_ICON 0xFF
# define LCD_ICON_VOLUME0 9
# define LCD_VOLUME_ICON 0x04
# define LCD_VOLUME_BAR1 0x02
# define LCD_VOLUME_BAR2 0x01
# define LCD_ICON_VOLUME1 10
# define LCD_VOLUME_BAR3 0x08
# define LCD_VOLUME_BAR4 0x04
# define LCD_VOLUME_BAR5 0x01
# define LCD_ICON_PARAM 10
# define LCD_PARAM_SYMBOL 0xF0
#endif
#ifdef HAVE_LCD_BITMAP
/* JukeBox MP3 Recorder - AJBR --- FIXME */
/* Defines from Alan on IRC, April 11th 2002 */
#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)
#define DISP_X 112
#define DISP_Y 64
#define LCD_WIDTH DISP_X /* Display width in pixels */
#define LCD_HEIGHT DISP_Y /* Display height in pixels */
void lcd_init (void);
void lcd_update (void);
void lcd_clear_display (void);
void lcd_position (int x, int y, int size);
void lcd_string (const char *str);
void lcd_bitmap (const unsigned char *src, int x, int y, int nx, int ny,
bool clear);
void lcd_clearrect (int x, int y, int nx, int ny);
void lcd_fillrect (int x, int y, int nx, int ny);
void lcd_invertrect (int x, int y, int nx, int ny);
#endif
#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.
*
*/
static inline void lcd_start (void)
/*
* Enter a LCD session :
*
* QI(LCDR) &= ~(LCD_CS|LCD_DS|LCD_SD|LCD_SC);
*/
{
asm
("and.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(~(LCD_CS|LCD_DS|LCD_SD|LCD_SC)),
/* %1 */ "z"(LCDR));
}
static inline void lcd_stop (void)
/*
* Leave a LCD session :
*
* QI(LCDR) |= LCD_CS|LCD_RS|LCD_SD|LCD_SC;
*/
{
asm
("or.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(LCD_CS|LCD_DS|LCD_SD|LCD_SC),
/* %1 */ "z"(LCDR));
}
static inline void lcd_byte (int byte,int rs)
/*
* char j = 0x80;
* if (rs)
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC|LCD_DS;
* }
* while ((unsigned char)j >>= 1);
* else
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD|LCD_DS);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC;
* }
* while ((unsigned char)j >>= 1);
*/
{
if (rs > 0)
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC|LCD_DS),
/* %5 */ "z"(LCDR));
else
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_DS|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC),
/* %5 */ "z"(LCDR));
}
#else
/* make a faked lcd_byte() function when simulating */
#define lcd_byte(x,y)
#endif /* SIMULATOR */
extern void lcd_data (int data);
extern void lcd_instruction (int instruction);
extern void lcd_zero (int length);
extern void lcd_fill (int data,int length);
extern void lcd_copy (void *data,int count);
#ifdef HAVE_LCD_CHARCELLS
extern void lcd_puts (char const *string);
extern void lcd_putns (char const *string,int n);
extern void lcd_putc (int character);
extern void lcd_puthex (unsigned int value,int digits);
extern void lcd_pattern (int which,char const *pattern,int count);
static inline void lcd_goto (int x,int y)
{ lcd_instruction (LCD_CURSOR(x,y)); }
#endif
/*** BACKLIGHT ***/
static inline void lcd_toggle_backlight (void)
{ toggle_bit (LCD_BL,PAIOR); }
static inline void lcd_turn_on_backlight (void)
{ set_bit (LCD_BL,PAIOR); }
static inline void lcd_turn_off_backlight (void)
{ clear_bit (LCD_BL,PAIOR); }
/*** ICONS ***/
#endif
Reference in a new issue View git blame Copy permalink