lcd.h

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/*
 *  The contents of this file are subject to the Mozilla Public License
 *  Version 1.0 (the "License"); you may not use this file except in
 *  compliance with the License. You may obtain a copy of the License
 *  at http://www.mozilla.org/MPL/
 *
 *  Software distributed under the License is distributed on an "AS IS"
 *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 *  the License for the specific language governing rights and
 *  limitations under the License.
 *
 *  The Original Code is legOS code, released October 17, 1999.
 *
 *  The Initial Developer of the Original Code is Markus L. Noga.
 *  Portions created by Markus L. Noga are Copyright (C) 1999
 *  Markus L. Noga. All Rights Reserved.
 *
 *  Contributor(s): Markus L. Noga <markus@noga.de>
 */

#ifndef __rom_lcd_h__
#define __rom_lcd_h__

#ifdef  __cplusplus
extern "C" {
#endif

//
// Definitions
//


typedef enum {
  man_stand = 0x3006,
  man_run   = 0x3007,

  s1_select = 0x3008,
  s1_active = 0x3009,

  s2_select = 0x300A,
  s2_active = 0x300B,

  s3_select = 0x300C,
  s3_active = 0x300D,

  a_select  = 0x300E,
  a_left    = 0x300F,
  a_right   = 0x3010,

  b_select  = 0x3011,
  b_left    = 0x3012,
  b_right   = 0x3013,

  c_select  = 0x3014,
  c_left    = 0x3015,
  c_right   = 0x3016,

  unknown_1 = 0x3017,           

  circle    = 0x3018,           

  dot       = 0x3019,           
                                // dots are added on the right.
  dot_inv   = 0x301A,           
                                // dots are removed on the left

  battery_x = 0x301B,

  ir_half   = 0x301C,           
  ir_full   = 0x301D,           

  everything= 0x3020

} lcd_segment;


typedef enum {
  digit  = 0x3017,              
                                // works only with comma_style digit

  sign   = 0x3001,              
  unsign = 0x301F               

} lcd_number_style;

/*
 */
typedef enum {
  digit_comma = 0x0000,         
                                // works only with number_style digit

  e0  = 0x3002,                 
  e_1 = 0x3003,                 
  e_2 = 0x3004,                 
  e_3 = 0x3005,                 

} lcd_comma_style;              // lcd display comma style

#define lcd_int(i)      lcd_number(i,sign,e0)

#define lcd_unsigned(u) lcd_number(u,unsign,e0)


#define lcd_clock(t)    lcd_number(t,unsign,e_2)

#define lcd_digit(d)    lcd_number(d,digit,digit_comma)

//
// Functions
//

#ifdef CXX
#define ASMVOLATILE
#else
#define ASMVOLATILE __volatile__
#endif


extern inline void lcd_show(lcd_segment segment)
{
  __asm__ ASMVOLATILE(
                       "push r6\n"
                       "mov.w %0,r6\n"
                       "jsr @lcd_show\n"
                       "pop r6\n"
                       :        // outputs
                       :"r"(segment)    // inputs
  );
}


extern inline void lcd_hide(lcd_segment segment)
{
  __asm__ ASMVOLATILE(
                       "push r6\n"
                       "mov.w %0,r6\n"
                       "jsr @lcd_hide\n"
                       "pop r6\n"
                       :        // outputs
                       :"r"(segment)    // inputs
  );
}


extern void lcd_number(int i, lcd_number_style n, lcd_comma_style c);

extern inline void lcd_clear(void)
{
  __asm__ ASMVOLATILE(
                       "push r6\n"
                       "jsr @lcd_clear\n"
                       "pop r6\n"
  );
}

#ifdef  __cplusplus
}
#endif

#endif // __rom_lcd_h__

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