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include/rom/lcd.h File Reference

ROM Interface: RCX LCD control. More...

Go to the source code of this file.

Defines

#define lcd_int(i)   lcd_number(i,sign,e0)
 display an integer in decimal

#define lcd_unsigned(u)   lcd_number(u,unsign,e0)
 display an unsigned value in decimal

#define lcd_clock(t)   lcd_number(t,unsign,e_2)
 display a clock.

#define lcd_digit(d)   lcd_number(d,digit,digit_comma)
 display a single digit right of the man symbol

#define ASMVOLATILE   __volatile__

Enumerations

enum  lcd_segment {
  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,
  dot_inv = 0x301A, battery_x = 0x301B, ir_half = 0x301C, ir_full = 0x301D,
  everything = 0x3020
}
 LCD segment codes. More...

enum  lcd_number_style { digit = 0x3017, sign = 0x3001, unsign = 0x301F }
 LCD number display styles. More...

enum  lcd_comma_style {
  digit_comma = 0x0000, e0 = 0x3002, e_1 = 0x3003, e_2 = 0x3004,
  e_3 = 0x3005
}
 LCD comma display styles. More...


Functions

void lcd_show (lcd_segment segment)
 show LCD segment

void lcd_hide (lcd_segment segment)
 hide LCD segment

void lcd_number (int i, lcd_number_style n, lcd_comma_style c)
 show number on LCD display

void lcd_clear (void)
 clear LCD display

Detailed Description

ROM Interface: RCX LCD control.

Author:
Markus L. Noga <markus@noga.de>
Warning:
If CONF_LCD_REFRESH is set in config.h, the kernel will refresh the display automatically every 100ms. Otherwise, display updates are realized exclusively by lcd_refresh().

Definition in file lcd.h.

Define Documentation

#define ASMVOLATILE   __volatile__
 

g++ warns about __asm__ __volatile__. we define the problem away. the CXX symbol is predefined in the Makefile

Todo:
(when move to g++ 3.x) determine if this is still the case and fix this if not...

Definition at line 150 of file lcd.h.

Referenced by lcd_clear(), lcd_hide(), and lcd_show().

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

display a clock.

passing an argument of 1015 will display 10.15

Definition at line 131 of file lcd.h.

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

display a single digit right of the man symbol

Definition at line 134 of file lcd.h.

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

display an integer in decimal

Definition at line 123 of file lcd.h.

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

display an unsigned value in decimal

Definition at line 126 of file lcd.h.

Enumeration Type Documentation

enum lcd_comma_style
 

LCD comma display styles.

Enumeration values:
digit_comma  single digit on the right
e0  whole
e_1  10ths
e_2  100ths
e_3  1000ths, problematic with negatives

Definition at line 111 of file lcd.h.

enum lcd_number_style
 

LCD number display styles.

note: signed and unsigned are taken by the C programming language

Enumeration values:
digit  single digit on the right
sign  signed, no leading zeros
unsign  unsigned, 0 displayed as 0000

Definition at line 99 of file lcd.h.

enum lcd_segment
 

LCD segment codes.

these are not to be confused with the codes defined in direct-lcd.h

circle and dot codes cycle. cycle state is preserved on powerdown.

each dot code should be invoked six times before using the other. mixing them will result in strange behaviour.

Enumeration values:
man_stand 
man_run 
s1_select 
s1_active 
s2_select 
s2_active 
s3_select 
s3_active 
a_select 
a_left 
a_right 
b_select 
b_left 
b_right 
c_select 
c_left 
c_right 
unknown_1  seemingly without effect. cycle reset?
circle  0..3 quarters: add one. 4 quarters: reset
dot  0..4 dots: add a dot. 5 dots: reset
dot_inv  0 dots: show 5. 1..4 dots: subtract one
battery_x 
ir_half 
ir_full  the IR display values are mutually exclusive.
everything  the IR display values are mutually exclusive.

Definition at line 53 of file lcd.h.

Function Documentation

void lcd_clear (  void   )  [inline]
 

clear LCD display

Definition at line 191 of file lcd.h.

References ASMVOLATILE.

void lcd_hide (  lcd_segment  segment  )  [inline]
 

hide LCD segment

Parameters:
segment segment to hide

Definition at line 171 of file lcd.h.

References ASMVOLATILE.

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

show number on LCD display

Parameters:
i the number
n a number style
c a comma style

void lcd_show (  lcd_segment  segment  )  [inline]
 

show LCD segment

Parameters:
segment segment to show

Definition at line 156 of file lcd.h.

References ASMVOLATILE.

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Original code copyright 1998-2002 by the authors.
Generated on Mon Feb 16 21:01:55 2004 for brickOS C by doxygen 1.3.5