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lcd.h File Reference

ROM LCD control. More...

Defines

• #define lcd_int (i)

  display an integer in decimal.

• #define lcd_unsigned (u)

  display an unsigned value in decimal.

• #define lcd_clock (t)

  display a clock. More...

• #define lcd_digit (d)

  display a single digit right of the man symbol.

Enumerations

• enum lcd_segment { 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, circle, dot, dot_inv, battery_x, ir_half, ir_full, everything }

  LCD segment codes. More...

• enum lcd_number_style { digit, sign, unsign }

  LCD number display styles. More...

• enum lcd_comma_style { digit_comma, e0, e_1, e_2, e_3 }

  LCD comma display styles. More...

Functions

• void lcd_show (lcd_segment segment)

  show LCD segment. More...

• void lcd_hide (lcd_segment segment)

  hide LCD segment. More...

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

  show number on LCD display. More...

• void lcd_clear (void)

  clear LCD display.

• void lcd_refresh (void)

  show LCD display contents to the world. More...

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Detailed Description

ROM LCD control.

Author(s):

Markus L. Noga <noga@inrialpes.fr>

Warning:

Display updates are realized exclusively by lcd_refresh()

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Define Documentation

#define lcd_clock(t)

display a clock.

passing an argument of 1015 will display 10.15

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Enumeration Type Documentation

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:

• 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.

• ir_half

  the IR display values are mutually exclusive.

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.

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.

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Function Documentation

void lcd_show (lcd_segment segment)

show LCD segment.

Parameters:

segment - segment to show

void lcd_hide (lcd_segment segment)

hide LCD segment.

Parameters:

segment - segment to hide

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_refresh (void)

show LCD display contents to the world.

display updates are realized exclusively by calling this function.

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-0.1.7 is released under Mozilla Public License. Original code © 1998-1999 by Markus L. Noga.