> > I thought of doing something like a lookup table (with DT "String =20
> > text..." etc)
>=20

As a sidenote...

When I am putting text on a display I also use characters in the range 0x80=
 -=20
0x9f as controlcodes or commands to the display which also goes into the=20
circular LCD buffert. The LCD buffert is then emptied one character at a ti=
me=20
in the background and sent to the display at a pace it can handle. Whenever=
 a=20
controlcode is found in the buffert, its meaning is converted to one or mor=
e=20
commands to the display or other higher level operations.

The controlcodes could be:

LCD_CMD_CLR          Clear screen=20
LCD_CMD_CLREOL       Clear to end of line
LCD_CMD_HOME_2ND_ROW Move to (predefined) position
LCD_CMD_CUR_OFF      Turn cursor off
LCD_CMD_CUR_ON       Turn cursor on
LCD_CMD_SAVE_POS     Save cursor state and position
LCD_CMD_RESTORE_POS  Restore cursor state and position    =20
LCD_CMD_AD_POS       Position for AD value follows
LCD_END_STR          End of string
LCD_CMD_MOVE_TO_AD   Move cursor to previously defined pos

Can't use 0 as end of string since it is used in user character RAM bytes a=
nd a=20
user character itself.

This way I can update a value which is constantly changing at one position =
of=20
the display while at the same time I can handle a user inputting a value at=
=20
another position of the display and define the string behaviour in jumptabl=
es:

Some example strings then could be:

string_welcome
  retw     LCD_CMD_CLR,'*** HCS100 ***'
  retw     LCD_CMD_HOME_2ND_ROW,'V1.04 100522',LCD_END_STR
string_write_AD_start
  retw     LCD_CMD_SAVE_POS,LCD_CMD_CUR_OFF
  retw     LCD_CMD_MOVE_TO_AD,LCD_END_STR
string_write_AD_end
  retw     0x00,LCD_CMD_CLREOL,LCD_CMD_RESTORE_POS,LCD_END_STR

Where 0x00 is a user character for "degrees C" for example.


/Ruben




=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124, 200 39 Malm=F6, Sweden
TEL INT +46 40142078
FAX INT +46 40947388
ruben@pp.sbbs.se
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D

--=20
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