Status: New
Owner: ----
Labels: Type-Enhancement Priority-Medium
New issue 138 by jsuijs: request for custom char on lcd display
http://code.google.com/p/jallib/issues/detail?id=138
http://tech.groups.yahoo.com/group/jallist/message/29536
I would like to make a suggestion for the jallib
I've noticed that it's no longer possible in the newer jallib files to
define a
custom character for an lcd display.
It is however a feature that is common on most if not all lcd displays with
an
hd44780 compatible mcu
Up till now I've just updated the lcd_hd44780_common.jal file with the
following...
--
----------------------------------------------------------------------------
-- lcd_define- Create a custom character
--
----------------------------------------------------------------------------
-- The characters can be placed on position 0-7 of the character ram
--
-- pos: position of the character
-- str[]: array containing the custom character
--
-- (0xFF is a common pattern)
--
----------------------------------------------------------------------------
procedure lcd_define(byte in pos, byte in str[]) is
_lcd_write_command(LCD_SET_CGRAM_ADDRESS | ( pos << 3 ))
var word len = count(str)
var byte i
for len using i loop
_lcd_write_data( str[i])
end loop
end procedure
It comes from an older version of library files, so I'm not even the author
of
it.
HTH
Diego
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