Matrix Orbital LCD/VFD Legacy - Manual (Page 27)

Command Syntax Notes
Draw vertical bar graph FE 3D [col][length]
254 61 [col][length]
254 ’=’ [col][length]
Draws a vertical bar graph at column
[col] of length [length]. Length is
measured in pixels (0x00 to 0x14).
User must first use the ’v’ or ’s’
command to initialize characters.
Draw horizontal bar graph FE 7C [c][r][d][length]
254 124 [c][r][d][length]
254 ’|’ [c][r][d][length]
Draws a horizontal bar graph start-
ing at column [c] on row [r] with di-
rection [d] (0 is right, 1 is left) of
length [length]. Length is measured
in pixels (0x00 to 0x64 if starting in
column 1). User must first use the
’h’ command to initialize characters.
Initialize large digits FE 6E
254 110
254 ’n’
Initializes the user character set to
make large digits.
Place large digits FE 23 [col] [digit]
254 35 [col] [digit]
254 ’#’ [col] [digit]
Place large digit number [digit] in
column [col] of the display. Cursor
moves to bottom right of large digit.
[digit] is 0x00 to 0x09, [col] is 0x01
to 0x12 (i.e. 1 to 18 decimal).
6.6 Miscellaneous Commands
Table 18: Miscellaneous Commands
Command Syntax Default Notes
Clear display FE 58
254 88
254 ’X’
n/a Clears screen of
text and graphics,
places text cursor
at top left.
Set contrast FE 50 [contrast] 254 80
[contrast] 254 ’P’ [con-
trast]
0x80 128 Sets display con-
trast. Compen-
sates for viewing
angle. Contrast
is a value between
0 and 255 (hex 0
to FF). Larger =
darker.
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