MESSAGE FORMATTING
173
•
The cursor row
position
is not
affected by the currently selected font. The
display always has 4 rows, so when writing with the large font, actually two rows
are written to: the current one and the one below it. You will need two ESC E
commands to step from one row to the next when using the large font.
•
The cursor column position
is
affected by the currently selected font. Therefore,
column 6 is 36 pixels from the left border only if you last selected the 6x8 font;
otherwise it could be 48 or 72 pixels from the left border.
6.1.2
Font Selection
ESC [ 0 m
Normal mode
ESC [ 7 m
Reverse mode
ESC # 4
Large font: subsequent characters are written on the current row and
the row below it using the 12x16 font which allows for two rows of
eight characters on the display.
ESC # 5
Normal font: subsequent characters are written using the 6x8 font,
which allows for four rows of sixteen characters on the display.
ESC # 7
Medium font: subsequent characters are written using the 8x8 font,
which allows for four rows of twelve characters on the display.
6.1.3
Clearing Display
ESC [ 0 K
From cursor position to end of line inclusive
ESC [ 1 K
From beginning of line to cursor position (not inclusive)
ESC [ 2 K
Entire line
ESC [ 0 J
From cursor position to end of display inclusive
ESC [ 1 J
From beginning of display to cursor position (not inclusive)
ESC [ 2 J
Entire display; moves cursor to upper left corner on display
6.1.4
LED and Beeper Control
ESC [ 0 q
Emit short High tone + short delay
ESC [ 1 q
Emit short Low tone + short delay
ESC [ 2 q
Emit long Low tone + short delay
ESC [ 3 q
Emit good read tone
ESC [ 4 q
Emit bad tx tone
ESC [ 5 q
Wait 100 ms
ESC [ 6 q
Turn on the green LED
ESC [ 7 q
Turn off the green LED
ESC [ 8 q
Turn on the red LED
ESC [ 9 q
Turn off the red LED
