Programming Arduino Getting Started with Sketches

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, then the sketch clears the whole
display, and if the character is a 
/
, the sketch moves to the second line. Otherwise, the
sketch simply displays the character at the current cursor position using 
write
. The
function 
write
is like 
print
, but it prints only a single character rather than a string of
characters.
Using the Display
Try out sketch 9-01 by uploading it to the board and then attaching the shield. Note that
you should always unplug the Arduino board so that it is off before you plug in a shield.
Open up the Serial Monitor and try typing in the text shown in 
Figure 9-3
.

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Figure 9-3
Sending commands to the display
Other LCD Library Functions
In addition to the functions that you have used in this example, there are a number of other
functions that you can use:
• home
is the same as 
setCursor(0,0)
: it moves the cursor to top-left.
• cursor
displays a cursor.
• noCursor
specifies not to display a cursor.
• blink
makes the cursor blink.
• noBlink
stops the cursor from blinking.
• noDisplay
turns off the display without removing the content.
• display
turns the display back on after 
noDisplay
.
• scrollDisplayLeft
moves all the text on the display one character position to the left.
• scrollDisplayRight
moves all the text on the display one character position to the right.
• autoscroll
activates a mode in which, as new characters are added at the cursor, the
existing text is pushed in the direction determined by the functions 
leftToRight
and