Basic Micro Studio Syntax Manual

LCDREAD
Syntax
lcdread RS\ E\ D7\ D6\ D5\ D4 {,RW}, {cgram+} address,
[{modifi ers} expression1, ..., {modifi ers} expressionN]
Commands
• RS - is any expression, constant or variable that specifi es the I/O pin connected to the LCD’s
R/S pin.
• E - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
enable pin.
• D7 - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
data bit 7 pin.
• D6 - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
data bit 6 pin.
• D5 - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
data bit 5 pin.
• D4 - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
data bit 4 pin.
• RW - is any expression, constant or variable that specifi es an I/O pin connected to the LCD’s
read or write enable pin.
• Cgram - LCDREAD defaults to reading screen ram. CGRAM is an optional argument which
specifi es custom character ram (CGRAM). If CGRAM is used the LCDREAD command will return
data stored in the CGRAM and not SCRRAM.
• Address - specifi es what address to start the read at.
• Modifi ers - are any output modifi ers as shown in the modifi ers section of this manual. They are
used to format the out going data (Hex, Bin, Dec and so on).
• Expression - is any expression, constant or variable that specifi es data to be displayed to the
LCD screen.
Supported
• BA - Supported
• BAN - Supported
• BAP - Supported
• BAP40 - Supported
Description
The LCD commands are setup to work with the Hitachi HD44780 controller. This is probably one
of the most common text LCDs available. 1x16 all the way up to 4x40 size screens are supported.
Before using the LCDREAD command see LCDINIT command.
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