The Direct I/O page of
MMIDE can also be used to test out an LCD display. In this example an
LCD display is interfaced to the first ten (Pins 1-10 from MMBasic's
perspective) and clicking the “Write” button in the 8-bit LCD
Applet will write the text string that is in the text box above the
button.
The LCD is wired as
follows:
Pin 1 (11 on the
connector) connects to the LCD data/control line.
Pin 2 connects to the
LCD enable line.
The LCS read/write line
is connected to ground. Ground and 5V power the LCD.
Pins 3-10 connect to
the LCD D0-D7 data lines.
Prior to writing the
text to the LCD, the applet writes the command sequence of &h33,
&h33, &h38, &h0C, &h01. The LCD data sheet will help
you understand the commands.
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