Matrix Orbital GLK24064-25 Legacy - Manual (Page 4)

GLK24064-25 rev. 06 4
1. Introduction
Your GLK24064-25 has the following features:
! 240 x 64 pixel graphics display
! text display using built-in or user-supplied fonts
! adjustable contrast
! backlighting
! keypad interface
! RS-232 or I
2 C communications
1.1 What it Does
The GLK24064-25 is designed as the display unit for an associated controller. The controller may be
anything from a single board, special purpose microcontroller to a PC, depending on the application. This
controller is responsible for what you see on the screen of the GLK24064-25.
The GLK24064-25 provides a simple command structure to allow both text and graphics to be transferred
to the screen. Text fonts (and graphics, if desired) are stored in the GLK24064-25's flash ROM and may be
regarded as "permanent" in that they survive power-off periods and don't change until explicitly
reprogrammed.
The screen is backlit for low-light situations. Backlighting may be turned on or off under program control.
Contrast is adjustable to compensate for differing lighting conditions and viewing angles.
1.2 What it Does Not Do
Since the GLK24064-25 is intended to be used with a controller, it does not have any built-in text editing
functions. If you input a stream of ASCII characters they will be displayed, but the CR, LF, backspace, etc.
will be ignored. If your application needs these functions, they must be provided by the software in your
controller, which can issue the appropriate positioning commands to the GLK24064-25.
1.3 Keypad Interface
The keypad interface takes row/column input and converts it to ASCII characters, which are delivered out
the RS-232 or I
2 C port to the associated controller. Note that the keypad is not used to directly control any
aspect of the operation of the GLK24064-25, which acts simply as a matrix to serial converter. If you want
to use the keypad to control the GLK24064-25 display you must program your controller accordingly.
1.4 mogd.exe
Matrix-Orbital has developed an interface program which exercises all the features of the GLK24064-25. It
is also used to manage font and graphics downloads. The program, called "mogd.exe", is provided on CD
and our website.
To install mogd.exe follow these steps:
1. Insert the Matrix Orbital CD-ROM into your CD drive.
2. Locate the file "mogd.zip" (should be in the Download directory).
3. Unzip mogd.zip to a temporary directory, using a program such as Winzip, Pkzip, etc.
4. Double click on "setup.exe".
5. Follow the instructions on the screen to complete the installation.
After installation is complete there will be a Matrix Orbital entry under Programs in your Start Menu. Click
on this entry to run mogd.exe.