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Figure 7: Communication and 5V Power Cable

Figure 8: 4x4 Keypad

1.3

Features

122 x 32 pixel graphics display

Selectable communication protocol, Serial at RS-232 or TTL Levels or I

2

C

Two 5V - 20mA General Purpose Outputs

16 KB memory for fonts and bitmaps

Lightning fast communication speeds, up to 115 kbps for RS-232 and 100 kbps for I

2

C

Adjustable contrast and backlight brightness

Matrix Orbital

GLK12232-25-SM

3

Summary of Contents for GLK12232-25-SM

Page 1: ...ss mainly focus on the distribution of electronic components Line cards we deal with include Microchip ALPS ROHM Xilinx Pulse ON Everlight and Freescale Main products comprise IC Modules Potentiometer...

Page 2: ...GLK12232 25 SM Technical Manual Revision 2 1...

Page 3: ...nicating 12 3 3 The display module is communicating however text cannot be displayed 13 3 4 There is a problem uploading fonts or bitmaps 13 4 Communications 13 4 1 Introduction 13 4 1 1 I2C Communica...

Page 4: ...ne 29 8 6 Draw a Rectangle 30 8 7 Drawing a Solid Rectangle 30 8 8 Initializing a Bar Graph 31 8 9 Drawing a Bar Graph 31 8 10 Initializing a Strip Chart 32 8 11 Shifting a Strip Chart 33 9 General Pu...

Page 5: ...6 Filesystem Upload 48 12 7 Downloading a File 48 12 8 Moving a File 49 13 Data Security 49 13 1 Introduction 49 13 2 Set Remember 50 13 3 Data Lock 50 13 4 Set and Save Data Lock 52 13 5 Dump the Fi...

Page 6: ...16 1 Specifications 61 16 1 1 Environmental 61 16 1 2 Electrical 62 16 2 Optical Characteristics 62 16 3 Physical Layout 62 16 4 Ordering Information 64 16 5 Definitions 64 16 6 Contacting Matrix Orbi...

Page 7: ...r enhanced by an intuitive command structure to allow display settings such as backlight brightness contrast and baud rate to be software controlled Additionally text and fonts may be uploaded to the...

Page 8: ...nd running You will find these accessories and others on our e commerce website at http www matrixorbital com To contact a sales associate see Section 16 6 for contact information Figure 3 5V Power Ca...

Page 9: ...y Selectable communication protocol Serial at RS 232 or TTL Levels or I2C Two 5V 20mA General Purpose Outputs 16 KB memory for fonts and bitmaps Lightning fast communication speeds up to 115 kbps for...

Page 10: ...onnect the power connector end of the Communication and 5V Power cable into the PC power supply you will have to open your computer case if you do not have a separate power supply 3 Connect the power...

Page 11: ...u Click on the Mogd Sharp entry to run the program Be sure to check the information selected in the configuration panel the first time MOGD is run Once this information is entered correctly the progra...

Page 12: ...ter Figure 10 GLK12232 25 SM Table 1 Hardware information 1 Power Data Connector 5 Protocol Select Jumpers 2 Floppy Power Connector 6 Filesystem Lock Jumper 3 Keypad Interface Connector 7 Manual Overr...

Page 13: ...SM standard or wide voltage options the users have two options for connections power and data connections using the Power Data Connector of the GLK12232 25 SM supply Vcc with the proper voltage power...

Page 14: ...y module between RS 232 TTL and I2 C protocols As a default the jumpers are set to RS 232 mode with zero ohm resistors on the 232 jumpers In order to place the display module in I2C mode you must firs...

Page 15: ...ow the key presses to remain in the buffer so that they may be polled The character that is associated with each key press may also be altered using the Assign Key Codes command for more detailed info...

Page 16: ...be generated 2 5 Manual Override The Manual Override is provided to allow the GLK12232 25 SM to be temporarily reset to some of the factory defaults This can be particularly helpful if the display mod...

Page 17: ...aved 2 6 Filesystem Lock Jumper The Filesystem Lock Jumper allows you to lock the filesystem on the GLK12232 25 SM so that no fonts or bitmaps can be either written or deleted from the on board memory...

Page 18: ...upply The last step will be to check the Power Data Connector on the GLK12232 25 SM If the Power Data Connector has become loose or you are unable to resolve the issue please contact Matrix Orbital se...

Page 19: ...tting that will work in most environments is 128 NOTE Optimal contrast settings may vary according to factors such as temperature view ing angle and lighting conditions 3 4 There is a problem uploadin...

Page 20: ...7 bit address of 45 100 0101 Matrix Orbital s GLK12232 25 SM would describe this Phillips I2C address as 8A 1000 1010 The read address would be 8B 1000 1011 The unit does not respond to general call a...

Page 21: ...low to high 4 1 3 Serial Communication In addition to being able to communicate via I2C the GLK12232 25 SM communicates natively through the RS 232 protocol at at a default baud rate of 19 200 bps and...

Page 22: ...ection of the value for the buffer full should be considered very carefully This is a critical aspect to be able to use this feature to it s full potential When using a host system or PC which contain...

Page 23: ...ess must be an even number and the read address is automatically set to one higher For example if the I2C write address is set to 0x50 then the read address is 0x51 NOTE The change in address is immed...

Page 24: ...OTE This command is not available in I2C mode Remembered Always Default 19 200 bps 4 6 Setting a Non Standard Baud Rate Syntax Hexadecimal 0xFE 0xA4 speed Decimal 254 164 speed Parameters Parameter Le...

Page 25: ...he speed result backwards into the formula to receive the actual baud rate Baud CrystalSpeed 8 speed 1 The actual baud rate must be within 3 of the intended baud rate for the device to communicate NOT...

Page 26: ...n bitmap form Figure 17 below illus trates the bit pattern for the h i and j bitmap data Figure 17 Bitmaps for h i and j Second you may begin to create the font file starting with the header The heade...

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