04/12/11 version 1.0

Transcription

1 04/12/11 version 1.0 Assembly Manual and Hardware Description for the Universal Graphics Display Module Kit This document describes the physical assembly and operation of the new KibaCorp Universal Graphic Display Module. This display unit is configurable for use with either the 16 Bit Experimenter or the 32 bit Experimenter and represents the next generation of graphics capability for the Experimenter series. It is fully compatible with the earlier Graphic 128x64 kit used exclusively with the 16 bit Experimenter, and provides for the 32 bit Experimenter a fully integrated capability for use with Microchip s extensive graphics Library. In addition, the module provides an Arduino compatible hardware interface that allows the module to be used with that Microcontroller family. However no software driver for this option exists as of this writing. The module can be used as an add-on plug-in option to the 32 bit Experimenter board, or standalone for use directly on a Solderless breadboard. This option is selectable during assembly by connector placement and is dependent also on the software driver used. The module consists of a monochrome Graphics 102x64 LCD with multi-color backlight module that is mounted on a pre-assembled SMT daughterboard. The total assembly should take under 20 minutes; however, special attention needs to be given to the removal of protective covers and films on both the LCD display and backlight before final assembly. A soldering iron will be required to assemble the kit. Figure 1 Universal graphics Module

2 Universal Graphics Module Interface Description Pin Connector Function Microcontroller Reset Pushbutton (for 32bit only) otherwise available 1 JP1 as an additional pushbutton input 2 JP1 3.3V DC Power 4 JP1 GND out 1 JP3 CS (chip select for LCD) 2 JP3 reset control for display 3 JP3 CMD/Data control 4 JP3 Red back light control 5 JP3 red led control 1 JP4 green led control 2 JP4 green back light control 4 JP4 LCD SPI data out 6 JP4 LCD SPI Clock out 7 JP4 GND ( --additional not necessary if JP1 pin4 is used) Kits Contents The kits should contain the following: 1. (1) EADOGM102W-6 LCD Display package 2. (1) EALED39X41-GR Green, Red Backlight package 3. (2) Male 6 pin header 4. (1) Male 10 pin header 5. (1) Male 2 pin header 6. (1) Pushbutton 6. CD-ROM with Assembly Instructions, Code See attached figure (CD-ROM Not shown)

3 Figure 1 Kit Contents Graphics Module Assembly Remove the Backlight and LCD module from their perspective packages. Line them up side by side and you should get something like is shown in figure below. Both modules contain protective films that will need to be removed before final assembly. The final assembly will consist of the LCD display mounted on top of the Backlight module and then soldered together. Let s start with the Back Light module first. 1. Backlight -Step 1 Remove plastic cover from top of back light module. Remove the next layer of covering material from front of backlight it is marked with white tape around the edges. What you should be left with it is a final covering for light dispersion with black tape on top and bottom. Leave this covering you are done with the back light for now. Figure 2 Backlight with removed films 2. LCD Step 2 Let s now works the LCD module. Let s remove the front cover plastic protective film as shown.

4 Figure 3 LCD with front film removed 3. LCD Step 4 We is done with the front of the LCD, let flip it on it back as shown. 4. LCD Step 5 Remove the protective plastic cover from the back of the display as shown. Ok we are now done with the LCD display. Figure 4 back of LCD with back film removed 5. Stacking Assembly the of Graphics Kit You should now have the units completely remove of all protective covers and lined up side by side as shown Take the LCD unit and place it on top the backlight. The Pins of the LCD should align with the corresponding holes in the backlight. The assembly should now look like what shown here. We are not done. The units need to be soldered together. Before doing so make sure both units are flush with each other. This is important for two reasons Maximum light transfer from backlight to LCD Maximum extension of pins from bottom to enable plug-in to Solderless breadboard as a complete unit. Turn the unit upside down, again make sure the two modules are flush,-- and Apply solder to bottom pins. The final stacking is to solder the graphics unit to the PCB. The entire process is shown below. Figure 5 Stacking the assemblies

5 6. Final Assembly of the Graphics Kit (see figure 6) add the pushbutton and then the male headers. These must be soldered to the PCB. The male headers are inserted into the PCB from the bottom. Each of male headers has two possible positions. You can select either the inside rows or the outside rows but you must be consistent you can mix rows. If you choose the inside rows the module will work in stack up with the 32 bit Experimenter, if you choose the outside rows then the module will pluggable into a Solderless breadboard environment. Congratulations- your graphics Unit is complete! Integration and test you now need to integrate the module with your Micro experimenter of choice. For the 32 bit Experimenter stack up configuration this is easy just plug the module on to the 32 Bit Experimenter. For Solderless breadboard configuration you will need to run wiring between the module and the experimenter directly. Hookup diagrams and software is provided (see kit use and operations) Figure 6 ready for final assembly The Graphics Module Hardware Description The graphics display module is based on the EA (ELECTRONIC ASSEMBLY) DOGS Graphics series display technology. The specific display uses a pixel matrix of 102 horizontal by vertical 64, for a total graphic compliment of 6528 pixels. This is sufficient to handle the Microchip graphics Library. The display is designed for commercial hand-held devices, and it is extremely compact, with a large viewing area. As a +3.3VDC module, it is a good display system for use the 16 or 32 Bit Micro Experimenters. The display is EA DOGS102W-6 and is used with a selectable green, red back light. The EA LCD Display and EA Back light module are assembled as a single unit. The EA DOG102SW-6 display plugs in and sits on top of the EA LED39X41-GR back light. Both parts are soldered together as a complete display assembly. The graphic module board itself contains SMT components that are pre-assembled. The module itself comes as a kit. The only assembly requirement is to solder the display and backlight to the board, and headers. The board interface meets Arduino specification and so can be used with those specific microcontroller board sets; however, the driver software is configured to work only with the Microchip processors.

6 Hardware and Interfaces The EA DOGS102W-6 internal memory is organized as 8 pages of 102 bytes each for total of 816 bytes or 6528 bits. Each bit in the row corresponds to a unique column or X horizontal display pixel position. There are 64 rows, so selecting a row corresponds to a unique vertical Y position of the pixel on the display. Figure 4 is marked with the individual pixel addresses (X, Y) representing the four corners of the display of the pixel reference map. Setting or resetting a bit for a particular pixel will turn it on or off during display. Figure 7 EADOGS102W-6 Internal Display memory and pixel placement Control and writing to the display is handled through a Synchronous Peripheral Interface (SPI). The use of SPI really simplifies interconnection between the Experimenter and the Display. There are only a few control plus power and ground: CD for command/data, CS for chip select, /RST for reset, SPI command/data into the display, and SCK for transfer clock. A timing diagram for SPI is shown. The SPI Data is clocked 8 bits at a time. All communication between the Experimenter to the display is one way, in that only the Experimenter talks. The initialization of this LCD and the ability to write a pixel to this display is fully integrated in the Device Drivers are supplied with the demo software on the CD-ROM.

7 Figure 8 Module Schematic and SPI Kit Use and operations Kit use and operation is contained in the attached write-ups on CD-ROM. There is a graphics library and driver for use with the PIC32 microcontroller that is fully Microchip graphics library compliant. The library and driver associated with PIC24F (16 bit Experimenter) is custom developed by KibaCorp and is not Microchip library compliant. Depending on your experimenter choice the software library description and operations are contained in the following articles on the CD-ROM along with associated demo code. Using a 128x64 Bit graphics Module with the 16 bit Experimenter - this article described an earlier version of the kit that used a 128x64 display versus the 102x64 that is used in the current module. All operations are similar with following exceptions: o Display size is smaller (102 versus 128) o There is discrete control for red and green backlights o There are two user controlled LEDs o There is an pushbutton available for user operation ( used with 32 Experimenter when mounted on board as another reset) o A updated hook up diagram for use with the 16 Bit Experimenter is given in figure 9. This hookup is required for use with the demo code. o See figure 10 showing Module with 16 Bit Experimenter in Solderless bread board configuration.

8 Figure 9 16 Bit Experimenter and Module Hookups

9 Figure 10 Module in Solderless breadboard configuration with 16 Bit Experimenter Using a Graphics library with the 32 bit Experimenter - see figure below illustrating the Module operation with Experimenter 32 using a board mount configuration. Hook up diagram is not required as all connections are shown in Universal Module Interface description shown earlier.

10 Figure 11 Module in "stacked" configuration with 32 Bit Experimenter KibaCorp believes in total customer support. Your success and satisfaction is also ours. Please feel free to drop us a line or discuss any issues you may have in using this product at