{{:electronic_assembly.png}}

This driver supports the graphic displays made by
[[http://www.lcd-module.de/eng/rs232/rs232.htm#Grafikeinheiten|Electronic Assembly]]. These 
display units are controlled by a serial RS-232 interface and are available from 120x32 to 
240x128.

The driver should support different models of this series, but at the moment
only some are tested and verified to work. Also some features like GPI which is
available on some models are not yet implemented.

|**Display unit**|**Supported**|**Not implemented features**|
|GE120-5NV24|OK|full supported|
|GE128-6N9V24|unknown|backlight|
|GE128-6N3V24|unknown|addressing,GPI|
|GE128-7KV24|unknown|addressing,GPI|
|GE240-6KV24|unknown|addressing,GPI|
|GE240-6KCV24|unknown|addressing,GPI|
|GE240-7KV24|unknown|addressing,GPI|
|GE240-7KLWV24|unknown|addressing,GPI|
|GE240-6KLWV24|unknown|addressing,GPI|
|KIT120-5|OK|addressing,GPI|
|KIT129-6|OK|addressing,GPI|
|KIT160-6|unknown|addressing,GPI|
|KIT160-7|unknown|addressing,GPI|
|KIT240-6|OK|addressing,GPI|
|KIT240-7|OK|addressing,GPI|
|KIT320-8|unknown|addressing,GPI|

Please give any feedback about working models!

It might be necessary to put the UART to non-fifo Mode by

//setserial /dev/ttyS0 uart 16450//

if you are using lcd4linux as non-root User.

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===== Display Section =====

<code>
Display <name> {
    Driver    'EA232graphic'
    Model     <string>
    Port      <string>
    Speed     <number>
    Contrast  <number>
}
</code>


----


===== Parameters =====

|**Driver**|'EA232graphic'|
|**Model**|see below|
|**Font**|'6x8'|
|**Port**|serial device the display is attached to (e.g.'/dev/ttyS2')|
|**Speed**|the baud rate from the display must match this value|
|**Contrast**|initial contrast (0..x). Not supported by all displays|

----

===== Example =====

<code>
Display EA232graphic {
    Driver    'EA232graphic'
    Model     'GE120-5NV24'
    Font      '6x8'
    Port      '/dev/ttyS1'
    Speed     9600
    Contrast  8
}
</code>


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The driver supports different displays, which can be selected with the //Model// parameter:

|**GE120-5NV24**|120x32, 8 GPO, Contrast setting|
|**GE128-6N9V24**|128x64, Backlight control|
|**GE128-6N3V24**|128x64, 8 GPO/GPI|
|**GE128-7KV24**|128x128, 8 GPO/GPI|
|**GE240-6KV24**|240x64, 8 GPO/GPI|
|**GE240-6KCV24**|240x64, 8 GPO/GPI|
|**GE240-7KV24**|240x128, 8 GPO/GPI|
|**GE240-7KLWV24**|240x128, 8 GPO/GPI|
|**GE240-6KLWV24**|240x64, 8 GPO/GPI|
|**KIT120-5**|120x32, 5 GPO|
|**KIT129-6**|128x64, 8 GPO/GPI|
|**KIT160-6**|160x80, 8 GPO/GPI|
|**KIT160-7**|160x128, 8 GPO/GPI|
|**KIT240-6**|240x64, 8 GPO/GPI|
|**KIT240-7**|240x128, 8 GPO/GPI|
|**KIT320-8**|320x240, 8 GPO/GPI|

----

===== Plugins =====

The driver provides the following functions:

|LCD::contrast(n)|set the contrast to <n> (0..15)|
|LCD::GPO(n)|return the current state of GPO <n> (0..7)|
|LCD::GPO(n,v)|set the GPO <n> on (1) or off (0)|

----

===== Remarks =====

If the display units are used with low baud rate the output of lcd4linux has to
be checked for for "partial write" messages. This messages are an indicator for
too fast updates! 

Because the internal data buffer is very small it is recommended to connect the
handshake line RTS of the display unit.

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