{{:Trefon-Logo.png}}

This driver supports the USB LCD's made by [[http://www.trefon.de|TREFON electronic GmbH]].

There are several different LCD types from TREFON; at the moment only the 16x2 display is tested and supported. Other displays may follow.

LCD4Linux communicates with these displays with libusb. libusb support (and therefore this driver) is disabled if //configure// cannot find the file //usb.h//. You need to install //libusb-dev// or something similar (depends on your distribution).

Power for the display will be supplied by USB. Backlight can be controlled per software.

{{:trefon1.png}}
{{:trefon2.png}}
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===== Display Section =====

<code>
Display <name> {
    Driver    'TREFON'
    Size      <string>
    Backlight <0|1>
    asc255bug <0|1>
    Icons     <number>
}
</code>


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===== Parameters: =====

|**Driver**|'TREFON'|
|**Size**|<columns>x<rows> e.g. "16x2"|
|**Backlight**|initial backlight state, 0 = off, 1 = on|
|**asc255bug**|set to 1 if you don't get solid blocks in bars, but an inverted P (the //Portishead syndrome// :-)|
|**Icons**|Number of user-defined chars reserved for Icons (default: 0)|

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===== Plugins: =====

The driver provides the following functions:

|**LCD::Backlight(n)**|sets the display backlight (0|1)|

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===== Example =====

<code>
Display Trefon_16x2 {
    Driver   'TREFON'
    Size     '16x2'
    Backlight 1
    asc255bug 0
    Icons     1
}
</code>


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