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---------------------------------------------------------------------
GraphLCD driver library
The serdisp driver
---------------------------------------------------------------------
Description
-----------
The serdisp driver supports LC displays that are supported by
serdisplib (http://serdisplib.sourceforge.net).
Configuration Parameters
------------------------
The serdisp driver supports the following parameters in config file:
Controller
Select the controller your LCD uses named like in serdisplib.
Possible values: See README in serdisplib package
Device
Instead of using the direct output via port address (see Port), you
can use the parport device (/dev/parportX). The advantage over the
direct output via port address is that this works for non-root users
also. But it's a little bit slower. The modules ppdev.o, parport.o
and parport_pc.o must be loaded or compiled into the kernel.
Port
Sets the port address of the parallel port. If this parameter is not
given, 0x378 is used. To use this direct output, the program that
uses the driver library has to be started with user 'root'.
Width
Sets the horizontal size of the display. If this parameter is not
given, a default value according to the selected controller is used.
Height
Sets the vertical size of the display. If this parameter is not
given, a default value according to the selected controller is used.
UpsideDown
Rotates the display output by 180 degrees. This might be useful, if
the LCD is mounted upside-down.
Possible values: 'yes', 'no'
Default value: 'no'
Invert
Inverts the display.
Possible values: 'yes', 'no'
Default value: 'no'
Contrast
Sets the contrast of your display.
Possible values: 0 <= x <= 10
Default value: 5
Backlight
Switches the backlight of your display on and off.
Possible values: 'yes', 'no'
Default value: 'yes'
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