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c028ba39da
bug in pixmap.c that leaded to empty bars fixed name conflicts with X11 resolved git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@22 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
#
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# $Id: README.Drivers,v 1.2 2000/03/26 18:46:28 reinelt Exp $
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#
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How to write new display drivers for lcd4linux
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If you plan to write a new display driver for lcd4linux, you should follow
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this guidelines:
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* use Skeleton.c as a start point
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* create a new sourcefile <drivername>.c and add it to the bottom of Makefile.am
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* there's no need for a <drivername>.h
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* create one (or more) unique display names (your driver will be selected by
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this name in the 'Display'-line of lcd4linux.conf).
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* include "display.h" in your driver, to get the LCD structure and various
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BAR_ definitions
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* include "cfg.h" if you need to access settings in the config file.
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* create a LCD table at the bottom of your driver, and fill it with the
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appropriate values. Take care that you specify the correct bar capabilities
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of your display or driver!
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* edit display.c and create a reference to your LCD table:
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external LCD YourDriver[];
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* extend the FAMILY table in display.c with your driver:
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FAMILY Driver[] = {
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{ "Skeleton", Skeleton },
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{ "MatrixOrbital", MatrixOrbital },
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{ "YourFamily", YourDriver },
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{ "" }
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};
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* write the correspondig init(), clear(), put(), bar() and flush()-functions.
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There's no need to use a framebuffer and display its contents with the flush()-
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call (as in MatrixOrbital.c), you can directly write to the display in the put()-
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and bar()-functions, and use an empty flush()-function. But if you have a limited
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number of user-defined characters, and therefore you have to do some sort of
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'character reduction' or similar stuff, you will have to use a framebuffer and
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the flush()-call.
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