25 lines
1.2 KiB
Text
25 lines
1.2 KiB
Text
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GLCD now uses the GDISP low level drivers and fonts.
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To update your make to use this new version:
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Add the low level driver yo want to use to your make file. eg.
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include $(CHIBIOS)/os/halext/drivers/gdispTestStub/gdisp_lld.mk
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There some restrictions that GLCD places on your use of new features and on the capabilities
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of the low level driver.
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They are:
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1/ GLCD requires a driver that supports RGB565 pixel format. This is a
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limitation of the GLCD API. To update the API would create compatability
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issues with existing applications.
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2/ If you want to use the GLCD scroll or the GLCD read-pixel calls then your
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low level driver must support them. If it doesn't these calls will
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fail.
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3/ You cannot reduce the code size like in GDISP by defining macros to
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compile out code that you are not using.
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4/ Some of the new features of GDISP like right or center justified text are not
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supported as there is no equivelant API in GDISP.
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5/ There is no mechanism to send hardware specific commands to the low level driver
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such as commands to control the back-light.
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What it does do that GDISP currently doesn't:
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1/ Asynchronous multi-thread support.
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