28 lines
1.4 KiB
Plaintext
28 lines
1.4 KiB
Plaintext
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This driver can be used for the "Frame Reader IP Core" that comes with the "Video and Image Processing Suite" package
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from Altera/Intel/Quartus.
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This driver takes advantage of the double buffering feature offered by the "Frame Reader IP Core". The following commands
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can be used through the gdispControl() API to manage the two frame buffers:
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gdispControl(GDISP_CONTROL_BUFFERS_ENABLE, 0); // Enabel the two framebuffers (Disabled by default)
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gdispControl(GDISP_CONTROL_BUFFERS_DISABLE, 0); // Disable the two framebuffers (Disabled by default)
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gdispControl(GDISP_CONTROL_BUFFERS_SWAP, 0); // Swap the framebuffers (if enabled)
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The double buffering is taken care of completely by the driver. It sets the framebuffer pointers correctly so that it's
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transparent to the application. There's no need to handle the two framebuffers manually through the multiple displays
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support offered by uGFX. Using GDISP_CONTROL_BUFFERS_SWAP will swap the framebuffers on the actual hardware as well
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as swap the framebuffer pointers for the default GDisplay to draw to the other framebuffer.
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To use this driver:
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1. Add in your gfxconf.h:
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a) #define GFX_USE_GDISP TRUE
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2. To your makefile add the following lines:
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include $(GFXLIB)/gfx.mk
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include $(GFXLIB)/drivers/gdisp/AlteraFramereader/driver.mk
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3. Add a board_alteraframereader.h to you project directory (or board directory)
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base on one of the templates found in this drivers directory.
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