95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.io/license.html
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*/
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/**
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* Note: this implementation makes a number of design choices...
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* 1/ We are using the macro definitions for eCos framebuffer driver. If you want to use the
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* function's instead you could use the g->board variable to store your cyg_fb pointer.
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* 2/ We assume the initialisation succeeds. It is probably a fatal error if it doesn't.
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* 3/ We hard-code in this file the pixel format, whether flushing is required and the FRAMEBUF device.
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* Please adjust them for your hardware.
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*/
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// Set this to your frame buffer pixel format.
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#ifndef GDISP_LLD_PIXELFORMAT
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#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_RGB565
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#endif
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// Uncomment this if your frame buffer device requires flushing ("Synch" in eCos speak)
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#define GDISP_HARDWARE_FLUSH GFXON
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#ifdef GDISP_DRIVER_VMT
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#include <cyg/io/framebuf.h>
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// SET THIS HERE!!!
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// This must also match the pixel format above
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#define FRAMEBUF fb0
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static void board_init(GDisplay *g, fbInfo *fbi) {
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// Initialize the frame buffer device - we assume everything is going to succeed.
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CYG_FB_ON(FRAMEBUF);
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#if (CYG_FB_FLAGS0(FRAMEBUF) & CYG_FB_FLAGS0_MUST_BE_ON)
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CYG_FB_FILL_BLOCK(FRAMEBUF, 0, 0, CYG_FB_WIDTH(FRAMEBUF), CYG_FB_HEIGHT(FRAMEBUF), CYG_FB_MAKE_COLOUR(FRAMEBUF, 0, 0, 0));
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#endif
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// Set the details of the frame buffer
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#ifdef CYGHWR_IO_FRAMEBUF_FUNCTIONALITY_VIEWPORT
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g->g.Width = CYG_FB_VIEWPORT_WIDTH(FRAMEBUF);
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g->g.Height = CYG_FB_VIEWPORT_HEIGHT(FRAMEBUF);
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#else
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g->g.Width = CYG_FB_WIDTH(FRAMEBUF);
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g->g.Height = CYG_FB_HEIGHT(FRAMEBUF);
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#endif
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g->g.Backlight = 100;
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g->g.Contrast = 50;
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fbi->linelen = CYG_FB_STRIDE(FRAMEBUF); // bytes per row
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fbi->pixels = CYG_FB_BASE(FRAMEBUF); // pointer to the memory frame buffer
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}
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#if GDISP_HARDWARE_FLUSH
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static void board_flush(GDisplay *g) {
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(void) g;
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// You might want to replace CYG_FB_UPDATE_NOW with CYG_FB_UPDATE_VERTICAL_RETRACE
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// if you are not using uGFX's auto flush or timer flush mechanisms and frame synchronisation
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// is important for your display.
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CYG_FB_SYNCH(FRAMEBUF, CYG_FB_UPDATE_NOW);
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}
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#endif
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#if GDISP_NEED_CONTROL
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static void board_backlight(GDisplay *g, gU8 percent) {
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(void) g;
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#if (CYG_FB_FLAGS0(FRAMEBUF) & CYG_FB_FLAGS0_BACKLIGHT)
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cyg_fb_ioctl_backlight backlight;
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size_t len = sizeof(cyg_fb_ioctl_backlight);
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if (CYG_FB_IOCTL(FRAMEBUF, CYG_FB_IOCTL_BACKLIGHT_GET, &backlight, &len) || !backlight.fbbl_max)
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return;
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if (backlight.fbbl_max == 1)
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backlight.fbbl_current = percent ? 1 : 0;
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else
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backlight.fbbl_current = (((gU32)percent)*backlight.fbbl_max)/100;
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CYG_FB_IOCTL(FRAMEBUF, CYG_FB_IOCTL_BACKLIGHT_SET, &backlight, &len);
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#endif
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}
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static void board_contrast(GDisplay *g, gU8 percent) {
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(void) g;
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(void) percent;
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}
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static void board_power(GDisplay *g, gPowermode pwr) {
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// Not implemented yet.
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(void) g;
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(void) pwr;
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}
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#endif
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#endif /* GDISP_DRIVER_VMT */
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