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authorPavel Pisa <pisa@cmp.felk.cvut.cz>2019-06-28 13:13:37 +0200
committerPavel Pisa <pisa@cmp.felk.cvut.cz>2019-06-28 13:13:37 +0200
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Document frame-buffer and LCD display emulation.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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@@ -192,6 +192,16 @@ other words writable which control color of RGB LED 1 and 2
#define SPILED_REG_KNOBS_8BIT_o 0x024
```
+The simple 16-bit per pixel (RGB565) framebuffer and LCD display
+are implemented. The framebuffer is mapped into range starting
+at `LCD_FB_START` address. The display size is 480 x 320 pixel.
+Pixel format RGB565 expect red component in bits 11 .. 15, green
+component in bits 5 .. 10 and blue component in bits 0 .. 4.
+```
+#define LCD_FB_START 0xffe00000
+#define LCD_FB_END 0xffe4afff
+```
+
Interrupts and Coprocessor 0 Support
------------------------------------