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Finish framebuffer support

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2672 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2010-05-15 18:57:24 +00:00
parent 7c23ed0b1f
commit 210682a690
1 changed files with 2 additions and 1 deletions
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Documentation/NuttxPortingGuide.html
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@ -2548,12 +2548,13 @@ extern void up_ledoff(int led);
<code>CONFIG_P14201_FRAMEBUFFER</code>:
If defined, accesses will be performed using an in-memory copy of the OLEDs GDDRAM.
This cost of this buffer is 128 * 96 / 2 = 6Kb.
If this is defined, then the driver will be fully functioned.
If this is defined, then the driver will be fully functional.
If not, then it will have the following limitations:
<ul>
<li>Reading graphics memory cannot be supported, and</li>
<li>All pixel writes must be aligned to byte boundaries.</li>
</ul>
The latter limitation effectively reduces the 128x96 disply to 64x96.
</li>
</ul>