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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-04-24 00:27:11 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-04-24 00:27:11 +0000 |
commit | 81ce10304b19f41f9c918d25f97c98e6f0d6c9e5 (patch) | |
tree | 9bb7ba77610f3569024249dcdfb3a83151c685af /nuttx/ReleaseNotes | |
parent | 85d9df0abee0d1754bb66b4088f66d1f3fba49d1 (diff) | |
download | px4-nuttx-81ce10304b19f41f9c918d25f97c98e6f0d6c9e5.tar.gz px4-nuttx-81ce10304b19f41f9c918d25f97c98e6f0d6c9e5.tar.bz2 px4-nuttx-81ce10304b19f41f9c918d25f97c98e6f0d6c9e5.zip |
Prep for 5.4 releasenuttx-5.4
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2626 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/ReleaseNotes')
-rw-r--r-- | nuttx/ReleaseNotes | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/nuttx/ReleaseNotes b/nuttx/ReleaseNotes index 0b329f101..7618bc7d0 100644 --- a/nuttx/ReleaseNotes +++ b/nuttx/ReleaseNotes @@ -1199,3 +1199,30 @@ Two important bugfix was also included: * An important fix to the USB mass storage driver was contributed by David Hewson. * A serious error in the AT91SAM3U PIO handling was fixed. + +nuttx-5.4 +^^^^^^^^^ + +This is the 51st release of NuttX. This release includes one new, important +extension to th NX graphics system (See http://www.nuttx.org/NXGraphicsSubsystem.html). + +NX was develop a couple years back on hardware that supported only framebuffer +devices, that is, video hardware with video memory directly converts the memroy +content to video. However, most MCUs that NuttX focuses on do not support such +video memory; rather, that typically only support LCDs via parallel or serial +interfaces. + +This release of NuttX extends NX so that now renders directly to the LCD device +via its serial or parallel interface. No in-memory copy of the screen memory +need be maintained so this solution should also work in MCUs with very limited +SRAM. + +This initial release of this feature includes the verified NX extensions plus +a driver for the HX8347, 16-bit parallel LCD. This LCD supports 16-bit RGB +(5:6:5). + + + * include/nuttx/lcd.h - Defines an LCD interface. + * graphics/nxglib/fb and lcd - Support LCD and framebuffer rasterizers for NX. + * configs/sam3u-ek/src/up_lcd.c - LCD driver for LCD on SAM3U-EK development + board. |