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6051f2852767a617f2a66399a9c07e94043ca95a
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Anton Staaf 6051f28527 Discovery: Add Forward and Loopback USART configurations 
Add example uses of the multi USART driver with DMA transmission and interrupt
based reception.  USART1 is setup as a loopback device, it just echo's any
characters received.  USART4 is forwarded over USB.

Also fix the alternate function mappings for USART3 and USART4, and add
comments for each section of board.c.

Signed-off-by: Anton Staaf <robotboy@chromium.org>

BRANCH=None
BUG=None
TEST=make buildall -j
     Crosswire USART1 to USART4 and cut and paste chunks of text over USB

Change-Id: I79170c78e61328caf8067ae8db8810db38880839
Reviewed-on: https://chromium-review.googlesource.com/287195
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
2015-07-21 22:36:28 +00:00
board
Discovery: Add Forward and Loopback USART configurations
2015-07-21 22:36:28 +00:00
chip
USART: Add DMA based transmitter
2015-07-21 18:30:40 +00:00
common
ryu: remove P4/P5 code leftover
2015-07-21 19:56:24 +00:00
core
mec1322: heavysleep in idle task and console deepsleep
2015-07-17 18:09:55 +00:00
docs
CCD: Add documentation
2015-05-07 00:00:47 +00:00
driver
Driver: OPT3001: Add TI OPT3001 light sensor driver
2015-07-21 01:34:27 +00:00
extra
Cr50: Add extra/sps_errs/ test program
2015-07-11 00:28:11 +00:00
include
Driver: OPT3001: Add TI OPT3001 light sensor driver
2015-07-21 01:34:27 +00:00
power
Skylake: Add G3 sleep mode support
2015-07-21 01:34:21 +00:00
test
ryu: remove P4/P5 code leftover
2015-07-21 19:56:24 +00:00
util
Remove ryu P4/P5 support
2015-07-20 23:35:44 +00:00
.gitignore
Update .gitignore for new private repo
2015-07-10 23:12:36 +00:00
COMMIT-QUEUE.ini
Ignore failures in HWTest and VMTest in the commit queue.
2013-11-01 14:08:36 +00:00
LICENSE
Add LICENSE file to project
2012-05-11 09:11:52 -07:00
Makefile
build-infr: Add support for shared RO library.
2015-07-17 03:17:50 +00:00
Makefile.rules
build-infr: Add support for shared RO library.
2015-07-17 03:17:50 +00:00
Makefile.toolchain
build-infr: Add support for shared RO library.
2015-07-17 03:17:50 +00:00
OWNERS
Add OWNERS files
2014-04-02 19:58:53 +00:00
PRESUBMIT.cfg
presubmit: Add hook to check for config options.
2015-06-30 17:18:45 +00:00
README
Add standalone lightbar simulation tool
2014-05-15 05:20:14 +00:00
README.fmap
Update EC config and FMAP to reserve room for vboot signatures
2012-05-04 14:42:58 -07:00

README 

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit
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