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Since the stm32 MCUs are programmed over the UART, we need to make some changes to allow the interpreter to stop listening to the UART PTY when flash_ec needs those PTYs. Otherwise, the EC-3PO interpreter will interfere with the programming and cause the flash to fail every time. BUG=chromium:571170 BRANCH=None TEST=Use flash_ec to program both veyron_jerry and samus_pd with no interruptions. TEST=Use flash_ec to program veyron_jerry without servod changes with no interruptions. CQ-DEPEND=CL:321084 CQ-DEPEND=CL:318900 Change-Id: I350fdb708d30c4ec6f18e5dc4abd621370522381 Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/320629 Commit-Ready: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org> Reviewed-by: Todd Broch <tbroch@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly