mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-04 22:11:41 +00:00
ca74d14ea9
Previously the USB console code used two separate bidirectional endpoints. Using the STM32 USB perihperals endpoints in this manner means that there are only 8 total endpoints available. But the STM32 USB peripheral allows for a single endpoint number to be used for both IN and OUT transactions, and while this (re-using an endpoint number for both IN and OUT endpoints) appears to be not compliant with the letter of the law with respect to the USB spec, it is supported by USB stacks, and is used in a number of USB devices. So this change makes the USB console driver share a single endpoint number between the IN and OUT bulk endpoints used to implement the console. Signed-off-by: Anton Staaf <robotboy@chromium.org> BRANCH=None BUG=None TEST=make buildall -j Enable USB console on discovery board and manually test. Change-Id: I511e56de2162a6c04ddba80d26b37b4f0cd993fd Reviewed-on: https://chromium-review.googlesource.com/225868 Tested-by: Anton Staaf <robotboy@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org> Commit-Queue: Anton Staaf <robotboy@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit