tree 0674970493c0e478766836ec01ec8c9b20c8624e
parent 326a08fe63c280f878987203f615ec337d828a13
author Harald Welte <laforge@osmocom.org> 1667336314 +0100
committer Harald Welte <laforge@osmocom.org> 1667336498 +0100

fw/e1-tracer: Additional USB configuration for "osmo-e1d compatible mode"

This adds a second USB configuration to the e1-tracer firmware.  This
configuration is closer to the USB configuration of an icE1usb and hence
paves the way for using osmo-e1d with the tracer.

The main conceptual difference between the existing "legacy"
configuration and this new "e1d compatible" configuration is to have two
USB interfaces, one for each direction of the traced E1 interface.  Each
interface has its own separate two altsettings, one for the disabled
and one for the enabled state.

Unmodified osmo-e1d will not work straight away with this, as it expects
ISO OUT and ISU Feedback endpoints, which a pure rx-only tracing device
of course doesn't have.

Related: OS#5733
Change-Id: I97062b9f12317b1b9b3855409c2380108cb921ff