The tracing runs a higher priority task (SNIFFER) than the packet
injection (on CONSOLE task) and both RX and TX are using the same buffer,
so when we are sending a packet, we are getting immediately preempted by
the tracer and bad stuffs happen.
Now, we can manually inject packets and get the text trace of the
response.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=with the SOP' experimental patch, plug a full-featured cable into
Samus with Twinkie as an interposer, then do the following sequence:
Pretend there is a device
> tw resistor rd 0
Enable the text tracing
> tw trace on
Send discover identity to the cable (and get the descriptors)
> tw sendprime 1 0x104f ff008001
Sent CC1 104f + 1 = 381
165.939687 SRC/0 [0141]GOODCRC
165.942520 SRC/0 [514f]VDM Vff00:DISCID,ACK:ff008041 1c00050d 00000000 030a0000 11082032
Change-Id: Ie0ad57341c6476e983229b532716986dffefa8a1
Reviewed-on: https://chromium-review.googlesource.com/342512
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>