nrf9160 bsd socket recv() not blocking

RE: nrf9160 bsd socket recv() not blocking

miked531 — Fri, 10 May 2019 01:47:49 GMT

Success! I copied your bsd_os.c, and used nrfxlib master branch and it worked!

Thank you for your assistance!

Also, knowing the precise versions of the projects is a really big help. I've struggled with that often when trying out new features.

RE: nrf9160 bsd socket recv() not blocking

Håkon Alseth — Thu, 09 May 2019 08:00:07 GMT

Yes, you are right. Sorry for this. The bsd_os_timedwait() has changed to take in a pointer, which was done early in april when updating the bsdlib:

https://github.com/NordicPlayground/nrfxlib/commit/dfcef2f5c7f4aec0b7265b87c09ae136c5d5e7f3

You will need to have nrfxlib at 1st of april (or later), and for the UARTE1 tracing, you can omit those for testing (delete code related to define CONFIG_BSD_LIBRARY_TRACE_ENABLED)

I tested at_client (and a ntp example, without the calls to "blocking_*" functions) with the following repos:

nrf -> git checkout v0.3.0

nrfxlib -> git checkout master

zephyr -> git checkout v1.13.99-ncs2

And this is my modified bsd_os.c:

devzone.nordicsemi.com/.../bsd_5F00_os.c

Could you try this and see if it behaves better?

Kind regards,

Håkon

RE: nrf9160 bsd socket recv() not blocking

miked531 — Thu, 09 May 2019 04:02:21 GMT

I was so hopeful the patch would work, but no such luck. The patch didn't apply (I don't have west.yml). So I grabbed bsd_os.c directly and bsd_os_timedwait() was declared differently (and it's in nrfxlib). That was easy to change but then I ran into DT_NORDIC_NRF_UARTE_1_{TX,RX,CTX,RTS}_PIN undeclared errors.

I've got a work around that gets me over this hurdle (looping+sleeping) so on to the next thing for now...

... which is calling bind() [which I think is ultimately calling nrf_bind()] to bind a UDP socket to a port does not work. Try it with the sequence:
create socket(AF_INET, SOCK_DGRAM, 0)
setup sockaddr_in appropriately (using IPv4, btw)
call bind()
call sendto()
on the receiving side, the source port is not what I called with bind()

RE: nrf9160 bsd socket recv() not blocking

Håkon Alseth — Mon, 06 May 2019 07:43:37 GMT

Hi,

There's an open issue on my fork which is very similar to your question (https://github.com/Rallare/fw-nrfconnect-nrf/issues/2).

The bsdlib requires a port file (bsd_os.c), which shall hold the timed wait for all timed socket operations, either if it is blocking or configured with a timeout.

This timeout function has recently been added to the fw-nrfconnect-nrf repo, more specifically this PR: https://github.com/NordicPlayground/fw-nrfconnect-nrf/pull/561/files

I would recommend pulling this PR manually instead of updating all your repo's to the latest, especially if you have a currently working setup.

You can fetch a PR as a .diff or a patch by adding .diff/.patch to the end of the URL, then apply it to your tree.

Example: https://github.com/NordicPlayground/fw-nrfconnect-nrf/pull/561.patch

Kind regards,

Håkon