At home now, but don't recall USB settings of any sort there, just the wired Ethernet adapter of my machine. I set that to the same subnet but that's irrelevant. ifconfig on the Linux machine didn't show a USB adapter, from memory.

I'll have to hunt around for USB adapter settings - they're probably there somewhere!! Or Linux is not detecting the RNDIS adapter connection perhaps. Is there an RNDIS equivalent of "msconn"?

My Linux abilities are on a par with my NuttX abilities...very very bad! Which is the lesson I'm learning the very hard way...NuttX is extremely hard if you don't know Linux :(

On 20/01/2022 18:08, Alan Carvalho de Assis wrote:
Hi Tim,

You we welcome!

Are your Linux usb interface on this 10.0.0.x range as well? Is they
are not in the same network class it will not work.

BR,

Alan

On 1/20/22, Tim<t...@jti.uk.com>  wrote:
Following suggestions relating to FAT/MSD/USB I have been playing with
RNDIS
following the NuttX Channel video by Alan C. de Assis  (thank you Alan -
only just found all of your videos!!).

It all builds OK and ifconfig suggests all is good:

nsh> ifconfig
lo         Link encap:Local Loopback at UP
             inet addr:127.0.0.1 DRaddr:127.0.0.1 Mask:255.0.0.0

eth0    Link encap:Ethernet HWaddr e0:de:00:ad:be:ef at UP
             inet addr:10.0.0.2 DRaddr:10.0.0.1 Mask:255.255.255.0

But Linux (Ubuntu 20.04) doesn't "see" it and I can't ping it.

Connecting to Windows just results in loads of error messages in nsh to do
with unrecognised rndis messages. Leave that for another day.

If I try and do a local ping it suggests there's an error with sockets, or
ping?

nsh> ping 127.0.0.1
psock_socket: ERROR: socket address family unsupported: 2
socket: ERROR: psock_socket() failed: -106
ERROR: socket() failed: 106
nsh>

106 is endpoint already connected; it's the same whether the USB is
connected to the Linux machine or not.

As usual, any suggestions welcomed!!


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