Catching UHD errors in Python

GNU Radio
1

Is there a good way to catch UHD errors in Python? I will look into
gr_async_msg_source for handling L’s, O’s, U’s, and S’s, but how does
one catch UHD runtime errors such as if the Ethernet cable gets
disconnected from an N200? UHD docs describe registering a handler
method but has this functionality been swigged into GNU radio?

Would it make sense to define a handler function in
gr_uhd_usrp_{sink|source}?

Respectfully,
Sean Nowlan

2

Will try “try” “catch”… this very well may have been a dumb question.
I blame it on lack of sleep.

From: discuss-gnuradio-bounces+sean.nowlan=removed_email_address@domain.invalid
[discuss-gnuradio-bounces+sean.nowlan=removed_email_address@domain.invalid] on behalf
of Nowlan, Sean [[email protected]]
Sent: Tuesday, May 01, 2012 9:44 PM
To: [email protected]
Subject: [Discuss-gnuradio] catching UHD errors in Python

Is there a good way to catch UHD errors in Python? I will look into
gr_async_msg_source for handling L’s, O’s, U’s, and S’s, but how does
one catch UHD runtime errors such as if the Ethernet cable gets
disconnected from an N200? UHD docs describe registering a handler
method but has this functionality been swigged into GNU radio?

Would it make sense to define a handler function in
gr_uhd_usrp_{sink|source}?

Respectfully,
Sean Nowlan

3

On 05/01/2012 06:44 PM, Nowlan, Sean wrote:

Is there a good way to catch UHD errors in Python? I will look into
gr_async_msg_source for handling L’s, O’s, U’s, and S’s, but how does
one catch UHD runtime errors such as if the Ethernet cable gets
disconnected from an N200? UHD docs describe registering a handler
method but has this functionality been swigged into GNU radio?

Hasnt been swigged. This would be neat because the errors could pop up
in a little message window in the GUI.

Would it make sense to define a handler function in
gr_uhd_usrp_{sink|source}?

No. Its more of a global process thing, rather than a per instance.

This is basically a swig directors use case, and there isnt any public
header c++ header stuff to expose. You are basically looking at a custom
handler in the .i file,
and a little routine in the init.py

I’m not in a state of implementing it right now, but if you want some
inspiration, the python blocks code uses the existing gnuradio swig
director stuff, you should take a look:

See use of feval in cc and h, py file

-josh