How to start and stop recording without exiting the flowgraph

GNU Radio
1

Hi all,

I would like to use two filesink blocks to record signals from two
USRP:s
with MIMO Cable. I am interested in the phase offset of an incoming
signal
so I first need to calibrate and then start recording. I haven’t found
how
this could be done in an easy way, does anyone have any ideas?

To clarify:
I would like to start my flowgraph then when I press a button in the GUI
start recording and then press the button again and stop recording.

Thank you all in advance.

Regards

Carl

2

On 05/24/2015 06:46 PM, Carl O. wrote:

start recording and then press the button again and stop recording.
Write a small Python block that takes a setter, then input a button
state through a QT selector. This block will only allow samples flowing
through when you input a certain state.

Cheers,
M

3

Thank you for the answer.
I think I found however that the selector block and a check button is
already doing what I needed.

Cheers,

Carl

4

Hi,

I tried to follow Carl’s suggestion to record a wav file but it didn’t
work
for me. The first time I change the check box the wav file sink will
stop
working forever. File sinks works fine. Will Martin’s suggestion work
for
wav files or does anyone have another suggestion to record wav files
only
when the checkbox is enabled?
I’ve attached my flowgraph.

Cheers,
Murray

2015-05-26 22:40 GMT+01:00 Carl O. [email protected]: