Hi everyone.
I am trying to run a python script that has been generated for convenience
using the non-GUI GRC option. (3.9.5.0) (Python 3.10.12)
The script sends a short (~300 ms) finite sequence of samples as ranging code
to a satellite and records the return to a file after the round-trip interval
(~262 ms). This sequence of events is achieved using the head block as a method
of accurately counting samples, which will be important in the file content
analysis. The flowgraph cycle is complete in less than 1 second, with the data
file appended each run.
I am looking for a quick and hopefully elegant way of synchronising the start
of above flowgraph to the 1 pps input, but on a repetitive basis, say every 10
seconds. The published notes on 1pps USRP synchronisation are very instructive,
however applying the necessary scheduler control means to the python _main_ is
causing the difficulty here.
Many thanks and compliments of the season.
David Taylor GD4FMB
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