csete
add iq capture commands for gqrx
Related to a request on GQRX, I added logic for capturing the IQ part of the signal and not just the audio.
This was tested by connecting GQRX and gpredict, and confirming that when the AOIQ/LOIQ options were checked in the GUI, that an IQ file was produced.
Converting to draft because of changes being made in gqrx that will impact this PR
Great draft. As far as I understood, the new commands merged in gqrx are these:
U IQRECORD 1
U IQRECORD 0
u IQRECORD
(see also https://github.com/gqrx-sdr/gqrx/issues/1403#issuecomment-2644222728 and https://github.com/gqrx-sdr/gqrx/pull/1142)
I'd find it great to get these command somehow included here.
Okay, I changed the commands to match the commands that were used in the gqrx branch that was used to allow remote IQ capture. I tested this by compiling the master branch of gqrx and compiling this branch of gpredict. I then found a satellite that was entering view and set up an IQ and audio trigger for that sat. I then confirmed that the IQ file was produced and matched the length of time that the sat was in view. This demonstrates that the U IQRECORD {0|1}commands work and can be set through gpredict to interact with gqrx.