RTL-SDR getting tuner gains

[giuseppe massimo Bertani]

Hello,

I'd like to know the right way to retrieve the gains list from a RTL-SDR device via SoapySDR.

In particular I mean to read all the values returned by
rtlsdr_get_tuner_gains(dev, gains.data());

Currently, only the first and the last value are stored and can be read with getGainRange()

Giuseppe

[Josh Blum]

Well the right way to do it is as follows:

Iterate through the list of gains listGains():
https://github.com/pothosware/SoapyRTLSDR/blob/master/Settings.cpp#L208

And call getGainRange for each element in listGains:

https://github.com/pothosware/SoapyRTLSDR/blob/master/Settings.cpp#L312

I dont know if the implementation is 100% correct for every rtl variant.
Of course is something is missing, dont hesitate to open an issue or PR :-)

-Josh

Giuseppe

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