Frequency hopping transmit [FIXED]

[ricardas]

@KarlL

Am i right in thinking that setFrequencyComponent with RF will set the radio while with BB it will change the NCO? If yes then what’s the difference with using the SPI registers?

Correct, the only difference is that using API to set the values is doing extra work and some of it might be redundant. By manipulating SPI registers you can avoid that and do minimal ammount of configuration necessary.

@KarlL

So I could put up to 16 frequency offsets, and then just switch between them. Now why would that be faster than just changing the value of one of those 16 registers? Is it because there’s some caching involved, and setting one of those 16 registers is time consuming, but then switching is really fast?

Yes you can alternatively just keep reconfiguring one of the entries, it should be just as fast as switching. The difference is that to switch you need to change only 1 register, but to reconfigure the frequency you need to modify at least 2 registers (which would need to be calculated based on sampling frequency and reference clock

@KarlL

Do you have more info (eg code sample) on how to use those registers exactly? I guess those are not accessible through Soapy, but only directly through the Lime API

myriadrf/LimeSuite/blob/master/src/lms7002m/LMS7002M.cpp#L1715