Set Frequency from C++ Block

I would like to transmit a stepped-frequency pulse train.

e.g.,
pulse 1 @ freq0, pulse 2 @ freq0+df, pulse 3 @ freq0+2*df, etc…

What makes this hard is that I need to set the vco frequency from within
a C++ block. Is there an example of this anywhere? If not, any hints?

I would guess this is daughter card specific. So, if it helps, I’m using
the Flex-… oops, excuse me … RFX-2400.

Thanks,

  • Lee