I have a USRP N210, running on Ubuntu-10.04, when I try to use the
Gnuradio-Companion to make a fm_receiver,
I success generate the python code, but when i try to run it,
terminate called after throwing an instance of ‘std::invalid_argument’
what(): gr_buffer_add_reader: nzero_preload must be >= 0
what is that mean?
I know that I might have some problem in the flow graph or parameter
I use the old version example(USRP1) which I search on the internet as
reference, can any one help me?
PS I would like to ask an additional question: If I only have DBSRX
RFX1800 these three daughterboards, is that means I can’t receive the
FM Radio Signal by my fm_receiver through the USRP N210 (bandwidth not
right)? or there is some other ways ?