The UW Quantum System Engineering Laboratory has written
code for Magnetic Resonance Force Microscopy (MRFM).
The code is available from
Some of the code might be useful to other GNU Radio users. On the
FPGA side, there is a 2-stage biquad filter with 24-bit (not 16-bit)
data path and filter coefficients. There is also an input multiplexer
and adder. On the host side, there is code (in Python with SciPy)
that transforms transfer functions, expressed as ratios of polynomials
with floating point coeffcients, into cascaded biquad stages with
scaled integer coeffcients. The host side code acts as a server, so
it can communicate with the MRFM experiment software over TCP/IP
sockets. There is a sample client, also in Python with Scipy.
I have put links to our site on the Wiki OurUsers and OtherCode pages.