Posted on May 17, 2011 at 13:59''we are trying''
Who is ''we'' ?
''to make the mathematical function of one operational amplifier'' Why??! That seems a bizarre thing to do
with an STM32!
Actually, you're not: modelling just an op-amp would be simple - it'd be just a multiply.
You are trying to model the transfer function of a complete circuit - which just happens to include an op-amp.
Rather than try to model this in arithmetic, I think you'd be better to analyse the circuit, and then implement a corresponding digital filter.
Have you looked at the DSP library:
http://www.st.com/mcu/familiesdocs-110.html
Or have you looked for an open-source SPICE-type application?
