Honored Contributorin my project , there are fft (run by software code only), and fir(maybe run only by hardware), pwm; a/d , then how many source i need for my project , (just evaluate is more or less),, cuz i want to choose a board. but i do not want to waste useless source ,
help me :) thanks a lot
Honored ContributorIt is not easy to answer your question on "how many source I need" as there are many variables involved.
1. Shall we assume you will be running a NIOS II processor to do the FFT? 2. The FIR will (maybe) be in hardware? 3. Pulse Width Modulator. 4. A/D input reader. All of the above will use various resources from the internals of the FPGA in different amounts depending on several factors. Code space will be a function of the FFT size. Logic size will be a function of the size of the FIR as well. The PWM is quite small. The A/D input is small as well. If I had to guess at this, I would look at one of the Altera DSP Kits, either Cyclone II or Stratix II 60 based. There may be other boards out there as well that have the A/D's you need, as well as some external memory in case your code gets to big. AvatarHonored Contributorok i know how to do now . thank you very much and best wishes for you and for all the FPGA man:)
