[casper] Connecting Error using Python library with KATCP server (ROACH-2)

2016-07-18 Thread Shanquan Tian
Dear CASPER experts, I'm sorry for this spam. I'm an exchange undergraduate student working in Yale university now. I had a problem while using Python to connect my PC to the ROACH2 board. I've gotten .fpg files already using Simulink and Xilinx ISE. Now my purpose is to load the file to the board

Re: [casper] 32 Channel PFB and Wideband Real FFT . . .

2016-07-18 Thread G Jones
Hi Randy, I think the issue is that you are processing 16 samples per FPGA clock for VEGAS (if I remember right), so I expect you'll need to hand craft an FFT out of the FFT direct block and twiddle blocks. It might be easier to use a xilinx block in this case, but I haven't actually looked at what

[casper] 32 Channel PFB and Wideband Real FFT . . .

2016-07-18 Thread Randy McCullough
All, We're currently in the process of adding incoherent and coherent de-dispersion pulsar modes to our ROACH 2-based VEGAS backend and have hit a stumbling block. We've built all designs ranging from 8,192 channels down to 64 channels, but when attempting to implement a 32-channel design th