Re: [Discuss-gnuradio] Computation of RFNoC Blocks in GRC

2019-08-15 Thread Felix Greiwe
Hi Derek, thank you for your helpful answer! In the link you sent, they mention that Q16 Format is used as otw Format. Is that the same as the signed Q1.15 Format? I think it has to be, because otherwise only positive numbers could be mapped. I now managed to add numbers from my registers to my

Re: [Discuss-gnuradio] Computation of RFNoC Blocks in GRC

2019-08-14 Thread Derek Kozel
Hi Felix, The USRPs use signed complex 16 bit integers internally in the FPGA. These are converted (optionally!) to signed compled 32 bit floating point numbers on the host pc by UHD. The format actually sent over USB/Ethernet is called the Over The Wire format and the format that the user code

[Discuss-gnuradio] Computation of RFNoC Blocks in GRC

2019-08-13 Thread Felix Greiwe
Hello together, I recently created some RFNoC-Blocks using the RFNoC Modtool and an USRP x310 from ETTUS for future GRC application. My Simulation in Vivado went well and thus I built an FPGA-Image and flashed it to my USRP x310 device. In GRC however, I witnessed very strange behaviour