On 02/22/2016 03:33 PM, Andrew M.A. Cater wrote: > On Mon, Feb 22, 2016 at 11:06:02PM +0000, RickS via HackRF-dev wrote: >> Hi, >> >> I am in the process of designing a version of the HackRF One that will use a >> BeagleBone Black (BBB) in place of the micro-controller and CPLD. I already >> have the board laid out with two headers that will accept the BeagleBone. I >> had to enlarge the board a bit as well as add a couple of support parts. I >> tried to leave the rf section alone. I have done some testing bringing DA0 >> - DA7 to one of the headers of a BBB along with the clock. I was able to >> use PRU1 to sample the data lines during receive and pipe them through the >> network to GnuRadio for monitoring and demodulation. The throughput is >> fairly good maxing out the 10/100 port on the BBB at about 11MBs. I am >> planing on porting an open-source SDR-DSP core to test processing the IQ >> data directly on the BBB. I will use QtRadio as the control interface. >> >> It was Mr. Ossmann who suggested using the BBB processor as it contains two >> 200MHz real-time controllers (PRU).
The two 200 MHz real-time controllers will allow the HackRF to transmit and receive at the same time? I looked at simply replacing the existing controller with the BBB microprocessor but that was going to be a little more than I wanted to handle. The BBB has most of the processor IO available on it's headers anyway. Plus, buying a built up BBB is cheaper than adding the individual parts to the HackRf. >> >> This may become an Indiegogo project to see how much interest there is. Any >> suggestions or comments are welcome. >> >> Regards, >> Rick >> KD0OSS > >> _______________________________________________ >> HackRF-dev mailing list >> [email protected] >> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > > > I can't remember where I saw it now but somebody was reckoning that a BBB was > relatively RF noisy and could generate interference. What would be > interesting would > be doing this with a Cubietruck because that has more flash memory. The Cubietruck is probably transiting too. Also, isn't there a problem with microSD and mmc cards - don't they have a limited number of writes? The HackRF is noisy too. I know it transmits at 41.7 MHz and 50 MHz (which is the strongest) - and in the middle of the band I'm transmitting on - I've transmitted on 1 band so far. My doesn't have a RF shield - I don't trust my soldering skills. I'm going to try an aluminum case. > > Part of the problem is that there are a lot of bits flying around - small, > small ARM boards without good FPGA bolted on are not so good at this. There's a Xilinx Spartan-6 FPGA cape for the BBB for $90 https://www.element14.com/community/groups/fpga-group/blog/2014/10/03/first-experiences-with-the-valentfx-logi-bone I think you can configure it without the BBB using jTAG. Maybe a HackRF cape used with the FPGA cape - where the FPGA cape can also be used to interface a SATA device :) > > Now if the Parallella had really taken off :( > > All the best, > > AndyC > > G0EVX > _______________________________________________ > HackRF-dev mailing list > [email protected] > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > _______________________________________________ HackRF-dev mailing list [email protected] https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
