[Hackrf-dev] Adding HackRF support to dump1090

Sun Jun 28 20:02:28 EDT 2015

Sure, I am glad it's been useful.

Default gains are the maximums but they can be adjusted from the CLI with --vga-gain and --lna-gain options.

> On Jun 28, 2015, at 4:44 PM, Tom <vsboost at hotmail.com> wrote:
> 
> Thanks for making this, I think the default vga gain of 60 is quite much, I had better luck with around 28.
>  
> Have only been running it for a few min so I cant compare yet.
>  
>  
> From: HackRF-dev [mailto:hackrf-dev-bounces at greatscottgadgets.com] On Behalf Of Ilker Temir
> Sent: Monday, 29 June 2015 3:16 AM
> To: hackrf-dev at greatscottgadgets.com
> Subject: Re: [Hackrf-dev] Adding HackRF support to dump1090
>  
> Here it goes: https://github.com/itemir/dump1090_hackrf
> 
> I can get some reception from my window with the standard HackRF antenna.
> 
> Ilkers-MacBook-Pro:dump1090_hackrf itemir$ ./dump1090 
> No supported RTLSDR devices found.
> HackRF successfully initialized (AMP Enable: 0, LNA Gain: 40, VGA Gain: 62).
> *5dab7437d7920a;
> CRC: d7920a (ok)
> Single bit error fixed, bit 10
> DF 11: All Call Reply.
>   Capability  : Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is on airborne)
>   ICAO Address: ab7437
> 
> *5fa69b92ccd411;
> CRC: ccd411 (ok)
> Single bit error fixed, bit 13
> DF 11: All Call Reply.
>   Capability  : Level 7 ???
>   ICAO Address: a69b92
> 
> *5dab9091529b68;
> CRC: 529b68 (ok)
> Single bit error fixed, bit 24
> DF 11: All Call Reply.
>   Capability  : Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is on airborne)
>   ICAO Address: ab9091
> 
> Feedback and contributions welcome.
> 
> On 6/27/15 7:27 PM, Tom wrote:
> Well done.
>  
> Look forward to trying this out.
>  
> From: HackRF-dev [mailto:hackrf-dev-bounces at greatscottgadgets.com] On Behalf Of Ilker Temir
> Sent: Sunday, 28 June 2015 11:49 AM
> To: Donald Pupecki
> Cc: hackrf-dev at greatscottgadgets.com
> Subject: Re: [Hackrf-dev] Adding HackRF support to dump1090
>  
> Thanks! signed to unsigned conversion was the culprit. I first tested it with cox by converting the file and then tweaked my code to do that within the receive path. 
> 
> I now have a working port of dump1090 to HackRF. I need to do some cleanup but as soon as done, will post it on GitHub and announce on this forum.
> 
> On 6/27/15 1:29 PM, Donald Pupecki wrote:
> I don't believe hackrf_transfer and rtl_sdr output in the same format. They are both 8 bit but the hackrf output is signed whereas the rtl output is unsigned.
> 
> If you get this working a hackrf please post the port on github or somewhere as that would be sweet.
> 
> On Jun 27, 2015 4:00 PM, "Ilker Temir" <ilker at ilkertemir.com> wrote:
> Hello,
> 
> I am trying to add HackRF support to Salvatore Sanfilippo's dump1090 tool (https://github.com/antirez/dump1090) as a learning exercise. The tool was originally designed for RTL SDR devices. However, I can't seem to get this port to work.
> 
> To eliminate potential issues in my code, I simplified the troubleshooting steps. Here are the basic set of troubleshooting steps I am using:
> 
> Per tool's documentation, a data file can be captured with rtl_sdr utility in the following way: 
> 
>         rtl_sdr -f 1090000000 -s 2000000 -g 50 output.bin
> 
> Then you can pipe it into dump1090 like this:
>         dump1090 --ifile output.bin
> 
> I made an assumption that the HackRF equivalent of rtl_sdr command above would be the following:
> 
>         hackrf_transfer -r output.bin -f 1090000000 -s 2000000 -p 0 -a 0 -l 40 -g 62
> 
> However, capturing packets with HackRF this way and piping them into dump1090 doesn't do anything. I have tried this sitting next to an airport and capturing packets while planes were landing and taking off. I don't have an RTL SDR dongle so I can't test the rtl_sdr command myself. It didn't make to sense to buy a RTL SDR device after HackRF but if I can't crack this, I am considering to buy one. 
> 
> BTW, I also tried different gain settings, and sample rate of 8e6 with hackrf_transfer, no difference. That said, I never enabled amp_enable. 
> 
> Would anyone know if rtl_sdr and hackrf_transfer capture the packets in the same way and format? Or do I need to do some kind of a conversion or translation in between the two to make them compatible? 
> 
> Any help or idea will be appreciated.
> 
> P.S. I am aware of gr-air-modes for HackRF to decode ADS-B signals. My goal is to hack dump1090 and add HackRF support as a learning exercise. 
> 
> Thanks,
> 
> Ilker
> 
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
> 
>  
> 
> 
> 
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>  
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://pairlist9.pair.net/pipermail/hackrf-dev/attachments/20150628/5843577b/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2372 bytes
Desc: not available
URL: <https://pairlist9.pair.net/pipermail/hackrf-dev/attachments/20150628/5843577b/attachment.bin>