[Hackrf-dev] Adding HackRF support to dump1090

Wed Jul 1 13:13:07 EDT 2015

I've just merged airspy support into dump1090_hackrf. This weekend I'll try
rip out device-specific airspy/hackrf support in favor of libosmosdr to
allow compatibility with even more devices

On Sun, Jun 28, 2015 at 6:12 PM, Chris Kuethe <chris.kuethe at gmail.com>
wrote:

> Great.  The amp is not enabled by default, so that you don't cook your
> receiver in case you have some strong local sources.
>
> Expect a bit more code churn later tonight; I've almost got airspy support
> working too.
>
> On Sun, Jun 28, 2015 at 6:07 PM, Tom <vsboost at hotmail.com> wrote:
>
>> Thanks,
>>
>> Its running quite well so far, got 6 planes with these settings and 10
>> with the lna on.
>> On 29 Jun 2015 10:58 am, Chris Kuethe <chris.kuethe at gmail.com> wrote:
>>
>> I've adjusted the default gain to 32/48 from 40/62.
>>
>> On Sun, Jun 28, 2015 at 5:02 PM, Ilker Temir <ilker at ilkertemir.com>
>> wrote:
>>
>> 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
>> <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
>> <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
>>
>>
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>>
>>
>>
>>
>>
>>
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>>
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>>
>>
>>
>> --
>> GDB has a 'break' feature; why doesn't it have 'fix' too?
>>
>>
>
>
> --
> GDB has a 'break' feature; why doesn't it have 'fix' too?
>

-- 
GDB has a 'break' feature; why doesn't it have 'fix' too?
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