[amsat-bb] Falconsat-3 upload problem

Mon Jun 17 12:53:24 UTC 2019

I am no expert.  But remember that your RF and all processing has to be
full duplex.  The turn arround for packets in the satellite is
instantaneous.
with no TXD delays.  Bob

On Mon, Jun 17, 2019 at 2:24 AM Hans BX2ABT via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> Up til now I have been successful in getting PacSatGroundStation (PSGS)
> to work on receive. You can go here if you want to see my setup:
> http://bx2abt.com/main/Falconsat-3 . I can hit FalconSat-3 with a
> directory request or file download request and get an immediate response
> and consequent downloads. Uploading is a different story, however. I
> have been able to get some messages uploaded, but it was more by chance.
> Right now if I want to upload I seem to get into a loop where PSGS keeps
> on sending out the same frame (I presume), then disconnects, after which
> the whole cycle starts over again.
>
>  From the PSGS debugging info you can see that I am successful in
> logging into PFS3-12. My file gets a designated ID (1f14 in this case)
> and is ready to be received. Then it uploads what I presume is one frame
> (you can see this in Direwolf where the same chunk of data is send over
> and over again) after which possibly the reason why things don't work:
> "ER_BODY_CHECK received while uploading:
> /home/hans/PacSatGroundData/FalconSat-3/BX2ABT17.txt.out". The only
> mention of ER_BODY_CHECK I can find on the internet is that it is sent
> when the checksum on the file body fails. After that the whole sequence
> starts again, so the message never gets uploaded and out of the queue.
>
> Does this problem lie with FalconSat-3, Direwolf or PGSG, or somewhere
> else? Where is the checksum being made? This is my first forray into
> packet radio/PacSat, so I'm not an expert (yet). I don't want to make
> any (un)educated guesses, thus any help or hints are appreciated. Cheers,
>
> Hans
> BX2ABT
>
>
>
> This is the output (with debugging turned on) of PSGS:
>
> --------BEGIN-------
> Open ABCD:
> Ready to upload file: BX2ABT17.txt.out
> B: 209908947.
> U>>
> DEBUG 3: Open: Adding UP LINK Event: UL_CONNECT
> PB: Empty..
> I>>From:PFS3-12 to BX2ABT  Ctrl: 0 Type: I Cmd PF: 0 NR: 0 NS: 0  5 2 cc
> a7 fb 5c 4> SUCCESSFUL LOGIN to PFS3-12 by BX2ABT
> DEBUG 3: Open: Adding UP LINK Event: From:PFS3-12 to BX2ABT  Ctrl: 0
> Type: I Cmd PF: 0 NR: 0  NS: 0  5 2 cc a7 fb 5c 4> SUCCESSFUL LOGIN to
> PFS3-12 by BX2ABT
> DEBUG 3: Cmd Ok: Adding UP LINK Event: UL_REQUEST_UPLOAD
> DEBUG 3: Cmd Ok: UL_CMD: From:BX2ABT to PFS3-12 Ctrl: 0 Type: I Cmd PF:
> 0 NR: 0  NS: 0  8 3 14 1f 0 0 31 3 0 0 UL CMD: UPLOAD_CMD File: 1f14
> Size: 331
> S>>
> I>>From:PFS3-12 to BX2ABT  Ctrl: 22 Type: I Cmd PF: 0 NR: 1 NS: 1  8 4
> 14 1f 0 0 31 3 0 0> Ready to receive file: 1f14 from BX2ABT  at off: 817
> DEBUG 3: Waiting: Adding UP LINK Event: From:PFS3-12 to BX2ABT Ctrl: 22
> Type: I Cmd PF: 0 NR: 1  NS: 1  8 4 14 1f 0 0 31 3 0 0> Ready to receive
> file: 1f14 from BX2ABT  at off: 817
> DEBUG 3: Waiting: UL_GO_RESP: From:PFS3-12 to BX2ABT  Ctrl: 22 Type: I
> Cmd PF: 0 NR: 1  NS: 1  8 4 14 1f 0 0 31 3 0 0> Ready to receive file:
> 1f14 from BX2ABT  at off: 817
> DEBUG 3: Waiting: GO FILE>From:PFS3-12 to BX2ABT  Ctrl: 22 Type: I Cmd
> PF: 0 NR: 1  NS: 1  8 4 14 1f 0 0 31 3 0 0> Ready to receive file: 1f14
> from BX2ABT  at off: 817
> DEBUG 3: Data: Adding UP LINK Event: UL_DATA_END
> DEBUG 3: Data: UL_DATA_END: UL_DATA_END
> S>>
> I>>From:PFS3-12 to BX2ABT  Ctrl: 44 Type: I Cmd PF: 0 NR: 2 NS: 2  1 7
> 10> UL NAK 16: ER_BODY_CHECK
> DEBUG 3: Data End: Adding UP LINK Event: From:PFS3-12 to BX2ABT Ctrl: 44
> Type: I Cmd PF: 0 NR: 2  NS: 2  1 7 10> UL NAK 16: ER_BODY_CHECK
> DEBUG 3: Data End: UL_NAK_RESP: From:PFS3-12 to BX2ABT  Ctrl: 44 Type: I
> Cmd PF: 0 NR: 2  NS: 2  1 7 10> UL NAK 16: ER_BODY_CHECK
> NAK: ER_BODY_CHECK received while uploading:
> /home/hans/PacSatGroundData/FalconSat-3/BX2ABT17.txt.out
>
> TIME-1: PHT: uptime is 469/13:51:30.  Time is Sat Jun 08 12:19:29 2019.
> U>>
> DEBUG 3: Idle: Adding UP LINK Event: UL_DISCONNECTED
> DEBUG 3: Idle: Adding UP LINK Event: Open ABCD:
> Open ABCD:
> B: 209908947.
> PB: Empty..
> ---------END-------
>
> This is what Direwolf's output is:
>
> --------BEGIN-------
> PFS3-1 audio level = 68(+118/-110)   [NONE] |||||||||
> [0.4] PFS3-1>LSTAT:I P:0x13A8 o:0 l:31473 f:31529, d:1 st:4 e:26<0x0d>
> Unknown APRS Data Type Indicator "I", Ambulance
> [0L] BX2ABT>PFS3-12:(SABM cmd, p=1)
>
> PFS3-12 audio level = 69(+115/-111)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(UA res, f=0)
>
> PFS3-12 audio level = 70(+119/-110)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(I cmd, n(s)=0, n(r)=0, p=0,
> pid=0xf0)<0x05><0x02>^<0xa8><0xfb>\<0x04>
> [0L] BX2ABT>PFS3-12:(I cmd, n(s)=16, n(r)=120, p=0,
> pid=0x08)<0x08><0x03><0x14><0x1f><0x00><0x00>1<0x03><0x00><0x00>
>
> PFS3-12 audio level = 70(+121/-110)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(RR res, n(r)=1, f=0)
>
> PFS3-12 audio level = 70(+121/-109)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(I cmd, n(s)=17, n(r)=120, p=0,
> pid=0x08)<0x04><0x14><0x1f><0x00><0x00><0xfe><0x00><0x00><0x00>
> [0L] BX2ABT>PFS3-12:(I cmd, n(s)=1, n(r)=2, p=0, pid=0xf0)<0xfe><0x00>
> the internet server that you sent me a message on April 11, but
> unfortunately I never was able to download it. It took a while to get
> the transmitting part working, but now it does and I'm very pleased to
> be able to contact you via FS-3. Truly an amazin
> [0L] BX2ABT>PFS3-12:(RR cmd, n(r)=2, p=1)
>
> PFS3-11 audio level = 65(+118/-109)   [NONE] |||||||||
> [0.4] PFS3-11>PBLIST:PB: Empty.<0x0d>
> Unknown APRS Data Type Indicator "P", Original Balloon (think Ham b
>
> PFS3-12 audio level = 66(+117/-109)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(RR res, n(r)=1, f=1)
> [0L] BX2ABT>PFS3-12:(I cmd, n(s)=33, n(r)=120, p=0,
> pid=0x08)<0x08><0x03><0x00><0x00><0x00><0x00>1<0x03><0x00><0x00>
>
> PFS3-12 audio level = 74(+125/-111)   [NONE] |||||||||
> [0.4] PFS3-12>BX2ABT:(DISC cmd, p=1)
> [0L] BX2ABT>PFS3-12:(UA res, f=1)
> --------END-------
>
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