LRRP Decoding

[ale462013]

hi I'm working to decode some lrrp and raw data. This is the log, someone can help me? Thanks


https://pastebin.com/yKNCrYFJ

ps: sorry for my bad english but i'm italian

 

[DSheirer]

+DMR                slot2    BS DATA       DCC=1  Data Header DPF=[2:UcData] Tgt=10600 Src=608 Conf=0 SAP=[4:IP Data] Blocks=4 Pad=5 Last=0 Seq=0
+DMR           slot1         BS DATA       DCC=1  Idle
+DMR                slot2    BS DATA       DCC=1  Rate 1/2 Data 45 00 00 27 61 7D 00 00 40 11 D4 81  E..'a}..@...
+DMR           slot1         BS DATA       DCC=1  Idle
Null SLCO
+DMR                slot2    BS DATA       DCC=1  Rate 1/2 Data 0C 00 02 60 0D 00 29 68 0F A1 0F A1  ...`..)h....
Sync:+DMR
+DMR                slot2    BS DATA       DCC=1  Rate 1/2 Data 00 13 11 49 07 09 66 40 15 1A 33 04  ...I..f@..3.
+DMR           slot1         BS DATA       DCC=1  Idle
Activity update:  Slot1=No Activity  Slot2=Indiv Data
+DMR                slot2    BS DATA       DCC=1  Rate 1/2 Data E2 0C F3  ... LRRP; Tgt=10600 Src=608

Formatted to 32-bit words:

45000027 IPV4 Header
617D0000
4011D481 SubProtocol: 0x11=UDP
0C000260 Source IP: 12.0.2.96 (Radio ID: x.x.2.96 = x.x.0x02.0x60 = 0x0260 = 608)
0D002968 Destination IP: 13.0.41.104 (Location Server: x.x.41.104 = x.x.0x29.0x68 = 0x2968 = 10600)
0FA10FA1 Source Port: 4001, Destination Port: 4001

0013114907096640151A3304E20CF3 UDP Payload

00131149070966 40151A33 04E20CF3

latitude = 0x40151A33 = 1075124787 * (180/0xFFFFFFFF) = 45.0579593203N
longitude =  0x04E20CF3 =   81923315 * (360/0xFFFFFFFF) = 6.86673293981E

 

[ale462013]

There is an automatic mode to decode it? Thank you very much for replying!

 

[DSheirer]

I don't know if any of the available programs can decode this format.

 

[mtindor]

I don't know if any of the available programs can decode this format.

Hi Denny,

I know you aren't the author of DSDPLus, but I'll throw this out there anyway. The LRRP data that was posted above is not the same LRRP data that DSDPlus' LRRP decodes? I know it doesn't decode all LRRP. But I figure if it definitely doesn't decode this particular variety (but you can), then I'll submit a request to the DSDAuthor to add support for this. Based upon how you responded, it sounds as if you are saying that this is not the same variety of LRRP data that DSDPlus currently decodes.

Thanks

Mike

 

[mtindor]

There is an automatic mode to decode it? Thank you very much for replying!

If DSDPlus' LRRP application does not decode this particular variety of LRRP, I would recommend that you do this:

1. Capture a nice chunk of _raw_ audio using DSDPlus
2. Zip up the raw audio file into a zipfile
3. Change the .ZIP extension to .ZAP
4. Send to dsdplusfastlane@gmail.com with a note asking them to add support for that variety of LRRP.

NOTE: If you don't get a response from dsdplusfastlane@gmail.com after sending in the raw audio, don't get all bent out of shape. As long as you send it using the procedure above, they will get it -- and i'm sure they will take your submission into consideration.

Mike

 

[ale462013]

If DSDPlus' LRRP application does not decode this particular variety of LRRP, I would recommend that you do this:

1. Capture a nice chunk of _raw_ audio using DSDPlus
2. Zip up the raw audio file into a zipfile
3. Change the .ZIP extension to .ZAP
4. Send to dsdplusfastlane@gmail.com with a note asking them to add support for that variety of LRRP.

NOTE: If you don't get a response from dsdplusfastlane@gmail.com after sending in the raw audio, don't get all bent out of shape. As long as you send it using the procedure above, they will get it -- and i'm sure they will take your submission into consideration.

Mike

thank you very much for replying my question, i sent it now. Hopefully in the next fastlane update, specially for italian DSD+ users!

With wireshark you can do anything?


Alessandro