Re: [Discuss-gnuradio] Viewing timestamps using USRP2

[MarcW]

Thanks for your help Doug. I thought I knew which bits to monitor which
contained the timestamp but now im not sure! The packets received seem very
large. I have included a screenprint of one below. Please could you tell me
which bits are the timestamp in this packet?
The data appears to start from line 0020 but every other 32 bits are either
ff or 00.
Do we add the sync_every_pps() to txrc.c immediately before the while loop?

0000  00 15 17 d2 56 23 00 50  c2 85 33 f7 be ef 00 00   ....V#.P ..3.....
0010  00 00 6c 00 00 00 00 00  cd a6 fe 10 00 06 00 0c   ..l..... ........
0020  ff f0 ff f2 ff f1 00 33  00 36 00 13 00 20 00 31   .......3 .6... .1
0030  00 15 00 17 00 00 ff ff  00 11 ff f1 00 12 00 0f   ........ ........
0040  00 09 00 03 ff fa ff e7  00 00 ff fb ff f9 00 09   ........ ........
0050  ff e7 00 04 ff df ff e9  ff df 00 23 00 0d 00 09   ........ ...#....
0060  ff e7 ff c5 ff e2 00 2f  00 09 00 29 ff ec ff e1   ......./ ...)....
0070  ff da ff ff ff fc 00 05  00 09 ff e3 ff e0 ff e3   ........ ........
0080  ff e4 ff ed ff ec ff fe  ff fe ff cc ff ee ff da   ........ ........
0090  ff bc ff d1 ff db ff ee  ff ec ff fb ff f5 ff e7   ........ ........
00a0  00 0b 00 0f ff e5 00 00  ff f9 00 15 ff fb 00 09   ........ ........
00b0  00 13 00 0c 00 10 00 3f  00 11 00 32 00 0b ff f6   .......? ...2....
00c0  ff f6 00 03 00 37 00 14  00 3f ff e8 ff f8 ff fb   .....7.. .?......
00d0  00 0a ff e5 00 03 ff e9  00 07 ff e9 ff f5 00 08   ........ ........
00e0  00 27 00 00 00 0c ff f0  ff ef 00 1f 00 13 ff ee   .'...... ........
00f0  ff eb ff f0 ff f3 00 04  00 11 ff de ff e6 00 05   ........ ........
0100  ff e6 ff ef 00 0c 00 0c  ff e2 00 02 ff e2 00 19   ........ ........
0110  ff f5 00 37 ff fe 00 21  00 17 ff f7 00 18 00 09   ...7...! ........
0120  00 03 ff e5 ff e4 ff fb  00 1e ff f7 00 04 ff de   ........ ........
0130  ff db 00 00 ff f8 ff db  ff ca ff bd ff f0 ff bb   ........ ........
0140  ff fc ff e5 ff fd ff fe  ff f7 ff e3 ff da ff ef   ........ ........
0150  00 18 00 11 00 25 ff ff  00 2b ff ee ff fc 00 23   .....%.. .+.....#
0160  ff ef 00 08 ff dc ff bf  00 0d 00 00 00 17 00 20   ........ ....... 
0170  ff f1 00 09 00 06 ff fb  00 07 00 0e 00 09 ff fe   ........ ........
0180  00 21 00 1a ff fa 00 39  ff e2 00 0a 00 31 ff f4   .!.....9 .....1..
0190  00 19 00 1c 00 06 00 0a  ff bd ff b6 00 09 00 0b   ........ ........
01a0  00 18 00 05 ff cc 00 13  ff fd ff dc ff f6 ff ed   ........ ........
01b0  00 18 00 23 00 00 ff ea  ff fe 00 0c 00 0d ff e7   ...#.... ........
01c0  00 27 ff de 00 0c 00 03  00 17 00 2f 00 1b 00 31   .'...... .../...1
01d0  00 27 00 1e ff e5 00 26  ff d1 ff ee 00 02 00 01   .'.....& ........
01e0  ff ee ff f7 ff e7 ff d3  ff c4 ff ce ff ef ff d3   ........ ........
01f0  ff f5 ff e5 ff bc ff d4  ff ec ff cf ff d6 00 28   ........ .......(
0200  ff f9 00 12 ff fd 00 03  ff db 00 14 ff f2 ff d5   ........ ........
0210  ff cf ff bf ff da ff d4  ff e3 00 1a ff e1 00 0d   ........ ........
0220  00 10 00 00 00 0e 00 10  ff f7 00 11 00 08 00 31   ........ .......1
0230  ff fe 00 08 00 06 ff ed  ff ff ff d7 ff f3 ff fc   ........ ........
0240  ff d2 00 0e ff d7 ff fe  00 0f 00 1c 00 30 00 26   ........ .....0.&
0250  ff fe 00 1b 00 1e 00 14  00 01 00 0d 00 03 00 29   ........ .......)
0260  00 0b ff f5 00 07 ff f4  00 0a ff ed 00 00 00 0a   ........ ........
0270  00 16 00 2e ff eb ff f0  00 03 00 12 00 23 ff ff   ........ .....#..
0280  00 16 00 14 00 05 00 06  ff f6 ff eb ff f2 ff c8   ........ ........
0290  00 10 00 00 00 19 ff f0  00 2a 00 18 ff e0 ff ff   ........ .*......
02a0  ff f8 ff d6 ff f8 ff ef  ff e2 00 0e 00 10 00 0c   ........ ........
02b0  00 34 00 27 00 28 00 25  ff f4 ff f0 00 05 ff df   .4.'.(.% ........
02c0  00 18 ff ed ff ef 00 19  00 0d ff e2 00 1c 00 00   ........ ........
02d0  00 00 ff f9 00 17 ff f4  00 10 00 11 00 0a 00 3d   ........ .......=
02e0  00 2e 00 13 00 1b 00 0e  00 20 00 03 ff d8 ff db   ........ . ......
02f0  ff f8 ff d5 ff c1 ff e8  ff dd ff e5 ff eb 00 2a   ........ .......*
0300  ff c4 ff d7 00 0a ff d9  ff fd 00 0c ff f2 00 05   ........ ........
0310  ff dc ff ee 00 00 00 1f  00 1b 00 25 ff fe ff f2   ........ ...%....
0320  00 03 ff e2 00 0b 00 27  00 1a 00 0c ff fa ff f7   .......' ........
0330  ff fb 00 13 00 1e 00 0d  ff e1 00 00 00 0c ff f5   ........ ........
0340  00 53 00 18 00 3b ff c2  ff f9 ff de 00 0a 00 29   .S...;.. .......)
0350  00 03 00 0c 00 09 00 23  ff e8 00 21 00 04 00 18   .......# ...!....
0360  ff fc ff ed ff f0 ff bf  ff dd ff ef ff fc ff b4   ........ ........
0370  ff f3 ff bc ff c9 ff f7  ff c8 ff ea ff fc ff ef   ........ ........
0380  00 2d 00 28 ff fa 00 2d  00 09 00 00 ff f5 00 04   .-.(...- ........
0390  ff ec 00 02 00 05 ff f3  ff fa ff fb ff d6 ff d9   ........ ........
03a0  00 18 00 1d 00 18 00 3d  00 00 00 22 ff fd 00 0e   .......= ..."....
03b0  ff ff ff f9 00 23 00 20  ff f6 ff f5 ff f6 ff f9   .....#.  ........
03c0  ff fd ff e5 ff f5 ff e4  00 07 ff dd ff fc 00 0f   ........ ........
03d0  ff e8 ff ec ff be ff e7  00 0a 00 0f 00 01 00 18   ........ ........
03e0  ff e6 ff ff 00 05 ff e7  00 0a ff d3 00 0c 00 20   ........ ....... 
03f0  ff fa 00 17 ff f0 00 0d  ff fa 00 0a ff f7 00 0d   ........ ........
0400  ff f8 00 2c 00 09 00 08  00 03 ff dd 00 25 00 15   ...,.... .....%..
0410  00 17 00 13 ff e4 00 0c  00 08 ff f3 00 09 ff eb   ........ ........
0420  00 03 00 08 00 11 00 07  ff e0 ff e2 ff ce 00 23   ........ .......#
0430  ff f4 ff ea ff d2 00 04  ff fd 00 0b 00 20 00 20   ........ ..... . 
0440  00 07 00 15 00 24 00 2a  ff f4 00 18 00 19 00 0e   .....$.* ........
0450  00 15 ff de ff ef ff f6  00 06 00 04 00 09 ff d0   ........ ........
0460  00 0f ff e1 ff cf ff f6  00 2c 00 13 ff f3 00 03   ........ .,......
0470  ff d3 00 0f ff ff 00 20  ff e0 ff d9 00 03 00 08   .......  ........
0480  ff c7 ff d1 ff da ff b6  ff e5 00 04 00 0e ff f6   ........ ........
0490  00 09 00 03 00 15 00 1c  ff db 00 0f ff ee 00 1d   ........ ........
04a0  ff ec ff ff ff c5 ff c0  00 08 00 00 00 14 ff c5   ........ ........
04b0  ff ce ff ed 00 09 00 0d  00 06 00 16 ff f8 ff ef   ........ ........
04c0  ff c8 ff e2 ff da ff c3  ff e3 ff e0 ff f2 ff f1   ........ ........
04d0  ff fb 00 0a 00 1e 00 52  ff f7 ff de 00 26 00 07   .......R .....&..
04e0  ff fd ff db 00 12 ff e7  ff e7 00 03 00 1e ff e4   ........ ........
04f0  ff e9 ff d5 ff fd 00 07  00 06 00 1c 00 1b 00 0c   ........ ........
0500  00 0d ff f5 00 09 00 0f  ff f4 ff f2 ff ec ff de   ........ ........
0510  00 08 ff ff 00 27 00 0a  00 22 00 2f 00 1d 00 31   .....'.. ."./...1
0520  00 41 00 2a 00 01 00 34  ff f3 00 31 00 16 00 0d   .A.*...4 ...1....
0530  ff eb ff ef 00 11 ff d2  00 03 ff f2 00 10 ff df   ........ ........
0540  ff ff 00 26 ff df ff e6  ff d9 ff fc 00 05 00 1b   ...&.... ........
0550  00 04 ff e4 ff e4 ff d2  00 0e 00 09 00 29 ff ff   ........ .....)..
0560  00 08 ff fc ff e2 ff e6  00 22 00 01 ff f9 00 14   ........ ."......
0570  00 11 00 0a ff fe 00 02  ff fa ff f9 00 10 00 19   ........ ........
0580  ff f4 ff da 00 17 ff fb  ff f3 ff b5 ff d4 ff b9   ........ ........
0590  ff d6 ff e4 ff e5 ff e9  ff eb ff dd ff e7 ff de   ........ ........
05a0  ff e7 ff c9 ff be 00 02  ff ef 00 03 00 27 00 19   ........ .....'..
05b0  00 20 ff f1 ff f4 ff e0  ff fe 00 11 00 13 00 02   . ...... ........
05c0  ff f8 00 1c ff bf 00 01  ff ed 00 02 00 25 00 0f   ........ .....%..
05d0  00 2e 00 1b 00 33 ff e3  00 11                     .....3.. ..      


Doug Geiger wrote:
> 
> MarcW wrote:
>> I am trying to use wireshark to extract the timestamp from the received
>> ethernet packets to test my sync_every_pps() function is working. I have
>> located the word I need to extract from the received data but how can I
>> automatically extract this and display it as an integer in the display
>> window in wireshark?
>>
>> Alternatively, is there a better way to view the timestamp information to
>> check for a reset?
>>   
> You can either write a custom wireshark plugin to parse the packets (in 
> which case you'll want to consult with a better source of information on 
> wireshark - perhaps their mailing list), simply monitor the word 
> yourself, or you could write a c++ application that talks to libusrp2 
> directly and prints out the timestamp. I did at one point modify the 
> rx_streaming_samples application that is packaged with gnuradio to do 
> just that. But I've also used wireshark and simply watched for the reset 
> manually.
> Doug
> 
> -- 
> Douglas Geiger
> Code 5545
> U.S. Naval Research Laboratory
> Washington, DC 20375
> (202) 767-9048
> address@hidden
> 
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 

-- 
View this message in context: 
http://old.nabble.com/Viewing-timestamps-using-USRP2-tp27435137p27436785.html
Sent from the GnuRadio mailing list archive at Nabble.com.