Re: [Paparazzi-devel] On board data logging using TWOG

[Stephen Dwyer]

Hello Guruganesh,

I have never used the openlog logger, but I think you just need to
copy the log.TXT file off of your uSD card, then run openlog2tlm:
$ cd path/to/paparazzi/sw/logalizer/
$ ./openlog2tlm path/to/inputfile.TXT path/to/desired/outputfile.TLM

After this, run the sd2log program:
$ ./sd2log path/to/desired/outputfile.TLM

Then you should get a *SD.data and *SD.log file in the
paparazzi/var/logs/ folder.

Again, I have never done this, so it is just a guess from looking at
the code. You only need the openlog module running on the autopilot
when actually logging data during a flight (i.e. you don't need any of
that when parsing out the log file...)

Hope that helps.

Thanks,
-Stephen Dwyer

On Thu, Dec 6, 2012 at 6:13 AM, GURUGANESH R <address@hidden> wrote:
> Hi Christoph,
>    Some time in the month of March 2012 you replied to my mail regarding
> data logging on TWOG board. I have now connected the open log module in the
> UART port of Radio Modem, Before powering up the autopilot board,  the micro
> SD card was empty and now I could see a file with an extension *.TXT.
>
>  How to convert the text file to .tlm file and in trun to .log and .data
> files. i have all the codes openlog2tlm.c and sd2log.c in the paparazzi
> logalizer folder, but i not very clear how will i extract the dump in these
> format. U have also mentioned that "The openlog Module has to be loaded for
> use", what exactly u mean by that. Do i need to power up the autopilot to
> read the data and convert in to required format, or can i do it in the
> terminal mode  without the autopilot or the open log module.Kindly help me
> out.
>
> Thanks and regards
> Guruganesh R
>
>
> On Fri, Mar 2, 2012 at 5:29 PM, Christoph Niemann <address@hidden>
> wrote:
>>
>> I forgot:
>>
>> you have to add
>>
>>  <message name="OPENLOG_TIMESTAMP" id="59">
>>
>>    <field name="timestamp" type="uint32"/>
>>  </message>
>>
>> to your messages.xml and
>> https://github.com/chni/paparazzi/blob/master/conf/modules/openlog.xml to
>> your source (plus the stuff mentioned below).
>> You can then just enable it by loading the openlog module in your
>> airframe:
>>
>>   <modules>
>>    [...]
>>    <load name="openlog.xml"/>
>>
>>   </modules>
>>
>> Then it should work.
>>
>> Cheers
>>
>> Christoph
>>
>>
>>
>>
>>
>> 2012/3/2 Christoph Niemann <address@hidden>
>>>
>>> Hi guys,
>>>
>>> last year I had a similar problem. I solved it by using an OpenLog from
>>> Sparkfun. Thats less expensive than a second AP and is smaller as well. I
>>> hooked it into the UART lines for the Radiomodem. I wrote a simple module,
>>> you can find it here:
>>> https://github.com/chni/paparazzi/tree/master/sw/airborne/modules/openlog .
>>> It just includes a timestamp into the datastream every 500ms. Then to
>>> extract the data, I wrote a small tool that an be found here
>>> https://github.com/chni/paparazzi/blob/master/sw/logalizer/openlog2tlm.c -
>>> It creates TLM files and you can proceed like described in
>>> http://paparazzi.enac.fr/wiki/Data_Logger
>>>
>>> Cheers
>>>
>>> Christoph
>>>
>>> 2012/3/2 Cédric Marzer <address@hidden>
>>>>
>>>> I am trying to use the sparkfun logger (the one with the LPC2148).
>>>>
>>>> I haven't been able to make it work so far but it shouldn't be so
>>>> difficult (but I could install the paparazzi bootloader).
>>>>
>>>> Maybe the guys with a better knowledge of the code might help me a
>>>> little here.
>>>>
>>>> Should I define a new board ? I need for instance to redefine the led
>>>> pins…
>>>>
>>>> Any help appreciated.
>>>>
>>>> Cédric
>>>>
>>>>
>>>>
>>>> De : address@hidden
>>>> [mailto:address@hidden De la part de
>>>> GURUGANESH R
>>>> Envoyé : vendredi, 2. mars 2012 11:39
>>>> À : address@hidden
>>>> Objet : [Paparazzi-devel] On board data logging using TWOG
>>>>
>>>>
>>>>
>>>> Hi,
>>>>   I have  few doubts regarding paparazzi AP
>>>> 1) Please tell me how to do on board data logging when I am using
>>>> paparazzi TWOG Autopilot board on my Micro Aerial Vehicle? I believe people
>>>> might have already done this exercise. I know the Umarim board comes with a
>>>> data logger but In case if i am using any of the tiny board what are the
>>>> feasible options for on board data logging? Anybody please help me out.
>>>>
>>>> 2) I wanted to measure the motor/Propeller RPM, from the Internet I
>>>> found Eagle tree has one Brush less RPM sensor to measure the
>>>> motor/Propeller RPM, Does paparazzi board has provision to accept this RPM
>>>> sensor measurement as Input? If yes how to do that?
>>>>
>>>> --
>>>> Thanks and Regards
>>>> R.Guruganesh
>>>>
>>>>
>>>> _______________________________________________
>>>> Paparazzi-devel mailing list
>>>> address@hidden
>>>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>>>>
>>>
>>
>>
>> _______________________________________________
>> Paparazzi-devel mailing list
>> address@hidden
>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>>
>
>
>
> --
> Thanks and Regards
> R.Guruganesh
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>