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

Subject: Re: [Paparazzi-devel] On board data logging using TWOG
Date: Thu, 6 Dec 2012 18:43:02 +0530

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"/>
to your messages.xml and to your source (plus the stuff mentioned below).
You can then just enable it by loading the openlog module in your airframe:
   <load name="openlog.xml"/>

Then it should work.



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: .
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 - It creates TLM files and you can proceed like described in



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.



De : paparazzi-devel-bounces+spam1=address@hidden [mailto:paparazzi-devel-bounces+spam1=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


  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?

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