Re: [Paparazzi-devel] Connect AR Drone 2.0 through router, then multiple drones

[cTrippen]

Good morning Gautier,
 I ran the configure_network via telnet and am now able to connect to the
router and ping the ard2. GOLD :)

 I opened PPRZ and changed the AC_ID to 10, and selected the
ENAC/quadrotor/ard2_basic.xml as the airframe file. This is the airframe
file that I modified earlier. The build failed with the following message -

Fatal error: exception Failure("File not found:
conf/airframes/ENAC/quadrotor/ard2_10.xml")
make[1]: ***
[/home/ct/paparazzi/var/aircrafts/ardrone2/ap/generated/airframe.h] Error 2 

 Then I swapped back to the examples/ardrone2.xml airframe file,
     added the configure_name="HOST" name="192.168.2.$(AC_ID)" line, and
build went through. The GCS then was held up at "waiting for telemetry".
 I am thinking that the adr2 either can't talk back or is stuck within it's
own code. 

 Also, if I wanted to configure the ard2 back to its original network setup,
can I run the configure_network script and take out the host reference in
the airframe file?

 As an aside, if you did actually have the incorrect name for the SSID,
instead of fixing via console, if you new what SSID you gave the drone,
could you just rename your router to match and then connect?

 Happy to update the wiki once I know what to put up there (and how to do
the update) :)
 
Thanks again
 Carl


Gautier Hattenberger-3 wrote
> Hi,
> 
> The 2013 document is probably completely outdated now, so don't rely to 
> much on it.
> 
> Here is my situation to connect several ARDrones:
> 
> - First, you can run the configuration script independently of anything. 
> The script is located in the sw/tools/parrot folder on the ground 
> station, and it is in fact doing a mix of telnet/ftp commands to produce 
> the required changes (getting/settings parameters, executing commands, 
> uploading/downloading files).
> 
> let's say your router has IP 192.168.2.254 with SSID 'wifiNetworkName' 
> and your drone has 192.168.2.10. You can choose the AC_ID (from the 
> paparazzi center, top left part) to be 10, it can help later but it is 
> not mandatory. The script command would be:
> 
> ./ardrone.py configure_network wifiNetworkName 192.168.2.10 managed
> 
> say 'yes' if it asks to update the wifi script if not done before and 
> restart the drone with the router running. After boot, it should connect 
> to the router, check with 'ping 192.168.2.10'. If it fails (wrong SSID 
> usually), you'll need to connect to the drone using the direct serial 
> console (http://wiki.paparazziuav.org/wiki/AR_Drone_2#Console_Fixing) 
> which is really annoying (that's why there is a warning).
> 
> - Then you need to configure the airframe to define the drone IP (HOST 
> parameter):
> 
> <configure name="HOST"
> name="192.168.2.$(AC_ID)"/>
> 
> if AC_ID is equal to the last number of the address (with this you can 
> also reuse the same airframe file for several drones if their IP is 
> following the same principle), or:
> 
> <configure name="HOST" name="192.168.2.10"/>
> 
> to fix the value.
> 
> Now the GCS should know where to send the autopilot code (based on HOST 
> param). In the other direction, the drone is broadcasting an UDP stream, 
> so it is not needed to know the GCS IP.
> 
> I hope this clarify a bit. Don't hesitate to improve the documentation 
> on the wiki.
> 
> Gautier
> 
> 
> Le 16/03/2017 à 08:38, cTrippen a écrit :
>> Hi there Gautier,
>>   Thank you for the reply.
>>   I would like to confirm a few things, if I may.
>>   At what point do you use the configure script? In the IMAV2013
>> document, it
>> telnets the whole command to the drone once paparazzi is loaded to it. Is
>> this the same point where I use the configure script? or can I set these
>> things before build/upload? I have telnet'd to the drone post upload but
>> couldn't find the file.
>>
>>   My proposed command will be -
>>   ardrone.py configure_network --channel auto wifiNetworkName
>> desiredDroneIP(192.168.2.10) managed
>>
>>   Regarding the airframe file, ard2_basic.xml, my router IP is
>> 192.168.2.254,
>> so the entry in the file will be -
>>
>>       line 7       
> <configure name="HOST" value="192.168.2.$(AC_ID)"/>
>>
>>   Is the allocation of IP to the drone dynamic? and therefore successive
>> drones will be numbered in sequence? or does the $(AC_ID) retain its
>> current
>> number? In which case, I will have to configure their default IP.
>>   
>>   Also, do I need to select this airframe file in the GCS? I am currently
>> using the ardrone2.xml from the examples folder.
>>
>>   Regarding your warning, 'trouble to connect after restart', is that
>> only if
>> choosing the 'autostart' option?
>>
>> Thanks again
>> Carl
>>
>>
>>
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