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ArmFox V4 : GPS and Altitude Hold Work very Well with 800 hz main loop

Posted by Roberto Navoni on April 18, 2011 at 3:30pm

Updated Video

Dear Friends,

after my last fly in stable mode i update the i2c libs for compass and barometer , now is better of older versions so i can upgrade main core loop to 800 hz instead of standard 200 hz .

Above the resutls of my first automatic flight , i'm very happy of this first result .. i start to use the performances of our Multipilo32 Arm Cortex M3 processors.

More Performances = More stability.

The firmware will be available tomorrow on our repo.

check Official link for more info : http://www.virtualrobotix.com/profiles/blogs/armfox-v4-gps-and-altitude

the next step will be to test sonar and start to work on ACM ...

Best

Roberto

 

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Comments

  • Developer
    John Arne Birkeland April 20, 2011 at 8:20am
    Looking very good Roberto. I do now know the M3 architecture very well, but is there a way you could sample the gyros independent from the main loop? The reason I ask being that 800hz is a but on the low side for gyro sampling. There is more data available if you are able to integrate samples at 2000-3000hz.
  • Steve April 19, 2011 at 10:01pm
    What is the cost of the MP32?
  • Developer
    Randy April 19, 2011 at 8:16pm

    Looking good.  I guess keeping the NG/ACM code working on the ARM would be easier if we kept the base libraries using standard Arduino calls instead of Atmel specific code.

     

    Dataflash is a library that could likely be changed to use the standard SPI library instead of Atmel specific calls...though i think you don't have a dataflash on your board yet.

  • Moderator
    Roberto Navoni April 19, 2011 at 3:47pm

    Hi Jason , yes in my test i update the Gyro at 800 Hz . The code work fine and the quad is very stable .. good luck for Sparkfun contest.

    Best

    Roberto

  • Developer
    Jason Short April 18, 2011 at 9:17pm
    Looks nice Roberto. Are you sampling the Gyro at 800hz as well?
This reply was deleted.