Moderator

Still having some problems v2.7.1

Using latest zip (v2.7.1), FMA XYZ IR sensors, v2 shield,Mediatek GPS, 148cm (58") span OD twin boom pusher plane with manual throttle control, no telemetry, Arduino v0020

I've been trying to get this flying and navigating correctly, had it all working pretty well 2 weeks ago, just needed to tweak some of the parameters, but now something's wrong. Changes made to the code seem to have no effect on the plane's behavior despite uploading success with my FTDI module

This is what I get from the serial monitor:

Init Ardupilot 2.7.1
CUR:    0,    0,    0
NWP:1,    -261527080,    279785670,    160800
Radio in A: 1500    E: 1500    T :1100    R :1500
freeRAM: 854
MSG Startup: Ground
$PGCMD,16,0,0,0,0,0*6A
WP Total: 6
home:     -261099420    280091550    157800
wp #1    -261527080    279785670    3000
wp #2    -261526450    279789970    3000
wp #3    -261516770    279792810    3000
wp #4    -261513640    279789810    3000
wp #5    -261512680    279784170    3000
wp #6    -261514940    279780520    3000
 
MSG Ready to FLY.
failed Checksum
init home
CUR:    -261099360,    280088620,    157880
NWP:1,    -261527080,    279785670,    160880
that's it, nothing more

Any ideas?

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Replies

  • Developer
    The mediatek parser has a harmless bug at startup that will cause 1 or 2 failed checksums. It's minor and all reads from then on should not fail.

    If you have the GCS set to none, you shouldn't receive any more data after the ready message.

    OK, you're setting
    #define DEBUG_SUBSYSTEM 4

    change to
    #define DEBUG_SUBSYSTEM 0

    before you try and fly.
  • Moderator
    The GPS debug test seems to output correct GPS data so perhaps it's not that. Otherwise I've checked everything that I can think of... - still no change
  • Moderator
    Any ideas for the "failed checksum"? It seems that only the Mediatek GPS has that code so perhaps my GPS has gone potty?

    I still have the problem that changes to the code uploaded to AP seem to have no effect i.e. if I change "#define HEAD_MAX 2500" to "6000" there is no bank angle change in FLY_BY_WIRE_A mode!
  • Developer
    Can you post your config file?
    Thanks,
    Jason
  • Developer
    What ground control station are you using? (set in the code) even though you dont have telemetry
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