pietrodn
commented
6 years ago I had the same problem when trying to use mavproxy together with DroneKit. You should not run both DroneKit and mavproxy at the same time on the same serial port.
Open jmorley1 opened 6 years ago
pietrodn
commented
6 years ago I had the same problem when trying to use mavproxy together with DroneKit. You should not run both DroneKit and mavproxy at the same time on the same serial port.
Hello all, I would really appreciate some help.
I currently have my Odroid XU4 connected to my pixhawk mini via a FTDI usb to serial converter (as per the tutorial found here: http://ardupilot.org/dev/docs/odroid-via-mavlink.html)
Basically, serial connection from telem port to a serial to USB converter to the Odroid.
In QGroundControl I also changed the SYS_COMPANION parameter to enable the TELEM port as the companion computer link and set the baud rate to 57600. I then saved and rebooted the pixhawk.
I then powered up my Odroid and plugged in the serial converter to a USB port.
Upon running:
sudo -s mavproxy.py --master=/dev/ttyUSB0 --baudrate 1500000 --aircraft MyCopteri receive:
Connect /dev/ttyUSB0 source_system=255 no script MyCopter/logs/2012-12-31/flight2 Log Directory: MyCopter/logs/2012-12-31/flight2/flight.log MAV> Waiting for heartbeat fro /dev/ttyUSB0 online system 1 MANUAL> Mode MANUAL UZ2dAPM: data link #1 lost APM: data link #1 regained 2_ROTfence breach TC_G2_ID:Received 554 parametersX N6eRC_TH_USERENS_DPRES_ANSC i&3_0 Saved 555 parameters to MyCopter/logs/2012-12-31/flight2/nav.parm MANUAL>
Obviously there are some bits of the output that are junk... these junk outputs vary each time i run the command. I do not understand why this happens.
I verify the connection by entering
linkand i receiveMANUAL> link 1 OK (1353 packets, 0.00s delay, 17 lost, 1.3% loss):In a separate terminal I run the following script to connect to the pixhawk using Dronekit .
import dronekit from dronekit import connect connection_string = '/dev/ttyUSB0' vehicle = connect(connection_string, wait_ready=True, baud=57600)
At which point in the terminal where i ran the mavproxy.py command I see a few random letters and numbers pop up randomly (happens after i run the connection script?). The terminal where I ran the connection script outputs:
I also tried running the quick start example on the dronekit website:
print "Start simulator (SITL)" import dronekit_sitl sitl = dronekit_sitl.start_default() connection_string = sitl.connection_string() from dronekit import connect, VehicleMode
print("Connecting to vehicle on: %s" % (connection_string,)) vehicle = connect(connection_string, wait_ready=True)
print "Get some vehicle attribute values:" print " GPS: %s" % vehicle.gps_0 print " Battery: %s" % vehicle.battery print " Last Heartbeat: %s" % vehicle.last_heartbeat print " Is Armable?: %s" % vehicle.is_armable print " System status: %s" % vehicle.system_status.state print " Mode: %s" % vehicle.mode.name # settable vehicle.close() sitl.stop() print("Completed")
to which I recieve the following error:
Starting copter simulator (SITL) SITL already Downloaded and Extracted. Ready to boot. Traceback (most recent call last): File "simple_goto.py", line 33, in sitl = dronekit_sitl.start_default() File "/usr/local/lib/python2.7/dist-packages/dronekit_sitl/init.py", line 341, in start_default sitl.launch(sitl_args, await_ready=True, restart=True) File "/usr/local/lib/python2.7/dist-packages/dronekit_sitl/init.py", line 271, in launch p = Popen([self.path] + args, cwd=wd, shell=sys.platform == 'win32', stdout=PIPE, stderr=PIPE) File "/usr/lib/python2.7/subprocess.py", line 710, in init errread, errwrite) File "/usr/lib/python2.7/subprocess.py", line 1327, in executechild raise child_exception OSError: [Errno 8] Exec format error
Can anyone help me understand these errors or perhaps share their experience in connecting the a pixhawk to the Odroid XU4? Anything would be greatly appreciated.. thank you!