Dear colleagues, I have PX4 SITL Jmavsim running on Ubuntu computer, ip address is 192.168.1.17
I try to connect to this SITL from Raspberry PI onboard computer via ethernet.
Mavros connection with roslaunch mavros px4.launch fcu_url:="udp://@192.168.1.17:14580" works OK - I get valid mavlink heartbit with rostopic echo /mavros/state
But my attempt co connect to same SITL via pymavlink did not succeed.
tcp connection: the_connection = mavutil.mavlink_connection('tcp:192.168.1.17:14580', autoreconnect=True, retries=10)
throws “Connection refused” error:
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
[Errno 111] Connection refused sleeping
Traceback (most recent call last):
File "test_pymavlink.py", line 26, in <module>
retries=10) #, dialect = 'standard')
File "/home/pi/.local/lib/python3.7/site-packages/pymavlink/mavutil.py", line 1676, in mavlink_connection
use_native=use_native)
File "/home/pi/.local/lib/python3.7/site-packages/pymavlink/mavutil.py", line 1192, in __init__
self.do_connect()
File "/home/pi/.local/lib/python3.7/site-packages/pymavlink/mavutil.py", line 1212, in do_connect
raise e
File "/home/pi/.local/lib/python3.7/site-packages/pymavlink/mavutil.py", line 1205, in do_connect
self.port.connect(self.destination_addr)
ConnectionRefusedError: [Errno 111] Connection refused
Although mavros connects OK to the same SITL. Mavlink status is:
instance #0:
mavlink chan: #0
type: GENERIC LINK OR RADIO
flow control: OFF
rates:
tx: 12.822 kB/s
txerr: 0.000 kB/s
tx rate mult: 1.000
tx rate max: 4000000 B/s
rx: 0.000 kB/s
FTP enabled: YES, TX enabled: YES
mode: Normal
MAVLink version: 1
transport protocol: UDP (18570, remote port: 14550)
instance #1:
mavlink chan: #1
type: GENERIC LINK OR RADIO
flow control: OFF
rates:
tx: 14.407 kB/s
txerr: 0.000 kB/s
tx rate mult: 1.000
tx rate max: 4000000 B/s
rx: 0.000 kB/s
FTP enabled: YES, TX enabled: YES
mode: Onboard
MAVLink version: 1
transport protocol: UDP (14580, remote port: 14540)
instance #2:
mavlink chan: #2
type: GENERIC LINK OR RADIO
flow control: OFF
rates:
tx: 2.875 kB/s
txerr: 0.000 kB/s
tx rate mult: 0.141
tx rate max: 4000 B/s
rx: 0.000 kB/s
FTP enabled: YES, TX enabled: YES
mode: Onboard
MAVLink version: 1
transport protocol: UDP (14280, remote port: 14030)
Did anyone connect to PX4 SITL on external IP address with pymavlink?