Information extraction on the Raspberry Pi stops automatically

Blue Robotics Software ArduSub
2

Yes, port 9000 is set up in mavproxy as a udp input, which is useful for things like sending a sensor reading to it for it to pass to the autopilot or up to QGC. If you want to get readings from it repeatedly then you’ll need to send it regular updates, e.g.

import time
import math
from pymavlink import mavutil

def wait_conn():
    """
    Sends a ping to stabilish the UDP communication and awaits for a response
    """
    msg = None
    while not msg:
        master.mav.ping_send(
            int(time.time() * 1e6),
            0,
            0, # Request ping of all systems
            0 # Request ping of all components
        )
        msg = master.recv_match()
        time.sleep(0.5)

def send_heartbeat():
    """
    Sends a heartbeat message to continue getting telemetry updates.
    """
    master.mav.heartbeat_send(
        mavutil.mavlink.MAV_TYPE_ANTENNA_TRACKER, # something that just listens
        mavutil.mavlink.MAV_AUTOPILOT_INVALID, # not an autopilot
        0, 0, 0
    )

def get_attitude(timeout=0.1):
    return master.recv_match(type='ATTITUDE', blocking=True, timeout=timeout)

master = mavutil.mavlink_connection('udpout:0.0.0.0:9000')
wait_conn()
print("connection successful")

t=0
while True:
    # get the latest attitude data
    message = get_attitude()
    while message is None:
        send_heartbeat()
        message = get_attitude()
    message = message.to_dict()
    
    # do something with it
    print("{:>5} -- pitch:{:.1f}, roll:{:.1f}, yaw:{:.1f}, pitchspeed:{:.3f}, rollspeed:{:.3f}, yawspeed:{:.3f}".format(
        t,
        math.degrees(message['pitch']),
        math.degrees(message['roll']),
        math.degrees(message['yaw']),
        message['pitchspeed'],
        message['rollspeed'],
        message['yawspeed'])
    )
    
    # track progress
    t += 1
    time.sleep(0.1)
Raspberry pi and Attitude adjustment