Raspberry Pi 3 model B
It has APSYNC installed on it
https://ardupilot.org/dev/docs/apsync-intro.html
I can SSH into the Raspi with putty
Raspi communicates with pixhawk by rx tx pins
Traceback (most recent call last):
File "src/connect_drone.py", line 94, in <module>
set_servo(1999.5)
File "src/connect_drone.py", line 70, in set_servo
0, 0, 0, 0, 0)
File "/Users/berkeyvx/Desktop/Developer/Python/dronekit/venv/lib/python2.7/site-packages/pymavlink/dialects/v10/ardupilotmega.py", line 15559, in command_long_send
return self.send(self.command_long_encode(target_system, target_component, command, confirmation, param1, param2, param3, param4, param5, param6, param7), force_mavlink1=force_mavlink1)
File "/Users/berkeyvx/Desktop/Developer/Python/dronekit/venv/lib/python2.7/site-packages/dronekit/mavlink.py", line 146, in newsendfn
return sendfn(mavmsg, args, *kwargs)
File "/Users/berkeyvx/Desktop/Developer/Python/dronekit/venv/lib/python2.7/site-packages/pymavlink/dialects/v10/ardupilotmega.py", line 11857, in send
buf = mavmsg.pack(self, force_mavlink1=force_mavlink1)
File "/Users/berkeyvx/Desktop/Developer/Python/dronekit/venv/lib/python2.7/site-packages/pymavlink/dialects/v10/ardupilotmega.py", line 8585, in pack
return MAVLink_message.pack(self, mav, 152, struct.pack('<fffffffHBBB', self.param1, self.param2, self.param3, self.param4, self.param5, self.param6, self.param7, self.command, self.target_system, self.target_component, self.confirmation), force_mavlink1=force_mavlink1)
struct.error: required argument is not a float
getting this error
cause of this lines
def set_servo(PWM):
msg = vehicle.message_factory.command_long_send(
0, 0,
mavutil.mavlink.MAV_CMD_DO_SET_SERVO, 0,
'5', PWM,
0, 0, 0, 0, 0)
vehicle.send_mavlink(msg)
print vehicle.channels.get('5')
What is wrong
def set_servo(port, PWM, duration):
"""
port -> port where the servo is attached
PWM -> servo ms value, from 1000 - 2000
"""
msg = vehicle.message_factory.command_long_encode(
0, 0,
mavutil.mavlink.MAV_CMD_DO_SET_SERVO, 0,
port, PWM,
0, 0, 0, 0, 0)
while this code had no error, still no changes on channel[port]. Function doesnt work. What is wrong
Hi there everyone. I have tried to create simple python script to arm and disarm SITL rover with pymavlink. I can successfully arm, but not able to disarm. I have put it into a Gist available here (https://gist.github.com/benboughton1/b5b12130f0448ecef928d8a30c84c4e8) and also posted to the Ardupilot forums (https://discuss.ardupilot.org/t/pymavlink-arm-disarm-script-help/51667).
I've looked at both MavProxy code and Ardupilot autotest and I cannot see anything too different. When I connect to this SITL instance with MavProxy it is able to Arm and Disarm no problems.
P.S - i have already tried sending heartbeat "mas.mav.heartbeat_send(mavutil.mavlink.MAV_TYPE_GCS, mavutil.mavlink.MAV_AUTOPILOT_INVALID,0,0,0)" and also used this - "mas.mav.request_data_stream_send(1,1,mavutil.mavlink.MAV_DATA_STREAM_ALL,4,1)".
Please help if anyone has solved this issue
wait_heartbeat()] like this we can check the connection, but there is a problem like, won't be receiving an acknowledgement if there is no connection. In programing point this gives trouble by struck in this line when there is connection isssue and waiting for heartbeat. Is there any other API to check the connection instantly connected or not connected. or any other better way to check connection. @Davidsastresas (i hope u can help in this point)
master.target_system, master.target_component,
mavutil.mavlink.MAV_CMD_CONDITION_YAW,
0,
90, 5, 1, 0, 0, 0, 0) am getting result 3 and cant able to get the yaw . can anyone help
Hi, I'm working in a UTM (https://github.com/portableutm/dronfiesuss) and I need integrate it with mavlink.
In particular I want to define a new messages, for do that use mavgen as described in https://mavlink.io/en/getting_started/generate_libraries.html
The problem is that I don't know how use the generated py file with pymavlink. Is there a tutorial that shows how to use it?
Thanks
2 replies
4 replies
Hi, I am noob to programming. I am trying to send custom messages from ardupilot to GCS. I read the documentation from here https://ardupilot.org/dev/docs/code-overview-adding-a-new-mavlink-message.html.
i added this to ardupilotmega.xml in ardupilot/modules/mavlink/pymavlink/dialects/v20/ardupilotmega.py
<message id="3001" name="CUSTOM_DATA">
<description>Drone Data</description>
<field type="char[50]" name="text">Status text message, without null termination character</field>
<extensions/>
<field type="uint16_t" name="id">Unique (opaque) identifier for this statustext message. May be used to reassemble a logical long-statustext message from a sequence of chunks. A value of zero indicates this is the only chunk in the sequence and the message can be emitted immediately.</field>
<field type="uint8_t" name="chunk_seq">This chunk's sequence number; indexing is from zero. Any null character in the text field is taken to mean this was the last chunk.</field>
</message>and i reinstalled the updated pymavlink version from ardupilot.
But when I run this code this code I receive this error AttributeError: 'MAVLink' object has no attribute 'custom_data'.
This is the snippet.
from pymavlink import mavutil
import time
from pymavlink.dialects.v20 import ardupilotmega as mavlink2
the_connection = mavutil.mavlink_connection('udpout:localhost:14550')
while True:
txt = "yaaaaaaa"
the_connection.mav.custom_data_send(txt)
time.sleep(2)Any help would be appreciative.
2 replies
