Failed to initialize ros dji_vehicle_node.launch in M300
已完成I am using Dual A USB cable for the connection, but the drone could not seem to communicate with the onboard computer. Any help please
... logging to /home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/roslaunch-NUC10-7316.log
... logging to /home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/roslaunch-NUC10-7316.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://NUC10:40259/
SUMMARY
========
PARAMETERS
* /rosdistro: kinetic
* /rosversion: 1.12.17
* /vehicle_node/acm_name: /dev/ttyACM0
* /vehicle_node/align_time: False
* /vehicle_node/app_id: 1116668
* /vehicle_node/app_version: 1
* /vehicle_node/baud_rate: 921600
* /vehicle_node/enc_key: 786a3b58babdf8fed...
* /vehicle_node/serial_name: /dev/ttyUSB0
* /vehicle_node/use_broadcast: False
NODES
/
vehicle_node (dji_osdk_ros/dji_vehicle_node)
auto-starting new master
process[master]: started with pid [7326]
ROS_MASTER_URI=http://localhost:11311
setting /run_id to 61d07416-c14d-11ec-ab7b-1cbfcef0d4a6
process[rosout-1]: started with pid [7339]
started core service [/rosout]
process[vehicle_node-2]: started with pid [7354]
EnableAd: 1
[1262422.925]ERRORLOG/1 @ initVehicle, L153: Failed to initialize Linker channel
Init Vehicle Failed, TERMINATE!
[vehicle_node-2] process has died [pid 7354, exit code 1, cmd /home/aero/aero/catkin_ws/devel/lib/dji_osdk_ros/dji_vehicle_node __name:=vehicle_node __log:=/home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/vehicle_node-2.log].
log file: /home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/vehicle_node-2*.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://NUC10:40259/
SUMMARY
========
PARAMETERS
* /rosdistro: kinetic
* /rosversion: 1.12.17
* /vehicle_node/acm_name: /dev/ttyACM0
* /vehicle_node/align_time: False
* /vehicle_node/app_id: 1116668
* /vehicle_node/app_version: 1
* /vehicle_node/baud_rate: 921600
* /vehicle_node/enc_key: 786a3b58babdf8fed...
* /vehicle_node/serial_name: /dev/ttyUSB0
* /vehicle_node/use_broadcast: False
NODES
/
vehicle_node (dji_osdk_ros/dji_vehicle_node)
auto-starting new master
process[master]: started with pid [7326]
ROS_MASTER_URI=http://localhost:11311
setting /run_id to 61d07416-c14d-11ec-ab7b-1cbfcef0d4a6
process[rosout-1]: started with pid [7339]
started core service [/rosout]
process[vehicle_node-2]: started with pid [7354]
EnableAd: 1
[1262422.925]ERRORLOG/1 @ initVehicle, L153: Failed to initialize Linker channel
Init Vehicle Failed, TERMINATE!
[vehicle_node-2] process has died [pid 7354, exit code 1, cmd /home/aero/aero/catkin_ws/devel/lib/dji_osdk_ros/dji_vehicle_node __name:=vehicle_node __log:=/home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/vehicle_node-2.log].
log file: /home/aero/.ros/log/61d07416-c14d-11ec-ab7b-1cbfcef0d4a6/vehicle_node-2*.log
-
The log shows that the serial port initial failed. please check and comfirm the serial cable has been connected and the device name is correct.  -
The device name has been recongnized, about the sample running, please refer to the developer website: https://developer.dji.com/document/bec27bb7-9129-49d1-97bd-e18fb754d295 
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