MAVROS and mavproxy aren't working together

ArduCopter Copter 4.0
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1

Hi,
I am running mavros using this command

roslaunch mavros apm.launch fcu_url:=/dev/ttyTHS0:921600

and mavproxy with the following command

mavproxy.py --master=/dev/ttyTHS0 --baudrate 921600 --aircraft MyCopter

The mavros stops working

thanks

2

Serial ports can only be assigned to 1 program at a time. They can’t be shared.

3

if anyone is looking for a solution, this answer helped me