ROS2 subscribe IsNew output remains true even if no new messages are received

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Callum
Callum 2023 年 2 月 23 日
コメント済み: Callum 2023 年 2 月 27 日
I am running a 2021b code generated simulink model in ubuntu and need to use the IsNew funcionality of the ROS2 subscribe blocks.
However, I am finding that intially the IsNew output is false, but as soon as a message is received on the topic, the output goes True and stays True even if no more messages are received. I have tried with different QoS settings with no change in behaviour.
Has anyone else run into this issue and has a solution/workaround?
Thanks

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Josh Chen
Josh Chen 2023 年 2 月 24 日
Hello Callum,
This is a known issue in 2021b and earlier version of MATLAB. Please update your MATLAB to at least 2021b Update 4 from this Error bug report link and try to generate code again.
Best,
Josh

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