The code generated using ROS custom message in MATLAB R2021a is wrong
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When the ROS custom message name contains uppercase letters and underscores, the generated code is wrong. In the file slros_busmsg_conversion.cpp, for example, the custom message member is named float32 DataY. In the function converFromBus generated by MATLAB R2021a, msgPtr-> DataY becomes msgPtr->data_y, which is the correct msgPtr->DataY in MATLAB R2020b.
Abhijeet Gadkari on 20 Jul 2021
This is a known problem that was fixed in R2021a update1.
Please refer to this bug-report for more details.
Please install R2021a update 1 and generate code again.
Let us know if this resolved the issue.