Add TMC driver HW serial defines #17909
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Update STM32F103R* tests to ensure coverage for both HW and SW serial drivers
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Update STM32F103R* tests to ensure coverage for both HW and SW serial drivers
Description
Add a macro to identify HW Serial for TMC drivers. Use this to selectively disable the sp_helper which is generating compiler warnings due to unused variables.
Benefits
Fewer warnings to squelch complaints and make new issues easier to spot.
Related Issues
These were both closed after being told to ignore warnings. While safe in this case, I prefer to work toward zero warnings, with the ideal being that warnings are treated as failuers.
#17899
#17506