Symbol 'SysTick_IRQn' could not be resolved
Bernard,
Hmm... I’m still not too familiar with Eclipse. And, if read how many threads were created about this problem, not too many people know Eclipse in details 
And, BTW,
‘’To solve this error, you should request that System Workbench do not parse files that are not used by your project, by opening th eindexer properties dialog (project >> Properties >> C/C++ General >> Indexer) then check the Enable project specific settings checkbox and uncheck the Index unused headers checkbox.
You may also suppress indexing of unused headers for all projects that do not have project-specific indexer settings by modifying the workspace settings at Window >> Preferences >> C/C++ >> Indexer.’’
I could not find anything about indexer at these paths...
Nevertheless, seems like this option set be default now.
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