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Expected behavior
No assertions occurs in the system
Actual behavior
os is out of available mutex resources, while application uses only 1.
all the rest seem to be consumed by os itself.
Steps to reproduce
Use of file system and serial port communication leads to 'out of mutex resources' in mbedOS
when bin is compiled with ARMCC toolchain.
(please see here: 1d4cd0a)
Current default number of allowed mutex resources (8) is not enough.
Also it is unclear how much mutexes are allowed to be used by user application
and how many are consumed by the os itself.