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Hello everyone,
I am trying to use printf via ITM-Port (Debug (printf) Viewer) within an RTX-Application on a STM32F103.
Here is what happens:
The message is written to the viewer window, but after writing the first messag it falls into the hard fault handler. After the message is displayed it calls _mutex_acquire (the standard implementation in RTX_lib.c) where mutex_wait (what is a define for _os_mut_wait) is called. It is the first time _mutex_acquire is called. mutex_wait is a SVC-Call. According to the call stack window the SVC_handler (I assume mutex_wait) calls rt_mut_wait where the HardFault occures. I noticed that _mutex_initialize seemes not to be called. The hard fault handler is called because I haven't activated any other handlers. The fault reports say that there is an IMPRECISERR bus fault.
Any idea how to make it work?
Many thanks in advance and best regards Alex