Hi All!!. I am facing this weird issue with my STM32F411RE series eval board. And i am getting HardFault on UART initialize.

[ambinabhi]

I enable freeRTOS (CMSIS_v2) middleware , trying to play around with threads. One of the thread has simple UART transmit function sending some sample message. As soon as the debugger reaches UART_Transmit functions it goes to HardFaultHandler and thread basically terminates itself. It works perfectly fine with CMSIS_v1 though. The problem is with v2. Anybody faced this issue ?

Any help would be much appreciated.

[Tesla DeLorean]

One would normally look at the faulting instructions and deduce the failure cause.

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Floating point maths used, FPU not enabled.

Stack size or alignment.

Structure partially filled, or bad pointers.

Uninitialized auto/local variable.​

IRQ Handler.​

[ambinabhi]

I see no such problems as i am trying to debug it.

It works perfectly fine when cmsis v1 selected.

[Tesla DeLorean]

The processor provides specific details about its objections.

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Check if RTOS prevents execution of privileged instruction.​