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AM2634: STREXEQ Register (attempt to store new value) is not working

Panda Bear
Intellectual 375 points

Part Number: AM2634

Hello Ti

We have recognized STREXEQ R5, R0, [R1] instruction is not working on R5F(AM2634) . We cannot set and reset  on this register. This happens, when we implement inter core spinlocks on Cortex-R5F. Our operation system is FreeRtos SMP. Here some Screenshots:

Here are the testing functions for lock and unlock:

Sitara R5F cannot set Lock. 

could you explain why Sitara R5F cannot set it ? Or are there something else?

Best Regards