Hi !
I would like to handle interrupt on secure side.
When interrupt occurs, I should be able to call function on nonsecure side ( from Isecure SR context ) and it will send message to FreeRTOS task.
If interrupt handled on nonsecure side, it is not a problem to send message to RTOS becouse it run on nonsecure side also.
I have check all SDK examples and always all calls from nonsecure to secure side.
But how to compose this call :
• BXLNS: Branch with Link Exchange Non Secure - calls a subroutine in NS memory.
On executing either the BXNS or BXLNS instructions the CPU-S will also change to the
Non-secure state (CPU-NS) and thus be in the correct state for executing out of NS
memory.
How secure side can know where known function located on nonsecure side ?
If secure side in ISR context , does nonsecure will look as in ISR context and I should use freertos function for ISR context ?
Regards,
Eugene
