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I have a rudimentary question.
I can not find an explanation of how to switch to user mode.
How do I switch to user mode?
Best Regards.
Thank you for your support.
By enabling OS with HalCoGen, I could find a code that seems to be in user mode.
I think below,this is correct ?
< #define portRESET_PRIVILEGE( xRunningPrivileged ) if( xRunningPrivileged == 0 ) portSWITCH_TO_USER_MODE() >
However, this code can not be found on disabling OS.
I do not want to use OS in my system.
Can I change the mode to the user while OS is disabled?
Hi,
You can use the following assembly instruction to switch to user mode
CPS #0x10
You can use the CPS instruction to switch to any mode. Refer Cortex R4 Technical Reference Manual for more details.
Note: This instruction cannot be used in user mode. So, if you want to switch from User mode to any other privileged mode, you may need to do a SWI call, enter the supervisor mode and then do the switch in the SWI handler.
Hope this helps!
Thanks and Regards,
Veena