I am using the above kit and trying to set or clear the registers as per Infineon-ReferenceManual_XMC4700_XMC4800-UM-v01_03-EN.pdf most of the registers are not working
ex: trying to clear the PSR bits by setting the corresponding bits of PSCR bit and it is not working.

Do the processor mode to be set to supervisory mode to do this operation if then then please suggest how to do it.