Thumb state to ARM sate

Question

Hello, 
 When starting debug in all Rensas demos, I need to write 0 to the T bit of the CPSR register via the debug interface. How do I switch the RZ/T2M processor from Thumb mode to arm mode software?

JimB · Answer

There should be no need to manually switch between ARM/Thumb modes, this is handled by the function calls at run-time that are fixed up by the compiler / linker during the build process. The debugger should simply follow along with the mode of the device as it switches during run-time when function calls are made.