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CCS/TMS320F280049: Single step execution timing

Part Number: TMS320F280049
Other Parts Discussed in Thread: ADS1248

Tool/software: Code Composer Studio

Hi Team,

While trying to do SPI communication with ADS1248 using 280049 I observed the following.

As shown above if I am running the code as whole program this happens, my variables value showing as zero all the time.

At the same time if am executing the code in single step mode (F5/F6) I am able to get register values as shown. Why this happens? if am declaring the a variable as global variable that is out side any function, it's status is not showing in the variable value section. If am executing a function only local variable int that function is showing in the register section. Is there any way to see all variables at once?

280049 works in 100 MHz and SPI clock speed is 1 MHz.