Use of CalibrateTimer() fn

[shankar-vv]

Hi,

I am using STM32L073 MCU for my application. After porting everything to this MCU and running the application I noticed something.

If I use Debugger , then my code will always loop inside the while loop in CalibrateTimer fn.
If I don't use debugger, this issue is not seen. I use USB_POWER, so not entering the low power mode.

Can any one tell me why this is happening.
What is the real purpose of CalibrateTimer() fn.