I was trying to debug a simple LED blinking program using Keil for Tiva C series controller. It worked fine using Logic analyzer. When I tried to inspect data register of PortF (Peripherals ->System Viewer -> GPIO -> GPIOF) it was not updating the content. All the other registers associated with the PortF are getting updated. I am using Keil 4.74 and TM4C123GH6PM microcontroller.