With respect to TM4C123 ARM Cortex M4 Processor
1) How many machine cycles are required to process first line of ISR after an interrupt occurs? What are the other benefits of NVIC to process interrupt more efficiently?
2) How to access only bit 1, 2, and 3 information from PORTF into variable unsigned int x?
3) What are the operating/working modes of ARM Cortex M4 processor? Which one is higher privileged mode?