how to use volatile ,and why to use volatile ,and where we shoud use volatile !

thank you ! my friends!
how to use volatile ,and why to use volatile ,and where we shoud use volatile !

thank you ! my friends!
volatile ?

What is the use of declaring a variable volatile... what it means if it is specified volatile?
volatile ?

What is the use of declaring a variable volatile... what it means if it is specified volatile?
volatile keyword

The application note suggests to wrap a timer tick variable in a function which disables all interrupts, reads and copies the variable into a temp, re-enables interrupts, then returns the temp. Can...