Referring a Variable

Watch function

By registering a variable to the watch window, it is possible to display the value of that variable. In this section, you register a global variable called "count2" to the watch window and confirm that the value of the variable is incremented using a break point. The "count2" that is incremented every 500 milliseconds by using timer function is defined as a global variable.

Since the interrupt process functions peculiar to the embedded systems cannot have arguments, this variable is defined as a global variable so that other functions can share its value.