Introduction
The creation of accurate delays are key requirements in many embedded applications.
In this chapter we will consider two different techniques that may be used to pro- vide such facilities:
● HARDW ARE DELA Y [page 194] which is capable of producing precise delays through the use of one of the on-chip timers. Particularly suitable for generating delays of around 0.1 ms or more.
● SOFTW ARE DELA Y [page 206] which is a simple technique that requires no hardware resources. The most flexible form of delay mechanism that is particularly suitable for generating short delays (measured in microseconds) or where timer resources are not available.