Chapter 6. Instruction Usage Examples
Overview
In the previous chapter we looked at the instruction set of the Cortex-M0 processor. In this chapter we will see how these instructions are used to carry out various operations. The examples in this chapter are useful for understanding the instruction set. Because most embedded programmers write their program in C, there is no need for most application to write code in assembly, as illustrated in these examples.
The following examples are written based on ARM assembly syntax. For the GNU assembler, the syntax is different in a number of ways, as highlighted in the previous chapter.
Program Control
If-Then-Else
One the most important functions of the instruction set is to handle conditional branches. For ...
Get The Definitive Guide to the ARM Cortex-M0 now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
