Hardware Reference
In-Depth Information
•
Make subroutine calls
•
Perform terminal I/O by calling
D-Bug12 library functions
•
Configure an I/O pin for input or for
output
•
Use HCS12 I/O ports to interface
with simple I/O devices such as
LEDs, seven-segment displays, and
DIP switches
•
Use an HCS12 I/O pin to generate
waveforms and make sounds
•
Write subroutines to create time
delays that are a multiple of certain
base values
After completing this chapter, you should
be able to
•
Explain the reason why the subroutine
is useful
•
Explain the issues involved in a sub-
routine call
•
Write subroutines to perform arith-
metic and string processing operations
•
Access parameters stored in the stack
and manipulate stack data structure
•
Perform binary-to-ASCII string and
ASCII string-to-binary conversion
•
Write subroutines to perform certain
functions
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