Example timer

TODO: {{#todo:Final Draft(01.02.14-12:45->JG+);(01.02.14-14:25->MD+);(01.02.14-15:40->MG+)|Jgreene|oe 4,oe 5,jg,md,FinalDraft}}

This is a guide to the timer C example project included in the EMAC OE SDK.

This project demonstrates how to use the software timer.

The timer project builds one executable: timer.

Opening, Building and Uploading the Project Files

1. Import the example projects into Eclipse if not already done.

2. Build and Upload the timer demo.

Usage and Behavior

Hardware Requirements

The timer C example project will run just fine on any system for which it can be compiled.

Using timer

The timer program is executed from the console. It takes a single parameter.

./timer frequency

Where frequency specifies the frequency of the timer's tick cycle.
It reports the delay between ticks, running until it is manually halted with a CTRL-C.

Usage Example

root@som9g20:/tmp# ./timer 1     
Starting timer at 1 HZ
delay : 1002  ms 
delay : 1000  ms 
delay : 1000  ms 
.
.
.
delay : 1000  ms 
delay : 1000  ms 
^C

Specifying 1 as our tick freqency, the timer cycles at a sedate 1000 ms (1 s) until we hit CTRL-C.

Summary

The timer C example project demonstrates how to use the software timer.