Difference between revisions of "Example timer"

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(Using timer)
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{{todo|SEOKWREV (01.02.14-12:45->JG+);(01.02.14-14:25->MD+);(01.02.14-15:40->MG+);(04.07.14-10:15->BS+);(04.10.14-11:35->BS+)|Jgreene|project=oe 4,oe 5,jg,md,SEOKWREV,bs}}
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{{#seo:
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|title=Example timer
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|titlemode=append
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|keywords=Example timer,Timer C,Software Timer
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|description=This is a guide to the <code>timer</code> C example project included in the EMAC OE SDK.
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This is a guide to the <code>timer</code> C example project included in the EMAC OE SDK.
 
This is a guide to the <code>timer</code> C example project included in the EMAC OE SDK.
  
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== Opening, Building and Uploading the Project Files ==
 
== Opening, Building and Uploading the Project Files ==
  
<big>1. Open the C/C++ editing perspective.</big>
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For information on opening the project from within Eclipse, please see [[Importing the EMAC OE SDK Projects with Eclipse]]. Then, follow [[Using the EMAC OE SDK Projects with Eclipse]] for information on how to build, upload and execute the example.
 
 
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<big>2. Open the project files.</big>
 
 
 
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<big>3. Build the project.</big>
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Alternatively, the <code>Makefile</code> can be used with the <code>make</code> command from the commandline to build and upload the example.  For information on this method, please see [[Using EMAC OE SDK Example Projects]].
  
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====EMAC SDK 5.X====
  
<big>4. Upload the executables to the target system.</big>
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For information on opening the project from within QtCreator, please see [[Getting_Started_With_Qt_Creator#Adding_Source_Files | QtCreator: Adding Source Files]]. Then, follow [[Getting Started With Qt Creator]] for information on how to build, upload and execute the example.
  
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Alternatively, the <code>CMakefile.txt</code> can be used with the <code>cmake</code> command from the commandline to build and upload the example.  For information on this method, please see [[Getting_Started_with_the_EMAC_OE_SDK#Target_Machine_Compiling | Getting Started with the EMAC OE SDK]].
  
 
==Usage and Behavior==
 
==Usage and Behavior==
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Starting timer at 1 HZ
 
Starting timer at 1 HZ
 
delay : 1002  ms  
 
delay : 1002  ms  
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delay : 1000  ms
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delay : 1000  ms
 
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</syntaxhighlight>
 
</syntaxhighlight>
  
Specifying 1 as our tick freqency, the timer cycles at a sedate 1000 ms (1 s) until we manually stop it with a CTRL-C.
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Specifying 1 as our tick freqency, the timer cycles at a sedate 1000 ms (1 s) until we hit CTRL-C.
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==Summary==
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The <code>timer</code> C example project demonstrates how to use the software timer.

Latest revision as of 10:24, 25 September 2020

TODO: {{#todo:SEOKWREV (01.02.14-12:45->JG+);(01.02.14-14:25->MD+);(01.02.14-15:40->MG+);(04.07.14-10:15->BS+);(04.10.14-11:35->BS+)|Jgreene|oe 4,oe 5,jg,md,SEOKWREV,bs}}

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

For information on opening the project from within Eclipse, please see Importing the EMAC OE SDK Projects with Eclipse. Then, follow Using the EMAC OE SDK Projects with Eclipse for information on how to build, upload and execute the example.

Alternatively, the Makefile can be used with the make command from the commandline to build and upload the example. For information on this method, please see Using EMAC OE SDK Example Projects.

EMAC SDK 5.X

For information on opening the project from within QtCreator, please see QtCreator: Adding Source Files. Then, follow Getting Started With Qt Creator for information on how to build, upload and execute the example.

Alternatively, the CMakefile.txt can be used with the cmake command from the commandline to build and upload the example. For information on this method, please see Getting Started with the EMAC OE SDK.

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.