04 04-EmbeddedSoftwareArchitectures

  mbedded Software Architecture

Real Time Embedded Systems, GWU, Spring 2006

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CSCI-190 CSCI-190 & & CSCI CSCI 297 297 Real Real Time Time Embedded Embedded Systems Systems

Embedded Embedded Software Architectures ss Software Architecture Architectures Architecture

 

©© 2005-2010 2005-2010 Dan Dan Eisenreich Eisenreich www.atomicrhubarb.com www.atomicrhubarb.com

Real Time Embedded Systems, GWU, Spring 2006

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Survey Of mbedded Software Architectures

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Round Robin

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State Machine

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Round Robin with Interrupts

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Just interrupts

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Function Queue Scheduling Real-Time Operating System

Real Time Embedded Systems, GWU, Spring 2006

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Round Robin ●

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Round Robin / Control Loop Everything is a function call from the main loop main { ...   while(1) {   check_buttons(); scan_display();   read_tempsensor();   operate_motor();   } }

Real Time Embedded Systems, GWU, Spring 2006

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Round Robin ●

Low priority tasks need to be slowed down while(1) {               }

... if (display_skips