Mutex - Revision history

Heth at 11:22, 24 March 2012

2012-03-24T11:22:17Z

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2012-03-24T08:20:42Z

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‎Example

Heth: Created page with "A Mutex ('''Mut'''ual '''Ex'''clusion) is a method used to gain exclusive rights to use a shared resource in programming. Often used when designing software in [[embedded system]..."

2012-03-24T07:05:02Z

Created page with "A Mutex ('''Mut'''ual '''Ex'''clusion) is a method used to gain exclusive rights to use a shared resource in programming. Often used when designing software in [[embedded system]..."

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A Mutex ('''Mut'''ual '''Ex'''clusion) is a method used to gain exclusive rights to use a shared resource in programming. Often used when designing software in [[embedded system]]s using [[interrupt]]s and/or [[RTOS]].

=Example=
In a [[interrupt]] driven embedded system there are two devices connected to a [[CAN bus]]. Two independent software routines communicate independent of each other with Device A and Device B through a shared [[CAN bus]]. See drawing below.
{|
|-
|[[Image:Mutex1.png|450px|left|thumb|Two software routines fighting for exclusive access to the shared CAN bus]]
|-
|}

<references/>
[[Category:Embedded]][[Category:ARM]]

← Older revision		Revision as of 11:22, 24 March 2012
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	A Mutex ('''Mut'''ual '''Ex'''clusion) is a method used to gain exclusive rights to use a shared resource in programming. Often used when designing software in [[embedded system]]s using [[interrupt]]s and/or [[RTOS]].		A Mutex ('''Mut'''ual '''Ex'''clusion) is a method used to gain exclusive rights to use a shared resource in programming. Often used when designing software in [[embedded system]]s using [[interrupt]]s and/or [[RTOS]].

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 ==ARM Thumb==
-LDREX and STREX<ref name=M3177>The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8)</ref>
+LDREX and STREX<ref name=M3177>The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8)</ref><ref name=THUMB>[http://infocenter.arm.com/help/topic/com.arm.doc.dui0489c/DUI0489C_arm_assembler_reference.pdf ARM Assembler reference] section 3.3.13 page 3.39</ref>
 =References=
 <references/>
 [[Category:Embedded]][[Category:ARM]]

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 |}
 ==ARM Thumb==
-LDREX and STREX<ref name=M3177>The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8</ref>
+LDREX and STREX<ref name=M3177>The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8)</ref>
 =References=
 <references/>
 [[Category:Embedded]][[Category:ARM]]

@@ Line 10: / Line 10: @@
 ==ARM Thumb==
 LDREX and STREX<ref name=M3177>The definitive guide to the CORTEX-M3, Second edition - section 10.6 page 177 (ISBN978-1-85617-963-8</ref>
 <references/>
 [[Category:Embedded]][[Category:ARM]]