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FreeRTOS for Medical product on cypress psoc 5lp

Posted by itsvinu on November 24, 2016

Hi , We want to use freeRTOS on a medical product ( microcontroller PSOC 5LP ) . Our device is Class C , So we want to validate all tools used in the development , that will include FreeRTOS also . For the same purpose , Is there a unit test framework for freertos? if its there how can we access it ? And if not is there any way to validate FreeRTOS ? We tried to use SafeRTOS , but port on PSoC 5LP was not available .

FreeRTOS for Medical product on cypress psoc 5lp

Posted by rtel on November 24, 2016

Most FreeRTOS testing is done using dynamic system testing using files such as the following https://sourceforge.net/p/freertos/code/HEAD/tree/trunk/FreeRTOS/Demo/Common/Minimal/StaticAllocation.c, and using Visual Studio's cover coverage analysis tools to ensure we obtain the desired coverage. We aim to achieve complete branch coverage, not just statement coverage, which is why you will see the mtCOVERAGETESTMARKER() macro inserted as follows:

if( [codition] ) { [perform action] } else { mtCOVERAGETESTMARKER(); }

Adding mtCOVERAGETESTMARKER() allows us to ensure we have tests for when [condition] evaluates to both true and false. Normally mtCOVERAGETESTMARKER() is #defined to nothing, so it does not generate any code. When we are testing we define mtCOVERAGETESTMARKER() to a nop so the testing tools tell us if the line has been executed or not.

Although many people use FreeRTOS in medical applications, our tests are somewhat informal, so I assume they have their own tests or use a similar technique to ourselves.

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