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Using MPU feature of Cortex M3 with FreeRTOS

Posted by owaisfazal on October 7, 2013

Hello, I have just started working with FreeRTOS using Arduino DUE as a testing platform. I have read about the MPU feature and how it can be used to protect memory regions. However, it is a bit unclear as to what has to be defined in the normal FreeRTOS source files to use the MPU feature. Secondly, I have read through several posts that FreeRTOS only supports MPU for M3 architecture, can it also be used for M4 as well? Regards.


Using MPU feature of Cortex M3 with FreeRTOS

Posted by richardbarry on October 7, 2013

If your M4 has no FPU, or if it has an FPU but the FPU is never enabled or used, then you can use the same code.

The MPU port is separate to the non-MPU port though.

The non MPU port layer is in FreeRTOSSourceportableGCCARMCM3 The MPU port layer is in FreeRTOSSourceportableGCCARMCM3_MPU

Regards.


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