here are two different types of processor commonly used in embedded systems: application processors and microprocessors.
The different between these is that application processors have a memory management unit. An MMU virtualizes and ‘looks after’ memory for you. As the memory is virtual, an MMU is able to prevent memory fragmentation and the subsequent slowing down of the system by mapping data across to other parts of the same program after memory has been freed.
Another advantage of an MMU is memory protection, which manages the memory access rights of programs, and helps with debugging.
Where do Linux and FreeRTOS come in? Embedded Linux requires an MMU to run, whereas FreeRTOS does not. Having the MMU decreases development effort and improves system support, however increases the memory footprint of the application.
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FreeRTOS vs Linux for Embedded Systems - ByteSnapry on functioning. FreeRTOS uses a pure priority scheduling system and therefore within the limitations of the hardware, should be able perform as either a hard or soft RTOS. Memory Management T<span>here are two different types of processor commonly used in embedded systems: application processors and microprocessors. The different between these is that application processors have a memory management unit. An MMU virtualizes and ‘looks after’ memory for you. As the memory is virtual, an MMU is able to prevent memory fragmentation and the subsequent slowing down of the system by mapping data across to other parts of the same program after memory has been freed. Another advantage of an MMU is memory protection, which manages the memory access rights of programs, and helps with debugging. Where do Linux and FreeRTOS come in? Embedded Linux requires an MMU to run, whereas FreeRTOS does not. Having the MMU decreases development effort and improves system support, however increases the memory footprint of the application. Memory The key advantage currently of FreeRTOS is that it is lightweight. All the code is in one application layer and therefore less flash and RAM is required for a smooth experience. Summary
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