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** signals IAPP the buffer is ready
* IAPP runs the inference to spot the pronounced word.
The firmware running in D2 is implemented as a [https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcuxpresso-software-development-kit-sdk:MCUXpresso-SDK FreeRTOS] application. The use of a real-time operating system, combined with the intrinsic characteristics of the Cortex M7 in terms of [https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/beginner-guide-on-interrupt-latency-and-interrupt-latency-of-the-arm-cortex-m-processors interrupt latency], make this core extremely suitable for tight real-time constrained applications. Nevertheless, nothing prevents to choose a bare metal coding style instead.
== Additional notes regarding the inference application ==
