Hi @Sherry Wu Greetings! Welcome to Microsoft Q&A forum. Thank you for posting this question here.
Azure RTOS FileX and GUIX are intergrated with Azure RTOS ThreadX. The devices supported on ThreadX should also be compatible to work with ThreadX and GUIX. The documentation on ThreadX states that ThreadX services are supported by ARMv8-M architecture, including the Cortex-M23, Cortex-M33, Cortex-M35P, and Cortex-M55. Please refer to the documentation here - Overview of Azure RTOS ThreadX for more details.
Hope this answers your question. Please let us know if you have any specific questions with embedding FileX or GUIX on Cortex-M33 in the comments below. We would be glad to assist you further.
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