Hi Mr. Binh Nguyen, That is a great news and thank you for planing that.
Please don't use the FSP/HAL, it is better to do the native port. Renesas previously contributed the RA4 port ( https://github.com/apache/nuttx/pull/15892), where they implemented a proper native port. Suggestion: you can use the CMSIS SVD converter that they used: https://github.com/robertlipe/svdtoheaders It simplifies the most time-consuming part of the NuttX port: creating the header files. BR, Alan
