leocafonso opened a new pull request, #20370:
URL: https://github.com/apache/nuttx/pull/20370
## Summary
Add initial support for the Renesas RA8M1 MCU family (Arm Cortex-M85,
Armv8.1-M, up to 480 MHz) and the Renesas EK-RA8M1 evaluation kit.
## Impact
*Update this section, where applicable, on how change affects users,
build process, hardware, documentation, security, compatibility, etc.*
- New feature: adds a new architecture (`ra8m1`) and a new board
(`ek-ra8m1`).
- Build: `arch/arm/Kconfig`, `boards/Kconfig`,
- Hardware: only the EK-RA8M1 has been tested.
- Documentation: adds `Documentation/platforms/arm/ra8m1/` with the
platform page and the EK-RA8M1 board page.
## Testing
Host: <OS / version, toolchain (e.g. arm-none-eabi-gcc x.y)>
Board: Renesas EK-RA8M1 (R7FA8M1AHECBD), console on SCI9 (via the on-board
debug USB)
Build and flash:
```
cmake -B build -DBOARD_CONFIG=ek-ra8m1:nsh -GNinja
cmake --build build
rfp-cli -device ra --tool jlink -if swd -p ./build/nuttx.hex
```
Run `ostest` from NSH on the `nsh` configuration:
```
nsh> ostest
```
Result
[ek-ra8m1_ostest_log.txt](https://github.com/user-attachments/files/32666433/ek-ra8m1_ostest_log.txt)
The `nsh-leds` configuration test:
Build and flash:
```
cmake -B build -DBOARD_CONFIG=ek-ra8m1:nsh-leds -GNinja
cmake --build build
rfp-cli -device ra --tool jlink -if swd -p ./build/nuttx.hex
```
Run `printf` from NSH on the `nsh-leds` configuration:
```
printf '\x00000007' > /dev/userleds
```
Result:
The three leds on the board lights up
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