simbit18 opened a new pull request, #17566:
URL: https://github.com/apache/nuttx/pull/17566
## Summary
- Add initial support for Waveshare ESP32-C3-Zero.
## Impact
Impact on user: This PR adds the Waveshare ESP32-C3-Zero board.
Impact on build: NO
Impact on hardware: NO
Impact on documentation: NO
Impact on security: NO
Impact on compatibility: NO
## Testing
```
nsh> uname -a
NuttX 3.6.1 4fd3434b4f-dirty Dec 18 2025 16:20:57 risc-v esp32-c3-zero
nsh> help
help usage: help [-v] [<cmd>]
. cp expr mkdir rm uname
[ cmp false mkrd rmdir umount
? dirname fdinfo mount set unset
alias df free mv sleep uptime
unalias dmesg help pidof source usleep
basename echo hexdump printf test watch
break env kill ps time xd
cat exec pkill pwd true wait
cd exit ls reboot truncate
Builtin Apps:
dd ostest sensortest spi nsh
i2c dumpstack sh getprime bmp280
nsh>
```
ostest
```
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 5526c 5526c
ordblks 7 6
mxordblk 4c438 4c438
uordblks 4e44 4e44
fordblks 50428 50428
user_main: vfork() test
vfork_test: Child 73 ran successfully
Final memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena 5526c 5526c
ordblks 1 5
mxordblk 50da0 4c438
uordblks 44cc 6564
fordblks 50da0 4ed08
user_main: Exiting
ostest_main: Exiting with status 0
nsh>
```
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