This restores the entrypoint switch from commit
7cc6707a76 ("boards/esp32s3-xiao: switch
defconfigs to nxinit entrypoint"), reverted in 76b90e02cbe4967193
b620abcb1efb9f6b3f8f5b after a real-hardware regression report on
Seeed XIAO ESP32-S3 (board hangs, no USB console), and fixes the
actual root cause this time instead of just reverting it.
Root cause: the shared boards/xtensa/esp32s3 init.rc starts the
interactive console as a plain "sh", which, unlike nsh_main's
nsh_consolemain(), never registers/connects the CDC-ACM gadget this
board uses as its console (CONFIG_CDCACM_CONSOLE=y, no
CONFIG_DEV_CONSOLE). Restoring the previous commit's entrypoint switch
on its own is therefore not sufficient - it would just reintroduce the
same regression, so that commit is folded into this one rather than
kept as a separate, individually broken step.
Fix, using the "console" service option added to nxinit by a companion
apps change:
- init.rc: bring up the console gadget once, unconditionally, before
any service starts, via "exec -- sercon" (apps/system/cdcacm already
implements exactly this and depends on neither nxinit nor nsh); flag
the "console" service with the new "console" option so its stdio is
connected to the (now registered) gadget device.
- esp32s3-xiao's usbnsh/combo defconfigs: add CONFIG_SYSTEM_CDCACM=y so
sercon is actually built in. Verified with "make savedefconfig"
against both defconfigs (byte-identical, no manual edits beyond the
generated diff).
Verified end to end on real Seeed XIAO ESP32-S3 Sense hardware
(usbnsh): after this change the board enumerates its NuttX CDC-ACM
gadget on a normal reset and boots to an interactive nsh session
spawned by nxinit ("ps" shows init_main as PID 2, parent of "sh").
Assisted-by: Kiro:claude-sonnet-5
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
8bd50d2797