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Allow sim HCI socket users to select the host-side HCI target at runtime
with --bt-dev. Passing --bt-dev=hciN overrides CONFIG_SIM_HCISOCKET_DEVID
for the BlueZ HCI user channel, while omitting the option keeps the existing
configured default behavior.
Also allow --bt-dev=/path/to/socket to connect to an H:4 stream exposed
through a Unix-domain socket. This lets sim applications use a controller
provided by another host process or by a UART-to-Unix-socket bridge without
requiring BlueZ raw HCI privileges for the NuttX process.
Use host-side output for early --bt-dev parse errors, since NuttX stdio is
not initialized before nx_start().
Document the BlueZ and Unix socket modes, including the capability
requirements for BlueZ and the socat bridge example for Unix socket mode.
Testing:
Host: Ubuntu 22.04 x86_64
Board/config: sim:bthcisock
Style checks:
git diff --check HEAD~2..HEAD
PATH=/home/mi/bsim-auto-test/.venv/bin:$PATH \
./tools/checkpatch.sh -c -u -m -g HEAD~2..HEAD
Clean build:
make distclean
./tools/configure.sh -l -a ../../nuttx-apps sim:bthcisock
kconfig-tweak --file .config --set-val STACK_USAGE_WARNING 0
make olddefconfig
make -j16
Invalid runtime argument smoke test:
./nuttx --bt-dev=invalid
Verified the command exits with status 1 and reports the invalid target
without crashing before nx_start().
Unix socket HCI smoke test:
socat -d -d UNIX-LISTEN:/tmp/hci.sock,fork,reuseaddr \
/dev/ttyACM2,b1000000,raw,echo=0,crtscts=1
printf 'ifconfig\nbt bnep0 info\npoweroff\n' | \
timeout 20s ./nuttx --bt-dev=/tmp/hci.sock
Verified the sim registers the Bluetooth network device as bnep0 and
bt bnep0 info reads the controller state through the Unix-socket HCI
path, including BDAddr aa:bb:cc:dd:ee:ff from the attached controller.
Assisted-by: OpenAI Codex
Signed-off-by: Lingao Meng <menglingao@xiaomi.com>
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| arm | ||
| arm64 | ||
| avr | ||
| ceva | ||
| hc | ||
| mips | ||
| misco | ||
| or1k | ||
| renesas | ||
| risc-v | ||
| sim | ||
| sparc | ||
| tricore | ||
| x86 | ||
| x86_64 | ||
| xtensa | ||
| z16 | ||
| z80 | ||
| index.rst | ||