1. 用例：esp-idf\examples\bluetooth\esp_ble_mesh\ble_mesh_node\onoff_server
2. 选项：
idf.py menuconfig 选择nimble
(Top) → Component config → Bluetooth → Bluetooth Host
( ) Bluedroid - Dual-mode
(X) NimBLE - BLE only ( ) Controller Only
3. 问题：为什么烧录后nRF MESH的APP扫描不到设备？