ESP-IDF BT-SPP-ACCEPTOR demo
======================
Demo of SPP acceptor role
This is the demo for user to use ESP_APIs to create a SPP acceptor.
Options choose step:
1. make menuconfig.
2. enter menuconfig "Component config", choose "Bluetooth"
3. enter menu Bluetooth, choose "Classic Bluetooth" and "SPP Profile"
4. choose your options.
Then set SPP_SHOW_MODE as SPP_SHOW_DATA or SPP_SHOW_SPEED in code(should be same with bt_spp_initator).
After the program started, bt_spp_initator will connect it and send data.