The questions raised btapp, It is a library that uses traditional Bluetooth, Traditional Bluetooth libraries are also supported BLE the. Use the test as follows:
1. operational SDK is V1. 0. 4 edition--wm_sdk_w800_20211203. rar.
2. in SDK Bluetooth library:
a. in lib The directory needs to be libbtcontroller_br_edr. a and libbthost_br_edr. a instead libbtcontroller. a (Replace

Drop the old library)  and libbthost. a

b. toolsw800. config Block this line CONFIG_W800_USE_NIMBLE---#CONFIG_W800_USE_NIMBLE=y
c. ldw800gcc_csky. ld Connect file to enlarge code area---LENGTH = 0x120000 instead 0x140000
d. includewm_config. h Configuration using tradition BT Library simultaneous support BLE:

#define TLS_CONFIG_BR_EDR    CFG_ON
#define TLS_CONFIG_BLE      CFG_ON

e. demowm_demo. h the DEMO_CONSOLE Macro open DEMO_ON, bluetooth DEMO unpack DEMO_BT The macro

#define DEMO_CONSOLE                DEMO_ON
#define DEMO_BT                      (DEMO_ON && DEMO_CONSOLE) 

f. After modifying the above places, Precompile library---make lib, again make.

Code modification refer to screenshot:

3. Burn test after generating firmware log As follows:
a. After reset, Test broadcast using serial console instructions: Execute the two commands in the screenshot---Post-success phone nrf connectAPP The device can be searched

b. After reset, Test using serial console instructions SERVER equipment: Execute the two commands in the screenshot---Post-success phone APP connect SERVER equipment, Send communication data.