How do you do
Using E: \ Nordic \ nRF5_SDK_12 2.0 \ examples \ ble_peripheral \ ble_app_uart ble_app_uart routines, join in routine PWM program, cell phone bluetooth connection module, sending data to initialize the PWM program, mobile phone software disconnected, will prompt "GATT CONN TIMEOUT"
Please help a look at this question a lot of days, thanks