Sending data at a high rate over a Bluetooth serial port causes the Bluetooth connection to be disconnected

[yuxu]

Hi,everyone on the community

When using the BLE_APP_UART example, the serial port sends a packet of data to the mobile phone every 10ms, resulting in the device disconnecting from the Bluetooth connection。

I believe that the serial port interrupt interferes with the packet transmission during the connection cycle.

How can I avoid this while ensuring high data rates?

[Hung Bui]

Hi Yuxu, 

Please check if there is any assertion on the ble_app_uart application. I suspect that the UART library was overflow. Do you use HWFC ? 

Please also capture a sniffer trace so we would know what exactly happened in the BLE connection.