How can I increase the BLE send rate and the memory size of the protocol stack

[jiefeng_wang]

Need to send data at high sampling rate in real time, how to configure the maximum transfer rate and large protocol stack memory to support high-speed transmission。And how to calculate the current Bluetooth transfer rate

The connection interval has been configured to 7.5ms, and a single packet can transmit up to 245 bytes from HCI

BLE_CMD_MAX_PARAM_LEN = 255

typedef __PACKED_STRUCT

{

  uint16_t Conn_Handle_To_Notify;

  uint16_t Service_Handle;

  uint16_t Char_Handle;

  uint8_t Update_Type;

  uint16_t Char_Length;

  uint16_t Value_Offset;

  uint8_t Value_Length;

  uint8_t Value[BLE_CMD_MAX_PARAM_LEN - 12];

} aci_gatt_update_char_value_ext_cp0;

 

[STTwo-32]

Hello @jiefeng_wang 

To achieve a maximize throughput, I suggest you take a look at this application: https://github.com/stm32-hotspot/STM32WB-BLE-Basic-DataThroughput-Server. This app will help you to understand how to make it work on the best data throughput.

Best Regards.

STTwo-32