in \connect SDK\v1.5.0\nrf\samples\bluetooth\peripheral_uart,data number is limited 20 bytes, more than 20bytes BLE will part data in two or more packs to send or receive

[zhouhaifang]

in \connect SDK\v1.5.0\nrf\samples\bluetooth\peripheral_uart,data number is limited 20 bytes, more than 20bytes BLE will part data in two or more packs to send or receive .how can i chang to data number to more bytes. for example , i want to send 200 bytes through COM  in one time and BLE receive 200bytes i one time , relatively HOW to send 200bytes data in one time  through BLE ,not separate 200bytes data in many pack to send

[zhouhaifang]

Einar Thorsrud:

thank you very much!!!

today i delete code below:

 struct bt_conn_le_data_len_param data_len_param;
data_len_param.tx_max_len = 80; // byte
 data_len_param.tx_max_time = 3750; // us
err = bt_conn_le_data_len_update(current_conn, &data_len_param);

also can increase ble send data number .maybe only change two or one prj.conf , using  app that connected with nrf5340dk through ble .in app there is a configuration of MTU on menu or dialoge

[Einar Thorsrud]

Hi,

Good to hear it works. yes, the code you deleted is only needed to initiate the data length (DLE) update procedure from the nRF. As long as you have done the correct adjustments in prj.conf files it will be supported by the BLE stack, so the peer can initiate DLE.