https://devzone.nordicsemi.com/f/nordic-q-a/90243/can-central-and-peripherals-receive-and-send-dataHello everyone, I am working with the SDK v17.1.0 with the DK nRF52832 with the examples of ble_app_uart and ble_app_uart_c. I managed to implement a multilink communication of BLE over UART with two peripherals and a central. What I have nowen-USTelligent Community 13Thu, 21 Jul 2022 08:46:59 GMThttps://devzone.nordicsemi.com/thread/378018?ContentTypeID=1Thu, 21 Jul 2022 08:46:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9811ad28-90dc-4060-8b6d-4c63209078c3Zara Wu <p>Hello,&nbsp;</p> <p></p> <p>When the&nbsp;Central sends, use sd_ble_gattc_write(uint16_t conn_handle, ble_gattc_write_params_t const *p_write_params), and obtain the conn_handle of different Peripherals when connecting, which is used to distinguish different <span>Peripherals</span> devices and the characteristic value parameters of the <span>Peripherals</span>.</p> <p>To get the <span>Peripherals</span> notification data, you can get it in BLE_GATTC_EVT_HVX in ble_evt_handler().</p> <p>If you want to use the official demo, can refer to \examples\ble_central\ble_app_uart_c</p> <p></p> <p>Hope it helps.</p> <p>Thanks and best regards</p> <p>Zara Wu (RF-star technology)</p><div style="clear:both;"></div>