https://devzone.nordicsemi.com/f/nordic-q-a/96696/how-to-set-data-to-characteristic-with-read-propertyHi. I am testing the NRF5340 DK using NCS 2.2.0. DK operates as a peripheral device, and the controller tries to use the smartphone App. I created a custom service and created a custom characteristic for BLE RX and TX tests. The custom characteristicen-USTelligent Community 13Sun, 26 Feb 2023 04:42:03 GMThttps://devzone.nordicsemi.com/thread/412096?ContentTypeID=1Sun, 26 Feb 2023 04:42:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:068becde-9772-4cc7-b616-689b2fbac357John Lee<p>My device is a peripheral,<br />I was able to solve it by using bt_gatt_attr_read() in the read callback.<br />thank you</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/410166?ContentTypeID=1Wed, 15 Feb 2023 17:32:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:44848e0e-e9c0-4940-a1e5-ed47862bfe5eAmanda Hsieh<p>Hi,&nbsp;</p> <p><span>You should be able to use&nbsp;</span><a href="http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/connectivity/bluetooth/api/gatt.html#c.bt_gatt_read">bt_gatt_read()</a><span>, see&nbsp;</span><a href="http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/connectivity/bluetooth/api/gatt.html#c.bt_gatt_read_params">bt_gatt_read_params</a>&nbsp;and<span>&nbsp;<a href="https://github.com/nrfconnect/sdk-nrf/blob/f18f6929e239f01125d349dc8543c940b45b2001/subsys/bluetooth/services/throughput.c#L169">this example</a>.&nbsp;</span></p> <p><span>Regards,<br />Amanda H.</span></p><div style="clear:both;"></div>