https://devzone.nordicsemi.com/f/nordic-q-a/20856/how-can-i-get-write-eventHi. I&#39;m using nRF52832, SDK13, S132v4.0.2. I&#39;m making peripheral device using nRF52832. And I can see it gets BLE_GATTS_EVT_WRITE event as below when central sends WRITE event. static void on_ble_evt(ble_evt_t * p_ble_evt) { ...... switch (p_ble_evten-USTelligent Community 13Wed, 29 Mar 2017 00:59:22 GMThttps://devzone.nordicsemi.com/thread/81445?ContentTypeID=1Wed, 29 Mar 2017 00:59:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1fb25071-b4cd-4b2b-9749-6a1b9c75c762roger.k<p>Thanks a lot. After I added code as below, it works well. char_md.char_props.write_wo_resp= 1;</p> <p>Thanks again.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/81444?ContentTypeID=1Tue, 28 Mar 2017 12:55:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f9935df5-c312-4671-b89d-7b77dd7b8f53Hung Bui<p>Hi Roger,</p> <p>You should have BLE_GATTS_EVT_WRITE when the central do a write command (write without response). As you can find in the paremeter for the event inside ble_gatts_evt_write_t we have an .op , meaning the type of operation. And in BLE_GATTS_OPS list you can find write request and write command there.</p> <p>We need to look at how you define your characteristic, if you allow write command or not ? When you do write command do you see the actual value was updated ?</p><div style="clear:both;"></div>