https://devzone.nordicsemi.com/f/nordic-q-a/22044/usage-of-s132-v4-0-x-ble-featuresHello, I just went through the release-notes of the S132 and found a passage that the s132_nrf52_4.0.0-1.alpha introduced some new ble-features like f.ex. the role-configuration for up to 20 links individually. It also states that the hvn-queueen-USTelligent Community 13Mon, 15 May 2017 11:34:29 GMThttps://devzone.nordicsemi.com/thread/86514?ContentTypeID=1Mon, 15 May 2017 11:34:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5d1a8990-2d96-435d-b7d9-33fc1b8bd95aRay Breslin<p>Thank you very much for the fast response! Ill make sure to check it out :)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86513?ContentTypeID=1Mon, 15 May 2017 09:31:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:60ed7c0e-0da9-4bde-be61-51965e80aa03Sigurd<p>Hi,</p> <blockquote> <p>I just went through the release-notes of the S132 and found a passage that the s132_nrf52_4.0.0-1.alpha introduced some new ble-features like f.ex. the role-configuration for up to 20 links individually.</p> </blockquote> <p>That is correct, SoftDevice S132 v4.0.X added support for 20 connections, where you can freely configure each link in any combination between Peripheral and Central.</p> <hr /> <p><strong>Q1</strong>: It also states that the hvn-queue-size could be configured - does that mean that while having a tx-packet-count of 7 for each connection, I am able to still queue more then 7 notifications before I receive a BLE_ERROR_NO_TX_BUFFERS-error?</p> <p><strong>A1</strong>: The application packet concept has been replaced with a dedicated transmission queue for Handle Value Notifications. The number of Handle Value Notifications that can be queued is configured by <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v5.0.0/structble__gatts__conn__cfg__t.html?cp=2_3_1_0_0_2_4_4_0">ble_gatts_conn_cfg_t::hvn_tx_queue_size</a>. When the queue is full, the <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v4.0.2/group___b_l_e___g_a_t_t_s___f_u_n_c_t_i_o_n_s.html?cp=2_3_0_1_1_2_4_2_4#ga313fe43c2e93267da668572e885945db">function</a> call will now return <code>NRF_ERROR_RESOURCES</code>. <code>BLE_ERROR_NO_TX_PACKETS</code> / <code>BLE_ERROR_NO_TX_BUFFERS</code> is no longer used. A <code>BLE_GATTS_EVT_HVN_TX_COMPLETE</code> event will be issued as soon as the transmission of the notification is complete.</p> <hr /> <p><strong>Q2</strong>: So far I couldnt find some description on how to make use of all those new softdevice-feature - do I need a new SDK (currently v12.2.0) for it?</p> <p><strong>A2</strong>: Yes, you need to upgrade to SDK 13, as shown in the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/compatibility_matrix/ic_rev_sdk_sd_comp_matrix.html?cp=2_0_1_2">compatibility matrix</a>. There are also new examples that shows you how to use the new functionality, such as the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v13.0.0/ble_sdk_app_multiperipheral.html?cp=4_0_0_4_1_2_19">BLE Multiperipheral Application</a></p><div style="clear:both;"></div>