Add methods to set/get connection PHY's.

* Added `NimBLEDevice::setDefaultPhy` which will set the default preferred PHY for all connections.
* Added `NimBLEClient::updatePhy` to request a PHY change with a peer.
* Added `NimBLEClient::getPhy` to read the current connection PHY setting.
* Added `NimBLEServer::updatePhy` to request a PHY change with a peer.
* Added `NimBLEServer::getPhy` to read the PHY of a peer connection.
* Added callbacks:
* - `NimBLEClientCallbacks::onPhyUpdate`
* - `NimBLEServerCallbacks::onPhyUpdate`
 Which are called when the PHY update is complete.

src/NimBLEClient.cpp

@@ -388,7 +388,49 @@ void NimBLEClient::setConfig(NimBLEClient::Config config) {
  */
 void NimBLEClient::setConnectPhy(uint8_t mask) {
     m_phyMask = mask;
+} // setConnectPhy
+
+/**
+ * @brief Request a change to the PHY used for this peer connection.
+ * @param [in] txPhyMask TX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @param [in] rxPhyMask RX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @param phyOptions Additional PHY options. Valid values are:
+ * - BLE_GAP_LE_PHY_CODED_ANY (default)
+ * - BLE_GAP_LE_PHY_CODED_S2
+ * - BLE_GAP_LE_PHY_CODED_S8
+ * @return True if successful.
+ */
+bool NimBLEClient::updatePhy(uint8_t txPhyMask, uint8_t rxPhyMask, uint16_t phyOptions) {
+    int rc = ble_gap_set_prefered_le_phy(m_connHandle, txPhyMask, rxPhyMask, phyOptions);
+    if (rc != 0) {
+        NIMBLE_LOGE(LOG_TAG, "Failed to update phy; rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
     }
+
+    return rc == 0;
+} // updatePhy
+
+/**
+ * @brief Get the PHY used for this peer connection.
+ * @param [out] txPhy The TX PHY.
+ * @param [out] rxPhy The RX PHY.
+ * @return True if successful.
+ */
+bool NimBLEClient::getPhy(uint8_t* txPhy, uint8_t* rxPhy) {
+    int rc = ble_gap_read_le_phy(m_connHandle, txPhy, rxPhy);
+    if (rc != 0) {
+        NIMBLE_LOGE(LOG_TAG, "Failed to read phy; rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
+    }
+
+    return rc == 0;
+} // getPhy
 # endif
 
 /**
@@ -1129,6 +1171,19 @@ int NimBLEClient::handleGapEvent(struct ble_gap_event* event, void* arg) {
             break;
         } // BLE_GAP_EVENT_IDENTITY_RESOLVED
 
+# if CONFIG_BT_NIMBLE_EXT_ADV
+        case BLE_GAP_EVENT_PHY_UPDATE_COMPLETE: {
+            NimBLEConnInfo peerInfo;
+            rc = ble_gap_conn_find(event->phy_updated.conn_handle, &peerInfo.m_desc);
+            if (rc != 0) {
+                return BLE_ATT_ERR_INVALID_HANDLE;
+            }
+
+            pClient->m_pClientCallbacks->onPhyUpdate(pClient, event->phy_updated.tx_phy, event->phy_updated.rx_phy);
+            return 0;
+        } // BLE_GAP_EVENT_PHY_UPDATE_COMPLETE
+# endif
+
         case BLE_GAP_EVENT_MTU: {
             if (pClient->m_connHandle != event->mtu.conn_handle) {
                 return 0;
@@ -1224,6 +1279,7 @@ std::string NimBLEClient::toString() const {
 } // toString
 
 static const char* CB_TAG = "NimBLEClientCallbacks";
+
 /**
  * @brief Get the last error code reported by the NimBLE host
  * @return int, the NimBLE error code.
@@ -1234,20 +1290,20 @@ int                NimBLEClient::getLastError() const {
 
 void NimBLEClientCallbacks::onConnect(NimBLEClient* pClient) {
     NIMBLE_LOGD(CB_TAG, "onConnect: default");
-}
+} // onConnect
 
 void NimBLEClientCallbacks::onConnectFail(NimBLEClient* pClient, int reason) {
     NIMBLE_LOGD(CB_TAG, "onConnectFail: default, reason: %d", reason);
-}
+} // onConnectFail
 
 void NimBLEClientCallbacks::onDisconnect(NimBLEClient* pClient, int reason) {
     NIMBLE_LOGD(CB_TAG, "onDisconnect: default, reason: %d", reason);
-}
+} // onDisconnect
 
 bool NimBLEClientCallbacks::onConnParamsUpdateRequest(NimBLEClient* pClient, const ble_gap_upd_params* params) {
     NIMBLE_LOGD(CB_TAG, "onConnParamsUpdateRequest: default");
     return true;
-}
+} // onConnParamsUpdateRequest
 
 void NimBLEClientCallbacks::onPassKeyEntry(NimBLEConnInfo& connInfo) {
     NIMBLE_LOGD(CB_TAG, "onPassKeyEntry: default: 123456");
@@ -1256,7 +1312,7 @@ void NimBLEClientCallbacks::onPassKeyEntry(NimBLEConnInfo& connInfo) {
 
 void NimBLEClientCallbacks::onAuthenticationComplete(NimBLEConnInfo& connInfo) {
     NIMBLE_LOGD(CB_TAG, "onAuthenticationComplete: default");
-}
+} // onAuthenticationComplete
 
 void NimBLEClientCallbacks::onIdentity(NimBLEConnInfo& connInfo) {
     NIMBLE_LOGD(CB_TAG, "onIdentity: default");
@@ -1265,10 +1321,16 @@ void NimBLEClientCallbacks::onIdentity(NimBLEConnInfo& connInfo) {
 void NimBLEClientCallbacks::onConfirmPasskey(NimBLEConnInfo& connInfo, uint32_t pin) {
     NIMBLE_LOGD(CB_TAG, "onConfirmPasskey: default: true");
     NimBLEDevice::injectConfirmPasskey(connInfo, true);
-}
+} // onConfirmPasskey
 
 void NimBLEClientCallbacks::onMTUChange(NimBLEClient* pClient, uint16_t mtu) {
     NIMBLE_LOGD(CB_TAG, "onMTUChange: default");
-}
+} // onMTUChange
+
+# if CONFIG_BT_NIMBLE_EXT_ADV
+void NimBLEClientCallbacks::onPhyUpdate(NimBLEClient* pClient, uint8_t txPhy, uint8_t rxPhy) {
+    NIMBLE_LOGD(CB_TAG, "onPhyUpdate: default, txPhy: %d, rxPhy: %d", txPhy, rxPhy);
+} // onPhyUpdate
+# endif
 
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_CENTRAL */

src/NimBLEClient.h

@@ -93,7 +93,9 @@ class NimBLEClient {
                             bool                  response = false);
 
 # if CONFIG_BT_NIMBLE_EXT_ADV
-    void setConnectPhy(uint8_t mask);
+    void setConnectPhy(uint8_t phyMask);
+    bool updatePhy(uint8_t txPhysMask, uint8_t rxPhysMask, uint16_t phyOptions = 0);
+    bool getPhy(uint8_t* txPhy, uint8_t* rxPhy);
 # endif
 
     struct Config {
@@ -207,6 +209,21 @@ class NimBLEClientCallbacks {
      * about the peer connection parameters.
      */
     virtual void onMTUChange(NimBLEClient* pClient, uint16_t MTU);
+
+# if CONFIG_BT_NIMBLE_EXT_ADV
+    /**
+     * @brief Called when the PHY update procedure is complete.
+     * @param [in] pClient A pointer to the client whose PHY was updated.
+     * about the peer connection parameters.
+     * @param [in] txPhy The transmit PHY.
+     * @param [in] rxPhy The receive PHY.
+     * Possible values:
+     * * BLE_GAP_LE_PHY_1M
+     * * BLE_GAP_LE_PHY_2M
+     * * BLE_GAP_LE_PHY_CODED
+     */
+    virtual void onPhyUpdate(NimBLEClient* pClient, uint8_t txPhy, uint8_t rxPhy);
+# endif
 };
 
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_CENTRAL */

src/NimBLEDevice.cpp

@@ -711,6 +711,31 @@ NimBLEAddress NimBLEDevice::getWhiteListAddress(size_t index) {
 /*                               STACK FUNCTIONS                              */
 /* -------------------------------------------------------------------------- */
 
+# if CONFIG_BT_NIMBLE_EXT_ADV || defined(_DOXYGEN_)
+/**
+ * @brief Set the preferred default phy to use for connections.
+ * @param [in] txPhyMask TX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @param [in] rxPhyMask RX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @return True if successful.
+ */
+bool NimBLEDevice::setDefaultPhy(uint8_t txPhyMask, uint8_t rxPhyMask) {
+    int rc = ble_gap_set_prefered_default_le_phy(txPhyMask, rxPhyMask);
+    if (rc != 0) {
+        NIMBLE_LOGE(LOG_TAG, "Failed to set default phy; rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
+    }
+
+    return rc == 0;
+}
+# endif
+
 /**
  * @brief Host reset, we pass the message so we don't make calls until re-synced.
  * @param [in] reason The reason code for the reset.

src/NimBLEDevice.h

@@ -136,6 +136,10 @@ class NimBLEDevice {
     static void          onSync(void);
     static void          host_task(void* param);
 
+# if CONFIG_BT_NIMBLE_EXT_ADV
+    static bool setDefaultPhy(uint8_t txPhyMask, uint8_t rxPhyMask);
+# endif
+
 # if defined(CONFIG_BT_NIMBLE_ROLE_OBSERVER)
     static NimBLEScan* getScan();
 # endif

src/NimBLEServer.cpp

@@ -671,6 +671,20 @@ int NimBLEServer::handleGapEvent(struct ble_gap_event *event, void *arg) {
             return 0;
         } // BLE_GAP_EVENT_IDENTITY_RESOLVED
 
+# if CONFIG_BT_NIMBLE_EXT_ADV
+        case BLE_GAP_EVENT_PHY_UPDATE_COMPLETE: {
+            rc = ble_gap_conn_find(event->phy_updated.conn_handle, &peerInfo.m_desc);
+            if(rc != 0) {
+                return BLE_ATT_ERR_INVALID_HANDLE;
+            }
+
+            pServer->m_pServerCallbacks->onPhyUpdate(peerInfo,
+                                                     event->phy_updated.tx_phy,
+                                                     event->phy_updated.rx_phy);
+            return 0;
+        } //BLE_GAP_EVENT_PHY_UPDATE_COMPLETE
+#endif
+
         case BLE_GAP_EVENT_PASSKEY_ACTION: {
             struct ble_sm_io pkey = {0,0};
 
@@ -937,6 +951,50 @@ bool NimBLEServer::startAdvertising(uint8_t inst_id,
 bool NimBLEServer::stopAdvertising(uint8_t inst_id) {
     return getAdvertising()->stop(inst_id);
 } // stopAdvertising
+
+/**
+ * @brief Request an update to the PHY used for a peer connection.
+ * @param [in] connHandle the connection handle to the update the PHY for.
+ * @param [in] txPhyMask TX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @param [in] rxPhyMask RX PHY. Can be mask of following:
+ * - BLE_GAP_LE_PHY_1M_MASK
+ * - BLE_GAP_LE_PHY_2M_MASK
+ * - BLE_GAP_LE_PHY_CODED_MASK
+ * - BLE_GAP_LE_PHY_ANY_MASK
+ * @param phyOptions Additional PHY options. Valid values are:
+ * - BLE_GAP_LE_PHY_CODED_ANY (default)
+ * - BLE_GAP_LE_PHY_CODED_S2
+ * - BLE_GAP_LE_PHY_CODED_S8
+ * @return True if successful.
+ */
+bool NimBLEServer::updatePhy(uint16_t connHandle, uint8_t txPhyMask, uint8_t rxPhyMask, uint16_t phyOptions) {
+    int rc = ble_gap_set_prefered_le_phy(connHandle, txPhyMask, rxPhyMask, phyOptions);
+    if (rc != 0) {
+        NIMBLE_LOGE(LOG_TAG, "Failed to update phy; rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
+    }
+
+    return rc == 0;
+} // updatePhy
+
+/**
+ * @brief Get the PHY used for a peer connection.
+ * @param [in] connHandle the connection handle to the get the PHY for.
+ * @param [out] txPhy The TX PHY.
+ * @param [out] rxPhy The RX PHY.
+ * @return True if successful.
+ */
+bool NimBLEServer::getPhy(uint16_t connHandle, uint8_t* txPhy, uint8_t* rxPhy) {
+    int rc = ble_gap_read_le_phy(connHandle, txPhy, rxPhy);
+    if (rc != 0) {
+        NIMBLE_LOGE(LOG_TAG, "Failed to read phy; rc=%d %s", rc, NimBLEUtils::returnCodeToString(rc));
+    }
+
+    return rc == 0;
+} // getPhy
 #endif
 
 #if !CONFIG_BT_NIMBLE_EXT_ADV || defined(_DOXYGEN_)
@@ -1089,4 +1147,10 @@ void NimBLEServerCallbacks::onConnParamsUpdate(NimBLEConnInfo& connInfo){
     NIMBLE_LOGD("NimBLEServerCallbacks", "onConnParamsUpdate: default");
 } // onConnParamsUpdate
 
+# if CONFIG_BT_NIMBLE_EXT_ADV
+void NimBLEServerCallbacks::onPhyUpdate(NimBLEConnInfo& connInfo, uint8_t txPhy, uint8_t rxPhy) {
+    NIMBLE_LOGD("NimBLEServerCallbacks", "onPhyUpdate: default, txPhy: %d, rxPhy: %d", txPhy, rxPhy);
+} // onPhyUpdate
+# endif
+
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_PERIPHERAL */

src/NimBLEServer.h

@@ -55,6 +55,8 @@ public:
                                             int duration = 0,
                                             int max_events = 0);
     bool                   stopAdvertising(uint8_t inst_id);
+    bool                   updatePhy(uint16_t connHandle, uint8_t txPhysMask, uint8_t rxPhysMask, uint16_t phyOptions);
+    bool                   getPhy(uint16_t connHandle, uint8_t* txPhy, uint8_t* rxPhy);
 #endif
 #  if !CONFIG_BT_NIMBLE_EXT_ADV || defined(_DOXYGEN_)
     NimBLEAdvertising*     getAdvertising();
@@ -213,6 +215,21 @@ public:
      * updated connection parameters.
      */
     virtual void onConnParamsUpdate(NimBLEConnInfo& connInfo);
+
+# if CONFIG_BT_NIMBLE_EXT_ADV
+    /**
+     * @brief Called when the PHY update procedure is complete.
+     * @param [in] connInfo A reference to a NimBLEConnInfo instance with information
+     * about the peer connection parameters.
+     * @param [in] txPhy The transmit PHY.
+     * @param [in] rxPhy The receive PHY.
+     * Possible values:
+     * * BLE_GAP_LE_PHY_1M
+     * * BLE_GAP_LE_PHY_2M
+     * * BLE_GAP_LE_PHY_CODED
+     */
+    virtual void onPhyUpdate(NimBLEConnInfo& connInfo, uint8_t txPhy, uint8_t rxPhy);
+# endif
 }; // NimBLEServerCallbacks
 
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_PERIPHERAL */