Merge pull request #6 from paul-szczepanek-arm/feature-support

support for controller features

Author: paul-szczepanek-arm

features/FEATURE_BLE/ble/pal/PalGap.h

@@ -32,6 +32,33 @@ namespace pal {
  * by that layer.
  */
 struct Gap {
+    /** @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 6, Part B - 4.6 */
+    struct ControllerSupportedFeatures_t : SafeEnum<ControllerSupportedFeatures_t, uint8_t> {
+        enum type {
+            LE_ENCRYPTION = 0,
+            CONNECTION_PARAMETERS_REQUEST_PROCEDURE,
+            EXTENDED_REJECT_INDICATION,
+            SLAVE_INITIATED_FEATURES_EXCHANGE,
+            LE_PING,
+            LE_DATA_PACKET_LENGTH_EXTENSION,
+            LL_PRIVACY,
+            EXTENDED_SCANNER_FILTER_POLICIES,
+            LE_2M_PHY,
+            STABLE_MODULATION_INDEX_TRANSMITTER,
+            STABLE_MODULATION_INDEX_RECEIVER,
+            LE_CODED_PHY,
+            LE_EXTENDED_ADVERTISING,
+            LE_PERIODIC_ADVERTISING,
+            CHANNEL_SELECTION_ALGORITHM_2,
+            LE_POWER_CLASS
+        };
+
+        /**
+         * Construct a new instance of ControllerSupportedFeatures_t.
+         */
+        ControllerSupportedFeatures_t(type value) : SafeEnum<ControllerSupportedFeatures_t, uint8_t>(value) { }
+    };
+
     /**
      * Initialisation of the instance. An implementation can use this function
      * to initialise the subsystems needed to realize the operations of this
@@ -670,6 +697,16 @@ struct Gap {
         bool enable
     ) = 0;
 
+    /**
+     * Checked support for a feature in the link controller.
+     *
+     * @param feature feature to be checked.
+     * @return TRUE if feature is supported.
+     */
+    virtual bool is_feature_supported(
+        ControllerSupportedFeatures_t feature
+    ) = 0;
+
     /**
      * Register a callback which will handle Gap events.
      *

features/FEATURE_BLE/source/generic/GenericGap.cpp

@@ -417,6 +417,8 @@ GenericGap::GenericGap(
     _scan_timeout(),
     _connection_event_handler(NULL)
 {
+    _pal_gap.initialize();
+
     _pal_gap.when_gap_event_received(
         mbed::callback(this, &GenericGap::on_gap_event_received)
     );

features/FEATURE_BLE/targets/TARGET_CORDIO/CordioPalGap.h

@@ -13,8 +13,13 @@ namespace cordio {
  * Implementation of ble::pal::Gap for the Cordio stack.
  */
 class Gap : public ::ble::pal::Gap {
-
 public:
+    virtual bool is_feature_supported(
+        Gap::ControllerSupportedFeatures_t feature
+    ) {
+        return (HciGetLeSupFeat() & (1 << feature.value()));
+    }
+
     virtual ble_error_t initialize() {
         return BLE_ERROR_NONE;
     }