BLE: Handle NULL parameters in Gap::connect.

Author: pan-

features/FEATURE_BLE/source/generic/GenericGap.cpp

@@ -44,7 +44,6 @@ static const uint16_t advertising_interval_max = 0x4000;
 static const uint16_t supervision_timeout_min = 0x000A;
 static const uint16_t supervision_timeout_max = 0x0C80;
 
-
 /*
  * Return true if value is included in the range [lower_bound : higher_bound]
  */
@@ -491,6 +490,22 @@ ble_error_t GenericGap::connect(
     const ConnectionParams_t* connectionParams,
     const GapScanningParams* scanParams
 ) {
+    ConnectionParams_t default_connection_params = {
+        /* min conn interval */ 50,
+        /* max  conn interval */ 100,
+        /* slave latency */ 0,
+        /* supervision timeout */ 600
+    };
+    GapScanningParams default_scan_params;
+
+    if (connectionParams == NULL) {
+        connectionParams = &default_connection_params;
+    }
+
+    if (scanParams == NULL) {
+        scanParams = &default_scan_params;
+    }
+
     if (is_scan_params_valid(scanParams) == false) {
         return BLE_ERROR_PARAM_OUT_OF_RANGE;
     }