fixes #36: add API for clearScanResponse()

public/BLEDevice.h

@@ -147,6 +147,9 @@ class BLEDevice
     /**
      * Reset any advertising payload prepared from prior calls to
      * accumulateAdvertisingPayload().
+     *
+     * Note: This should be followed by a call to setAdvertisingPayload() or
+     * startAdvertising() before the update takes effect.
      */
     void        clearAdvertisingPayload(void);
 
@@ -207,6 +210,15 @@ class BLEDevice
      */
     ble_error_t accumulateScanResponse(GapAdvertisingData::DataType type, const uint8_t *data, uint8_t len);
 
+    /**
+     * Reset any scan response prepared from prior calls to
+     * accumulateScanResponse().
+     *
+     * Note: This should be followed by a call to setAdvertisingPayload() or
+     * startAdvertising() before the update takes effect.
+     */
+    void        clearScanResponse(void);
+
     /**
      * Start advertising (GAP Discoverable, Connectable modes, Broadcast
      * Procedure).
@@ -570,6 +582,13 @@ BLEDevice::accumulateScanResponse(GapAdvertisingData::DataType type, const uint8
     return scanResponse.addData(type, data, len);
 }
 
+inline void
+BLEDevice::clearScanResponse(void)
+{
+    needToSetAdvPayload = true;
+    scanResponse.clear();
+}
+
 inline ble_error_t
 BLEDevice::setAdvertisingPayload(void) {
     needToSetAdvPayload = false;