Add clearData method to NimBLEAdvertisementData.

Author: h2zero

CHANGELOG.md

@@ -18,6 +18,7 @@ All notable changes to this project will be documented in this file.
  - `NimBLEAdvertising::setManufacturerData` new overload method that accepts a vector of `uint8_t`.
  - `NimBLEAdvertisementData::setManufacturerData` new overload method that accepts a vector of `uint8_t`.
  - `NimBLEAdvertisedDevice` new method: `getPayloadByType`, to get data from generic data types advertised.
+ - `NimBLEAdvertisementData::clearData` clears the data for updating/reuse.
 
 ### Changed
  - `NimBLEAdvertisedDevice::getManufacturerData`, now takes an index value parameter to use when there is more than 1 instance of manufacturer data.

src/NimBLEAdvertising.cpp

@@ -1067,4 +1067,12 @@ std::string NimBLEAdvertisementData::getPayload() {
     return m_payload;
 } // getPayload
 
+
+/**
+ * @brief Clear the advertisement data for reuse.
+ */
+void NimBLEAdvertisementData::clearData() {
+    m_payload.clear();
+}
+
 #endif /* CONFIG_BT_ENABLED && CONFIG_BT_NIMBLE_ROLE_BROADCASTER  && !CONFIG_BT_NIMBLE_EXT_ADV */

src/NimBLEAdvertising.h

@@ -72,6 +72,7 @@ class NimBLEAdvertisementData {
     void addTxPower();
     void setPreferredParams(uint16_t min, uint16_t max);
     std::string getPayload();               // Retrieve the current advert payload.
+    void clearData();                       // Clear the advertisement data.
 
 private:
     friend class NimBLEAdvertising;