Added sendCommandWithCode method

* Added sendCommandWithCode to enable use of custom rollingCode storage

README.md

@@ -46,6 +46,9 @@ Currently, there are two implementations of the storage available:
 
 Most [examples](examples/) use the EEPROM implementation. See the [ESP32-NVS](examples/ESP32-NVS/ESP32-NVS.ino) example for NVS.
 
+Eventually you can pass NULL into the constructor of the SomfyRemote class in place of *rollingCodeStorage* and use external rolling code keeping logic. 
+If you are not using any storage, then you have to use `sendCommandWithCode` method instead of `sendCommand`.
+
 #### Available commands
 
 | Name    | Description                                     | HEX code |

src/SomfyRemote.cpp

@@ -12,6 +12,10 @@ void SomfyRemote::setup() {
 
 void SomfyRemote::sendCommand(Command command, int repeat) {
 	const uint16_t rollingCode = rollingCodeStorage->nextCode();
+	sendCommandWithCode(command, repeat, rollingCode);
+}
+
+void SomfyRemote::sendCommandWithCode(Command command, uint16_t rollingCode, int repeat) {
 	byte frame[7];
 	buildFrame(frame, command, rollingCode);
 	sendFrame(frame, 2);

src/SomfyRemote.h

@@ -40,6 +40,15 @@ class SomfyRemote {
 	 * 				 only be used when simulating holding a button.
 	 */
 	void sendCommand(Command command, int repeat = 4);
+	/**
+	 * Send a command with this SomfyRemote.
+	 *
+	 * @param command the command to send
+	 * @param rollingCode the rolling code to use. Should only be used with external storage.
+	 * @param repeat the number how often the command should be repeated, default 4. Should
+	 * 				 only be used when simulating holding a button.
+	 */
+	void sendCommandWithCode(Command command, uint16_t rollingCode, int repeat = 4);
 };
 
 Command getSomfyCommand(const String &string);