Add RP2040 (Pi Pico W) support

Author: tfry-git

EmbAJAX.h

@@ -699,8 +699,15 @@ template<size_t NUM> class EmbAJAXPage : public EmbAJAXContainer<NUM>, public Em
 #include <EmbAJAXOutputDriverESP8266.h>
 #elif defined (ESP32)
 #include <EmbAJAXOutputDriverESP32.h>
+#elif defined (ARDUINO_ARCH_RP2040)
+#include <EmbAJAXOutputDriverRP2040.h>
 #else
-#error No output driver available for this hardware (yet). Please implement your own (it is easy!) and submit a patch.
+#include <WebServer.h>
+#define EmbAJAXOutputDriverWebServerClass WebServer
+#include <WiFi.h>
+#include <EmbAJAXOutputDriverGeneric.h>
+#warning No output driver available for this hardware (yet). We try using the generic driver, but success is not guaranteed.
+#warning In most cases, implementing a driver is as easy as picking the correct header file to include. Please consider submitting a patch.
 #endif
 #endif
 

EmbAJAXOutputDriverRP2040.h

@@ -0,0 +1,32 @@
+/**
+ * 
+ * EmbAJAX - Simplistic framework for creating and handling displays and controls on a WebPage served by an Arduino (or other small device).
+ * 
+ * Copyright (C) 2018-2019 Thomas Friedrichsmeier
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+**/
+
+#ifndef EMBAJAXOUTPUTDRIVERRP2040_H
+#define EMBAJAXOUTPUTDRIVERRP2040_H
+
+#include <WebServer.h>
+#define EmbAJAXOutputDriverWebServerClass WebServer
+#include <WiFi.h>  // Makes the examples work cross-platform; not strictly needed
+
+// the actual implementation
+#include "EmbAJAXOutputDriverGeneric.h"
+
+#endif