v1.0.0 for RP2040W with CYW43439 WiFi

### Initial Releases v1.0.0

1. Initial coding to support **RASPBERRY_PI_PICO_W with CYW43439 WiFi**, using [**arduino-pico core v2.4.0+**](https://github.com/earlephilhower/arduino-pico)

examples/AsyncUDPClient/AsyncUDPClient.ino

@@ -0,0 +1,119 @@
+/****************************************************************************************************************************
+  AsyncUDPClient.ino
+  
+  For RP2040W with CYW43439 WiFi
+     
+  AsyncUDP_RP2040W is a library for the RP2040W with CYW43439 WiFi
+  
+  Based on and modified from ESPAsyncUDP (https://github.com/me-no-dev/ESPAsyncUDP)
+  Built by Khoi Hoang https://github.com/khoih-prog/AsyncUDP_RP2040W
+ *****************************************************************************************************************************/
+
+#if !( defined(ARDUINO_RASPBERRY_PI_PICO_W) )
+  #error For RASPBERRY_PI_PICO_W only
+#endif
+
+#include <WiFi.h>
+
+// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
+#include <AsyncUDP_RP2040W.h>         // https://github.com/khoih-prog/AsyncUDP_RP2040W
+
+char ssid[] = "your_ssid";        // your network SSID (name)
+char pass[] = "12345678";         // your network password (use for WPA, or use as key for WEP), length must be 8+
+
+AsyncUDP udp;
+
+int status = WL_IDLE_STATUS;
+
+void printWifiStatus()
+{
+  // print the SSID of the network you're attached to:
+  Serial.print("SSID: ");
+  Serial.println(WiFi.SSID());
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("Local IP Address: ");
+  Serial.println(ip);
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial && millis() < 5000);
+
+  Serial.print("\nStart AsyncUDPClient on "); Serial.println(BOARD_NAME);
+  Serial.println(ASYNC_UDP_RP2040W_VERSION);
+
+  ///////////////////////////////////
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE)
+  {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  Serial.print(F("Connecting to SSID: "));
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+
+  delay(1000);
+
+  // attempt to connect to WiFi network
+  while ( status != WL_CONNECTED)
+  {
+    delay(500);
+
+    // Connect to WPA/WPA2 network
+    status = WiFi.status();
+  }
+
+  printWifiStatus();
+
+  ///////////////////////////////////
+
+  if (udp.connect(IPAddress(192, 168, 1, 100), 1234)) 
+  {
+    Serial.println("UDP connected");
+
+    udp.onPacket([](AsyncUDPPacket packet) 
+    {
+      Serial.print("UDP Packet Type: ");
+      Serial.print(packet.isBroadcast() ? "Broadcast" : packet.isMulticast() ? "Multicast" : "Unicast");
+      Serial.print(", From: ");
+      Serial.print(packet.remoteIP());
+      Serial.print(":");
+      Serial.print(packet.remotePort());
+      Serial.print(", To: ");
+      Serial.print(packet.localIP());
+      Serial.print(":");
+      Serial.print(packet.localPort());
+      Serial.print(", Length: ");
+      Serial.print(packet.length());
+      Serial.print(", Data: ");
+      Serial.write(packet.data(), packet.length());
+      Serial.println();
+      //reply to the client
+      packet.printf("Got %u bytes of data", packet.length());
+    });
+
+    //Send unicast
+    udp.print("Hello Server!");
+  }
+}
+
+void loop()
+{
+  delay(1000);
+  //Send broadcast on port 1234
+  udp.broadcastTo("Anyone here?", 1234);
+}

examples/AsyncUDPMulticastServer/AsyncUDPMulticastServer.ino

@@ -0,0 +1,130 @@
+/****************************************************************************************************************************
+  AsyncUDPMulticastServer.ino
+
+  AsyncUDP_RP2040W is a library for the RP2040W with CYW43439 WiFi
+  
+  Based on and modified from ESPAsyncUDP (https://github.com/me-no-dev/ESPAsyncUDP)
+  Built by Khoi Hoang https://github.com/khoih-prog/AsyncUDP_RP2040W
+ *****************************************************************************************************************************/
+
+#if !( defined(ARDUINO_RASPBERRY_PI_PICO_W) )
+  #error For RASPBERRY_PI_PICO_W only
+#endif
+
+#include <WiFi.h>
+
+// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
+#include <AsyncUDP_RP2040W.h>         // https://github.com/khoih-prog/AsyncUDP_RP2040W
+
+char ssid[] = "your_ssid";            // your network SSID (name)
+char pass[] = "12345678";             // your network password (use for WPA, or use as key for WEP), length must be 8+
+
+AsyncUDP udp;
+
+int status = WL_IDLE_STATUS;
+
+#define BUF_SZ      32
+
+char buf[BUF_SZ];
+
+void parsePacket(AsyncUDPPacket packet)
+{
+  Serial.print("UDP Packet Type: ");
+  Serial.print(packet.isBroadcast() ? "Broadcast" : packet.isMulticast() ? "Multicast" : "Unicast");
+  Serial.print(", From: ");
+  Serial.print(packet.remoteIP());
+  Serial.print(":");
+  Serial.print(packet.remotePort());
+  Serial.print(", To: ");
+  Serial.print(packet.localIP());
+  Serial.print(":");
+  Serial.print(packet.localPort());
+  Serial.print(", Length: ");
+  Serial.print(packet.length());
+  Serial.print(", Data: ");
+  Serial.write(packet.data(), packet.length());
+  Serial.println();
+
+  snprintf(buf, sizeof(buf) -1, "Got %u bytes of data", packet.length());
+  //reply to the client
+  // size_t write(const uint8_t *data, size_t len);
+  packet.write((uint8_t*) buf, strlen(buf));
+}
+
+void printWifiStatus()
+{
+  // print the SSID of the network you're attached to:
+  Serial.print("SSID: ");
+  Serial.println(WiFi.SSID());
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("Local IP Address: ");
+  Serial.println(ip);
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial && millis() < 5000);
+
+  Serial.print("\nStart AsyncUDPMulticastServer on "); Serial.println(BOARD_NAME);
+  Serial.println(ASYNC_UDP_RP2040W_VERSION);
+
+  ///////////////////////////////////
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE)
+  {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  Serial.print(F("Connecting to SSID: "));
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+
+  delay(1000);
+
+  // attempt to connect to WiFi network
+  while ( status != WL_CONNECTED)
+  {
+    delay(500);
+
+    // Connect to WPA/WPA2 network
+    status = WiFi.status();
+  }
+
+  printWifiStatus();
+
+  ///////////////////////////////////
+
+  if (udp.listenMulticast(IPAddress(239, 1, 2, 3), 1234))
+  {
+    Serial.print("UDP Listening on IP: ");
+    Serial.println(WiFi.localIP());
+
+    udp.onPacket([](AsyncUDPPacket packet)
+    {
+      parsePacket(packet);
+    });
+
+    //Send multicast
+    udp.print("Hello!");
+  }
+}
+
+void loop()
+{
+  delay(1000);
+  //Send multicast
+  udp.print("Anyone here?");
+}

examples/AsyncUDPServer/AsyncUDPServer.ino

@@ -0,0 +1,122 @@
+/****************************************************************************************************************************
+  Async_UdpServer.ino
+
+  AsyncUDP_RP2040W is a library for the RP2040W with CYW43439 WiFi
+  
+  Based on and modified from ESPAsyncUDP (https://github.com/me-no-dev/ESPAsyncUDP)
+  Built by Khoi Hoang https://github.com/khoih-prog/AsyncUDP_RP2040W
+ *****************************************************************************************************************************/
+
+#if !( defined(ARDUINO_RASPBERRY_PI_PICO_W) )
+  #error For RASPBERRY_PI_PICO_W only
+#endif
+
+#include <WiFi.h>
+
+// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
+#include <AsyncUDP_RP2040W.h>         // https://github.com/khoih-prog/AsyncUDP_RP2040W
+
+char ssid[] = "your_ssid";        // your network SSID (name)
+char pass[] = "12345678";         // your network password (use for WPA, or use as key for WEP), length must be 8+
+
+AsyncUDP udp;
+
+int status = WL_IDLE_STATUS;
+
+#define BUF_SZ      32
+
+char buf[BUF_SZ];
+
+void printWifiStatus()
+{
+  // print the SSID of the network you're attached to:
+  Serial.print("SSID: ");
+  Serial.println(WiFi.SSID());
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("Local IP Address: ");
+  Serial.println(ip);
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial && millis() < 5000);
+
+  Serial.print("\nStart Async_UdpServer on "); Serial.println(BOARD_NAME);
+  Serial.println(ASYNC_UDP_RP2040W_VERSION);
+
+  ///////////////////////////////////
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE)
+  {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  Serial.print(F("Connecting to SSID: "));
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+
+  delay(1000);
+
+  // attempt to connect to WiFi network
+  while ( status != WL_CONNECTED)
+  {
+    delay(500);
+
+    // Connect to WPA/WPA2 network
+    status = WiFi.status();
+  }
+
+  printWifiStatus();
+
+  ///////////////////////////////////
+
+  if (udp.listen(1234)) 
+  {
+    Serial.print("UDP Listening on IP: ");
+    Serial.println(WiFi.localIP());
+
+    udp.onPacket([](AsyncUDPPacket packet) 
+    {
+      Serial.print("UDP Packet Type: ");
+      Serial.print(packet.isBroadcast() ? "Broadcast" : packet.isMulticast() ? "Multicast" : "Unicast");
+      Serial.print(", From: ");
+      Serial.print(packet.remoteIP());
+      Serial.print(":");
+      Serial.print(packet.remotePort());
+      Serial.print(", To: ");
+      Serial.print(packet.localIP());
+      Serial.print(":");
+      Serial.print(packet.localPort());
+      Serial.print(", Length: ");
+      Serial.print(packet.length());
+      Serial.print(", Data: ");
+      Serial.write(packet.data(), packet.length());
+      Serial.println();
+
+      snprintf(buf, sizeof(buf) -1, "Got %u bytes of data", packet.length());
+      //reply to the client
+      // size_t write(const uint8_t *data, size_t len);
+      packet.write((uint8_t*) buf, strlen(buf));
+    });
+  }
+}
+
+void loop()
+{
+  delay(1000);
+  //Send broadcast
+  udp.broadcast("Anyone here?");
+}