53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
#include "WiFi.h"
|
|
#include "AsyncUDP.h"
|
|
|
|
const char * ssid = "***********";
|
|
const char * password = "***********";
|
|
|
|
AsyncUDP udp;
|
|
|
|
void setup()
|
|
{
|
|
Serial.begin(115200);
|
|
WiFi.mode(WIFI_STA);
|
|
WiFi.begin(ssid, password);
|
|
if (WiFi.waitForConnectResult() != WL_CONNECTED) {
|
|
Serial.println("WiFi Failed");
|
|
while(1) {
|
|
delay(1000);
|
|
}
|
|
}
|
|
if(udp.listenMulticast(IPAddress(239,1,2,3), 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();
|
|
//reply to the client
|
|
packet.printf("Got %u bytes of data", packet.length());
|
|
});
|
|
//Send multicast
|
|
udp.print("Hello!");
|
|
}
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
delay(1000);
|
|
//Send multicast
|
|
udp.print("Anyone here?");
|
|
}
|