53 lines
1.5 KiB
Arduino
53 lines
1.5 KiB
Arduino
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#include "WiFi.h"
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#include "AsyncUDP.h"
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const char * ssid = "***********";
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const char * password = "***********";
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AsyncUDP udp;
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void setup()
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{
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Serial.begin(115200);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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if (WiFi.waitForConnectResult() != WL_CONNECTED) {
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Serial.println("WiFi Failed");
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while(1) {
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delay(1000);
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}
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}
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if(udp.listenMulticast(IPAddress(239,1,2,3), 1234)) {
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Serial.print("UDP Listening on IP: ");
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Serial.println(WiFi.localIP());
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udp.onPacket([](AsyncUDPPacket packet) {
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Serial.print("UDP Packet Type: ");
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Serial.print(packet.isBroadcast()?"Broadcast":packet.isMulticast()?"Multicast":"Unicast");
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Serial.print(", From: ");
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Serial.print(packet.remoteIP());
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Serial.print(":");
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Serial.print(packet.remotePort());
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Serial.print(", To: ");
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Serial.print(packet.localIP());
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Serial.print(":");
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Serial.print(packet.localPort());
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Serial.print(", Length: ");
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Serial.print(packet.length());
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Serial.print(", Data: ");
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Serial.write(packet.data(), packet.length());
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Serial.println();
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//reply to the client
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packet.printf("Got %u bytes of data", packet.length());
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});
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//Send multicast
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udp.print("Hello!");
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}
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}
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void loop()
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{
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delay(1000);
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//Send multicast
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udp.print("Anyone here?");
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}
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