53 lines
1.6 KiB
Arduino
53 lines
1.6 KiB
Arduino
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#include <NativeEthernet.h>
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#include <NativeEthernetUdp.h>
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byte mac[] = { 0x04, 0xE9, 0xE5, 0x10, 0x00, 0x02 }; // Unique MAC address for receiver
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IPAddress ip(192, 168, 1, 101); // Receiver IP address
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unsigned int localPort = 8888; // Port number to listen on
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EthernetUDP Udp;
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byte packetBuffer[256]; // Buffer to hold received data
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void setup() {
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Serial.begin(115200);
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//while (!Serial); // Wait for Serial Monitor
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Serial.println("Initializing Ethernet...");
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Ethernet.begin(mac, ip);
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if (Ethernet.hardwareStatus() == EthernetNoHardware) {
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Serial.println("Ethernet hardware not found!");
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while (true); // Halt execution
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}
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if (Ethernet.linkStatus() == LinkOFF) {
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Serial.println("Ethernet cable not connected!");
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}
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Udp.begin(localPort); // Start listening on the specified port
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Serial.println("UDP Receiver Ready");
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}
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void loop() {
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int packetSize = Udp.parsePacket();
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if (packetSize) {
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Serial.print("Received packet of size: ");
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Serial.println(packetSize);
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// Read the 256 bytes into packetBuffer
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int len = Udp.read(packetBuffer, sizeof(packetBuffer));
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if (len > 0) {
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packetBuffer[len] = 0; // Null-terminate buffer for string output (optional)
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Serial.print("Message: ");
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for (int i = 0; i < len; i++) {
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// Print the received data (in decimal for example)
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Serial.print(packetBuffer[i], DEC);
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Serial.print(" ");
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}
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Serial.println();
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}
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}
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}
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