commit 2df4f3167555808b281b0d1a0a40701528cc4921
Author: Adema <h.adema@rug.nl>
Date:   Wed Mar 12 10:00:29 2025 +0100

    Upload files to "eth_tcp_sender"

diff --git a/eth_tcp_sender/eth_tcp_sender.ino b/eth_tcp_sender/eth_tcp_sender.ino
new file mode 100644
index 0000000..dd4f17f
--- /dev/null
+++ b/eth_tcp_sender/eth_tcp_sender.ino
@@ -0,0 +1,80 @@
+#include <NativeEthernet.h>
+
+byte mac[] = { 0x04, 0xE9, 0xE5, 0x10, 0x00, 0x01 };
+IPAddress ip(192, 168, 1, 100);
+IPAddress serverIP(192, 168, 1, 101);
+const int serverPort = 8888;
+int i;
+byte cnt = 0;
+
+union split_u16{
+  uint16_t size16;
+  byte size8[2];
+};
+
+union split_u16 split;
+
+EthernetClient client;
+#define max_package_size 1024
+
+uint16_t package_size = 1024;
+byte buffer[max_package_size];
+
+void setup() {
+    
+    Serial.begin(921600);
+    //while (!Serial);
+
+    Serial.println("Initializing Ethernet...");
+    Ethernet.begin(mac, ip);
+
+    if (Ethernet.hardwareStatus() == EthernetNoHardware) {
+        Serial.println("Ethernet hardware not found!");
+        while (true);
+    }
+
+    if (Ethernet.linkStatus() == LinkOFF) {
+        Serial.println("Ethernet cable not connected!");
+    }
+
+    Serial.println("Connecting to server...");
+
+    if (client.connect(serverIP, serverPort)) {
+        Serial.println("Connected to server!");
+    } else {
+        Serial.println("Connection failed.");
+    }
+
+    for (i = 0; i < max_package_size/*-random(300)*/; i++) {
+        buffer[i] = i;  // Fill buffer with sample data (0-255)
+    }
+    
+    package_size=i;
+    
+    delay(100);
+}
+
+void loop() {
+    send_package();
+    //delayMicroseconds(100);  // Small delay to avoid overloading the receiver
+}
+
+void send_package(){
+    if (!client.connected()) {
+        Serial.println("Connection lost. Reconnecting...");
+        client.stop();
+        delay(1000);
+        client.connect(serverIP, serverPort);
+        return;
+    }
+
+    const char SendMsg[] = "P_A";
+
+    //Confirm request is sent
+    client.write(SendMsg, sizeof(SendMsg));
+
+    //Serial.println("Sending packet...");
+    client.write(buffer, package_size);
+    cnt++; buffer[0] = cnt;
+
+}