Fix: use tx_packet_cnt as test data and fix error in printing the wrong data.

Author: aentinger

Diff for: examples/UDP_Client/UDP_Client.ino

@@ -132,20 +132,25 @@ void loop()
 
   if ((now - prev_udp_packet_sent) > 1000)
   {
+    static int tx_packet_cnt = 0;
+
     prev_udp_packet_sent = now;
 
-    /* Send a UDP packet to the UDP server. */
-    int const tx_packet_size = snprintf((char *)udp_tx_msg_buf, sizeof(udp_tx_msg_buf), "%ld: hello server", millis());
+    /* Prepare UDP packet. */
+    int const tx_packet_size = snprintf((char *)udp_tx_msg_buf, sizeof(udp_tx_msg_buf), "Single-Pair Ethernet / 10BASE-T1S: packet cnt = %d", tx_packet_cnt);
 
+    /* Send a UDP packet to the UDP server. */
     tc6_inst->beginPacket(UDP_SERVER_IP_ADDR, UDP_SERVER_PORT);
     tc6_inst->write(udp_tx_msg_buf, tx_packet_size);
     tc6_inst->endPacket();
 
     Serial.print("[");
     Serial.print(millis());
     Serial.print("] UDP_Client sending: \"");
-    Serial.print(reinterpret_cast<char *>(udp_rx_msg_buf));
+    Serial.print(reinterpret_cast<char *>(udp_tx_msg_buf));
     Serial.println("\"");
+
+    tx_packet_cnt++;
   }
 
   /* Check for incoming UDP packets. */