This repository provides MPLAB® X IDE projects that will work out of the box with the hardware and software listed below. The solutions in the repository include functionalities for the User Datagram Protocol (UDP), Transmission Control Protocol (TCP) Server and TCP Client Demos. Note that the TCP/IP Lite stack needs to be serviced every one second and the timer callback function needs to be set to one second. Change the pin allocations for the Serial Peripheral Interface (SPI), Switch and LED if a different device is used.

• MPLAB X IDE v6.10 or later
• MPLAB XC8 v2.41 or later
• MPLAB Code Configurator v5.3.7 or later
• TCP/IP Lite Stack v5.0.0
• Ethernet Drivers Library v6.0.0
• TCPIP Demo GUI v1.0
• Wireshark Tool

• Curiosity High Pin Count (HPC) Development Board
• PIC16F18857 in SPDIP Packaging
• Serial Ethernet 2 Board

• Microchip Ethernet Controllers
• Microchip Evaluation Boards

1. Place the PIC16F18857 in the 28-pin socket on Curiosity HPC Development board.

2. Connect the Serial Ethernet 2 Board to the mikroBUS™ 1 port on the Curiosity HPC Development board and set the DIP switches according to the following connection diagram:
   
   

3. The pins were set in MPLAB Code Configurator based on the available pins on the PIC16F18857 and Curiosity HPC board.
   
   

1. Open the MPLAB X IDE. Connect the Curiosity HPC Development board with PIC16F18857 installed in the 28-pin socket.
   

2. From the downloaded projects, open encx24j600-udp-solution.X.
   Right click the project name and select Set as Main Project.
   
   
   

3. Open the Windows Command Prompt application on your PC. Type ipconfig to get the IP address of your PC.
   
   
   

4. Go to Source Files\App Files\src and open udp_demo.c. Under the function UDP_Demo_Initialize():

   • Modify the destination IP address with PC IP address as noted in Step 3
   • Modify the destination port (anything in the range of dynamic ports)
     
   
   

5. Go to Source Files\MCC Generated Files\tcpiplite\src\ and open udpv4_port_handler_table.c.

   • In UDP_CallBackTable[], add the following code to perform UDP Receive: {65531, UDP_Demo_Recv}.
     65531 is the port chosen in Step 4.
     
   
   

6. Launch Wireshark. From the Capture menu, click Options.
   Select an interface from the list to which your HPC Development board and PC are connected, click Start for capturing packets.
   Or select the respective interface on the start screen of Wireshark.
   E.g., Ethernet from the attached screenshot at Step 3 above.
   
   
   

7. In Wireshark, set the filter field as dhcp||icmp and hit 'Enter' or click the arrow on the right end.
   
   
   

8. Go back to MPLAB X IDE and click Make and Program Device to program the code to the device.
   
   
   

9. In Wireshark, check the DHCP packets to verify that the device is connected to the selected network. The handshake procedure will look as shown below:
   
   
   

10. In Wireshark, click the “ACK” packet (or double click to open in new window). Expand “Dynamic Host Configuration Protocol” to get the device IP address.
    

11. Open the Java application TCPIP_Demo.exe. Go to the UDP tab and assign the same port number as udpPacket.destinationPortNumber in UDP_DEMO_Send().
    E.g., 65531 was chosen in Step 4.
    Click the Listen button. Click “Allow Access” if warning occurs. Assign the IP address of your HPC Development board which was found from Step 10.
    E.g., 10.14.5.112 from the attached screenshot in Step 10 above.
    Click the Claim button.
    

12. In Wireshark, set the filter in the format dhcp||udp.port==65531 but with your chosen port number, 65531 in this example.
    

13. In Demo GUI, under UDP Send/Receive click the LED 1 to turn ON LED0 on the Curiosity HPC Development board and observe the Wireshark capture.
    

14. In Demo GUI, inside the Send Data box type something (e.g., "Hello CNano").
    
    Click the Send button. Check the packet in the Wireshark capture.
    

15. Press the Switch SW0 on the Curiosity HPC Development board. Check the packet in the Wireshark capture.
    

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1. Open MPLAB X IDE. Connect the Curiosity HPC Development board with PIC16F18857 installed in the 28-pin socket.
   
   

2. From the downloaded projects, open encx24j600-tcp-client-solution.X.
   Right click the project name and select Set as Main Project.
   
   
   

3. Open the Windows Command Prompt application on your PC. Type ipconfig to get the IP address of the PC.
   
   
   

4. Go to Source Files\App Files\src and open tcp_client_demo.c from the project files. Under the function TCP_Client_Initialize():

   • Modify the remote IP address with PC’s IP address as noted in Step 3
   • Modify remote port (anything in the range of dynamic ports)
     
   
   

5. Click the Make and Program Device to program the code to the device.
   
   
   

6. Open the Java application TCPIP_Demo.exe. Go to the TCP Server Demo tab and assign the same port as remoteSocket.port in TCP_Client_Initialize().
   E.g., 65534 chosen in Step 4.
   Click the Listen button.
   The status of the TCP connection is printed inside the STATUS text box.
   
   
   

7. Launch Wireshark. From the Capture menu, click Options.
   Select an interface from the list to which your HPC development board and PC are connected, click Start for capturing packets.
   Or select the respective interface on the start screen of Wireshark.
   E.g., Ethernet from the attached screenshot at Step 3 above.
   
   
   

8. In Wireshark, set the filter in the format dhcp||tcp.port==65534 but with the chosen port number instead of 65534.
   
   
   

9. After the connection is established, type some text inside the Send text box and click the Send button.
   The text sent is displayed inside the Sent/Received Data text box.
   
   
   

10. In Wireshark, keeping the same filter settings as in Step 8, check the TCP packets being sent from the PC to the HPC Development board.
    

11. Click the Led 0 button inside the LED Control Field. This will turn on LED0 on the HPC Development board.
    

12. In Wireshark, keeping the same filter settings as in Step 8, check the TCP packets being sent from the HPC Development board to the PC.
    

13. Click the Disconnect button from the Demo GUI to close the TCP connection. Inside the STATUS text box a message will appear stating "Client Disconnected".
    

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1. Open MPLAB X IDE. Connect the Curiosity HPC Development board with PIC16F18857 installed in the 28-pin socket.
   
   

2. From the downloaded projects, open encx24j600-tcp-server-solution.X.
   Right click the project name and select Set as Main Project.
   
   
   

3. Launch Wireshark. From the Capture menu, click Options.
   Select an interface from the list to which the HPC Development board and PC are connected, click Start for capturing packets.
   Or select the respective interface on the start screen of Wireshark.
   
   
   

4. In Wireshark, set the filter field as dhcp||icmp and hit 'Enter' or click the arrow on the right end.
   
   
   

5. Go back to MPLAB X IDE and click Make and Program Device to program the code to the device.
   
   
   

6. In Wireshark, check the DHCP packets to verify that the device is connected to the selected network. The handshake procedure will look as shown below:
   
   
   

7. In Wireshark, click the “ACK” packet (or double click to open a new window). Expand the “Dynamic Host Configuration Protocol” to get the device IP address.
   
   
   

8. Open the Java application TCPIP_Demo.exe. Go to the TCP Client Demo tab.
   Assign the server IP address as the IP address noted from Wireshark in Step 7.
   Assign the port number as 7.
   Click the Connect button. The status of the TCP connection is printed inside the STATUS text box.
   
   
   

9. After the connection is established, type some text inside the Send text box and click the Send button.
   The text sent is echoed and displayed inside the Sent/Received Data text box.
   
   
   

10. In Wireshark, set the filter as dhcp||tcp.port==7
    Check the TCP packets being sent from the HPC Development board to the PC.
    

11. Push the Disconnect button in the Demo GUI to close the TCP connection. Inside the STATUS text box a message will appear stating "Connection Closed".
    
    
    

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