12.2. TCP Echo¶
12.2.1. Overview¶
This example shows TCP echo communication.
PC sends TCP data frames to MCU, and then MCU sends the data frames back to PC
12.2.2. Board Setting¶
Connect a USB port on PC to the PWR DEBUG port on the development board with a USB Type-C cable
Connect an Ethernet port on PC to a RGMII port or a RMII port on the development board with an Ethernet cable
12.2.3. Project Configuration¶
In the file cmakelists.txt , set a matched Ethernet PHY type according to the development board schematic，
e.g. “set(COFNIG_ENET_PHY_DP83848 1)”
12.2.4. Run Example¶
Compiling and Downloading
Running log is shown in the serial terminal as follows:
This is an ethernet demo: TCP Echo LwIP Version: 2.1.2 Local IP: 192.168.11.201 Speed Rate:100Mbps Reference Clock: Internal Clock Enet phy init passes ! Static IP: 192.168.11.201 NETMASK : 255.255.255.0 Gateway : 192.168.11.1
Run an Ethernet debugging tool
create and set a TCP client: TCP Server IP: 192.168.11.201/Port: 5001
Note: There is a necessary adjustment for Server IP according to the segment of LAN where PC resides
Connect
Enter and send any characters in the edit window
Watch the characters echoed from MCU
