WIZnet / Mbed 2 deprecated WizFi310_TCP_Echo_Server_Example

TCP Echo Server Example using WizFi310

Dependencies:   NetworkSocketAPI WizFi310Interface mbed

Prerequisite

This example shows that Wizwiki-W7500 and WizFi310 operates as a TCP server. When receiving data from a TCP client, it returns same data.

To implement this function, you need a Platform board and Wi-Fi board. Below are what we used.

• WIZwiki-W7500 from WIZnet (Platform board)
• WizFi310 from WIZnet (Wi-Fi board)

WIZwiki-W7500 Pin map

• D0 is for RXD, D1 is for TXD
  
• D6 is for CTS, D7 is for RTS
• D9 is for RESET
  

WizFi310 Pin map

• J1 is for RXD, J3 is for TXD
  
• SW6-1 is connected to D6 for RTS, SW6-2 is connected to D7 for CTS
  
• SW5-3 is connected to D9 for RESET
  

Software

Connect to Wi-Fi

wifi.connect(AP_SSID, AP_PASSWORD, AP_SECURITY);

Get information

const char *ip = wifi.get_ip_address();
const char *mac = wifi.get_mac_address();

Receive data and return to TCP client

while (true)
{
    int n = clt_sock.recv(buffer, sizeof(buffer));
    if( n < 0 )
    {
        clt_sock.close();
        srv.close();
    }
    if( n > 0 )
    {
        buffer[n] = '\0';
        printf("length : %d\r\n", n);
        clt_sock.send(buffer, n);
    }
}

Caution

TCP client and server should be in a same network.

revise Code description (TCP client -> server)