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

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

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.

Diff: main.cpp

Revision:
0:50932ef4b276
Child:
1:5981ba4a8323
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 17 06:45:17 2017 +0000
@@ -0,0 +1,81 @@
+/* NetworkSocketAPI Example Program
+ * Copyright (c) 2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+#include "mbed.h"
+#include "TCPSocket.h"
+#include "mbed.h"
+#include "WizFi310Interface.h"
+#include "TCPSocket.h"
+#include "TCPServer.h"
+
+#define TARGET_NUCLEO_F411RE
+
+
+#if defined(TARGET_NUCLEO_F411RE)
+Serial pc(USBTX, USBRX);
+//WizFi310Internet wifi(PA_11, PA_12, D6, D7, D3, NC, 115200);
+WizFi310Interface wifi(D8, D2, D7, D6, D9, NC, 115200);
+#endif
+
+#if defined(TARGET_WIZwiki_W7500)
+Serial pc(USBTX, USBRX);
+WizFi310Interface wifi(D1, D0, D7, D6, D8, NC, 115200);
+#endif
+
+#define AP_SSID "DIR-815_Wiznet"
+#define AP_PASSWORD "12345678"
+#define AP_SECURITY NSAPI_SECURITY_WPA2
+
+int main()
+{
+    pc.baud(115200);
+    printf("WizFi310 NetworkSocketAPI TCP Client Example\r\n");
+    
+    wifi.connect(AP_SSID, AP_PASSWORD, AP_SECURITY);
+    
+    const char *ip = wifi.get_ip_address();
+    const char *mac = wifi.get_mac_address();
+    printf("IP address is: %s\r\n", ip ? ip : "No IP");
+    printf("MAC address is: %s\r\n", mac ? mac : "No MAC");
+
+    TCPServer srv;
+    TCPSocket clt_sock;
+    SocketAddress clt_addr;
+    
+    srv.open(&wifi);
+    srv.set_blocking(true);
+    srv.bind(80);
+    srv.listen();
+    srv.accept(&clt_sock);
+
+    char buffer[512];
+
+    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);
+        }
+    }
+}