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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.
Diff: main.cpp
- Revision:
- 1:5981ba4a8323
- Parent:
- 0:50932ef4b276
--- a/main.cpp Mon Apr 17 06:45:17 2017 +0000 +++ b/main.cpp Tue Apr 18 00:57:35 2017 +0000 @@ -25,9 +25,9 @@ #if defined(TARGET_NUCLEO_F411RE) -Serial pc(USBTX, USBRX); +//Serial pc(USBTX, USBRX); //WizFi310Internet wifi(PA_11, PA_12, D6, D7, D3, NC, 115200); -WizFi310Interface wifi(D8, D2, D7, D6, D9, NC, 115200); +//WizFi310Interface wifi(D8, D2, D7, D6, D9, NC, 115200); #endif #if defined(TARGET_WIZwiki_W7500) @@ -35,14 +35,14 @@ WizFi310Interface wifi(D1, D0, D7, D6, D8, NC, 115200); #endif -#define AP_SSID "DIR-815_Wiznet" -#define AP_PASSWORD "12345678" +#define AP_SSID "wizms1" +#define AP_PASSWORD "maker0701" #define AP_SECURITY NSAPI_SECURITY_WPA2 int main() { pc.baud(115200); - printf("WizFi310 NetworkSocketAPI TCP Client Example\r\n"); + printf("WizFi310 NetworkSocketAPI TCP Server Example\r\n"); wifi.connect(AP_SSID, AP_PASSWORD, AP_SECURITY);