TCP Client, WIZwiki-W7500. It will get weather of South Korea from openweathermap.org

Dependencies:   WIZnetInterface mbed

Revision:
0:af541535ef54
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon May 30 05:02:08 2016 +0000
@@ -0,0 +1,43 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+int main() {
+   
+    int phy_link;
+    printf("Wait a second...\r\n");
+    uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x1c, 0xa8, 0x95}; 
+    
+    EthernetInterface eth;
+    eth.init(mac_addr); //Use DHCP
+    eth.connect();
+    
+     do{
+     phy_link = eth.ethernet_link();
+     printf("...");
+     wait(2);
+     }while(!phy_link);
+     printf("\r\n");
+     
+    printf("IP Address is %s\r\n", eth.getIPAddress());
+    
+    TCPSocketConnection sock;
+    sock.connect("api.openweathermap.org", 80);
+    
+
+    char http_cmd[] = "GET /data/2.5/weather?q=Seoul,kr HTTP/1.0\n\n";
+    sock.send_all(http_cmd, sizeof(http_cmd)-1);
+
+    char buffer[400];
+    int ret;
+    while (true) {
+        ret = sock.receive(buffer, sizeof(buffer)-1);
+        if (ret <= 0) break;
+        buffer[ret] = '\0';
+        printf("Received %d chars from server: %s\n", ret, buffer);     
+    }
+
+    sock.close();
+    
+    eth.disconnect();
+
+}
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