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TCP Client, WIZwiki-W7500ECO. It will get weather of South Korea from openweathermap.org
Dependencies: WIZnetInterface mbed
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Prerequisite¶
This example is for obtainning and printting data from server(OpenWeatherMap). WIZwiki-W7500ECO is TCP client mode.
To implement this function, you need a Platform board, network Interface board.
- WIZwiki-W7500ECO from WIZnet (Platform board and Ethernet I/F board)
Hardware Configuration¶
WIZwiki-W7500ECO Pin map¶
Software¶
Select the city
main.cpp
#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, 0x01, 0x02, 0x03}; 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(); }