Weather info from OPenweathermap.org with TCPClient on WIZwiki-W7500
Dependencies: WIZnetInterface mbed
Fork of TCPClient_HelloWorld_WIZwiki-W7500 by
Prerequisite
This example is for obtainning and printting data from server(OpenWeatherMap). WIZwiki-W7500 is TCP client mode.
To implement this function, you need a Platform board, network Interface board.
- WIZwiki-W7500 from WIZnet (Platform board and Ethernet I/F board)
Hardware Configuration
WIZwiki-W7500 Pin map
Software
Select the city
char http_cmd0[] = "GET /data/2.5/weather?q=Seoul,kr&appid="; char http_cmd1[] = API_key; char http_cmd2[] = " HTTP/1.0\n\n"; sock.send_all(http_cmd0, sizeof(http_cmd0)-1); sock.send_all(http_cmd1, sizeof(http_cmd1)-1); sock.send_all(http_cmd2, sizeof(http_cmd2)-1);
Caution
This example requires an API key that can be obtained by signning up to the openweathmap site. //
Diff: main.cpp
- Revision:
- 0:d7c890f9ee69
- Child:
- 2:c4fef61e151d
diff -r 000000000000 -r d7c890f9ee69 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Jun 25 03:01:49 2015 +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, 0x00, 0x01, 0x02}; + + 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(); + +} \ No newline at end of file