![](/media/cache/group/WIZnet_logo_001.jpg.50x50_q85.jpg)
Openweathermap example for WizFi310
Dependencies: NetworkSocketAPI WizFi310Interface mbed
Prerequisite
This example is for obtainning and printting data from OpenWeatherMap(Server).
WIZwiki-W7500 and WizFi310 Shield act as TCP client mode.
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)
Hardware Configuration
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
main.cpp
#include "TCPSocket.h" #include "mbed.h" #include "WizFi310Interface.h" #if defined(TARGET_WIZwiki_W7500) WizFi310Interface wifi(D1, D0, D7, D6, D9, NC, 115200); Serial pc(USBTX,USBRX); #endif #define AP_SSID "SSID" #define AP_PASSWORD "PASS" #define AP_SECURITY NSAPI_SECURITY_WPA2 #define CITY "Seoul" #define API_KEY "API KEY" int main() { int errConnect; char http_cmd[1000] = ""; char buffer[2048] = ""; pc.baud(115200); printf("WizFi310 NetworkSocketAPI TCP Client OpenWeatherMap 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"); SocketAddress addr(&wifi, "api.openweathermap.org"); printf("api.openweathermap.org resolved to: %s\r\n", addr.get_ip_address()); TCPSocket socket(&wifi); socket.set_timeout(1000); //Set Block Mode. errConnect = socket.connect("api.openweathermap.org", 80); //errConnect = socket.connect("222.98.173.233", 5000); while (true) { if(errConnect!=0) { printf("\r\ncould not connect to socket : error = %d\r\n", errConnect); errConnect = socket.connect("api.openweathermap.org", 80); } else { printf("socket connected\r\n"); break; } } sprintf((char *)http_cmd,"GET /data/2.5/weather?q=%s,uk&appid=%s HTTP/1.0\r\nHost: api.openweathermap.org\r\nConnection: close\r\n\r\n", CITY, API_KEY); socket.send(http_cmd, sizeof(http_cmd)); socket.recv(buffer, sizeof(buffer)); printf("%s",buffer); socket.close(); wifi.disconnect(); printf("Done\r\n"); }
Caution
This example requires an API key that can be obtained by signning up to the openweathmap site. //
mbed.bld@0:dcc1cf05125a, 2017-04-12 (annotated)
- Committer:
- cliff1
- Date:
- Wed Apr 12 01:12:07 2017 +0000
- Revision:
- 0:dcc1cf05125a
- Child:
- 1:d6af10793d2b
First release
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
cliff1 | 0:dcc1cf05125a | 1 | https://mbed.org/users/mbed_official/code/mbed/builds/856d2700e60b |