main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003 #include "Adafruit_SSD1306.h"
00004    
00005 // W7500 onboard LED & Init
00006 DigitalOut rled(LED1,1);
00007 DigitalOut gled(LED2,0);
00008 DigitalOut bled(LED3,1);
00009 
00010 // I2C Class
00011 I2C i2c(PA_10,PA_9);
00012 
00013 // OLED Class   
00014 Adafruit_SSD1306_I2c gOled(i2c,NC,0x78,64,128);
00015 
00016 // Declare Ethernet Class
00017 EthernetInterface eth;
00018 
00019 // Declare TCP Connection Class
00020 TCPSocketConnection sock;
00021 
00022 
00023 // LED desplay functions  
00024 void clean(){
00025     rled = 0; gled = 0; bled = 0;
00026 }
00027 void clouds(){
00028     rled = 1; gled = 1; bled = 1;
00029 }
00030 void thunderstorm(){
00031     while(1){
00032             rled = 0; gled = 0; bled = 0;
00033             wait(0.5);
00034             rled = 1; gled = 1; bled = 1;
00035             wait(0.5);
00036     };
00037 }
00038 void rain(){
00039     rled = 1; gled = 1; bled = 0;
00040 }
00041 void mist(){
00042     while(1){
00043             rled = 1; gled = 1; bled = 0;
00044             wait(0.5);
00045             rled = 1; gled = 1; bled = 1;
00046             wait(0.5);
00047     };
00048 }
00049 void haze(){
00050     rled = 0; gled = 1; bled = 0;
00051 }
00052 void fog(){
00053     while(1){
00054             rled = 1; gled = 0; bled = 0;
00055             wait(1.0);
00056             rled = 1; gled = 1; bled = 0;
00057             wait(1.0);
00058     };
00059 }
00060 void error(){
00061     rled = 1; gled = 1; bled = 1;
00062 }
00063 
00064 
00065 int main() {
00066       
00067     int phy_link;
00068     printf("Wait a second...\r\n");
00069     
00070     //--------- Have to modify the mac address-------------
00071     //                        0     1     2     3     4     5
00072     uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0xff, 0xff, 0x15};   
00073     // 0~2 회사코드. 
00074     
00075     
00076     eth.init(mac_addr);     //Use DHCP
00077     
00078     while(1){
00079         
00080         // phy link 
00081         do{
00082             phy_link = eth.ethernet_link();
00083             printf("...");
00084             wait(2);
00085         }while(!phy_link);
00086         printf("\r\n");
00087         
00088         eth.connect();
00089          
00090         printf("IP Address is %s\r\n\r\n", eth.getIPAddress());
00091         printf("MASK Address is %s\r\n\r\n", eth.getNetworkMask());
00092         printf("GATEWAY Address is %s\r\n\r\n", eth.getGateway());
00093         printf("MAC Address is %s\r\n\r\n", eth.getMACAddress());
00094         
00095         // TCP socket connect to openweather server 
00096         //TCPSocketConnection sock;
00097         sock.connect("api.openweathermap.org", 80);
00098         
00099         
00100         // GET method, to request weather forecast  
00101         //char http_cmd[] = "GET /data/2.5/weather?q=Seoul,kr&appid=a0ca47dd7f6066404629b3e1ad728981 HTTP/1.0\n\n";
00102         char http_cmd[] = "GET /data/2.5/weather?q=London,uk&appid=be22367918cefc57bf4b4735bcbaf052 HTTP/1.0\n\n";
00103 
00104         // be22367918cefc57bf4b4735bcbaf052
00105         //char http_cmd[] = "GET /data/2.5/weather?q=Berlin,de&appid=a0ca47dd7f6066404629b3e1ad728981 HTTP/1.0\n\n";
00106         
00107         sock.send_all(http_cmd, sizeof(http_cmd)-1);
00108         
00109         // get data into buffer
00110         char buffer[2048];
00111         int ret;
00112         while (true) {
00113             ret = sock.receive(buffer, sizeof(buffer)-1);
00114             if (ret <= 0)
00115                 break;
00116             buffer[ret] = '\0';
00117             printf("Received %d chars from server: %s\n", ret, buffer);     
00118         }
00119         printf("\r\n\r\n");
00120         
00121         // parsing current date, weather, city, tempurature 
00122         char *date;
00123         char *weather;
00124         char *city;
00125         char *temper;
00126         
00127         char cur_date[17] = {0};
00128         char weather_con[15] = {0};
00129         char city_name[10] = {0};
00130         char temper_data[3] = {0};
00131     
00132         int temp;
00133         int num100, num10, num1;
00134         
00135         //parding date
00136         date = strstr(buffer, "Date");
00137         for(int x=0;x<17;x++){
00138             cur_date[x] = date[x+6];
00139         }
00140             
00141         // parsing weather condition
00142         weather = strstr(buffer, "main");
00143         for(int i=0; i<15;i++){
00144             weather_con[i] = weather[i+7];
00145             if(weather_con[i] == 34){
00146                 weather_con[i] = 0;
00147                 break;
00148             }
00149         }
00150         
00151         // parsing city name
00152         city = strstr(buffer, "name");
00153         for(int j=0; j<10;j++){
00154             city_name[j] = city[j+7];
00155             if(city_name[j] == 34){
00156                 city_name[j] = 0;
00157                 break;
00158             }
00159         }
00160      
00161         //parsing current tempurature
00162         temper = strstr(buffer, "temp");
00163         for(int k=0; k<3;k++){
00164             temper_data[k] = temper[k+6];
00165         }
00166            
00167         //kelvin to celius converter
00168         num100 = temper_data[0]- 48;
00169         num10 = temper_data[1] - 48;
00170         num1 = temper_data[2]- 48;
00171         temp = (num100*100 + num10*10 + num1) - 273;
00172         
00173         // Debug message
00174         printf("city name   :  %s\r\n",  city_name);
00175         printf("weather     :  %s\r\n",  weather_con);
00176         printf("temperature :  %d\r\n\r\n",  temp);
00177         
00178         // OLED Display
00179         gOled.begin();
00180         gOled.clearDisplay();
00181         gOled.printf("%s\n\n", cur_date);
00182         gOled.printf("City    : %s\n", city_name);
00183         gOled.printf("Weather : %s\n", weather_con);
00184         gOled.printf("Temper  : %d\n", temp);
00185         gOled.display();
00186         gOled.setTextCursor(0,0);
00187         
00188         //LED display rely on weather condition
00189         if(strcmp(weather_con,"Clouds")==0)            clouds();
00190         else if(strcmp(weather_con,"Rain")==0)         rain();
00191         else if(strcmp(weather_con,"Thunderstorm")==0) thunderstorm();
00192         else if(strcmp(weather_con,"Clean")==0)        clean();
00193         else if(strcmp(weather_con,"Mist")==0)         mist();
00194         else if(strcmp(weather_con,"Haze")==0)         haze();
00195         else if(strcmp(weather_con,"Fog")==0)          fog();
00196         else error();
00197     
00198     
00199         //Disconnection
00200         sock.close();
00201         eth.disconnect();
00202         
00203         /* 
00204          *    everytime in delay, request weather forecast 
00205          */
00206         wait(20.0);
00207     
00208    };
00209 
00210 }