Diff: main.cpp

Revision:

0:14edcbab30cc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Apr 29 01:23:17 2012 +0000
@@ -0,0 +1,122 @@
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+#include "TextLCD.h"
+//Geolocation using IP address - get web page with location data
+// displays location fields on LCD  from web page ";....location text...;"
+// see http://mbed.org/users/4180_1/notebook/geolocation-lcd-display/
+TextLCD lcd(p15, p16, p17, p18, p19, p20); // rs, e, d0-d3
+EthernetNetIf eth;
+HTTPClient http;
+
+void parse(char buffer[], int *j, char *string) {
+//extracts next location string data item from buffer
+    int i=0;
+    for (i=0; i<=strlen(buffer); i++) {
+        if ((buffer[*j+i] == ';')||(buffer[*j+i] == '\0' )) {
+            //semicolon is the string field delimiter
+            string[i]=0;
+            *j=*j+i+1;
+            break;
+        } else string[i]=buffer[*j+i];
+    }
+}
+
+int main() {
+    char result [4]={0};
+    char ip [17]={0};
+    char country_abbr[10]={0};
+    char country[60]={0};
+    char region[40]={0};
+    char city[60]={0};
+    char zipcode[10]={0};
+    char latitude[10]={0};
+    char longitude[10]={0};
+    char timezone[7]={0};
+    char buffer[256]={0};
+    float flatitude=0.0;
+    float flongitude=0.0;
+    float ftimezone=0.0;
+    int j=0;
+
+    //Setup network - get IP address using DHCP
+    lcd.cls();
+    lcd.printf("Net setup\n");
+    EthernetErr ethErr = eth.setup();
+    if (ethErr) {
+        lcd.printf("Error %d", ethErr);
+        return -1;
+    }
+    lcd.printf(" Net OK");
+    wait(.5);
+    lcd.cls();
+    lcd.printf("IP Address\nGeolocation API");
+    HTTPText txt;
+    //iPinfoDB API  - get web page with location data
+    //Insert your free key from www.ipinfo.com for the API in the URL below
+    HTTPResult r = http.get("http://api.ipinfodb.com/v3/ip-city/?key=PUT_YOUR_API_KEY_HERE", &txt);
+    if (r==HTTP_OK) {
+        //got web page text data OK
+        strcpy(buffer,txt.gets());
+        wait(1);
+        while (1) {
+            j=0;
+            //parse and display each of the API's location information strings on the LCD
+            parse(buffer, &j, result);
+            lcd.cls();
+            lcd.printf("result: %s\n", result);
+            if (result[0]!='O') { //needs valid key
+                wait(1);
+                lcd.cls();
+                lcd.printf("Get Free API key");
+                lcd.printf("www.iPinfoDB.com");
+                return(-1);
+            }
+            wait(1);
+            j++;
+            parse(buffer, &j, ip);
+            lcd.cls();
+            lcd.printf("IP address: \n %s", ip);
+            wait(2);
+            parse(buffer, &j, country_abbr);
+            lcd.cls();
+            lcd.printf("Country code: \n %s", country_abbr);
+            wait(2);
+            parse(buffer, &j, country);
+            lcd.cls();
+            lcd.printf("Country: \n%s", country);
+            wait(2);
+            parse(buffer, &j, region);
+            lcd.cls();
+            lcd.printf("Region or State:%s", region);
+            wait(2);
+            parse(buffer, &j, city);
+            lcd.cls();
+            lcd.printf("City: \n%s", city);
+            wait(2);
+            parse(buffer, &j, zipcode);
+            lcd.cls();
+            lcd.printf("Zipcode: \n %s", zipcode);
+            wait(2);
+            parse(buffer, &j, latitude);
+            sscanf(latitude,"%f",&flatitude);
+            lcd.cls();
+            lcd.printf("Latitude: \n %f", flatitude);
+            wait(2);
+            parse(buffer, &j, longitude);
+            sscanf(longitude,"%f",&flongitude);
+            lcd.cls();
+            lcd.printf("Longitude: \n %f", flongitude);
+            wait(2);
+            parse(buffer, &j, timezone);
+            sscanf(timezone,"%f",&ftimezone);
+            lcd.cls();
+            lcd.printf("Timezone: \n %f", ftimezone);
+            wait(4);
+        }
+    } else {
+        lcd.cls();
+        lcd.printf("HTTP Error %d", r);
+        return -1;
+    }
+}