Diff: main.cpp

Revision:

0:9d11a3afff01

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jun 15 06:16:23 2015 +0000
@@ -0,0 +1,65 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "stdio.h"
+
+float lux(void)
+{
+AnalogIn ain(p15);
+
+float vr=0,lr=0;
+   
+float vol[12]={0.36,0.61,0.8,0.9,1.23,1.45,1.81,2.06,2.62,2.81,3.02,3.25};
+float lux[12]={27000,20000,16000,11000,4000,1500,833,578,201,104,40,23};
+
+int i;
+float m=0;
+
+vr=ain*3.3;
+for(i=0; vr> vol[i];i++);
+m = ((lux[i]-lux[i+1])/(vol[i]-vol[i+1]));
+lr=lux[i+1]+(m*(vr-(vol[i+1])));
+
+return vr;
+}
+
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+int main() {
+    float l=0;
+    EthernetInterface eth;
+    eth.init(); //Use DHCP
+    eth.connect();
+    printf("IP Address is %s\n", eth.getIPAddress());
+    char* public_key = "wpv0ajajxXsllRZOlbn0" ;
+    char* private_key = "wzep7E7EPDCRR0b5Rdga" ;
+    char http_cmd[256];
+    for(int i=0 ; i<5 ;i++)
+    {
+        //char c=i;
+        TCPSocketConnection sock;
+        sock.connect("data.sparkfun.com", 80);
+    l=lux();
+    printf("volt = %.2f",l);
+       sprintf(http_cmd,"GET /input/%s?private_key=%s&var1=%.2f HTTP/1.0\n\n", public_key, private_key, l);
+    //char http_cmd[] = "GET /input/wpv0ajajxXsllRZOlbn0?private_key=wzep7E7EPDCRR0b5Rdga&var1=%c HTTP/1.0\n\n",i;
+        sock.send_all(http_cmd, sizeof(http_cmd)-1);
+    
+    char buffer[300];
+    int ret;
+    while (true) {
+        ret = sock.receive(buffer, sizeof(buffer)-1);
+        if (ret <= 0)
+            break;
+        buffer[ret] = '\0';
+        printf("Received %d chars from server:\n%s\n", ret, buffer);
+    }
+    sock.close();
+     
+    
+    }
+    eth.disconnect();
+    
+    while(1) {}
+}