Diff: main.cpp

Revision:

0:8ca71ccb52db

Child:

1:2012c31aee1b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jun 06 11:45:26 2016 +0000
@@ -0,0 +1,97 @@
+#include "mbed.h"
+#include "ESP8266.h"
+ 
+Serial pc(USBTX,USBRX);
+AnalogIn pot(PTB0); // pir senor input
+ESP8266 wifi(PTE0, PTE1, 115200); // baud rate for wifi
+char snd[255],rcv[1000];
+char http_cmd[300];
+ 
+//#define IP "data.sparkfun.com" 
+//#define IP "184.106.153.149"
+#define IP "192.168.0.39"
+ 
+float val = 0; //global variable
+
+char* Public_Key = "Xb3ovW3grvIMo31jd8p0HmPEba3O";
+char* Private_Key = "LPZe7qZLg7t0NnWbYD2XHrmB2AMq";
+
+/************ WiFi INTIALIZATION *********/
+ 
+void wifi_initialize(void);
+void wifi_send(void);
+ 
+int main () {
+    
+
+ wifi_initialize();
+ 
+    while (1) {
+       
+    val = pot.read();
+    pc.printf("\r\nPotentiometer value=%.3f \r\n", val);
+    pc.printf("Sending WiFi information\n\r");
+    wifi_send();
+    wait(4);
+    }
+}
+    
+void wifi_initialize(){
+    
+    pc.baud(9600);   
+    pc.printf("SET mode to AP\r\n");
+    wifi.SetMode(1);    // set ESP mode to 1
+    wifi.RcvReply(rcv, 1000);    //receive a response from ESP
+    pc.printf("%s",rcv);    //Print the response onscreen
+    pc.printf("Conneting to AP\r\n");
+    wifi.Join("Eduvance_WiFi", "eduvance");     // Your wifi username & Password 
+    wifi.RcvReply(rcv, 1000);    //receive a response from ESP
+    pc.printf("%s", rcv);    //Print the response onscreen
+    wait(8);     //waits for response from ESP
+    pc.printf("Getting IP\r\n");    //get IP addresss from the connected AP
+    wifi.GetIP(rcv);    //receive an IP address from the AP
+    pc.printf("%s", rcv);
+    wait(5); // Delay 5 sec to give the pir time to get snapshut of the surrounding
+    pc.printf("Initializing WiFi\r\n"); 
+}
+
+void wifi_send(void){
+
+    strcpy(snd,"AT+CIPMODE=0");//Setting WiFi into MultiChannel mode
+    wifi.SendCMD(snd);
+    //pc.printf(snd);
+    wifi.RcvReply(rcv, 3000);
+    pc.printf("%s", rcv);
+    
+    //WIFI updates the Status to Thingspeak servers//
+    strcpy(snd,"AT+CIPMUX=1");//Setting WiFi into MultiChannel mode
+    wifi.SendCMD(snd);
+    //pc.printf(snd);
+    wifi.RcvReply(rcv, 3000);
+    pc.printf("%s", rcv);
+    
+    sprintf(snd,"AT+CIPSTART=4,\"TCP\",\"%s\",8080",IP); //Initiate connection with server
+    wifi.SendCMD(snd);
+    //pc.printf(snd);
+    wifi.RcvReply(rcv, 3000);
+    pc.printf("%s", rcv);
+    
+    sprintf(http_cmd,"GET /input/%s?private_key=%s&val=%0.2f HTTP/1.0\n\n",Public_Key,Private_Key,val); //Post values 
+    pc.printf("%d",strlen(http_cmd));
+    strcpy(snd,"AT+CIPSEND=4,105");    //Send Number of open connections,Characters to send 
+    wifi.SendCMD(snd);
+    //pc.printf(snd);
+    wifi.RcvReply(rcv, 3000);
+    pc.printf("%s", rcv);
+    
+    sprintf(snd,"GET /input/%s?private_key=%s&val=%0.2f HTTP/1.0\n\n",Public_Key,Private_Key,val); //Post values 
+    strcpy(snd, http_cmd);
+    pc.printf("%s",http_cmd);
+    wifi.SendCMD(http_cmd);
+    wifi.RcvReply(rcv, 3000);
+    pc.printf("%s", rcv);
+    
+    //wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server
+    //wifi.RcvReply(rcv, 3000);
+    //pc.printf("%s", rcv);
+}
\ No newline at end of file