Diff: main.cpp

Revision:

0:34d3f68b920e

Child:

1:21d76b260bc6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Mar 18 09:00:35 2017 +0000
@@ -0,0 +1,123 @@
+#include "mbed.h"
+#include "ESP8266.h"
+ 
+Serial pc(USBTX,USBRX);
+
+//POT sensor 
+AnalogIn pot(PTB0); 
+
+//wifi UART port and baud rate
+ESP8266 wifi(PTE0, PTE1, 115200); 
+
+//buffers for wifi library
+char snd[255],resp[1000];
+char http_cmd[300], comm[300];
+
+int timeout = 8000; //timeout for wifi commands
+
+//SSID and password for connection
+#define SSID "eduvanceAP" //"AmeyaHotspot"//"IoTServer" //"AmeyaHotspot" //"Xperia S_f19d" 
+#define PASS "winteriscoming"  //"12345678" //"iotserver"  //"12345678" //"profpappu" 
+
+//Remote IP
+#define IP "184.106.153.149"
+//#define IP "https://api.thingspeak.com"
+//#define IP "192.168.0.25"
+//waterlevelue global variable
+float waterlevel = 0; 
+
+//Public and private keys for phant
+char* Update_Key = "4K5STYBPH6MC8O54";
+//char* Private_Key = "GPoWnRM60yidrB0e1pXD";
+ 
+//Wifi init function
+void wifi_initialize(void){
+    
+    pc.printf("******** Resetting wifi module ********\r\n");
+    wifi.Reset();
+    
+    //wait for 5 seconds for response, else display no response receiveed
+    if (wifi.RcvReply(resp, 5000))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response");
+    
+    pc.printf("******** Setting Station mode of wifi with AP ********\r\n");
+    wifi.SetMode(1);    // set transparent  mode
+    if (wifi.RcvReply(resp, timeout))    //receive a response from ESP
+        pc.printf("%s",resp);    //Print the response onscreen
+    else
+        pc.printf("No response while setting mode. \r\n");
+    
+    pc.printf("******** Joining network with SSID and PASS ********\r\n");
+    wifi.Join(SSID, PASS);     
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);   
+    else
+        pc.printf("No response while connecting to network \r\n");
+        
+    pc.printf("******** Getting IP and MAC of module ********\r\n");
+    wifi.GetIP(resp);     
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while getting IP \r\n");
+    
+    pc.printf("******** Setting WIFI UART passthrough ********\r\n");
+    wifi.setTransparent();          
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while setting wifi passthrough. \r\n");
+    wait(1);    
+    
+    pc.printf("******** Setting single connection mode ********\r\n");
+    wifi.SetSingle();             
+    wifi.RcvReply(resp, timeout);
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while setting single connection \r\n");
+    wait(1);
+}
+
+void wifi_send(void){
+    
+    pc.printf("******** Starting TCP connection on IP and port ********\r\n");
+    wifi.startTCPConn(IP,80);    //cipstart
+    wifi.RcvReply(resp, timeout);
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while starting TCP connection \r\n");
+    wait(1);
+    
+    //create link 
+    sprintf(http_cmd,"/update?api_key=%s&field1=%f",Update_Key,waterlevel); 
+    pc.printf(http_cmd);
+    
+    pc.printf("******** Sending URL to wifi ********\r\n");
+    wifi.sendURL(http_cmd, comm);   //cipsend and get command
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+ 
+    pc.printf("No response while sending URL \r\n");
+    
+    //wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server
+    //wifi.RcvReply(resp, timeout);
+    //pc.printf("%s", resp);
+}
+
+int main () {
+    
+    
+    wifi_initialize();
+    
+    while (1) {
+        waterlevel = 255*pot.read();
+        pc.printf("Current waterlevel is = %.3f \r\n", waterlevel);
+        
+        wifi_send();
+        //wait(5);
+    }
+}
\ No newline at end of file