Revision 4:1722a03793c6, committed 2018-05-22

Comitter:

mrbhatter

Date:

Tue May 22 05:02:54 2018 +0000

Parent:

2:97dbf542ebee

Commit message:

FRDM Thingspeak data and LED Control;

Changed in this revision

diff -r 97dbf542ebee -r 1722a03793c6 main.cpp
--- a/main.cpp	Sun Dec 03 13:10:28 2017 +0000
+++ b/main.cpp	Tue May 22 05:02:54 2018 +0000
@@ -1,125 +1,140 @@
 #include "mbed.h"
 #include "ESP8266.h"
-
+ 
 Serial pc(USBTX,USBRX);
-
-//POT sensor
-AnalogIn pot(PTB0);
-AnalogIn lit(PTB1);
+DigitalOut rled(LED1);
 
 //wifi UART port and baud rate
-ESP8266 wifi(PTE0, PTE1, 115200);
+ESP8266 wifi(PTE0, PTE1, 115200);    // Class Variable Pin dexlaration for WIFI
 
 //buffers for wifi library
-char resp[1000];
+char snd[255],resp[9000];
 char http_cmd[300], comm[300];
-
-int timeout = 8000; //timeout for wifi commands
+char url_response[9000];
 
-//SSID and password for connection
-#define SSID "Tenda_43DA50"
-#define PASS "Karkhana"
+int timeout = 5000; //timeout for wifi commands
 
+//SSID and password for connection 
+#define SSID "Karkhana"     
+#define PASS "Karkhana2018"  
+void control_led(void);
 //Remote IP
-#define IP "184.106.153.149" //  52.202.122.57
-//global variable
-float potvalue = 0;
-float litvalue = 0;
+#define IP "184.106.153.149"          // IP for thingspeak server. Remains same for al codes using thingspeak
+//#define IP "192.168.0.25"
+//waterlevelue global variable
+int ledstatus=0;
 
-//Update key for thingspeak
-char* Update_Key = "P2GMSKA9NY7KV0LW";
-
-//Wifi init function
-void wifi_initialize(void)
-{
-
+//Public and private keys for phant
+char* Update_Key = "QRCE7DOPVY3I49YN";                   // Copy the read key for your channel and paste it here.
+//char* Private_Key = "GPoWnRM60yidrB0e1pXD";
+ 
+//Wifi init function. Sets the module to connect to wifi accesspoint with ssid and password mentioned above
+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);
+    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);
+    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);
+    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);
+    wifi.setTransparent();          
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
     else
         pc.printf("No response while setting wifi passthrough. \r\n");
-    wait(1);
-
-
+    wait(1);    
+    
     pc.printf("******** Setting single connection mode ********\r\n");
-    wifi.SetSingle();
+    wifi.SetSingle();             
     wifi.RcvReply(resp, timeout);
-    if (wifi.RcvReply(resp, timeout))
-        pc.printf("%s",resp);
+    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)
-{
+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);
+    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&field2=%f&field1=%f",Update_Key,litvalue,potvalue);
-
+    
+    //create link 
+    sprintf(http_cmd,"/channels/501352/fields/1.json?api_key=%s&results=2",Update_Key);              // Forms the url for transmitting to thingspeak server. the format can be seen on thingspeak site as well
     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))
+    if (wifi.RcvReply(resp, timeout)){
+        pc.printf("--------------------------Request Response -------------------------------------------\r\n");   
         pc.printf("%s",resp);
+        pc.printf("--------------------------Request Response -------------------------------------------\r\n");
+        control_led();   
+        } 
     else
         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 ()
+void control_led(void)
 {
-    wifi_initialize();
-    while (1) {
-        potvalue = 255*pot.read();
-        litvalue = lit.read();
-        pc.printf("Current potvalue is = %.3f \r\n", potvalue);
-        pc.printf("Current light value is = %.3f \r\n", litvalue);
-        wifi_send();
-        wait(30);
+    int length=strlen(resp);
+    pc.printf("Length of response: %d\r\n",strlen(resp));
+    ledstatus=int(resp[length-13]);
+    pc.printf("LED Status is %c\r\n",resp[length-13]);
+    pc.printf("LED status is %d\r\n",ledstatus);
+    if(resp[length-13]==49){
+        pc.printf("LED ON");
+        rled=0;
+        }
+    else{
+        pc.printf("LED OFF");
+        rled=1;
+        }
+}
+        
+
+int main () {
+    
+    
+    wifi_initialize();   // Calls function defined above to initialize the wifi module
+    
+    while (1) {        
+        wifi_send();   // Calls function defined above to send data to thingspeak
+        //wait(5);
     }
 }
\ No newline at end of file