Diff: main.cpp

Revision:

0:c46e0e7ec1bb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Dec 13 01:41:15 2018 +0000
@@ -0,0 +1,116 @@
+#include "mbed.h"
+#include "mbed.h"
+#include "hcsr04.h"
+#include "ESP8266.h"
+
+#define APIKEY QSL7YVXB73QHN2EK   //Put "Write key" of your channel in thingspeak.com 
+#define IP "184.106.153.149"       // IP Address of "api.thingspeak.com\"
+const char *WIFI_SSID = "ssid"; // Enter your Wi-Fi name 
+const char *WIFI_PASS = "password" ; // Enter your Wi-Fi password
+//#define WIFI_SSID "ssid"
+//#define WIFI_PASS "password"
+HCSR04  usensor(PTC12,PTC4);
+DigitalOut trigger(PTC12);
+DigitalOut RED(LED1); //monitor trigger
+DigitalOut GREEN(LED2); //monitor echo
+InterruptIn echo(PTC4);
+
+
+Serial pc (USBTX, USBRX); //Serial Communication
+ESP8266 wifi (PTC17, PTC16, 115200); //Setting baud rate for Wifi Esp Module
+char snd[255], rcv[1000];
+#define IP "184.106.153.149"//IP address of thingspeak.com
+unsigned int pulsedur;
+
+Timer pulsetime;
+
+void wifi_send(void);
+int main()
+{
+unsigned int distance;
+pc.baud(115200);
+//Initializing Wi-Fi
+pc.printf("SET mode to AP\r\n");
+wifi.SetMode(1); //set the mode of ESP to 1
+wifi.RcvReply(rcv,1000); //receive response by ESP
+pc.printf("%s",rcv); //print the response
+pc.printf("Connect to the Wifi\r\n"); //wifi name & password
+wifi.Join("WIFI_SSID","WIFI_PASS");
+wifi.RcvReply(rcv, 1000); //receive response by ESP
+pc.printf("%s\n",rcv); //print the response
+wait(8); //waiting for the response from ESP
+pc.printf("Getting IP\r\n"); //getting the IP address from the connected AP
+wifi.GetIP(rcv); //IP address received from AP
+pc.printf("%s\n",rcv); //print response on TeraTerm
+pc.printf("Initializing the Wi-Fi\r\n");
+
+
+//Loop to read distance, scale and print 
+while(1)
+{
+trigger=1;
+RED=1;
+GREEN=0;
+pulsetime.reset();
+wait_us(10);
+trigger=0;
+RED=0;
+while(echo==0){};
+GREEN=echo;
+pulsetime.start();
+while(echo==1){};
+pulsetime.stop();
+pulsedur = pulsetime.read_us();
+distance= (pulsedur*343)/20000;
+GREEN=0;
+pc.printf("Distance is %d cm\n\r" ,distance);
+pc.printf("Uploading status to the cloud\n\r");
+//wait before sending another ping since echo(s) may return
+wait(10);
+wifi_send();
+   };
+}
+//End of main program
+//Routing data to cloud
+void wifi_send(void)
+{
+ unsigned int distance;
+pc.printf("Uploading Wi-Fi Data");
+pc.printf("\r\nSet Wi-Fi into Single Channel Mode\r\n");
+strcpy(snd,"AT+CIPMUX=0"); //set wi-fi into single channel mode
+wifi.SendCMD(snd);
+pc.printf(snd);
+wifi.RcvReply(rcv,1000);
+pc.printf("\r\nMode status is %s",rcv);
+//Connecting to Thingspeak server
+pc.printf("\r\nConnecting to Thingspeak server\r\n");
+strcpy(snd,"AT+CIPSTART=\"TCP\",\"api.thingspeak.com\",80");
+pc.printf("\r\nSending data: %s",snd);
+wifi.SendCMD(snd);
+wifi.RcvReply(rcv,1000);
+pc.printf("\r\nServer status: %s",rcv);
+//Deliver Data
+pc.printf("\r\nDelivering Characters");
+strcpy(snd,"AT+CIPSEND=4,47\n");
+wifi.SendCMD(snd);
+wifi.RcvReply(rcv,1000);
+pc.printf("\r\nStatus sent: %s",rcv);
+//Upload values to cloud website
+pc.printf("Uploading data to Thingspeak\r\n");
+sprintf(snd,"GET https://api.thingspeak.com/update?key=QSL7YVXB73QHN2EK\n",distance);
+pc.printf("%s",snd);
+wifi.SendCMD(snd);
+wait(2);
+wifi.RcvReply(rcv,1000);
+pc.printf("\r\nStatus sent: %s",rcv);
+wait(2);
+//Closing connection
+pc.printf("\r\nClose the connection");
+strcpy(snd,"AT+CIPCLOSE");//Closing connection to the server
+wifi.SendCMD(snd);
+wifi.RcvReply(rcv,1000);
+pc.printf("%s",rcv);
+}
+
+
+