Siddharth Pimprikar / Mbed 2 deprecated temp_hum

DHT11 Temperature and humidity sensor using FRDM-K64f and Thingspeak

Dependencies:   DHT ESP8266 mbed

main.cpp@4:aa3e25ccc05d, 2016-12-04 (annotated)

Committer:
siddharthp
Date:
Sun Dec 04 21:21:05 2016 +0000
Revision:
4:aa3e25ccc05d
Parent:
3:49571dd386aa 
Minor changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
siddharthp 0:da7e87322045 1 #include "mbed.h"
siddharthp 0:da7e87322045 2 #include "DHT.h"
siddharthp 0:da7e87322045 3 #include "ESP8266.h"
siddharthp 0:da7e87322045 4
siddharthp 0:da7e87322045 5 DHT sensor(D4, DHT11);
siddharthp 0:da7e87322045 6 ESP8266 wifi(PTC17, PTC16, 115200);
siddharthp 0:da7e87322045 7 Serial pc(USBTX,USBRX);
siddharthp 0:da7e87322045 8 DigitalOut RED(LED1);
siddharthp 0:da7e87322045 9 char snd[255],rcv[1000];
siddharthp 0:da7e87322045 10 #define IP "184.106.153.149" // thingspeak.com IP Address
siddharthp 0:da7e87322045 11 void wifi_send(void);
siddharthp 0:da7e87322045 12
siddharthp 0:da7e87322045 13 int main()
siddharthp 0:da7e87322045 14 {
siddharthp 0:da7e87322045 15 pc.baud(115200);
siddharthp 0:da7e87322045 16 pc.printf("SET mode to AP\r\n");
siddharthp 0:da7e87322045 17 wifi.SetMode(1); // set ESP mode to 1
siddharthp 0:da7e87322045 18 wifi.RcvReply(rcv, 1000); //receive a response from ESP
siddharthp 0:da7e87322045 19 pc.printf("%s",rcv); //Print the response onscreen
siddharthp 0:da7e87322045 20 pc.printf("Conneting to Wifi\r\n");
siddharthp 4:aa3e25ccc05d 21 wifi.Join("ssid", "password"); // Your wifi username & Password
siddharthp 0:da7e87322045 22 wifi.RcvReply(rcv, 1000); //receive a response from ESP
siddharthp 0:da7e87322045 23 pc.printf("%s\n", rcv); //Print the response onscreen
siddharthp 0:da7e87322045 24 wait(8); //waits for response from ESP
siddharthp 0:da7e87322045 25 pc.printf("Getting IP\r\n"); //get IP addresss from the connected AP
siddharthp 0:da7e87322045 26 wifi.GetIP(rcv); //receive an IP address from the AP
siddharthp 0:da7e87322045 27 pc.printf("%s\n", rcv);
siddharthp 0:da7e87322045 28 while (1)
siddharthp 0:da7e87322045 29 {
siddharthp 0:da7e87322045 30 pc.printf("PLEASE STAY AWAY\r\n");
siddharthp 0:da7e87322045 31 pc.printf("Sending WiFi information\n");
siddharthp 0:da7e87322045 32 wifi_send();
siddharthp 1:402b14b56d24 33 RED=1;
siddharthp 0:da7e87322045 34 wait(2.0f);
siddharthp 1:402b14b56d24 35 RED=0;
siddharthp 0:da7e87322045 36 wait(1.5f);
siddharthp 0:da7e87322045 37 }
siddharthp 0:da7e87322045 38 }
siddharthp 0:da7e87322045 39 void wifi_send(void){
siddharthp 0:da7e87322045 40 int error = 0;
siddharthp 0:da7e87322045 41 float h = 0.0f, c = 0.0f;
siddharthp 0:da7e87322045 42
siddharthp 0:da7e87322045 43 wait(2.0f);
siddharthp 0:da7e87322045 44 error = sensor.readData();
siddharthp 0:da7e87322045 45 if (0 == error)
siddharthp 0:da7e87322045 46 {
siddharthp 0:da7e87322045 47 c = sensor.ReadTemperature(CELCIUS);
siddharthp 0:da7e87322045 48 h = sensor.ReadHumidity();
siddharthp 0:da7e87322045 49 //printf("Temperature in Celcius: %f\n", c);
siddharthp 0:da7e87322045 50 //printf("Humidity is %f\n", h);
siddharthp 0:da7e87322045 51 }
siddharthp 0:da7e87322045 52 else
siddharthp 0:da7e87322045 53 {
siddharthp 0:da7e87322045 54 printf("Error: %d\n", error);
siddharthp 0:da7e87322045 55 }
siddharthp 0:da7e87322045 56 //WIFI updates the Status to Thingspeak servers//
siddharthp 0:da7e87322045 57 strcpy(snd,"AT+CIPMUX=1\n");//Setting WiFi into MultiChannel mode
siddharthp 0:da7e87322045 58 wifi.SendCMD(snd);
siddharthp 0:da7e87322045 59 pc.printf(snd);
siddharthp 0:da7e87322045 60 wait(2.0);
siddharthp 0:da7e87322045 61 wifi.RcvReply(rcv, 1000);
siddharthp 0:da7e87322045 62 pc.printf("%s\n", rcv);
siddharthp 0:da7e87322045 63 wait(2);
siddharthp 0:da7e87322045 64 sprintf(snd,"AT+CIPSTART=4,\"TCP\",\"%s\",80\n",IP); //Initiate connection with THINGSPEAK server
siddharthp 0:da7e87322045 65 pc.printf(snd);
siddharthp 0:da7e87322045 66 wait(3.0);
siddharthp 0:da7e87322045 67 wifi.RcvReply(rcv, 1000);
siddharthp 0:da7e87322045 68 pc.printf("%s\n", rcv);
siddharthp 0:da7e87322045 69 wait(2);
siddharthp 0:da7e87322045 70 strcpy(snd,"AT+CIPSEND=4,47\n"); //Send Number of open connections,Characters to send
siddharthp 0:da7e87322045 71 wifi.SendCMD(snd);
siddharthp 0:da7e87322045 72 pc.printf(snd);
siddharthp 0:da7e87322045 73 wait(2.0);
siddharthp 0:da7e87322045 74 wifi.RcvReply(rcv, 1000);
siddharthp 0:da7e87322045 75 pc.printf("%s\n", rcv);
siddharthp 0:da7e87322045 76 wait(2);
siddharthp 4:aa3e25ccc05d 77 sprintf(snd,"GET http://api.thingspeak.com/update?api_key=**********&field1=%1.3f\n", c); //Post values to thingspeak
siddharthp 0:da7e87322045 78 pc.printf("%s",snd);
siddharthp 0:da7e87322045 79 wifi.SendCMD(snd);
siddharthp 0:da7e87322045 80 wait(2);
siddharthp 4:aa3e25ccc05d 81 sprintf(snd,"GET http://api.thingspeak.com/update?api_key=***********&field2=%1.3f\n", h); //Post values to thingspeak
siddharthp 0:da7e87322045 82 pc.printf("%s",snd);
siddharthp 0:da7e87322045 83 wifi.SendCMD(snd);
siddharthp 0:da7e87322045 84 wait(2);
siddharthp 0:da7e87322045 85 wifi.RcvReply(rcv, 1000);
siddharthp 0:da7e87322045 86 pc.printf("%s", rcv);
siddharthp 0:da7e87322045 87 wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server
siddharthp 0:da7e87322045 88 wifi.RcvReply(rcv, 1000);
siddharthp 0:da7e87322045 89 pc.printf("%s", rcv);
siddharthp 0:da7e87322045 90 }