Rajas Chitanvis / Mbed 2 deprecated ESP8266_test

thingspeak using ESP8266 wifi module

Dependencies:   mbed ESP8266

main.cpp@5:ee26bce360d0, 2019-04-19 (annotated)

Committer:
rajas1812
Date:
Fri Apr 19 20:22:31 2019 +0000
Revision:
5:ee26bce360d0
Parent:
4:c747d23ffd0e 
Thingspeak using ESP8266 wifi module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
SIT2016 0:8ca71ccb52db 1 #include "mbed.h"
agaikwad 3:164296bb4985 2 #include "ESP8266.h" // Include header file from Author: Antonio Quevedo
agaikwad 3:164296bb4985 3 #include "math.h"
agaikwad 3:164296bb4985 4 #include <string>
agaikwad 3:164296bb4985 5
rajas1812 5:ee26bce360d0 6 #define APIKEY XE2W5EIXWN6LA234 //Put "Write key" of your channel in thingspeak.com
agaikwad 3:164296bb4985 7 #define IP "184.106.153.149" // IP Address of "api.thingspeak.com\"
rajas1812 5:ee26bce360d0 8 #define WIFI_SSID "RajasiPhone"
rajas1812 5:ee26bce360d0 9 #define WIFI_PASS "youcantguessmypassword"
agaikwad 3:164296bb4985 10
SIT2016 0:8ca71ccb52db 11 Serial pc(USBTX,USBRX);
SIT2016 1:2012c31aee1b 12
agaikwad 3:164296bb4985 13 ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi
SIT2016 1:2012c31aee1b 14
agaikwad 3:164296bb4985 15 char snd[255],rcv[1000],snd_Data[255]; //snd= string used to send command to ESP 8266 wii and rcv = string used to receive response from ESP8266 wifi module
SIT2016 1:2012c31aee1b 16
agaikwad 3:164296bb4985 17 void esp_initialize(void); // Function used to initialize ESP8266 wifi module
agaikwad 3:164296bb4985 18 void esp_send(void); // Function used to connect with thingspeak.com and update channel using ESP8266 wifi module
SIT2016 1:2012c31aee1b 19
agaikwad 3:164296bb4985 20 //test variable
agaikwad 3:164296bb4985 21 float i=0;
agaikwad 3:164296bb4985 22 float j=10;
SIT2016 1:2012c31aee1b 23
agaikwad 3:164296bb4985 24 int main()
agaikwad 3:164296bb4985 25 {
SIT2016 1:2012c31aee1b 26
agaikwad 3:164296bb4985 27 pc.baud(115200); // Baud rate used for communicating with Tera-term on PC
agaikwad 3:164296bb4985 28
agaikwad 3:164296bb4985 29 pc.printf("START\r\n"); // Starting point
agaikwad 3:164296bb4985 30
agaikwad 3:164296bb4985 31 esp_initialize();
SIT2016 1:2012c31aee1b 32
agaikwad 3:164296bb4985 33
agaikwad 3:164296bb4985 34
agaikwad 3:164296bb4985 35 while (1)
agaikwad 3:164296bb4985 36 { wait(15);
agaikwad 3:164296bb4985 37 pc.printf("test value is %f%f\n",i,j);
agaikwad 3:164296bb4985 38 esp_send();
agaikwad 3:164296bb4985 39 i++;
agaikwad 3:164296bb4985 40 j--;
SIT2016 1:2012c31aee1b 41
agaikwad 3:164296bb4985 42 }
SIT2016 2:817794b2f733 43 }
SIT2016 2:817794b2f733 44
agaikwad 3:164296bb4985 45
agaikwad 3:164296bb4985 46 void esp_initialize(void)
agaikwad 3:164296bb4985 47 {
agaikwad 3:164296bb4985 48 pc.printf("Initializing ESP\r\n");
agaikwad 3:164296bb4985 49
agaikwad 3:164296bb4985 50 pc.printf("Reset ESP\r\n");
agaikwad 3:164296bb4985 51 esp.Reset(); //RESET ESP
agaikwad 3:164296bb4985 52 esp.RcvReply(rcv, 400); //receive a response from ESP
agaikwad 3:164296bb4985 53 //pc.printf(rcv); //Print the response onscreen
agaikwad 3:164296bb4985 54 wait(2);
agaikwad 3:164296bb4985 55
agaikwad 3:164296bb4985 56 strcpy(snd,"AT");
agaikwad 3:164296bb4985 57 esp.SendCMD(snd);
agaikwad 3:164296bb4985 58 pc.printf(snd);
agaikwad 3:164296bb4985 59 //wait(2);
agaikwad 3:164296bb4985 60 esp.RcvReply(rcv, 400);
agaikwad 3:164296bb4985 61 pc.printf(rcv);
agaikwad 3:164296bb4985 62 wait(0.1);
agaikwad 3:164296bb4985 63
agaikwad 3:164296bb4985 64 strcpy(snd,"AT+CWMODE=1");
agaikwad 3:164296bb4985 65 esp.SendCMD(snd);
agaikwad 3:164296bb4985 66 pc.printf(snd);
agaikwad 3:164296bb4985 67 wait(2);
agaikwad 3:164296bb4985 68
agaikwad 3:164296bb4985 69 strcpy(snd,"AT+CWJAP=\"");
agaikwad 3:164296bb4985 70 strcat(snd,WIFI_SSID);
agaikwad 3:164296bb4985 71 strcat(snd,"\",\"");
agaikwad 3:164296bb4985 72 strcat(snd,WIFI_PASS);
agaikwad 3:164296bb4985 73 strcat(snd,"\"");
SIT2016 1:2012c31aee1b 74
agaikwad 3:164296bb4985 75 esp.SendCMD(snd);
agaikwad 3:164296bb4985 76 pc.printf(snd);
agaikwad 3:164296bb4985 77 wait(5);
agaikwad 3:164296bb4985 78 esp.RcvReply(rcv, 400);
agaikwad 3:164296bb4985 79 pc.printf("\n %s \n", rcv);
agaikwad 3:164296bb4985 80
agaikwad 3:164296bb4985 81 strcpy(snd,"AT+CIPMUX=0");
agaikwad 3:164296bb4985 82 esp.SendCMD(snd);
agaikwad 3:164296bb4985 83 pc.printf(snd);
agaikwad 3:164296bb4985 84 //wait(2);
agaikwad 3:164296bb4985 85 esp.RcvReply(rcv, 400);
agaikwad 3:164296bb4985 86 pc.printf("\n %s \n", rcv);
agaikwad 3:164296bb4985 87
agaikwad 3:164296bb4985 88 }
agaikwad 3:164296bb4985 89
agaikwad 3:164296bb4985 90
agaikwad 3:164296bb4985 91 void esp_send(void)
agaikwad 3:164296bb4985 92 {
agaikwad 3:164296bb4985 93
agaikwad 3:164296bb4985 94 //ESP updates the Status of Thingspeak channel//
agaikwad 3:164296bb4985 95
agaikwad 3:164296bb4985 96 strcpy(snd,"AT+CIPSTART=");
agaikwad 3:164296bb4985 97 strcat(snd,"\"TCP\",\"");
agaikwad 3:164296bb4985 98 strcat(snd,IP);
agaikwad 3:164296bb4985 99 strcat(snd,"\",80");
agaikwad 3:164296bb4985 100
agaikwad 3:164296bb4985 101 esp.SendCMD(snd);
agaikwad 3:164296bb4985 102 pc.printf("S\r\n%s",snd);
agaikwad 3:164296bb4985 103 //wait(2);
agaikwad 3:164296bb4985 104 esp.RcvReply(rcv, 1000);
agaikwad 3:164296bb4985 105 pc.printf("R\r\n%s",rcv);
SIT2016 1:2012c31aee1b 106 wait(1);
SIT2016 1:2012c31aee1b 107
rajas1812 5:ee26bce360d0 108 sprintf(snd,"GET https://api.thingspeak.com/update?key=XE2W5EIXWN6LA234&field1=%f&field2=%f\r\n",i,j);
agaikwad 3:164296bb4985 109
agaikwad 3:164296bb4985 110 int i=0;
agaikwad 3:164296bb4985 111 for(i=0;snd[i]!='\0';i++);
agaikwad 3:164296bb4985 112 i++;
agaikwad 3:164296bb4985 113 char cmd[255];
SIT2016 1:2012c31aee1b 114
agaikwad 3:164296bb4985 115 sprintf(cmd,"AT+CIPSEND=%d",i); //Send Number of open connection and Characters to send
agaikwad 3:164296bb4985 116 esp.SendCMD(cmd);
agaikwad 3:164296bb4985 117 pc.printf("S\r\n%s",cmd);
agaikwad 3:164296bb4985 118 while(i<=20 || rcv == ">")
agaikwad 3:164296bb4985 119 {
agaikwad 3:164296bb4985 120 esp.RcvReply(rcv, 1000);
agaikwad 3:164296bb4985 121 wait(100);
agaikwad 3:164296bb4985 122 i++;
agaikwad 3:164296bb4985 123 }
agaikwad 3:164296bb4985 124 pc.printf("R\r\n%s",rcv);
SIT2016 1:2012c31aee1b 125
agaikwad 3:164296bb4985 126 esp.SendCMD(snd); //Post value to thingspeak channel
agaikwad 3:164296bb4985 127 pc.printf("S\r\n%s",snd);
agaikwad 3:164296bb4985 128
agaikwad 3:164296bb4985 129 while(i<=20 || rcv == "OK")
agaikwad 3:164296bb4985 130 {
agaikwad 3:164296bb4985 131 esp.RcvReply(rcv, 1000);
agaikwad 3:164296bb4985 132 wait(100);
agaikwad 3:164296bb4985 133 i++;
agaikwad 3:164296bb4985 134 }
agaikwad 3:164296bb4985 135 pc.printf("R\r\n%s",rcv);
agaikwad 3:164296bb4985 136
SIT2016 1:2012c31aee1b 137 }