Pratit Nayak / Mbed 2 deprecated node_red_DL

wsedfyuji

Dependencies:   ESP8266 mbed

Fork of thingspeak_LEDCONTROL by Karkhana Makerspace

main.cpp@3:1722a03793c6, 2018-05-22 (annotated)

Committer:
mrbhatter
Date:
Tue May 22 05:02:54 2018 +0000
Revision:
3:1722a03793c6
Parent:
2:97dbf542ebee
Child:
4:a8e100b532ee
FRDM Thingspeak data and LED Control;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eduvanceIoT 0:34d3f68b920e 1 #include "mbed.h"
eduvanceIoT 0:34d3f68b920e 2 #include "ESP8266.h"
mrbhatter 3:1722a03793c6 3
eduvanceIoT 0:34d3f68b920e 4 Serial pc(USBTX,USBRX);
mrbhatter 3:1722a03793c6 5 DigitalOut rled(LED1);
eduvanceIoT 0:34d3f68b920e 6
eduvanceIoT 0:34d3f68b920e 7 //wifi UART port and baud rate
mrbhatter 3:1722a03793c6 8 ESP8266 wifi(PTE0, PTE1, 115200); // Class Variable Pin dexlaration for WIFI
eduvanceIoT 0:34d3f68b920e 9
eduvanceIoT 0:34d3f68b920e 10 //buffers for wifi library
mrbhatter 3:1722a03793c6 11 char snd[255],resp[9000];
eduvanceIoT 0:34d3f68b920e 12 char http_cmd[300], comm[300];
mrbhatter 3:1722a03793c6 13 char url_response[9000];
eduvanceIoT 0:34d3f68b920e 14
mrbhatter 3:1722a03793c6 15 int timeout = 5000; //timeout for wifi commands
eduvanceIoT 0:34d3f68b920e 16
mrbhatter 3:1722a03793c6 17 //SSID and password for connection
mrbhatter 3:1722a03793c6 18 #define SSID "Karkhana"
mrbhatter 3:1722a03793c6 19 #define PASS "Karkhana2018"
mrbhatter 3:1722a03793c6 20 void control_led(void);
eduvanceIoT 0:34d3f68b920e 21 //Remote IP
mrbhatter 3:1722a03793c6 22 #define IP "184.106.153.149" // IP for thingspeak server. Remains same for al codes using thingspeak
mrbhatter 3:1722a03793c6 23 //#define IP "192.168.0.25"
mrbhatter 3:1722a03793c6 24 //waterlevelue global variable
mrbhatter 3:1722a03793c6 25 int ledstatus=0;
SIT2016 1:8ab009672555 26
mrbhatter 3:1722a03793c6 27 //Public and private keys for phant
mrbhatter 3:1722a03793c6 28 char* Update_Key = "QRCE7DOPVY3I49YN"; // Copy the read key for your channel and paste it here.
mrbhatter 3:1722a03793c6 29 //char* Private_Key = "GPoWnRM60yidrB0e1pXD";
mrbhatter 3:1722a03793c6 30
mrbhatter 3:1722a03793c6 31 //Wifi init function. Sets the module to connect to wifi accesspoint with ssid and password mentioned above
mrbhatter 3:1722a03793c6 32 void wifi_initialize(void){
mrbhatter 3:1722a03793c6 33
eduvanceIoT 0:34d3f68b920e 34 pc.printf("******** Resetting wifi module ********\r\n");
eduvanceIoT 0:34d3f68b920e 35 wifi.Reset();
mrbhatter 3:1722a03793c6 36
eduvanceIoT 0:34d3f68b920e 37 //wait for 5 seconds for response, else display no response receiveed
mrbhatter 3:1722a03793c6 38 if (wifi.RcvReply(resp, 5000))
mrbhatter 3:1722a03793c6 39 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 40 else
eduvanceIoT 0:34d3f68b920e 41 pc.printf("No response");
mrbhatter 3:1722a03793c6 42
eduvanceIoT 0:34d3f68b920e 43 pc.printf("******** Setting Station mode of wifi with AP ********\r\n");
eduvanceIoT 0:34d3f68b920e 44 wifi.SetMode(1); // set transparent mode
eduvanceIoT 0:34d3f68b920e 45 if (wifi.RcvReply(resp, timeout)) //receive a response from ESP
eduvanceIoT 0:34d3f68b920e 46 pc.printf("%s",resp); //Print the response onscreen
eduvanceIoT 0:34d3f68b920e 47 else
eduvanceIoT 0:34d3f68b920e 48 pc.printf("No response while setting mode. \r\n");
mrbhatter 3:1722a03793c6 49
eduvanceIoT 0:34d3f68b920e 50 pc.printf("******** Joining network with SSID and PASS ********\r\n");
mrbhatter 3:1722a03793c6 51 wifi.Join(SSID, PASS);
mrbhatter 3:1722a03793c6 52 if (wifi.RcvReply(resp, timeout))
mrbhatter 3:1722a03793c6 53 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 54 else
eduvanceIoT 0:34d3f68b920e 55 pc.printf("No response while connecting to network \r\n");
mrbhatter 3:1722a03793c6 56
eduvanceIoT 0:34d3f68b920e 57 pc.printf("******** Getting IP and MAC of module ********\r\n");
mrbhatter 3:1722a03793c6 58 wifi.GetIP(resp);
mrbhatter 3:1722a03793c6 59 if (wifi.RcvReply(resp, timeout))
mrbhatter 3:1722a03793c6 60 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 61 else
eduvanceIoT 0:34d3f68b920e 62 pc.printf("No response while getting IP \r\n");
mrbhatter 3:1722a03793c6 63
eduvanceIoT 0:34d3f68b920e 64 pc.printf("******** Setting WIFI UART passthrough ********\r\n");
mrbhatter 3:1722a03793c6 65 wifi.setTransparent();
mrbhatter 3:1722a03793c6 66 if (wifi.RcvReply(resp, timeout))
mrbhatter 3:1722a03793c6 67 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 68 else
eduvanceIoT 0:34d3f68b920e 69 pc.printf("No response while setting wifi passthrough. \r\n");
mrbhatter 3:1722a03793c6 70 wait(1);
mrbhatter 3:1722a03793c6 71
eduvanceIoT 0:34d3f68b920e 72 pc.printf("******** Setting single connection mode ********\r\n");
mrbhatter 3:1722a03793c6 73 wifi.SetSingle();
eduvanceIoT 0:34d3f68b920e 74 wifi.RcvReply(resp, timeout);
mrbhatter 3:1722a03793c6 75 if (wifi.RcvReply(resp, timeout))
mrbhatter 3:1722a03793c6 76 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 77 else
eduvanceIoT 0:34d3f68b920e 78 pc.printf("No response while setting single connection \r\n");
eduvanceIoT 0:34d3f68b920e 79 wait(1);
eduvanceIoT 0:34d3f68b920e 80 }
eduvanceIoT 0:34d3f68b920e 81
mrbhatter 3:1722a03793c6 82 void wifi_send(void){
mrbhatter 3:1722a03793c6 83
eduvanceIoT 0:34d3f68b920e 84 pc.printf("******** Starting TCP connection on IP and port ********\r\n");
eduvanceIoT 0:34d3f68b920e 85 wifi.startTCPConn(IP,80); //cipstart
eduvanceIoT 0:34d3f68b920e 86 wifi.RcvReply(resp, timeout);
mrbhatter 3:1722a03793c6 87 if (wifi.RcvReply(resp, timeout))
mrbhatter 3:1722a03793c6 88 pc.printf("%s",resp);
eduvanceIoT 0:34d3f68b920e 89 else
eduvanceIoT 0:34d3f68b920e 90 pc.printf("No response while starting TCP connection \r\n");
eduvanceIoT 0:34d3f68b920e 91 wait(1);
mrbhatter 3:1722a03793c6 92
mrbhatter 3:1722a03793c6 93 //create link
mrbhatter 3:1722a03793c6 94 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
eduvanceIoT 0:34d3f68b920e 95 pc.printf(http_cmd);
mrbhatter 3:1722a03793c6 96
eduvanceIoT 0:34d3f68b920e 97 pc.printf("******** Sending URL to wifi ********\r\n");
eduvanceIoT 0:34d3f68b920e 98 wifi.sendURL(http_cmd, comm); //cipsend and get command
mrbhatter 3:1722a03793c6 99 if (wifi.RcvReply(resp, timeout)){
mrbhatter 3:1722a03793c6 100 pc.printf("--------------------------Request Response -------------------------------------------\r\n");
mrbhatter 2:97dbf542ebee 101 pc.printf("%s",resp);
mrbhatter 3:1722a03793c6 102 pc.printf("--------------------------Request Response -------------------------------------------\r\n");
mrbhatter 3:1722a03793c6 103 control_led();
mrbhatter 3:1722a03793c6 104 }
SIT2016 1:8ab009672555 105 else
SIT2016 1:8ab009672555 106 pc.printf("No response while sending URL \r\n");
mrbhatter 3:1722a03793c6 107
mrbhatter 3:1722a03793c6 108 //wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server
mrbhatter 3:1722a03793c6 109 //wifi.RcvReply(resp, timeout);
mrbhatter 3:1722a03793c6 110 //pc.printf("%s", resp);
eduvanceIoT 0:34d3f68b920e 111 }
eduvanceIoT 0:34d3f68b920e 112
mrbhatter 3:1722a03793c6 113 void control_led(void)
mrbhatter 2:97dbf542ebee 114 {
mrbhatter 3:1722a03793c6 115 int length=strlen(resp);
mrbhatter 3:1722a03793c6 116 pc.printf("Length of response: %d\r\n",strlen(resp));
mrbhatter 3:1722a03793c6 117 ledstatus=int(resp[length-13]);
mrbhatter 3:1722a03793c6 118 pc.printf("LED Status is %c\r\n",resp[length-13]);
mrbhatter 3:1722a03793c6 119 pc.printf("LED status is %d\r\n",ledstatus);
mrbhatter 3:1722a03793c6 120 if(resp[length-13]==49){
mrbhatter 3:1722a03793c6 121 pc.printf("LED ON");
mrbhatter 3:1722a03793c6 122 rled=0;
mrbhatter 3:1722a03793c6 123 }
mrbhatter 3:1722a03793c6 124 else{
mrbhatter 3:1722a03793c6 125 pc.printf("LED OFF");
mrbhatter 3:1722a03793c6 126 rled=1;
mrbhatter 3:1722a03793c6 127 }
mrbhatter 3:1722a03793c6 128 }
mrbhatter 3:1722a03793c6 129
mrbhatter 3:1722a03793c6 130
mrbhatter 3:1722a03793c6 131 int main () {
mrbhatter 3:1722a03793c6 132
mrbhatter 3:1722a03793c6 133
mrbhatter 3:1722a03793c6 134 wifi_initialize(); // Calls function defined above to initialize the wifi module
mrbhatter 3:1722a03793c6 135
mrbhatter 3:1722a03793c6 136 while (1) {
mrbhatter 3:1722a03793c6 137 wifi_send(); // Calls function defined above to send data to thingspeak
mrbhatter 3:1722a03793c6 138 //wait(5);
eduvanceIoT 0:34d3f68b920e 139 }
eduvanceIoT 0:34d3f68b920e 140 }