Controlling Two LED's using Node-Red and ESp8266
Fork of thingspeak_LEDCONTROL by
main.cpp@4:a4fecf27c726, 2018-06-01 (annotated)
- Committer:
- animesh44
- Date:
- Fri Jun 01 07:32:09 2018 +0000
- Revision:
- 4:a4fecf27c726
- Parent:
- 3:1722a03793c6
Controlling Two LED's using Node-Red and ESP8266
Who changed what in which revision?
User | Revision | Line number | New 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); |
animesh44 | 4:a4fecf27c726 | 6 | DigitalOut gled(LED2); |
eduvanceIoT | 0:34d3f68b920e | 7 | |
eduvanceIoT | 0:34d3f68b920e | 8 | //wifi UART port and baud rate |
mrbhatter | 3:1722a03793c6 | 9 | ESP8266 wifi(PTE0, PTE1, 115200); // Class Variable Pin dexlaration for WIFI |
eduvanceIoT | 0:34d3f68b920e | 10 | |
eduvanceIoT | 0:34d3f68b920e | 11 | //buffers for wifi library |
mrbhatter | 3:1722a03793c6 | 12 | char snd[255],resp[9000]; |
eduvanceIoT | 0:34d3f68b920e | 13 | char http_cmd[300], comm[300]; |
mrbhatter | 3:1722a03793c6 | 14 | char url_response[9000]; |
eduvanceIoT | 0:34d3f68b920e | 15 | |
mrbhatter | 3:1722a03793c6 | 16 | int timeout = 5000; //timeout for wifi commands |
eduvanceIoT | 0:34d3f68b920e | 17 | |
mrbhatter | 3:1722a03793c6 | 18 | //SSID and password for connection |
animesh44 | 4:a4fecf27c726 | 19 | #define SSID "Redmi Lucifer" |
animesh44 | 4:a4fecf27c726 | 20 | #define PASS "bhulgaya" |
mrbhatter | 3:1722a03793c6 | 21 | void control_led(void); |
eduvanceIoT | 0:34d3f68b920e | 22 | //Remote IP |
animesh44 | 4:a4fecf27c726 | 23 | #define IP "192.168.43.73" // IP for thingspeak server. Remains same for al codes using thingspeak |
mrbhatter | 3:1722a03793c6 | 24 | //#define IP "192.168.0.25" |
mrbhatter | 3:1722a03793c6 | 25 | //waterlevelue global variable |
mrbhatter | 3:1722a03793c6 | 26 | int ledstatus=0; |
animesh44 | 4:a4fecf27c726 | 27 | int ledstatus1=0; |
SIT2016 | 1:8ab009672555 | 28 | |
mrbhatter | 3:1722a03793c6 | 29 | //Public and private keys for phant |
animesh44 | 4:a4fecf27c726 | 30 | //char* Update_Key = "QRCE7DOPVY3I49YN"; // Copy the read key for your channel and paste it here. |
mrbhatter | 3:1722a03793c6 | 31 | //char* Private_Key = "GPoWnRM60yidrB0e1pXD"; |
mrbhatter | 3:1722a03793c6 | 32 | |
mrbhatter | 3:1722a03793c6 | 33 | //Wifi init function. Sets the module to connect to wifi accesspoint with ssid and password mentioned above |
mrbhatter | 3:1722a03793c6 | 34 | void wifi_initialize(void){ |
mrbhatter | 3:1722a03793c6 | 35 | |
eduvanceIoT | 0:34d3f68b920e | 36 | pc.printf("******** Resetting wifi module ********\r\n"); |
eduvanceIoT | 0:34d3f68b920e | 37 | wifi.Reset(); |
mrbhatter | 3:1722a03793c6 | 38 | |
eduvanceIoT | 0:34d3f68b920e | 39 | //wait for 5 seconds for response, else display no response receiveed |
mrbhatter | 3:1722a03793c6 | 40 | if (wifi.RcvReply(resp, 5000)) |
mrbhatter | 3:1722a03793c6 | 41 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 42 | else |
eduvanceIoT | 0:34d3f68b920e | 43 | pc.printf("No response"); |
mrbhatter | 3:1722a03793c6 | 44 | |
eduvanceIoT | 0:34d3f68b920e | 45 | pc.printf("******** Setting Station mode of wifi with AP ********\r\n"); |
eduvanceIoT | 0:34d3f68b920e | 46 | wifi.SetMode(1); // set transparent mode |
eduvanceIoT | 0:34d3f68b920e | 47 | if (wifi.RcvReply(resp, timeout)) //receive a response from ESP |
eduvanceIoT | 0:34d3f68b920e | 48 | pc.printf("%s",resp); //Print the response onscreen |
eduvanceIoT | 0:34d3f68b920e | 49 | else |
eduvanceIoT | 0:34d3f68b920e | 50 | pc.printf("No response while setting mode. \r\n"); |
mrbhatter | 3:1722a03793c6 | 51 | |
eduvanceIoT | 0:34d3f68b920e | 52 | pc.printf("******** Joining network with SSID and PASS ********\r\n"); |
mrbhatter | 3:1722a03793c6 | 53 | wifi.Join(SSID, PASS); |
mrbhatter | 3:1722a03793c6 | 54 | if (wifi.RcvReply(resp, timeout)) |
mrbhatter | 3:1722a03793c6 | 55 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 56 | else |
eduvanceIoT | 0:34d3f68b920e | 57 | pc.printf("No response while connecting to network \r\n"); |
mrbhatter | 3:1722a03793c6 | 58 | |
eduvanceIoT | 0:34d3f68b920e | 59 | pc.printf("******** Getting IP and MAC of module ********\r\n"); |
mrbhatter | 3:1722a03793c6 | 60 | wifi.GetIP(resp); |
mrbhatter | 3:1722a03793c6 | 61 | if (wifi.RcvReply(resp, timeout)) |
mrbhatter | 3:1722a03793c6 | 62 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 63 | else |
eduvanceIoT | 0:34d3f68b920e | 64 | pc.printf("No response while getting IP \r\n"); |
mrbhatter | 3:1722a03793c6 | 65 | |
eduvanceIoT | 0:34d3f68b920e | 66 | pc.printf("******** Setting WIFI UART passthrough ********\r\n"); |
mrbhatter | 3:1722a03793c6 | 67 | wifi.setTransparent(); |
mrbhatter | 3:1722a03793c6 | 68 | if (wifi.RcvReply(resp, timeout)) |
mrbhatter | 3:1722a03793c6 | 69 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 70 | else |
eduvanceIoT | 0:34d3f68b920e | 71 | pc.printf("No response while setting wifi passthrough. \r\n"); |
mrbhatter | 3:1722a03793c6 | 72 | wait(1); |
mrbhatter | 3:1722a03793c6 | 73 | |
eduvanceIoT | 0:34d3f68b920e | 74 | pc.printf("******** Setting single connection mode ********\r\n"); |
mrbhatter | 3:1722a03793c6 | 75 | wifi.SetSingle(); |
eduvanceIoT | 0:34d3f68b920e | 76 | wifi.RcvReply(resp, timeout); |
mrbhatter | 3:1722a03793c6 | 77 | if (wifi.RcvReply(resp, timeout)) |
mrbhatter | 3:1722a03793c6 | 78 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 79 | else |
eduvanceIoT | 0:34d3f68b920e | 80 | pc.printf("No response while setting single connection \r\n"); |
eduvanceIoT | 0:34d3f68b920e | 81 | wait(1); |
eduvanceIoT | 0:34d3f68b920e | 82 | } |
eduvanceIoT | 0:34d3f68b920e | 83 | |
mrbhatter | 3:1722a03793c6 | 84 | void wifi_send(void){ |
mrbhatter | 3:1722a03793c6 | 85 | |
eduvanceIoT | 0:34d3f68b920e | 86 | pc.printf("******** Starting TCP connection on IP and port ********\r\n"); |
animesh44 | 4:a4fecf27c726 | 87 | wifi.startTCPConn(IP,1880); //cipstart |
eduvanceIoT | 0:34d3f68b920e | 88 | wifi.RcvReply(resp, timeout); |
mrbhatter | 3:1722a03793c6 | 89 | if (wifi.RcvReply(resp, timeout)) |
mrbhatter | 3:1722a03793c6 | 90 | pc.printf("%s",resp); |
eduvanceIoT | 0:34d3f68b920e | 91 | else |
eduvanceIoT | 0:34d3f68b920e | 92 | pc.printf("No response while starting TCP connection \r\n"); |
eduvanceIoT | 0:34d3f68b920e | 93 | wait(1); |
mrbhatter | 3:1722a03793c6 | 94 | |
mrbhatter | 3:1722a03793c6 | 95 | //create link |
animesh44 | 4:a4fecf27c726 | 96 | sprintf(http_cmd,"/status?"); // Forms the url for transmitting to thingspeak server. the format can be seen on thingspeak site as well |
eduvanceIoT | 0:34d3f68b920e | 97 | pc.printf(http_cmd); |
mrbhatter | 3:1722a03793c6 | 98 | |
eduvanceIoT | 0:34d3f68b920e | 99 | pc.printf("******** Sending URL to wifi ********\r\n"); |
eduvanceIoT | 0:34d3f68b920e | 100 | wifi.sendURL(http_cmd, comm); //cipsend and get command |
mrbhatter | 3:1722a03793c6 | 101 | if (wifi.RcvReply(resp, timeout)){ |
mrbhatter | 3:1722a03793c6 | 102 | pc.printf("--------------------------Request Response -------------------------------------------\r\n"); |
mrbhatter | 2:97dbf542ebee | 103 | pc.printf("%s",resp); |
mrbhatter | 3:1722a03793c6 | 104 | pc.printf("--------------------------Request Response -------------------------------------------\r\n"); |
mrbhatter | 3:1722a03793c6 | 105 | control_led(); |
mrbhatter | 3:1722a03793c6 | 106 | } |
SIT2016 | 1:8ab009672555 | 107 | else |
SIT2016 | 1:8ab009672555 | 108 | pc.printf("No response while sending URL \r\n"); |
mrbhatter | 3:1722a03793c6 | 109 | |
mrbhatter | 3:1722a03793c6 | 110 | //wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server |
mrbhatter | 3:1722a03793c6 | 111 | //wifi.RcvReply(resp, timeout); |
mrbhatter | 3:1722a03793c6 | 112 | //pc.printf("%s", resp); |
eduvanceIoT | 0:34d3f68b920e | 113 | } |
eduvanceIoT | 0:34d3f68b920e | 114 | |
mrbhatter | 3:1722a03793c6 | 115 | void control_led(void) |
mrbhatter | 2:97dbf542ebee | 116 | { |
mrbhatter | 3:1722a03793c6 | 117 | int length=strlen(resp); |
mrbhatter | 3:1722a03793c6 | 118 | pc.printf("Length of response: %d\r\n",strlen(resp)); |
animesh44 | 4:a4fecf27c726 | 119 | ledstatus=int(resp[length-26]); |
animesh44 | 4:a4fecf27c726 | 120 | ledstatus1=int(resp[length-13]); |
animesh44 | 4:a4fecf27c726 | 121 | pc.printf("%s",resp); |
animesh44 | 4:a4fecf27c726 | 122 | pc.printf("LED Status is %c\r\n",resp[length-26]); |
animesh44 | 4:a4fecf27c726 | 123 | pc.printf("LED2 Status is %c\r\n",resp[length-13]); |
mrbhatter | 3:1722a03793c6 | 124 | pc.printf("LED status is %d\r\n",ledstatus); |
animesh44 | 4:a4fecf27c726 | 125 | pc.printf("LED2 status is %d\r\n",ledstatus1); |
animesh44 | 4:a4fecf27c726 | 126 | if(resp[length-26]==116 && resp[length-13]==97){ |
mrbhatter | 3:1722a03793c6 | 127 | pc.printf("LED ON"); |
mrbhatter | 3:1722a03793c6 | 128 | rled=0; |
animesh44 | 4:a4fecf27c726 | 129 | gled=1; |
mrbhatter | 3:1722a03793c6 | 130 | } |
animesh44 | 4:a4fecf27c726 | 131 | else if(resp[length-26]==102 && resp[length-13]==116){ |
mrbhatter | 3:1722a03793c6 | 132 | pc.printf("LED OFF"); |
animesh44 | 4:a4fecf27c726 | 133 | gled=0; |
mrbhatter | 3:1722a03793c6 | 134 | rled=1; |
mrbhatter | 3:1722a03793c6 | 135 | } |
mrbhatter | 3:1722a03793c6 | 136 | } |
mrbhatter | 3:1722a03793c6 | 137 | |
mrbhatter | 3:1722a03793c6 | 138 | |
mrbhatter | 3:1722a03793c6 | 139 | int main () { |
mrbhatter | 3:1722a03793c6 | 140 | |
mrbhatter | 3:1722a03793c6 | 141 | |
mrbhatter | 3:1722a03793c6 | 142 | wifi_initialize(); // Calls function defined above to initialize the wifi module |
mrbhatter | 3:1722a03793c6 | 143 | |
mrbhatter | 3:1722a03793c6 | 144 | while (1) { |
mrbhatter | 3:1722a03793c6 | 145 | wifi_send(); // Calls function defined above to send data to thingspeak |
mrbhatter | 3:1722a03793c6 | 146 | //wait(5); |
eduvanceIoT | 0:34d3f68b920e | 147 | } |
eduvanceIoT | 0:34d3f68b920e | 148 | } |