![](/media/cache/group/FB.png.50x50_q85.png)
LED COontrol Using Thingspeak
Fork of ESP8266-FRDM-KL25Z-THINGSPEAK by
main.cpp
- Committer:
- SIT2016
- Date:
- 2017-06-17
- Revision:
- 1:8ab009672555
- Parent:
- 0:34d3f68b920e
- Child:
- 2:97dbf542ebee
File content as of revision 1:8ab009672555:
#include "mbed.h" #include "ESP8266.h" Serial pc(USBTX,USBRX); //POT sensor AnalogIn pot(PTB0); //wifi UART port and baud rate ESP8266 wifi(PTE0, PTE1, 115200); //buffers for wifi library char resp[1000]; char http_cmd[300], comm[300]; int timeout = 8000; //timeout for wifi commands //SSID and password for connection #define SSID "Eduvance" #define PASS "eduvance123" //Remote IP #define IP "184.106.153.149" //global variable float potvalue = 0; //Update key for thingspeak char* Update_Key = "O1VOWGC3WXI981H6"; //Wifi init function void wifi_initialize(void){ pc.printf("******** Resetting wifi module ********\r\n"); wifi.Reset(); //wait for 5 seconds for response, else display no response receiveed if (wifi.RcvReply(resp, 5000)) pc.printf("%s",resp); else pc.printf("No response"); pc.printf("******** Setting Station mode of wifi with AP ********\r\n"); wifi.SetMode(1); // set transparent mode if (wifi.RcvReply(resp, timeout)) //receive a response from ESP pc.printf("%s",resp); //Print the response onscreen else pc.printf("No response while setting mode. \r\n"); pc.printf("******** Joining network with SSID and PASS ********\r\n"); wifi.Join(SSID, PASS); if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while connecting to network \r\n"); pc.printf("******** Getting IP and MAC of module ********\r\n"); wifi.GetIP(resp); if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while getting IP \r\n"); pc.printf("******** Setting WIFI UART passthrough ********\r\n"); wifi.setTransparent(); if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while setting wifi passthrough. \r\n"); wait(1); pc.printf("******** Setting single connection mode ********\r\n"); wifi.SetSingle(); wifi.RcvReply(resp, timeout); if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while setting single connection \r\n"); wait(1); } void wifi_send(void){ pc.printf("******** Starting TCP connection on IP and port ********\r\n"); wifi.startTCPConn(IP,80); //cipstart wifi.RcvReply(resp, timeout); if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while starting TCP connection \r\n"); wait(1); //create link sprintf(http_cmd,"/update?api_key=%s&field1=%f",Update_Key,potvalue); pc.printf(http_cmd); pc.printf("******** Sending URL to wifi ********\r\n"); wifi.sendURL(http_cmd, comm); //cipsend and get command if (wifi.RcvReply(resp, timeout)) pc.printf("%s",resp); else pc.printf("No response while sending URL \r\n"); } int main () { wifi_initialize(); while (1) { potvalue = 255*pot.read(); pc.printf("Current potvalue is = %.3f \r\n", potvalue); wifi_send(); wait(30); } }