![](/media/cache/profiles/d68e30601ca27cf28d9e143af9fdc7e2.jpg.50x50_q85.jpg)
The project is about embedding temperature sensor, a PIR sensor and a thermocouple with RFID as a security measure and sending the data to ThingSpeak Cloud with a WiFi module ESP8266
Dependencies: DHT ESP8266 MFRC522
main.cpp
- Committer:
- architmuchhal
- Date:
- 2017-03-28
- Revision:
- 0:94f21066fc43
File content as of revision 0:94f21066fc43:
#include "mbed.h" #include "MFRC522.h" #include "DHT.h" #include "ESP8266.h" // Include header file #include "math.h" #include <string> #define APIKEY D9BGPWTNAGUAZPMB //Put "Write key" of your channel in thingspeak.com #define IP "184.106.153.149" // IP Address of "api.thingspeak.com\" #define WIFI_SSID "Archit" #define WIFI_PASS "archit12" ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi // FRDM-K64F (Freescale) Pin for MFRC522 reset #define MF_RESET PTB19 // Defining the serial ports for PC and Bluetooth #define SERIAL_1 AnalogIn check(PTB3); //thermocouple Analog input Serial pc(USBTX, USBRX); DHT sensor(PTC2,DHT22); //DHT Sensor DigitalOut LedGreen(LED2), LedRed(LED1); DigitalIn inputPin(PTB13); // pir senor input int val=1; float tmp_f, tmp_c, hum; Timer timeBetweenCards; char tagname; uint8_t user[10]; char Richard[17]="A6027B026802A102"; char tempo[17]; char snd[255],rcv[1000],snd_Data[255]; float x=0; //MFRC522 RfChip (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET); MFRC522 RfChip (PTC6, PTC7, PTC5, PTC3, PTB19); void esp_initialize(void); void esp_send(void); int main(void) { pc.baud(115200); esp_initialize(); LedRed= 0; // Initialising RC522 Chip RfChip.PCD_Init(); while (true) { if(inputPin==1) { printf("Motion Detected!\r\n"); printf("************************************************\r\n"); printf("You have approached Omnisite Monitioring Solutions!\r\n"); printf("------------------------------------------------------------\r\n"); printf("Place Your ID to get access:\r\n"); printf("------------------------------------------------------------\r\n"); wait(2); tagname = '\0'; LedRed= 1; LedGreen = 1; // checking for new cards if ( ! RfChip.PICC_IsNewCardPresent()) { wait_ms(100); continue; } // Selecting one of the cards or key chains if ( ! RfChip.PICC_ReadCardSerial()) { wait_ms(1000); continue; } // When a card is detected, a Green Led flashes! timeBetweenCards.start(); LedGreen = 0; for (uint8_t i = 0; i < RfChip.uid.size; i++) { user[i]=RfChip.uid.uidByte[i]; } sprintf(tempo,"%X02%X02%X02%X02",user[0],user[1],user[2],user[3]); printf("\n\r"); if (strcmp(tempo, Richard)==0) { //Thermocouple program pc.printf("Thermocouple Output:\r\n"); x=0; x= check.read_u16(); x=x/65536; // ADC Scaling x=x*330; // GPIO Scaling and IC Scaling(*100) pc.printf("Voltage Difference = %.2f C\n\r",x); wait(3); //DHT int err; printf("\r\nDHT Test program"); printf("\r\n******************\r\n"); err = sensor.readData(); if (err == 0) { printf("Temperature is %4.2f C \r\n",sensor.ReadTemperature(CELCIUS)); printf("Temperature is %4.2f F \r\n",sensor.ReadTemperature(FARENHEIT)); printf("Temperature is %4.2f K \r\n",sensor.ReadTemperature(KELVIN)); printf("Humidity is %4.2f \r\n",sensor.ReadHumidity()); printf("Dew point is %4.2f \r\n",sensor.CalcdewPoint(sensor.ReadTemperature(CELCIUS), sensor.ReadHumidity())); printf("Dew point (fast) is %4.2f \r\n",sensor.CalcdewPointFast(sensor.ReadTemperature(CELCIUS), sensor.ReadHumidity())); printf("--------------------------------------------\r\n"); } wait(2); tmp_f = sensor.ReadTemperature(FARENHEIT); tmp_c = sensor.ReadTemperature(CELCIUS); hum = sensor.ReadHumidity(); esp_send(); } else if (strcmp(tempo, Richard)!=0) { printf("NOT AUTHORISED\n\r"); } } else if(inputPin==0) { } wait(5); } } void esp_initialize(void) { pc.printf("Initializing ESP\r\n"); pc.printf("Reset ESP\r\n"); esp.Reset(); //RESET ESP esp.RcvReply(rcv, 400); //receive a response from ESP wait(2); strcpy(snd,"AT"); esp.SendCMD(snd); pc.printf(snd); esp.RcvReply(rcv, 400); pc.printf(rcv); wait(0.1); strcpy(snd,"AT+CWMODE=1"); esp.SendCMD(snd); pc.printf(snd); wait(2); strcpy(snd,"AT+CWJAP=\""); strcat(snd,WIFI_SSID); strcat(snd,"\",\""); strcat(snd,WIFI_PASS); strcat(snd,"\""); esp.SendCMD(snd); pc.printf(snd); wait(5); esp.RcvReply(rcv, 400); pc.printf("\n %s \n", rcv); strcpy(snd,"AT+CIPMUX=1"); esp.SendCMD(snd); pc.printf(snd); esp.RcvReply(rcv, 400); pc.printf("\n %s \n", rcv); } void esp_send(void) { //ESP updates the Status of Thingspeak channel// strcpy(snd,"AT+CIPSTART="); strcat(snd,"\"TCP\",\""); strcat(snd,IP); strcat(snd,"\",80"); esp.SendCMD(snd); pc.printf("Send\r\n%s",snd); esp.RcvReply(rcv, 1000); pc.printf("Receive\r\n%s",rcv); wait(1); sprintf(snd,"GET https://api.thingspeak.com/update?api_key=D9BGPWTNAGUAZPMB&field1=%f&field2=%f&field3=%f&field4=%.2f\r\n",tmp_f,tmp_c,hum,x); int i=0; for(i=0; snd[i]!='\0'; i++); i++; char cmd[255]; sprintf(cmd,"AT+CIPSEND=%d",i); //Send Number of open connection and Characters to send esp.SendCMD(cmd); pc.printf("Send\r\n%s",cmd); while(i<=20 || rcv == ">") { esp.RcvReply(rcv, 1000); wait(100); i++; } pc.printf("Receive\r\n%s",rcv); esp.SendCMD(snd); //Post value to thingspeak channel pc.printf("Send\r\n%s",snd); while(i<=20 || rcv == "OK") { esp.RcvReply(rcv, 1000); wait(100); i++; } pc.printf("Receive\r\n%s",rcv); }