Dhiraj Matlani / Mbed OS RFIDplusHCSR04

This specific code runs for ultrasonic sensor and gives high alert if there is motion beyond 20cm. Additionally if we use RFID tag ultrasonic sensor stops functioning and gives authorized access to make motion.

Dependencies:   MFRC522

main.cpp

Committer:
VPKD1669
Date:
2019-12-16
Revision:
0:c7eacabfa681

File content as of revision 0:c7eacabfa681:

/* mbed Microcontroller Library
 * Copyright (c) 2019 ARM Limited
 * SPDX-License-Identifier: Apache-2.0
 */

#include "mbed.h"
//#include "platform/mbed_thread.h"
#include "hcsr04.h"

DigitalOut myled(LED1);
Serial pc(USBTX,USBRX);
HCSR04  usensor(D8, D9);
unsigned int dist;
DigitalOut GREEN(D7); 
DigitalOut BLUE(LED3);  
Timer dt;


#include "MFRC522.h" 
// FRDM-K64F (Freescale) Pin for MFRC522 reset 
#define MF_RESET    PTD0 
#define SERIAL_1

DigitalOut LedGreen(LED2); 

//Serial connection to PC for output 
//Serial pc(PTC17, PTC16); // serial comm on the FRDM board

//wireless bluetooth connection to Android Device for output
Serial blue(PTC15, PTC14);   

 
//MFRC522    RfChip   (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET); 
MFRC522    RfChip   (PTD2, PTD3, PTD1, PTE25, PTD0); 
 
int counter1 = 0;
int counter2 = 0; 
 


// Blinking rate in milliseconds
//#define BLINKING_RATE_MS 500


int main()
{
    // Initialise the digital pin LED1 as an output
    DigitalOut led(LED1);

    /*while (true) {
        led = !led;
        //thread_sleep_for(BLINKING_RATE_MS);
    }*/
    BLUE=1;
    pc.baud(9600);
    dt.start(); 
    while(1) {
        usensor.start();
        wait_ms(500); 
        dist=usensor.get_dist_cm();
        pc.printf("\n\r cm:%ld",dist);
        
            printf("Welcome to RFID Tag Reader Using FRDM K64F...\n\r");
   blue.printf("Welcome to RFID Tag Reader Uing FRDM K64F...\n\r");
   printf("Bluetooth Enable\r\n");
   blue.printf("Bluetooth Enable\r\n");
   RfChip.PCD_Init(); 
 
    
     LedGreen = 1; 
 
     // Look for new cards 
     if ( ! RfChip.PICC_IsNewCardPresent()) 
     { 
       if (dist>20)
        {
         GREEN = !GREEN;
        }
        else
        {
            BLUE=0;
            continue;
        } 
     } 
 
     // Select one of the cards 
     if ( ! RfChip.PICC_ReadCardSerial()) 
     { 
       if (dist>20)
        {
         GREEN = !GREEN;
        }
        else
        {
            BLUE=0;
            continue;
        } 
     } 
      LedGreen = 0;
      int a=0; 
 
     // Print Card UID 
     printf("Card UID:"); 
     blue.printf("Card UID:");
     for (uint8_t i = 0; i < RfChip.uid.size; i++) 
     { 
      printf(" %X02 ", RfChip.uid.uidByte[i]);
      blue.printf(" %X02 ", RfChip.uid.uidByte[i]);
      a = RfChip.uid.uidByte[0];
     }  
     printf("%d",a);
     
     //Print Card Type
    if(a==73)
    { 
    if(counter1 == 0){
         printf("\r\nMilk is in the fridge");
         blue.printf("\r\nWhite Card");
         counter1 = 1;
     }
     else if(counter1 == 1){
         printf("\r\nMilk is out of the fridge");
         counter1 = 0;
         }
     }
    
     if(a==207)
     {
    if (counter2 == 0)
    {
    printf("\r\nBeer is in the fridge");
    blue.printf("\r\nBlue Keychain");
    counter2 = 1;
    }
    else if (counter2 == 1){
    printf("\r\nBeer is out of the fridge");
    counter2 = 0;
    }
    }
    //wait(1);
     printf("\n\r"); 
     blue.printf("\n\r"); 
   
         printf("\r\nParcel taken");
         blue.printf("\r\nParcel taken");
        
     printf("\n\r"); 
     blue.printf("\n\r"); 
     
     // Print RFID Card type 
     uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak); 
     printf("PICC Type: %s \n\n\r\r", RfChip.PICC_GetTypeName(piccType));
     blue.printf("PICC Type: %s \n\n\r\r", RfChip.PICC_GetTypeName(piccType));  
   break;
   }
     
      blue.baud(9600);
   pc.baud(9600);
    }