priyanka Siddalingappa / MQ7

Library for MQ7 gas sensor

Dependents:   Garage_Control

MQ7.cpp

Committer:
pkunnals
Date:
2021-03-19
Revision:
1:beae29b45281
Parent:
0:398854b7b855

File content as of revision 1:beae29b45281:

#include "MQ7.h"
#include "mbed.h"

MQ7::MQ7(PinName pinA, PinName pinD) : _pinA(pinA), _pinD(pinD) {

     
}
int MQ7::get_CO_value(){
    float a = _pinA.read_u16();
    printf("CO ADC Value = %f\r\n",a);
    if(a<20000){
        return 1;
    }else if(a> 20000 && a<26000){
        return 2;
    }else if(a>=26000 && a<49152){
        return 3;
    }else{
        return 3;
        }
            
}