priyanka Siddalingappa / MQ7

Library for MQ7 gas sensor

Dependents:   Garage_Control

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Show/hide line numbers MQ7.cpp Source File

MQ7.cpp

00001 #include "MQ7.h"
00002 #include "mbed.h"
00003 
00004 MQ7::MQ7(PinName pinA, PinName pinD) : _pinA(pinA), _pinD(pinD) {
00005 
00006      
00007 }
00008 int MQ7::get_CO_value(){
00009     float a = _pinA.read_u16();
00010     printf("CO ADC Value = %f\r\n",a);
00011     if(a<20000){
00012         return 1;
00013     }else if(a> 20000 && a<26000){
00014         return 2;
00015     }else if(a>=26000 && a<49152){
00016         return 3;
00017     }else{
00018         return 3;
00019         }
00020             
00021 }
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