HEPTA-Sat Training 2020 / Mbed 2 deprecated Lab7-sample_air-quality-sensor

for textbook v4.4

Dependencies:   Grove_Air_Quality_Sensor_Library mbed

Connection

VDD → 3.3V or 5V (supply voltage)

GND → GND

SIG → p15 (mbed)

NC → Non connection

main.cpp@2:225383599b95, 2019-11-06 (annotated)

Committer:
HeptaSatTraining2019
Date:
Wed Nov 06 18:32:23 2019 +0000
Revision:
2:225383599b95
Parent:
1:888328032581 

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


mbedAustin

1:888328032581


     1

#include"mbed.h"





mbedAustin

1:888328032581


     2

#include"Air_Quality.h"





mbedAustin

1:888328032581


     3

AirQuality airqualitysensor;





mbedAustin

1:888328032581


     4

int current_quality = -1;





HeptaSatTraining2019

2:225383599b95


     5

PinName analogPin = p15;





mbedAustin

0:2dbce8e35862


     6







mbedAustin

1:888328032581


     7

// Interrupt Handler





mbedAustin

1:888328032581


     8

void AirQualityInterrupt()





mbedAustin

1:888328032581


     9

{





mbedAustin

1:888328032581


    10

    AnalogIn sensor(analogPin);





mbedAustin

1:888328032581


    11

    airqualitysensor.last_vol = airqualitysensor.first_vol;





mbedAustin

1:888328032581


    12

    airqualitysensor.first_vol = sensor.read()*1000;





mbedAustin

1:888328032581


    13

    airqualitysensor.timer_index = 1;





mbedAustin

1:888328032581


    14

}





mbedAustin

0:2dbce8e35862


    15







mbedAustin

1:888328032581


    16

// Main loop





mbedAustin

1:888328032581


    17

int main()





mbedAustin

1:888328032581


    18

{





mbedAustin

1:888328032581


    19

    airqualitysensor.init(analogPin, AirQualityInterrupt);





mbedAustin

1:888328032581


    20

    while(1) {





mbedAustin

1:888328032581


    21

        current_quality=airqualitysensor.slope();





mbedAustin

1:888328032581


    22

        if (current_quality >= 0) { // if a valid data returned.





mbedAustin

1:888328032581


    23

            if (current_quality == 0)





mbedAustin

1:888328032581


    24

                printf("High pollution! Force signal active\n\r");





mbedAustin

1:888328032581


    25

            else if (current_quality == 1)





mbedAustin

1:888328032581


    26

                printf("High pollution!\n\r");





mbedAustin

1:888328032581


    27

            else if (current_quality == 2)





mbedAustin

1:888328032581


    28

                printf("Low pollution!\n\r");





mbedAustin

1:888328032581


    29

            else if (current_quality == 3)





mbedAustin

1:888328032581


    30

                printf("Fresh air\n\r");





mbedAustin

1:888328032581


    31

        }





mbedAustin

0:2dbce8e35862


    32

    }





mbedAustin

0:2dbce8e35862


    33

}