ISR(TIMER2_OVF_vect) compiling error for grove sensor

Other Hardware Sensors
1

Hello I am using Grove - Air Quality Sensor v1.3 with Seedunio LoRaWAN. I have uploaded my grove sensor code in arduino but I got this error:


Arduino: 1.8.15 Hourly Build 2021/05/19 12:33 (Windows 10), Board: "Seeeduino LoRaWAN, Arduino, Off"

sketch_jun24b:25:5: error: expected constructor, destructor, or type conversion before '(' token

 ISR(TIMER2_OVF_vect)

     ^

sketch_jun24b:25:4: error: expected constructor, destructor, or type conversion before '(' token

 ISR(TIMER2_OVF_vect)

    ^

exit status 1

expected constructor, destructor, or type conversion before '(' token

My sensor code is here:

#include"AirQuality.h"
#include"Arduino.h"
AirQuality airqualitysensor;
int current_quality =-1;
void setup()
{
    Serial.begin(9600);
    airqualitysensor.init(A0);
}
void loop()
{
    current_quality=airqualitysensor.slope();
    if (current_quality >= 0)// if a valid data returned.
    {
        if (current_quality==0)
            Serial.println("High pollution! Force signal active");
        else if (current_quality==1)
            Serial.println("High pollution!");
        else if (current_quality==2)
            Serial.println("Low pollution!");
        else if (current_quality ==3)
            Serial.println("Fresh air");
    }
}
ISR(TIMER2_OVF_vect)
{
    if(airqualitysensor.counter==122)//set 2 seconds as a detected duty
    {
        airqualitysensor.last_vol=airqualitysensor.first_vol;
        airqualitysensor.first_vol=analogRead(A0);
        airqualitysensor.counter=0;
        airqualitysensor.timer_index=1;
        PORTB=PORTB^0x20;
    }
    else
    {
        airqualitysensor.counter++;
    }
}

I am new in Arduino and I have no clue what to do! Thanks in advance

2

I'm going to guess that your board doesn't use an AVR.

Why are you using an hourly build?
:o

3

I am using Seeduino LoRaWAN board to integrate with grove sensor. I have followed this link: Grove - Air Quality Sensor v1.3 - Seeed Wiki

Should I avoid hourly build and dowlonad the latest IDE?

4

I think that's an ARM processor.

5

To solve this problem can you suggest me anything that I should do. I am new and no clue how to solve this

6

Which is more important?
The LoRaWAN or sensor readings?
If the former, you'll need to find (or write) a compatible library, if the latter, just swap to an AVR-based board.

7

The code was intended for the Seeeduino board, which is compatible with Arduino Uno and the like.

8

Same problem is with me. Please help!!!

9

Did you found the solution?

10

I think you can substitute a two second millis() timer to trigger your readings. Indeed the basic library example for AirQuality.h uses delay() to time the readings.

11

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