Thingy:52 ventilation needed alarm js

ventilationNeededAlarm.js

/** 

# CO2
//https://www.kane.co.uk/knowledge-centre/what-are-safe-levels-of-co-and-co2-in-rooms
//250-350ppm	Normal background concentration in outdoor ambient air
//350-1,000ppm	Concentrations typical of occupied indoor spaces with good air exchange
//1,000-2,000ppm	Complaints of drowsiness and poor air.
//2,000-5,000 ppm	Headaches, sleepiness and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present.

# TVOC 
https://easlab.com/iaqref.htm


 */
reset();

const YELLOW = 0xFFFF00;
const RED = 0xFF0000;
const GREEN = 0x00FF00;
const BLUE = 0x0000FF;

const MINUTE = 1000 * 60 * 60;
function blink(color, count) {
    LED1.write((color & 0xFF0000) >> 16);
    LED2.write((color & 0x00FF00) >> 8);
    LED3.write(color & 0x0000FF);

    setTimeout(function () {
        LED1.write(0);
        LED2.write(0);
        LED3.write(0);
        if (count-- > 0) {
            setTimeout(() => blink(color, count), 150);
        }
    }, 100);
}
let gasCheckInterval = 10000;
let batteryCheckInterval = MINUTE;
let gasPrev = Date.now();
let batteryPrev = Date.now();
let feedback;

Thingy.onGas(function (gas) {
    let now = Date.now();
    if (now - gasPrev > gasCheckInterval) {
        gasPrev = now;
        if (gas.eCO2 > 1000 && gas.eCO2 < 2000 || gas.TVOC > 300 && gas.TVOC < 500) {
            blink(YELLOW);
        } else if (gas.eCO2 > 2000 || gas.TVOC > 500) {
            blink(RED);
        } else {
            //blink(GREEN);
        }
    }
    if (now - batteryPrev > batteryCheckInterval) {
        batteryPrev = now;
        Thingy.getBattery(function (battery) {
            let percentage = Math.round(100 / 0.8 * (battery.voltage - 3));
            console.log('battery', battery.charging, battery.voltage, percentage + '%');
            if (battery.charging) {
                batteryCheckInterval = MINUTE;
                if (percentage < 10) {
                    blink(RED, 2);
                } else if (percentage >= 10 && percentage < 90) {
                    blink(YELLOW, 2);
                } else {
                    blink(GREEN, 2);
                }
            } else if (percentage < 10) {
                blink(RED, 2);
                batteryCheckInterval = MINUTE;
            } else {
                batteryCheckInterval = 10 * MINUTE;
            }
        });
    }
    console.log(new Date().toISOString().substr(11, 8), 'CO2:', gas.eCO2, 'TVOC:', gas.TVOC);
    if (feedback) {
        feedback = false;
        console.log('feedback', new Date().toISOString().substr(11, 8), 'CO2:', gas.eCO2, 'TVOC:', gas.TVOC);
        blink(YELLOW, Math.round(gas.eCO2 / 500));

        let battery = Thingy.getBattery();
        let percentage = Math.round(100 / 0.8 * (battery.voltage - 3));
        console.log('battery', battery.charging, battery.voltage, percentage + '%');
        //blink(BLUE, Math.round(percentage / 10));
    }
});

setWatch(function () {
    console.log("Pressed");
    feedback = true;
}, BTN, { edge: "rising", debounce: 50, repeat: true });

//Thingy.onGas()

//{ charging : bool, voltage : number }