obniz/dist/src/parts/DistanceSensor/GP2Y0A21YK0F/index.js

obniz sdk for javascript

"use strict";
/**
 * @packageDocumentation
 * @module Parts.GP2Y0A21YK0F
 */
Object.defineProperty(exports, "__esModule", { value: true });
class GP2Y0A21YK0F {
    constructor() {
        this.displayIoNames = {
            vcc: 'vcc',
            gnd: 'gnd',
            signal: 'signal',
        };
        this._unit = 'mm';
        this.keys = ['vcc', 'gnd', 'signal'];
        this.requiredKeys = ['signal'];
    }
    static info() {
        return {
            name: 'GP2Y0A21YK0F',
        };
    }
    wired(obniz) {
        this.obniz = obniz;
        obniz.setVccGnd(this.params.vcc, this.params.gnd, '5v');
        const io_signal = obniz.getIO(this.params.signal);
        io_signal.end();
        this.ad_signal = obniz.getAD(this.params.signal);
    }
    start(callback) {
        this.ad_signal.start((val) => {
            const distance = this._volt2distance(val);
            if (typeof callback === 'function') {
                callback(distance);
            }
        });
    }
    _volt2distance(val) {
        if (val <= 0) {
            val = 0.001;
        }
        let distance = 19988.34 * Math.pow((val / 5.0) * 1024, -1.25214) * 10;
        if (this._unit === 'mm') {
            distance = Math.floor(distance * 10) / 10;
        }
        else {
            distance *= 0.0393701;
            distance = Math.floor(distance * 1000) / 1000;
        }
        return distance;
    }
    async getWait() {
        const val = await this.ad_signal.getWait();
        const distance = this._volt2distance(val);
        return distance;
    }
    unit(unit) {
        if (unit === 'mm') {
            this._unit = 'mm';
        }
        else if (unit === 'inch') {
            this._unit = 'inch';
        }
        else {
            throw new Error('unknown unit ' + unit);
        }
    }
}
exports.default = GP2Y0A21YK0F;