node-beaglebone-usbboot/lib/messages/protocols/eth.js

Transforms BeagleBone to mass storage device

"use strict";
/* tslint:disable */
Object.defineProperty(exports, "__esModule", { value: true });
const util_1 = require("./util");
const bp = require('binary-parser-encoder'); // Binary parser module
const sp = require('schemapack');
const Parser = bp.Parser;
// ether2 header for encoding
const ethhdr_e = sp.build([
    { h_dest: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8', 4: 'uint8', 5: 'uint8' } },
    { h_source: { 0: 'uint8', 1: 'uint8', 2: 'uint8', 3: 'uint8', 4: 'uint8', 5: 'uint8' } },
    { h_proto: 'uint16' },
    { pad: 'string' },
]);
class Eth {
    // ether header
    parseEthHdr(buff) {
        const ethhdr = new Parser()
            .array('h_dest', {
            type: 'uint8',
            length: 6,
        })
            .array('h_source', {
            type: 'uint8',
            length: 6,
        })
            .uint16be('h_proto');
        return ethhdr.parse(buff);
    }
    // Function for ether2 data packet
    makeEther2(dest, source, proto) {
        const eth = [{ h_dest: dest }, { h_source: source }, { h_proto: proto }];
        const data = util_1.fixBuff(ethhdr_e.encode(eth));
        return data;
    }
}
exports.Eth = Eth;
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