flashmagic.js/lib/MemoryReader.js

NXP LPC Microprocessor Programmer

"use strict";
var Symbol = require('es6-symbol');
var Utilities = require('./Utilities');
var UUDecoder_1 = require('./UUDecoder');
var _addressSym = Symbol();
var MemoryReader = (function () {
    function MemoryReader(isp) {
        this.isp = isp;
    }
    MemoryReader.prototype.readFully = function (block) {
        var _this = this;
        var count = Utilities.alignCount(block.length);
        return this.isp.sendCommand("R " + block.address + " " + count)
            .then(function () { return _this.downloadChunk(block.length); });
    };
    MemoryReader.prototype.downloadChunk = function (length) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            var uud = new UUDecoder_1.UUDecoder();
            var isp = _this.isp;
            var lineCount = 0;
            var index = 0;
            var buffer = new Buffer(0);
            (function loop() {
                if (lineCount === Utilities.LINES_PER_UUENCODED_CHUNK || index >= length) {
                    isp.assert(new RegExp(uud.checksum.toString()))
                        .then(function () { return isp.sendLine('OK'); })
                        .then(function () {
                        uud.reset();
                        lineCount = 0;
                        if (index < length) {
                            process.nextTick(loop);
                        }
                        else {
                            resolve(buffer);
                        }
                    }).catch(function (error) { return reject(error); });
                }
                else {
                    isp.read().then(function (data) {
                        var b = uud.decode(data);
                        buffer = Buffer.concat([buffer, b], buffer.length + b.length);
                        index += b.length;
                        lineCount++;
                        process.nextTick(loop);
                    }).catch(function (error) { return reject(error); });
                }
            })();
        });
    };
    return MemoryReader;
}());
exports.MemoryReader = MemoryReader;