uploader.js

//var sp = require('serialport');
var child_process = require('child_process');
var os = require('os');
/*
sp.list(function(err,list) {
    console.log(list);
});
*/

function runAVRDude(hexfile, portpath, options, debug, cb) {
    debug("running AVR dude");

    if(options.platform.useSerial()) {
        var uploadcmd = [
            options.platform.getAvrDudeBinary(),
            '-C'+options.platform.getAvrDudeConf(),
            '-v','-v','-v', //super verbose
            '-p'+options.device.build.mcu,
            '-c'+options.device.upload.protocol,
            '-P'+portpath,
            '-b'+options.device.upload.speed,
            '-D', //don't erase
            '-Uflash:w:'+os.tmpdir() +'/'+hexfile+':i',
        ];
    } else {
        var uploadcmd = [
            options.platform.getAvrDudeBinary(),
            '-C'+options.platform.getAvrDudeConf(),
            '-c',options.platform.getProgrammerId(),//'usbtiny',
            '-p',options.device.build.mcu,//'attiny85',
            '-Uflash:w:'+hexfile,
        ];
    }

    console.log("running", uploadcmd.join(' '));
    var result = child_process.execFile(
        uploadcmd[0],
        uploadcmd.slice(1),
        function(error, stdout, stderr) {
            console.log(error,stdout,stderr);
            if(error) {
                console.log("error. code = ",error.code);
                console.log(error);
                var err = new Error("there was a problem running " + uploadcmd.join(" "));
                err.cmd = uploadcmd;
                err.output = stdout + stderr;
                console.log(stdout);
                console.log(stderr)
                debug(err);
                if(cb) cb(err);
            } else {
                debug("uploaded");
                if(cb) cb();
            }
        }
    );
}

function scanForPortReturn(list1,cb) {
    sp.list(function(err, list2) {
        console.log("list 2 is ",list2);
        console.log("lengths = ",list1.length,list2.length);
        if(list2.length < list1.length) {
            console.log("we need to rescan");
            setTimeout(function() {
                scanForPortReturn(list1, cb);
            },700);
        } else {
            console.log('we are back to normal!');
            setTimeout(function() {
                cb(list1[list1.length-1].comName);
            },500);
        }
    });
}

exports.upload = function(hexfile,portpath,options, publish, callback) {
    function debug(message) {
        var args = Array.prototype.slice.call(arguments);
        if(message instanceof Error) {
            publish({type:'error', message: args.join(" ") + message.output});
        } else {
            publish({type:"upload", message:args.join(" ")});
        }
    }

    console.log("uploading to device using ",options.device);
    //var serialpath = "/tty/foobar";
    //var serialpath = '/dev/cu.usbserial-AH019ZWX';

    if(options.device.bootloader.path == 'caterina') {
        console.log("need to do the leonardo dance");
        //scan for ports
        sp.list(function(err,list1) {
            console.log("list 1 is ",list1);
            //open port at 1200 baud
            var port = new sp.SerialPort(portpath, { baudrate: 1200 });
            port.on('open',function() {
                console.log("opened at 1200bd");
                //close port
                port.flush(function() {
                    port.close(function() {
                        console.log("did a successful close");
                        console.log("closed at 1200bd");
                        //wait 300ms
                        setTimeout(function() {
                            console.log("doing a second list");
                            //scan for ports again
                            scanForPortReturn(list1,function(ppath) {
                                console.log("got new path",ppath);
                                runAVRDude(hexfile,ppath,options, debug, callback);
                            })
                        },500);
                    })
                });

            });

        });
    } else {
        runAVRDude(hexfile,portpath,options, debug, callback);
    }
}