123 lines
3.4 KiB
JavaScript
123 lines
3.4 KiB
JavaScript
var serialport = require('serialport'),
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SerialPort = serialport.SerialPort,
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exec = require('child_process').exec,
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mcopy = {};
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/******
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Arduino handlers
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*******/
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mcopy.arduino = {
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path : '',
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known: [
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'/dev/tty.usbmodem1a161',
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'/dev/tty.usbserial-A800f8dk',
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'/dev/tty.usbserial-A900cebm',
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'/dev/tty.usbmodem1a131',
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'/dev/tty.usbserial-a900f6de',
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'/dev/tty.usbmodem1a141'
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],
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serial : {},
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baud : 57600,
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queue : {},
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timer : 0,
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lock : false
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};
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mcopy.arduino.init = function (callback) {
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'use strict';
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console.log('Searching for devices...');
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var cmd = 'ls /dev/tty.*';
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exec(cmd, function (e, std) {
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var devices = std.split('\n'),
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matches = [];
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devices.pop();
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for (var i = 0; i < devices.length; i++) {
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if (devices[i].indexOf('usbserial') !== -1
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||devices[i].indexOf('usbmodem') !== -1){
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matches.push(devices[i]);
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}
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}
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if (matches.length === 0) {
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console.log('No devices found.');
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if (callback) { callback(false); }
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} else if (matches.length > 0) {
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console.log('Found ' + matches[0]);
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mcopy.arduino.path = matches[0];
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//once connected to the arduino
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//start user interface
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if (callback) { callback(true); }
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}
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});
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};
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//commands which respond to a sent char
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mcopy.arduino.send = function (cmd, res) {
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'use strict';
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if (!mcopy.arduino.lock) {
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mcopy.arduino.lock = true;
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mcopy.arduino.queue[cmd] = res;
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setTimeout(function () {
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mcopy.arduino.serial.write(cmd, function (err, results) {
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if (err) { console.log(err); }
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mcopy.arduino.lock = false;
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mcopy.arduino.timer = new Date().getTime();
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});
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}, mcopy.cfg.arduino.serialDelay);
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}
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};
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//send strings, after char triggers firmware to accept
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mcopy.arduino.string = function (str) {
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'use strict';
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setTimeout(function () {
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mcopy.arduino.serial.write(str, function (err, results) {
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if (err) { console.log(err); }
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//console.log('sent: ' + str);
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});
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}, mcopy.cfg.arduino.serialDelay);
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};
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//with same over serial when done
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mcopy.arduino.end = function (data) {
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'use strict';
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var end = new Date().getTime(),
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ms = end - mcopy.arduino.timer;
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if (mcopy.arduino.queue[data] !== undefined) {
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mcopy.arduino.lock = false;
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console.log('Command ' + data + ' took ' + ms + 'ms');
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mcopy.arduino.queue[data](ms);
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delete mcopy.arduino.queue[data]; //add timestamp?
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} else {
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console.log('Received stray "' + data + '" from ' + mcopy.arduino.path); //silent to user
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}
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};
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mcopy.arduino.connect = function (callback) {
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'use strict';
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console.log('Connecting to ' + mcopy.arduino.path + '...');
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mcopy.arduino.serial = new SerialPort(mcopy.arduino.path, {
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baudrate: mcopy.cfg.arduino.baud,
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parser: serialport.parsers.readline("\n")
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}, false);
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mcopy.arduino.serial.open(function (error) {
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if (error) {
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return console.log('failed to open: '+ error);
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} else {
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console.log('Opened connection with ' + mcopy.arduino.path);
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mcopy.arduino.serial.on('data', function (data) {
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data = data.replace('\r', '');
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mcopy.arduino.end(data);
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});
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setTimeout(function () {
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console.log('Verifying firmware...');
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mcopy.arduino.send(mcopy.cfg.arduino.cmd.connect, function () {
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console.log('Firmware verified');
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console.log('Optical printer ready!');
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if (callback) { callback(); }
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});
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}, 2000);
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}
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});
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};
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if (typeof module !== 'undefined' && module.parent) {
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module.exports = function (cfg) {
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mcopy.cfg = cfg;
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return mcopy.arduino;
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}
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} |