235 lines
6.6 KiB
JavaScript
235 lines
6.6 KiB
JavaScript
'use strict'
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const SerialPort = require('serialport')
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const exec = require('child_process').exec
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let eventEmitter
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const 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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'/dev/ttyACM0',
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'COM3'
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],
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alias : {
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},
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serial : {
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connect : {},
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projector : {},
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camera : {},
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light : {}
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},
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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.enumerate = function (callback) {
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let matches = []
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SerialPort.list((err, ports) => {
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//console.dir(ports)
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ports.forEach(port => {
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if (mcopy.arduino.known.indexOf(port.comName) !== -1) {
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matches.push(port.comName)
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} else if ((port.manufacturer + '').toLowerCase().indexOf('arduino') !== -1) {
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matches.push(port.comName)
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}
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})
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if (matches.length === 0) {
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if (callback) { callback('No USB devices found'); }
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} else if (matches.length > 0) {
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if (callback) { callback(null, matches); }
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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 (serial, cmd, res) {
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const device = mcopy.arduino.alias[serial]
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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(() => {
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mcopy.arduino.serial[device].write(cmd, (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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eventEmitter.emit('arduino_send', cmd)
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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 (serial, str) {
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const device = mcopy.arduino.alias[serial]
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setTimeout(function () {
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if (typeof mcopy.arduino.serial[device].fake !== 'undefined'
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&& mcopy.arduino.serial[device].fake) {
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mcopy.arduino.serial[device].string(str);
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} else {
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mcopy.arduino.serial[device].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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}
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}, mcopy.cfg.arduino.serialDelay);
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};
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//respond with same char over serial when done
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mcopy.arduino.end = function (data) {
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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); //execute callback
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eventEmitter.emit('arduino_end', data);
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delete mcopy.arduino.queue[data];
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} else {
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console.log('Received stray "' + data + '"'); //silent to user
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}
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};
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mcopy.arduino.alias = function (serial, device) {
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console.log(`Making "${serial}" an alias of ${device}`)
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mcopy.arduino.alias[serial] = device
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}
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mcopy.arduino.connect = function (serial, device, confirm, callback) {
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mcopy.arduino.path[serial] = device;
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mcopy.arduino.alias[serial] = device;
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mcopy.arduino.serial[device] = new SerialPort(mcopy.arduino.path[serial], {
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autoOpen : false,
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baudrate: mcopy.cfg.arduino.baud,
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parser: SerialPort.parsers.readline("\n")
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});
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mcopy.arduino.serial[device].open(error => {
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if (error) {
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if (callback) { callback(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[serial]} as ${serial}`);
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if (!confirm) {
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mcopy.arduino.serial[device].on('data', 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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} else {
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mcopy.arduino.serial[device].on('data', data => {
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data = data.replace('\r', '')
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mcopy.arduino.confirmEnd(data)
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})
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}
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if (callback) {
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callback(null, mcopy.arduino.path[serial])
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}
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}
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});
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};
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mcopy.arduino.confirmExec = {};
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mcopy.arduino.confirmEnd = function (data) {
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if (data === mcopy.cfg.arduino.cmd.connect
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|| data === mcopy.cfg.arduino.cmd.proj_identifier
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|| data === mcopy.cfg.arduino.cmd.cam_identifier
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|| data === mcopy.cfg.arduino.cmd.light_identifier
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|| data === mcopy.cfg.arduino.cmd.proj_light_identifier
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|| data === mcopy.cfg.arduino.cmd.proj_cam_light_identifier
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|| data === mcopy.cfg.arduino.cmd.proj_cam_identifier ) {
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mcopy.arduino.confirmExec(null, data);
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mcopy.arduino.confirmExec = {};
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}
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};
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mcopy.arduino.verify = function (callback) {
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const device = mcopy.arduino.alias['connect']
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mcopy.arduino.confirmExec = function (err, data) {
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if (data === mcopy.cfg.arduino.cmd.connect) {
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callback(null, true);
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}
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};
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setTimeout(function () {
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mcopy.arduino.serial[device].write(mcopy.cfg.arduino.cmd.connect, (err, results) => {
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if (err) {
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return console.log(err);
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}
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});
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}, mcopy.cfg.arduino.serialDelay);
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};
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mcopy.arduino.distinguish = function (callback) {
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const device = mcopy.arduino.alias['connect']
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mcopy.arduino.confirmExec = function (err, data) {
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if (data === mcopy.cfg.arduino.cmd.proj_identifier) {
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callback(null, 'projector');
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} else if (data === mcopy.cfg.arduino.cmd.cam_identifier) {
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callback(null, 'camera');
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} else if (data === mcopy.cfg.arduino.cmd.light_identifier) {
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callback(null, 'light')
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} else if (data === mcopy.cfg.arduino.cmd.proj_light_identifier) {
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callback(null, 'projector,light')
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} else if (data === mcopy.cfg.arduino.cmd.proj_cam_light_identifier) {
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callback(null, 'projector,camera,light')
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} else if (data === mcopy.cfg.arduino.cmd.proj_cam_identifier) {
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callback(null, 'projector,camera')
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}
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}
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setTimeout(function () {
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mcopy.arduino.serial[device].write(mcopy.cfg.arduino.cmd.mcopy_identifier, function (err, results) {
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if (err) {
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return console.log(err);
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}
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});
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}, mcopy.cfg.arduino.serialDelay);
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}
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mcopy.arduino.close = function (callback) {
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let device = mcopy.arduino.alias['connect']
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mcopy.arduino.serial[device].close((err) => {
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if (callback) {
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callback(err)
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}
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});
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};
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mcopy.arduino.fakeConnect = function (serial, callback) {
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//console.log('Connecting to fake arduino...');
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const device = '/dev/fake'
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mcopy.arduino.alias[serial] = device
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mcopy.arduino.serial[device] = {
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write : function (cmd, res) {
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var t = {
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c : mcopy.cfg.arduino.cam.time + mcopy.cfg.arduino.cam.delay,
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p : mcopy.cfg.arduino.proj.time + mcopy.cfg.arduino.proj.delay
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},
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timeout = t[cmd];
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if (typeof timeout === 'undefined') timeout = 10;
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mcopy.arduino.timer = +new Date();
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setTimeout(() => {
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mcopy.arduino.end(cmd)
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}, timeout)
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},
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string : function (str) {
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//do nothing
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return true
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},
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fake : true
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};
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//console.log('Connected to fake arduino! Not real! Doesn\'t exist!');
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if (callback) callback()
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}
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if (typeof module !== 'undefined' && module.parent) {
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module.exports = function (cfg, ee) {
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eventEmitter = ee
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mcopy.cfg = cfg
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return mcopy.arduino
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}
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} |