372 lines
11 KiB
JavaScript
372 lines
11 KiB
JavaScript
'use strict';
|
|
const SerialPort = require('serialport');
|
|
const Readline = SerialPort.parsers.Readline;
|
|
const exec = require('child_process').exec;
|
|
const parser = new Readline('');
|
|
const newlineRe = new RegExp('\n', 'g');
|
|
const returnRe = new RegExp('\r', 'g');
|
|
let eventEmitter;
|
|
let cfg;
|
|
/**
|
|
* Pause the process for X milliseconds in async/await functions
|
|
*
|
|
* @param {integer} ms milliseconds
|
|
*
|
|
* @returns {Promise} Resolves after wait
|
|
**/
|
|
async function delay(ms) {
|
|
return new Promise(resolve => {
|
|
return setTimeout(resolve, ms);
|
|
});
|
|
}
|
|
/**
|
|
* Send a command to an Arduino using async/await
|
|
*
|
|
* @param {string} device Arduino identifier
|
|
* @param {string} cmd Single character command to send
|
|
*
|
|
* @returns {Promise} Resolves after sending
|
|
**/
|
|
async function send(device, cmd) {
|
|
return new Promise((resolve, reject) => {
|
|
arduino.queue[cmd] = (ms) => {
|
|
return resolve(ms);
|
|
};
|
|
return arduino.serial[device].write(cmd, (err, results) => {
|
|
if (err) {
|
|
//console.error(err)
|
|
return reject(err);
|
|
}
|
|
//
|
|
});
|
|
});
|
|
}
|
|
/**
|
|
* Send a string to an Arduino using async/await
|
|
*
|
|
* @param {string} device Arduino identifier
|
|
* @param {string} str String to send
|
|
*
|
|
* @returns {Promise} Resolves after sending
|
|
**/
|
|
async function write(device, str) {
|
|
return new Promise((resolve, reject) => {
|
|
arduino.serial[device].write(str, function (err, results) {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
//console.log('sent: ' + str)
|
|
return resolve(results);
|
|
});
|
|
});
|
|
}
|
|
/**
|
|
* Connect to an Arduino using async/await
|
|
*
|
|
* @param {string} device Arduino identifier
|
|
*
|
|
* @returns {Promise} Resolves after opening
|
|
**/
|
|
async function openArduino(device) {
|
|
return new Promise((resolve, reject) => {
|
|
return arduino.serial[device].open(error => {
|
|
if (error) {
|
|
return reject(error);
|
|
}
|
|
return resolve(true);
|
|
});
|
|
});
|
|
}
|
|
/**
|
|
* Close a connection to an Arduino using async/await
|
|
*
|
|
* @param {string} device Arduino identifier
|
|
*
|
|
* @returns {Promise} Resolves after closing
|
|
**/
|
|
async function closeArduino(device) {
|
|
return new Promise((resolve, reject) => {
|
|
return arduino.serial[device].close((err) => {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
return resolve(true);
|
|
});
|
|
});
|
|
}
|
|
/******
|
|
Arduino handlers
|
|
*******/
|
|
const arduino = {
|
|
path: {},
|
|
known: [
|
|
'/dev/tty.usbmodem1a161',
|
|
'/dev/tty.usbserial-A800f8dk',
|
|
'/dev/tty.usbserial-A900cebm',
|
|
'/dev/tty.usbmodem1a131',
|
|
'/dev/tty.usbserial-a900f6de',
|
|
'/dev/tty.usbmodem1a141',
|
|
'/dev/ttyACM0',
|
|
'COM3'
|
|
],
|
|
alias: {},
|
|
serial: {
|
|
connect: {},
|
|
projector: {},
|
|
camera: {},
|
|
light: {}
|
|
},
|
|
baud: 57600,
|
|
queue: {},
|
|
timer: 0,
|
|
lock: false,
|
|
locks: {}
|
|
};
|
|
arduino.enumerate = async function () {
|
|
return new Promise((resolve, reject) => {
|
|
return SerialPort.list((err, ports) => {
|
|
let matches = [];
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
ports.forEach(port => {
|
|
if (arduino.known.indexOf(port.comName) !== -1) {
|
|
matches.push(port.comName);
|
|
}
|
|
else if ((port.manufacturer + '').toLowerCase().indexOf('arduino') !== -1) {
|
|
matches.push(port.comName);
|
|
}
|
|
else if ((port.comName + '').toLowerCase().indexOf('usbserial') !== -1) {
|
|
matches.push(port.comName);
|
|
}
|
|
else if ((port.comName + '').toLowerCase().indexOf('usbmodem') !== -1) {
|
|
matches.push(port.comName);
|
|
}
|
|
});
|
|
if (matches.length === 0) {
|
|
return reject('No USB devices found');
|
|
}
|
|
else if (matches.length > 0) {
|
|
return resolve(matches);
|
|
}
|
|
});
|
|
});
|
|
};
|
|
//commands which respond to a sent char
|
|
arduino.send = async function (serial, cmd, res) {
|
|
const device = arduino.alias[serial];
|
|
let results;
|
|
if (arduino.locks[serial]) {
|
|
return false;
|
|
}
|
|
arduino.locks[serial] = true;
|
|
await delay(cfg.arduino.serialDelay);
|
|
try {
|
|
results = await send(device, cmd);
|
|
}
|
|
catch (e) {
|
|
return console.error(e);
|
|
}
|
|
arduino.locks[serial] = false;
|
|
arduino.timer = new Date().getTime();
|
|
return await eventEmitter.emit('arduino_send', cmd);
|
|
};
|
|
//send strings, after char triggers firmware to accept
|
|
arduino.string = async function (serial, str) {
|
|
const device = arduino.alias[serial];
|
|
let writeSuccess;
|
|
await delay(cfg.arduino.serialDelay);
|
|
if (typeof arduino.serial[device].fake !== 'undefined'
|
|
&& arduino.serial[device].fake) {
|
|
return arduino.serial[device].string(str);
|
|
}
|
|
else {
|
|
try {
|
|
writeSuccess = await write(device, str);
|
|
}
|
|
catch (e) {
|
|
return console.error(e);
|
|
}
|
|
return writeSuccess;
|
|
}
|
|
};
|
|
//respond with same char over serial when done
|
|
arduino.end = async function (serial, data) {
|
|
const end = new Date().getTime();
|
|
const ms = end - arduino.timer;
|
|
let complete;
|
|
if (arduino.queue[data] !== undefined) {
|
|
arduino.locks[serial] = false;
|
|
//console.log('Command ' + data + ' took ' + ms + 'ms');
|
|
complete = arduino.queue[data](ms); //execute callback
|
|
eventEmitter.emit('arduino_end', data);
|
|
delete arduino.queue[data];
|
|
}
|
|
else {
|
|
//console.log('Received stray "' + data + '"'); //silent to user
|
|
}
|
|
return complete;
|
|
};
|
|
arduino.alias = function (serial, device) {
|
|
console.log(`Making "${serial}" an alias of ${device}`);
|
|
arduino.alias[serial] = device;
|
|
};
|
|
arduino.connect = async function (serial, device, confirm) {
|
|
return new Promise(async (resolve, reject) => {
|
|
let connectSuccess;
|
|
arduino.path[serial] = device;
|
|
arduino.alias[serial] = device;
|
|
arduino.serial[device] = new SerialPort(arduino.path[serial], {
|
|
autoOpen: false,
|
|
baudRate: cfg.arduino.baud,
|
|
parser: parser
|
|
});
|
|
arduino.locks[device] = false;
|
|
try {
|
|
connectSuccess = await openArduino(device);
|
|
}
|
|
catch (e) {
|
|
console.error('failed to open: ' + e);
|
|
return reject(e);
|
|
}
|
|
console.log(`Opened connection with ${arduino.path[serial]} as ${serial}`);
|
|
if (!confirm) {
|
|
arduino.serial[device].on('data', async (data) => {
|
|
let d = data.toString('utf8');
|
|
d = d.replace(newlineRe, '').replace(returnRe, '');
|
|
return await arduino.end(serial, d);
|
|
});
|
|
}
|
|
else {
|
|
arduino.serial[device].on('data', async (data) => {
|
|
let d = data.toString('utf8');
|
|
d = d.replace(newlineRe, '').replace(returnRe, '');
|
|
return await arduino.confirmEnd(d);
|
|
});
|
|
}
|
|
return resolve(arduino.path[serial]);
|
|
});
|
|
};
|
|
arduino.confirmExec = {};
|
|
arduino.confirmEnd = function (data) {
|
|
//console.dir(data)
|
|
if (data === cfg.arduino.cmd.connect
|
|
|| data === cfg.arduino.cmd.proj_identifier
|
|
|| data === cfg.arduino.cmd.cam_identifier
|
|
|| data === cfg.arduino.cmd.light_identifier
|
|
|| data === cfg.arduino.cmd.proj_light_identifier
|
|
|| data === cfg.arduino.cmd.proj_cam_light_identifier
|
|
|| data === cfg.arduino.cmd.proj_cam_identifier) {
|
|
arduino.confirmExec(null, data);
|
|
arduino.confirmExec = {};
|
|
}
|
|
};
|
|
arduino.verify = async function () {
|
|
return new Promise(async (resolve, reject) => {
|
|
const device = arduino.alias['connect'];
|
|
let writeSuccess;
|
|
arduino.confirmExec = function (err, data) {
|
|
if (data === cfg.arduino.cmd.connect) {
|
|
return resolve(true);
|
|
}
|
|
else {
|
|
return reject('Wrong data returned');
|
|
}
|
|
};
|
|
await delay(cfg.arduino.serialDelay);
|
|
try {
|
|
writeSuccess = await send(device, cfg.arduino.cmd.connect);
|
|
}
|
|
catch (e) {
|
|
return reject(e);
|
|
}
|
|
return resolve(writeSuccess);
|
|
});
|
|
};
|
|
arduino.distinguish = async function () {
|
|
return new Promise(async (resolve, reject) => {
|
|
const device = arduino.alias['connect'];
|
|
let writeSuccess;
|
|
let type;
|
|
arduino.confirmExec = function (err, data) {
|
|
if (data === cfg.arduino.cmd.proj_identifier) {
|
|
type = 'projector';
|
|
}
|
|
else if (data === cfg.arduino.cmd.cam_identifier) {
|
|
type = 'camera';
|
|
}
|
|
else if (data === cfg.arduino.cmd.light_identifier) {
|
|
type = 'light';
|
|
}
|
|
else if (data === cfg.arduino.cmd.proj_light_identifier) {
|
|
type = 'projector,light';
|
|
}
|
|
else if (data === cfg.arduino.cmd.proj_cam_light_identifier) {
|
|
type = 'projector,camera,light';
|
|
}
|
|
else if (data === cfg.arduino.cmd.proj_cam_identifier) {
|
|
type = 'projector,camera';
|
|
}
|
|
else if (data === cfg.ardino.cmd.proj_second_identifier) {
|
|
type = 'projector_second';
|
|
}
|
|
return resolve(type);
|
|
};
|
|
await delay(cfg.arduino.serialDelay);
|
|
try {
|
|
writeSuccess = await send(device, cfg.arduino.cmd.mcopy_identifier);
|
|
}
|
|
catch (e) {
|
|
console.error(e);
|
|
return reject(e);
|
|
}
|
|
});
|
|
};
|
|
arduino.close = async function (callback) {
|
|
const device = arduino.alias['connect'];
|
|
let closeSuccess;
|
|
try {
|
|
closeSuccess = await closeArduino(device);
|
|
}
|
|
catch (e) {
|
|
return console.error(e);
|
|
}
|
|
return closeSuccess;
|
|
};
|
|
arduino.fakeConnect = async function (serial) {
|
|
//console.log('Connecting to fake arduino...');
|
|
const device = '/dev/fake';
|
|
arduino.alias[serial] = device;
|
|
arduino.serial[device] = {
|
|
write: function (cmd, cb) {
|
|
const t = {
|
|
c: cfg.arduino.cam.time + cfg.arduino.cam.delay,
|
|
p: cfg.arduino.proj.time + cfg.arduino.proj.delay
|
|
};
|
|
let timeout = t[cmd];
|
|
let end;
|
|
if (typeof timeout === 'undefined')
|
|
timeout = 10;
|
|
arduino.timer = +new Date();
|
|
setTimeout(() => {
|
|
arduino.end(serial, cmd);
|
|
return cb();
|
|
}, timeout);
|
|
},
|
|
string: async function (str) {
|
|
//do nothing
|
|
return true;
|
|
},
|
|
fake: true
|
|
};
|
|
//console.log('Connected to fake arduino! Not real! Doesn\'t exist!');
|
|
return true;
|
|
};
|
|
if (typeof module !== 'undefined' && module.parent) {
|
|
module.exports = function (c, ee) {
|
|
eventEmitter = ee;
|
|
cfg = c;
|
|
return arduino;
|
|
};
|
|
}
|
|
//# sourceMappingURL=index.js.map
|