Work towards issue #52. Adds a statement within the arduino.end() method that watches for an 'E' char byte and will alert the UI while pausing a running sequence. Needs to be in place for firmware to be able to throw errors to UI.

app/main.js

@@ -68,6 +68,14 @@ var createWindow = function () {
 	})
 }
 
+var errorState = function () {
+	if (seq && seq.running) {
+		//pause sequence if running
+		seq.pause();
+	}
+	mainWindow.webContents.send('error_state', { stop : true });
+}
+
 var init = async function () {
 	log = await require('log')({})
 
@@ -85,7 +93,7 @@ var init = async function () {
 	display = require('display')(SYSTEM)
 	ffmpeg = require('ffmpeg')(SYSTEM)
 	ffprobe = require('ffprobe')(SYSTEM)
-	arduino = require('arduino')(cfg, ee)
+	arduino = require('arduino')(cfg, ee, errorState)
 
 	dev = require('devices')(arduino, settings, mainWindow)
 

app/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.6.5",
+  "version": "1.6.6",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.6.5",
+  "version": "1.6.6",
   "description": "GUI for the mcopy small gauge film optical printer platform",
   "main": "main.js",
   "scripts": {

app/src/lib/ui/devices.ts

@@ -19,6 +19,7 @@ class Devices {
 	listen () {
 		ipcRenderer.on('ready', this.ready.bind(this));
 		ipcRenderer.on('intval', this.intvalCb.bind(this));
+		ipcRenderer.on('error_state', this.errorState.bind(this));
 	}
 
 	async ready (event : any, arg : any) {
@@ -172,6 +173,13 @@ class Devices {
 			$('#intval').removeClass('active');
 		}
 	}
+
+	errorState () {
+		gui.spinner(false);
+		gui.overlay(false);
+		gui.notify('DEVICES', `Hardware error detected`);
+		gui.warn('Error', 'Hardware error detected. Please address before continuing.');
+	}
 }
 
 devices = new Devices();

cli/lib/arduino/index.js

@@ -25,7 +25,7 @@ const KNOWN = [
  * Class representing the arduino communication features
  **/
 class Arduino {
-    constructor() {
+    constructor(errorState) {
         this.path = {};
         this.known = KNOWN;
         this.alias = {};
@@ -35,6 +35,7 @@ class Arduino {
         this.timer = 0;
         this.lock = false;
         this.locks = {};
+        this.errorState = errorState;
         this.init();
     }
     async init() {
@@ -169,6 +170,11 @@ class Arduino {
             eventEmitter.emit('arduino_end', data);
             delete this.queue[data];
         }
+        else if (data === 'E') {
+            //error state
+            //stop sequence
+            //throw error in ui
+        }
         else {
             //console.log('Received stray "' + data + '"'); //silent to user
         }
@@ -391,10 +397,10 @@ class Arduino {
     }
 }
 if (typeof module !== 'undefined' && module.parent) {
-    module.exports = function (c, ee) {
+    module.exports = function (c, ee, errorState) {
         eventEmitter = ee;
         cfg = c;
-        arduino = new Arduino();
+        arduino = new Arduino(errorState);
         return arduino;
     };
 }

cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mcopy-cli",
-  "version": "1.6.5",
+  "version": "1.6.6",
   "description": "CLI for controlling the mcopy optical printer platform",
   "main": "index.js",
   "scripts": {

data/cfg.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.6.5",
+  "version": "1.6.6",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "mcopy",
-  "version": "1.6.5",
+  "version": "1.6.6",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mcopy",
-  "version": "1.6.5",
+  "version": "1.6.6",
   "description": "Small gauge film optical printer platform",
   "main": "build.js",
   "directories": {

src/arduino/index.ts

@@ -33,18 +33,20 @@ const KNOWN : string[] = [
 class Arduino {
 
 	private log : any;
-	private path : any = {}
+	private path : any = {};
-	private known : string[] = KNOWN
+	private known : string[] = KNOWN;
-	private alias : any = {}
+	private alias : any = {};
-	private serial : any = { connect : {}, projector : {}, camera : {}, light : {} }
+	private serial : any = { connect : {}, projector : {}, camera : {}, light : {} };
-	private baud : number = 57600
+	private baud : number = 57600;
-	private queue : any = {}
+	private queue : any = {};
-	private timer : number = 0
+	private timer : number = 0;
-	private lock : boolean = false
+	private lock : boolean = false;
-	private locks : any = {}
+	private locks : any = {};
-	private confirmExec : any
+	private confirmExec : any;
+	private errorState : Function;
 
-	constructor () {
+	constructor (errorState : Function) {
+		this.errorState = errorState;
 		this.init()
 	}
 
@@ -169,14 +171,18 @@ class Arduino {
 	}
 
 	end (serial : string, data : string) {
-		const end = new Date().getTime();
+		const end : number = new Date().getTime();
-		const ms = end - this.timer;
+		const ms : number = end - this.timer;
-		let complete;
+		let complete : any;
 		if (this.queue[data] !== undefined) {
 			this.locks[serial] = false; 
 			complete = this.queue[data](ms); //execute callback
 			eventEmitter.emit('arduino_end', data);
 			delete this.queue[data];
+		} else if (data === 'E') {
+			//error state
+			//stop sequence
+			//throw error in ui
 		} else {
 			//console.log('Received stray "' + data + '"'); //silent to user
 		}
@@ -397,10 +403,10 @@ class Arduino {
 }
 
 if (typeof module !== 'undefined' && module.parent) {
-	module.exports = function (c : any, ee : any) {
+	module.exports = function (c : any, ee : any, errorState : Function) {
 		eventEmitter = ee
 		cfg = c
-		arduino = new Arduino()
+		arduino = new Arduino(errorState)
 		return arduino
 	}
 }