Ready to try re-write in prototype

index.js

@@ -7,7 +7,8 @@ const { exec } = require('child_process')
 
 const BLE = require('./lib/ble')
 const intval = require('./lib/intval')
-const sequence = require('./lib/sequence')
+const Sequence = require('./lib/sequence')
+const sequence = new Sequence(intval)
 
 const PACKAGE = require('./package.json')
 const PORT = process.env.PORT || 6699
@@ -183,7 +184,7 @@ function rCounter (req, res, next) {
 	return next()
 }
 
-function rFrame (req, res, next) {
+async function rFrame (req, res, next) {
 	let dir = true
 	let exposure = 0
 	if (intval._state.frame.dir !== true) {
@@ -235,10 +236,14 @@ function rFrame (req, res, next) {
 		}
 	}
 	log.info('/frame', { method : req.method, dir : dir, exposure : exposure })
-	intval.frame(dir, exposure, (len) => {
+
-		res.send({ dir : dir, len : len})
+	if (exposure < 30000) {
+		await intval.frame(dir, exposure)
+	} else {
+		intval.frame(dir, exposure)
+		res.send({ dir : dir, len : exposure, delaying : true })
 		return next()
-	})
+	}
 }
 
 function rStatus (req, res, next) {
@@ -247,7 +252,7 @@ function rStatus (req, res, next) {
 	return next()
 }
 
-function rSequence (req, res, next) {
+async function rSequence (req, res, next) {
 	let dir = true
 	let exposure = 0
 	let delay = 0
@@ -304,33 +309,17 @@ function rSequence (req, res, next) {
 			delay = req.body.delay
 		}
 	}
-	if (intval._state.sequence && sequence._state.active) {
+	if (intval._state.sequence && sequence.active) {
-		sequence.setStop()
 		intval._state.sequence = false
+		sequence.stop()
 		res.send({ stopped : true })
-		return next()
-	} else {
-		console.time('sequence time')
-		intval._state.sequence = true
-		let seq_id = sequence.start({
-			loop : [ (next) => {
-						intval.frame(dir, exposure, (len) => {
-							next()
-						})
-					}, (next) => {
-						setTimeout(() => {
-							next()
-						}, delay)
-					}]
-		}, (seq) => {
-			console.timeEnd('sequence time')
-		})
 
-		if (seq_id === false) {
+		return next()
-			res.send({ started : false })
+
 	} else {
-			res.send({ started : true , id : seq_id })
+		intval._state.sequence = true
-		}
+		sequence.start()
+		res.send({ started : true })
 		
 		return next()
 	}
@@ -374,10 +363,14 @@ function rRestart (req, res, next) {
 
 //Ble functions
 
-function bFrame (obj, cb) {
+async function bFrame (obj, cb) {
 	let dir = true
 	let exposure = 0
 
+	if (sequence.active) {
+		return cb()
+	}
+	
 	if (intval._state.frame.dir !== true) {
 		dir = false
 	}
@@ -401,11 +394,10 @@ function bFrame (obj, cb) {
 	log.info('frame', { method : 'ble', dir : dir, exposure : exposure })
 
 	if (exposure < 5000) {
-		intval.frame(dir, exposure, (len) => {
+		await intval.frame(dir, exposure)
 		return cb()
-		})
 	} else {
-		intval.frame(dir, exposure, (len) => {})
+		intval.frame(dir, exposure)
 		return cb()
 	}
 
@@ -502,29 +494,14 @@ function bSequence (obj, cb) {
 	}
 	if (intval._state.sequence && sequence._state.active) {
 		//should not occur with single client
-		sequence.setStop()
 		intval._state.sequence = false
+		sequence.stop()
 		log.info('sequence stop', { method : 'ble' })
 		return cb()
 	} else {
-		console.time('sequence time')
 		intval._state.sequence = true
-		let seq_id = sequence.start({
+		sequence.start()
-			loop : [ (next) => {
+		log.info('sequence start', { method : 'ble' })
-						intval.frame(dir, exposure, (len) => {
-							next()
-						})
-					}, (next) => {
-						setTimeout(() => {
-							next()
-						}, delay)
-					}]
-		}, (seq) => {
-			console.timeEnd('sequence time')
-		})
-		if (seq_id !== false) {
-			log.info('sequence start', { method : 'ble', id : seq_id })
-		}
 		return cb()
 	}
 }
@@ -558,6 +535,7 @@ function bUpdate (obj, cb) {
 		}, 20)
 	})
 }
+
 function bRestart (obj, cb) {
 	log.info('restart', { method : 'ble' })
 	cb()
@@ -607,7 +585,6 @@ function index (req, res, next) {
 }
 
 function init () {
-	intval.init()
 	intval.sequence = seq
 	createServer()
 	createBLE()

lib/delay/index.js

@@ -12,6 +12,7 @@ function delay(ms) {
         return setTimeout(resolve, ms);
     });
 }
+exports.delay = delay;
 module.exports.delay = delay;
 exports.default = delay;
 //# sourceMappingURL=index.js.map

lib/delay/index.js.map

@@ -1 +1 @@
-{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/delay/index.ts"],"names":[],"mappings":"AAAA,YAAY,CAAC;;AAEb;;;;;;IAMI;AAEJ,SAAS,KAAK,CAAE,EAAW;IAC1B,OAAO,IAAI,OAAO,CAAC,CAAC,OAAa,EAAE,EAAE;QACpC,OAAO,UAAU,CAAC,OAAO,EAAE,EAAE,CAAC,CAAC;IAChC,CAAC,CAAC,CAAC;AACJ,CAAC;AAED,MAAM,CAAC,OAAO,CAAC,KAAK,GAAG,KAAK,CAAC;AAE7B,kBAAe,KAAK,CAAC"}
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/delay/index.ts"],"names":[],"mappings":"AAAA,YAAY,CAAC;;AAEb;;;;;;IAMI;AAEJ,SAAgB,KAAK,CAAE,EAAW;IACjC,OAAO,IAAI,OAAO,CAAC,CAAC,OAAa,EAAE,EAAE;QACpC,OAAO,UAAU,CAAC,OAAO,EAAE,EAAE,CAAC,CAAC;IAChC,CAAC,CAAC,CAAC;AACJ,CAAC;AAJD,sBAIC;AAED,MAAM,CAAC,OAAO,CAAC,KAAK,GAAG,KAAK,CAAC;AAE7B,kBAAe,KAAK,CAAC"}

lib/intval/index.js

@@ -11,7 +11,7 @@ const db = require('../db');
 const log = require('../log')('intval');
 const storage = __importStar(require("node-persist"));
 const fs_extra_1 = require("fs-extra");
-require("../delay");
+const delay_1 = require("../delay");
 let Gpio;
 try {
     Gpio = require('onoff').Gpio;
@@ -52,9 +52,15 @@ class Intval {
         };
         this._release = {
             min: 20,
-            seq: 1000
+            seq: 1000,
+            time: 0,
+            active: false
+        };
+        this._micro = {
+            time: 0,
+            primed: false,
+            delay: 10 // delay after stop signal before stopping motors
         };
-        this._microDelay = 10; // delay after stop signal before stopping motors
         this._pin = {};
         this._state = {};
         this._init();
@@ -64,21 +70,7 @@ class Intval {
      */
     async _init() {
         let dirExists;
-        try {
+        const storateOptions = {
-            dirExists = await fs_extra_1.exists(this.STATE_DIR);
-        }
-        catch (err) {
-            log.error('init', `Error locating state directory ${this.STATE_DIR}`);
-        }
-        if (!dirExists) {
-            try {
-                await fs_extra_1.mkdir(this.STATE_DIR);
-            }
-            catch (err) {
-                log.error('init', `Error creating state directory ${this.STATE_DIR}`);
-            }
-        }
-        storage.init({
             dir: this.STATE_DIR,
             stringify: JSON.stringify,
             parse: JSON.parse,
@@ -87,22 +79,56 @@ class Intval {
             continuous: true,
             interval: false,
             ttl: false,
-        }).then(this._restoreState).catch((err) => {
+        };
-            log.warn('init', err);
+        try {
+            dirExists = await fs_extra_1.pathExists(this.STATE_DIR);
+        }
+        catch (err) {
+            log.error('_init', `Error locating state directory ${this.STATE_DIR}`);
+        }
+        if (!dirExists) {
+            try {
+                await fs_extra_1.mkdir(this.STATE_DIR);
+            }
+            catch (err) {
+                log.error('_init', `Error creating state directory ${this.STATE_DIR}`);
+            }
+        }
+        try {
+            await storage.init(storateOptions);
+        }
+        catch (err) {
+            log.error('_init', err);
+        }
+        try {
+            await this._restoreState();
+        }
+        catch (err) {
+            log.warn('_init', err);
             this.reset();
             this._declarePins();
-        });
+        }
-        process.on('SIGINT', this._undeclarePins);
+        process.on('SIGINT', this._undeclarePins.bind(this));
-        process.on('uncaughtException', this._undeclarePins);
+        process.on('uncaughtException', this._undeclarePins.bind(this));
     }
     /**
      * Restore the state from the storage object
      */
-    _restoreState() {
+    async _restoreState() {
-        storage.getItem('_state', 'test').then(this._setState).catch((err) => {
+        let data;
-            this._setState();
+        try {
+            data = await storage.getItem('_state');
+        }
+        catch (err) {
             log.error('_restoreState', err);
-        });
+        }
+        try {
+            this._setState(data);
+        }
+        catch (err) {
+            log.error('_restoreState', err);
+            this._setState();
+        }
         this._declarePins();
     }
     /**
@@ -127,14 +153,6 @@ class Intval {
                 current: {},
                 cb: () => { }
             },
-            release: {
-                time: 0,
-                active: false //is pressed
-            },
-            micro: {
-                time: 0,
-                primed: false //is ready to stop frame
-            },
             counter: 0,
             sequence: false
         };
@@ -144,11 +162,12 @@ class Intval {
      * Store the state object.
      */
     _storeState() {
-        storage.setItem('_state', this._state)
+        try {
-            .then(() => { })
+            storage.setItem('_state', this._state);
-            .catch((err) => {
+        }
+        catch (err) {
             log.error('_storeState', err);
-        });
+        }
     }
     /**
      * (internal function) Declares all Gpio pins that will be used.
@@ -247,7 +266,7 @@ class Intval {
     * @param {integer} 	val 	Current value of the pin
     *
     */
-    _watchMicro(err, val) {
+    async _watchMicro(err, val) {
         const now = +new Date();
         if (err) {
             log.error('_watchMicro', err);
@@ -255,9 +274,9 @@ class Intval {
         //log.info(`Microswitch val: ${val}`)
         //determine when to stop
         if (val === 0 && this._state.frame.active) {
-            if (!this._state.micro.primed) {
+            if (!this._micro.primed) {
-                this._state.micro.primed = true;
+                this._micro.primed = true;
-                this._state.micro.time = now;
+                this._micro.time = now;
                 log.info('Microswitch primed to stop motor');
             }
         }
@@ -265,9 +284,8 @@ class Intval {
             if (this._state.micro.primed && !this._state.micro.paused && (now - this._state.frame.start) > this._frame.open) {
                 this._state.micro.primed = false;
                 this._state.micro.time = 0;
-                setTimeout(() => {
+                await delay_1.delay(this._micro.delay);
                 this._stop();
-                }, this._microDelay);
             }
         }
     }
@@ -277,7 +295,7 @@ class Intval {
     *
     * 1) If closed, start timer.
     * 2) If opened, check timer AND
-    * 3) If `press` (`now - this._state.release.time`) greater than minimum and less than `this._release.seq`, start frame
+    * 3) If `press` (`now - this._release.time`) greater than minimum and less than `this._release.seq`, start frame
     * 4) If `press` greater than `this._release.seq`, start sequence
     *
     * Button + 10K ohm resistor
@@ -298,34 +316,39 @@ class Intval {
         if (val === 0) {
             //closed
             if (this._releaseClosedState(now)) {
-                this._state.release.time = now;
+                this._release.time = now;
-                this._state.release.active = true; //maybe unncecessary 
+                this._release.active = true; //maybe unncecessary 
             }
         }
         else if (val === 1) {
             //opened
-            if (this._state.release.active) {
+            if (this._release.active) {
-                press = now - this._state.release.time;
+                press = now - this._release.time;
                 if (press > this._release.min && press < this._release.seq) {
                     this.frame();
                 }
                 else if (press >= this._release.seq) {
-                    this.sequence();
+                    this._sequence();
                 }
                 //log.info(`Release closed for ${press}ms`)
-                this._state.release.time = 0;
+                this._release.time = 0;
-                this._state.release.active = false;
+                this._release.active = false;
             }
         }
     }
+    _sequence() {
+        if (this.sequence) {
+            this._state.sequence = this.sequence();
+        }
+    }
     /**
      *
      */
     _releaseClosedState(now) {
-        if (!this._state.release.active && this._state.release.time === 0) {
+        if (!this._release.active && this._release.time === 0) {
             return true;
         }
-        if (this._state.release.active && (now - this._state.release.time) > (this._release.seq * 10)) {
+        if (this._release.active && (now - this._release.time) > (this._release.seq * 10)) {
             return true;
         }
         return false;
@@ -389,7 +412,7 @@ class Intval {
     * @param {?integer} 	[exposure="null"] 		(optional) Exposure time, 0 = minimum
     *
     */
-    frame(dir = null, exposure = null, cb = () => { }) {
+    async frame(dir = null, exposure = null) {
         if (dir === true || (dir === null && this._state.frame.dir === true)) {
             dir = true;
         }
@@ -402,10 +425,12 @@ class Intval {
         else if (exposure === null) {
             exposure = 0; //default speed
         }
+        this._state.frame.current.exposure = exposure;
+        this._state.frame.current.dir = dir;
         this._state.frame.start = +new Date();
         this._state.frame.active = true;
         this._pin.micro.watch(this._watchMicro);
-        log.info('frame', { dir: dir ? 'forward' : 'backward', exposure: exposure });
+        log.info('frame', { dir: dir ? 'forward' : 'backward', exposure });
         if (dir) {
             this._startFwd();
         }
@@ -415,47 +440,40 @@ class Intval {
         if (exposure !== 0) {
             this._state.frame.paused = true;
             if (dir) {
-                setTimeout(this._pause, this._frame.open);
+                await delay_1.delay(this._frame.open);
-                //log.info('frame', { pausing : time + this._frame.open })
+                this._pause();
-                setTimeout(() => {
+                await delay_1.delay(exposure + this._frame.closed);
                 this._state.frame.paused = false;
                 this._startFwd();
-                }, exposure + this._frame.closed);
             }
             else {
-                setTimeout(this._pause, this._frame.openBwd);
+                await delay_1.delay(this._frame.openBwd);
-                setTimeout(() => {
+                this._pause();
-                    //log.info('frame', 'restarting')
+                await delay_1.delay(exposure + this._frame.closed);
                 this._state.frame.paused = false;
                 this._startBwd();
-                }, exposure + this._frame.closed);
             }
         }
         if (dir) {
             this._state.frame.cb = (len) => {
                 this._state.counter++;
                 this._storeState();
-                cb(len);
             };
         }
         else {
             this._state.frame.cb = (len) => {
                 this._state.counter--;
                 this._storeState();
-                cb(len);
             };
         }
-        this._state.frame.current = {
-            dir: dir,
-            exposure: exposure
-        };
     }
     /**
-     *
+     * Returns the state of the
      */
     status() {
         return this._state;
     }
 }
-module.exports = new Intval();
+exports.default = Intval;
+module.exports = Intval;
 //# sourceMappingURL=index.js.map

lib/sequence/index.js

@@ -5,111 +5,72 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
 Object.defineProperty(exports, "__esModule", { value: true });
 const v4_1 = __importDefault(require("uuid/v4"));
 const log = require('../log')('seq');
-require("../delay");
+const delay_1 = require("../delay");
+const MAX_INTEGER = 2147483647;
 /** Object sequence features */
 class Sequence {
-    constructor() {
+    /**
-        this._state = {
+     * @constructor
-            arr: []
+     *
-        };
+     * Create a sequencer object from class
+     **/
+    constructor(intval) {
         this.active = false;
-        this.paused = false;
+        this.delay = 0;
-        this.frame = false;
-        this.delay = false;
         this.count = 0;
-        this._stop = null;
+        /**
-        this._loop = {
+         * Stop a running sequence and reset counter and delay
-            arr: [],
+         **/
-            count: 0,
-            max: 0
-        };
         this.stop = function () {
             this.active = false;
             this.count = 0;
-            this._state.arr = [];
+            this.delay = 0;
-            this._loop.count = 0;
+        };
-            this._loop.max = 0;
+        this.intval = intval;
-            this._loop.arr = [];
+        this.intval.sequence = function () {
-            if (this._stop)
+            if (this.active) {
-                this._stop();
+                this.stop();
-            this._stop = null;
+                return false;
+            }
+            else {
+                this.start();
+                return true;
+            }
         };
     }
     /**
      * Start running a "sequence" of frames. Shoots a continuous sequence
      * of single frames with a delay in between each one.
      **/
-    start(options, cb) {
+    async start(options) {
-        if (this._state.active) {
+        let len = typeof options.len !== 'undefined' ? options.len : MAX_INTEGER;
-            return false;
+        let multiple = typeof options.multiple !== 'undefined' ? options.multiple : 1;
-        }
-        this.active = true;
-        this.count = 0;
-        if (options.arr) {
-            this._state.arr = options.arr;
-        }
-        if (options.loop) {
-            this._loop.arr = options.loop;
-            this._loop.count = 0;
-        }
-        if (options.maxLoop) {
-            this._loop.max = options.maxLoop;
-        }
-        else {
-            this._loop.max = 0;
-        }
-        this._stop = cb;
-        this.step();
         this.id = v4_1.default();
-        return this.id;
+        this.delay = typeof options.delay !== 'undefined' ? options.delay : 0;
-    }
-    setStop() {
-        this.active = false;
-    }
-    pause() {
-        this.paused = true;
-    }
-    resume() {
-        this.paused = false;
-        this.step();
-    }
-    step() {
-        if (this.active && !this.paused) {
-            if (this._state.arr.length > 0) {
-                if (this.count > this._state.arr.length - 1) {
-                    return this.stop();
-                }
-                log.info('step', { count: this.count, id: this._state.id });
-                return this._state.arr[this.count](() => {
-                    this.count++;
-                    this.step();
-                });
-            }
-            else if (this._loop.arr.length > 0) {
-                if (this.count > this._loop.arr.length - 1) {
         this.count = 0;
-                    this._loop.count++;
+        for (let i = 0; i < len; i++) {
-                }
+            if (multiple > 1) {
-                if (this._loop.max > 0 && this._loop.count > this._loop.max) {
+                for (let x = 0; x < multiple; x++) {
-                    return this.stop();
+                    await this.intval.frame();
-                }
+                    log.info({ id: this.id, count: this.count });
-                log.info('step', { count: this.count, id: this.id });
-                return this._loop.arr[this.count](() => {
                     this.count++;
-                    this.step();
+                }
-                });
             }
             else {
-                return this.stop();
+                await this.intval.frame();
+                log.info({ id: this.id, count: this.count });
+                this.count++;
+            }
+            if (this.delay > 0) {
+                await delay_1.delay(this.delay);
+            }
+            if (!this.active) {
+                break;
             }
         }
-        else if (this.paused) {
+        this.stop();
-            log.info('step', 'Sequence paused', { loop: this._loop.count, count: this.count });
-        }
-        else if (!this.active) {
-            log.info('step', 'Sequence stopped', { loop: this._loop.count, count: this.count });
     }
 }
-}
+exports.Sequence = Sequence;
-module.exports = new Sequence();
+module.exports = Sequence;
 //# sourceMappingURL=index.js.map

lib/sequence/index.js.map

@@ -1 +1 @@
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src/delay/index.ts

@@ -8,7 +8,7 @@
  * @returns {Promise} Promise to resolve after timeout
  **/
 
-function delay (ms : number) {
+export function delay (ms : number) {
 	return new Promise((resolve : any) => {
 		return setTimeout(resolve, ms);
 	});

src/intval/index.ts

@@ -3,8 +3,8 @@
 const db = require('../db');
 const log = require('../log')('intval');
 import * as storage from 'node-persist';
-import { exists, mkdir } from 'fs-extra';
+import { pathExists, mkdir } from 'fs-extra';
-import '../delay';
+import { delay } from '../delay';
 
 let Gpio : any
 try {
@@ -15,7 +15,7 @@ try {
 }
 
 
-const PINS = {
+const PINS : any = {
 	fwd : {
 		pin : 13,
 		dir : 'out'
@@ -51,7 +51,8 @@ interface Entry {
 }
 
 /** class representing the intval3 features */
-class Intval {
+export default class Intval {
+
 	private STATE_DIR : string = '~/state';
 
 	private _frame : any = {
@@ -62,12 +63,21 @@ class Intval {
 	}
 	private _release : any = {
 		min : 20,
-		seq : 1000
+		seq : 1000,
+		time : 0,
+		active : false
 	}
-	private _microDelay : number = 10; // delay after stop signal before stopping motors
+
+	private _micro : any = {
+		time : 0,
+		primed : false, //is ready to stop frame
+		delay : 10// delay after stop signal before stopping motors
+	}
+
 	private _pin : any = {};
 	private _state : any = {};
 
+	public sequence : any;
 
 	constructor() {
 		this._init();
@@ -79,22 +89,7 @@ class Intval {
 
 	private async _init () {
 		let dirExists : boolean;
-		
+		const storateOptions = {
-		try {
-			dirExists = await exists(this.STATE_DIR);
-		} catch (err) {
-		 	log.error('init', `Error locating state directory ${this.STATE_DIR}`);
-		}
-
-		if (!dirExists) {
-			try {
-				await mkdir(this.STATE_DIR);
-			} catch (err) {
-				log.error('init', `Error creating state directory ${this.STATE_DIR}`)
-			}
-		}
-		
-		storage.init({
 			dir: this.STATE_DIR,
 			stringify: JSON.stringify,
 			parse: JSON.parse,
@@ -105,25 +100,60 @@ class Intval {
 			ttl: false, // ttl* [NEW], can be true for 24h default or a number in MILLISECONDS
 			//expiredInterval: 2 * 60 * 1000, // [NEW] every 2 minutes the process will clean-up the expired cache
 		    //forgiveParseErrors: false // [NEW]
-		}).then(this._restoreState).catch((err) => { 
+		}
-			log.warn('init', err) 
+		
+		try {
+			dirExists = await pathExists(this.STATE_DIR);
+		} catch (err) {
+		 	log.error('_init', `Error locating state directory ${this.STATE_DIR}`);
+		}
+
+		if (!dirExists) {
+			try {
+				await mkdir(this.STATE_DIR);
+			} catch (err) {
+				log.error('_init', `Error creating state directory ${this.STATE_DIR}`);
+			}
+		}
+		
+		try {
+			await storage.init(storateOptions);
+		} catch (err) {
+			log.error('_init', err);
+		}
+
+		try {
+			await this._restoreState();
+		} catch (err) { 
+			log.warn('_init', err) ;
 			this.reset();
 			this._declarePins();
-		})
+		}
 
-		process.on('SIGINT', this._undeclarePins);
+		process.on('SIGINT', this._undeclarePins.bind(this));
-		process.on('uncaughtException', this._undeclarePins);
+		process.on('uncaughtException', this._undeclarePins.bind(this));
 	}
 
 	/**
 	 * Restore the state from the storage object
 	 */
 
-	private _restoreState () {
+	private async _restoreState () {
-		storage.getItem('_state', 'test').then(this._setState).catch((err) => {
+		let data : any;
-			this._setState();
+
+		try {
+			data = await storage.getItem('_state');
+		} catch (err) {
 			log.error('_restoreState', err);
-		})
+		}
+
+		try {
+			this._setState(data);
+		} catch (err) {
+			log.error('_restoreState', err);
+			this._setState();
+		}
+
 		this._declarePins();
 	}
 
@@ -150,14 +180,6 @@ class Intval {
 				current : {}, //current settings
 				cb : () => {}
 			},
-			release : {
-				time: 0,
-				active : false //is pressed
-			},
-			micro : {
-				time : 0,
-				primed : false //is ready to stop frame
-			},
 			counter : 0,
 			sequence : false
 		}
@@ -169,11 +191,11 @@ class Intval {
 	 */
 
 	private _storeState () {
-		storage.setItem('_state', this._state)
+		try {
-			.then(() => {})
+			storage.setItem('_state', this._state);
-			.catch((err) => {
+		} catch (err) {
 			log.error('_storeState', err);
-			})
+		}
 	}
 
 	/**
@@ -181,7 +203,7 @@ class Intval {
 	 */
 
 	private _declarePins () {
-		let pin;
+		let pin : any;
 		for (let p in PINS) {
 			pin = PINS[p];
 			if (pin.edge) this._pin[p] = new Gpio(pin.pin, pin.dir, pin.edge);
@@ -290,7 +312,7 @@ class Intval {
 	*
 	*/
 
-	private _watchMicro (err : Error, val : number) {
+	private async _watchMicro (err : Error, val : number) {
 		const now : number = +new Date();
 		if (err) {
 			log.error('_watchMicro', err);
@@ -298,18 +320,17 @@ class Intval {
 		//log.info(`Microswitch val: ${val}`)
 		//determine when to stop
 		if (val === 0 && this._state.frame.active) {
-			if (!this._state.micro.primed) {
+			if (!this._micro.primed) {
-				this._state.micro.primed = true;
+				this._micro.primed = true;
-				this._state.micro.time = now;
+				this._micro.time = now;
 				log.info('Microswitch primed to stop motor');
 			}
 		} else if (val === 1 && this._state.frame.active) {
 			if (this._state.micro.primed && !this._state.micro.paused && (now - this._state.frame.start) > this._frame.open) {
 				this._state.micro.primed = false;
 				this._state.micro.time = 0;
-				setTimeout( () => {
+				await delay(this._micro.delay)
 				this._stop();
-				}, this._microDelay);
 			}
 		}
 	}
@@ -320,7 +341,7 @@ class Intval {
 	*
 	* 1) If closed, start timer.
 	* 2) If opened, check timer AND
-	* 3) If `press` (`now - this._state.release.time`) greater than minimum and less than `this._release.seq`, start frame
+	* 3) If `press` (`now - this._release.time`) greater than minimum and less than `this._release.seq`, start frame
 	* 4) If `press` greater than `this._release.seq`, start sequence
 	*
 	* Button + 10K ohm resistor 
@@ -342,34 +363,40 @@ class Intval {
 		if (val === 0) {
 			//closed
 			if (this._releaseClosedState(now)) {
-				this._state.release.time = now;
+				this._release.time = now;
-				this._state.release.active = true; //maybe unncecessary 
+				this._release.active = true; //maybe unncecessary 
 			}
 		} else if (val === 1) {
 			//opened
-			if (this._state.release.active) {
+			if (this._release.active) {
-				press = now - this._state.release.time;
+				press = now - this._release.time;
 				if (press > this._release.min && press < this._release.seq) {
 					this.frame();
 				} else if (press >= this._release.seq) {
-					this.sequence();
+					this._sequence();
 				}
 				//log.info(`Release closed for ${press}ms`)
-				this._state.release.time = 0;
+				this._release.time = 0;
-				this._state.release.active = false;
+				this._release.active = false;
 			}
 		}
 	}
 
+	private _sequence () {
+		if (this.sequence) {
+			this._state.sequence = this.sequence()
+		}
+	}
+
 	/**
 	 * 
 	 */
 
 	private _releaseClosedState (now : number) {
-		if (!this._state.release.active && this._state.release.time === 0) {
+		if (!this._release.active && this._release.time === 0) {
 			return true;
 		}
-		if (this._state.release.active && (now - this._state.release.time) > (this._release.seq * 10)) {
+		if (this._release.active && (now - this._release.time) > (this._release.seq * 10)) {
 			return true;
 		}
 		return false;
@@ -445,7 +472,7 @@ class Intval {
 	*
 	*/
 
-	public frame (dir : boolean = null, exposure : number = null, cb : Function = () => {}) {
+	public async frame (dir : boolean = null, exposure : number = null) {
 		if (dir === true || (dir === null && this._state.frame.dir === true) ) {
 			dir =  true;
 		} else {
@@ -465,42 +492,46 @@ class Intval {
 		this._state.frame.active = true;
 		this._pin.micro.watch(this._watchMicro);
 
-		log.info('frame', {dir : dir ? 'forward' : 'backward', exposure : exposure});
+		log.info('frame', {dir : dir ? 'forward' : 'backward', exposure });
 
 		if (dir) {
 			this._startFwd();
 		} else {
 			this._startBwd();
 		}
+
 		if (exposure !== 0) {
 			this._state.frame.paused = true;
 			if (dir) {
-				setTimeout(this._pause, this._frame.open);
+				await delay(this._frame.open)
-				//log.info('frame', { pausing : time + this._frame.open })
+
-				setTimeout( () => {
+				this._pause()
-					this._state.frame.paused = false;
+				
-					this._startFwd();
+				await delay(exposure + this._frame.closed)
-				}, exposure + this._frame.closed);
+
+				this._state.frame.paused = false
+				this._startFwd()
 			} else {
-				setTimeout(this._pause, this._frame.openBwd);
+
-				setTimeout( () => {
+				await delay(this._frame.openBwd)
-					//log.info('frame', 'restarting')
+
+				this._pause()
+				
+				await delay(exposure + this._frame.closed)
+
 				this._state.frame.paused = false;
-					this._startBwd();
+				this._startBwd()
-				}, exposure + this._frame.closed);
 			}
 		}
 		if (dir) {
 			this._state.frame.cb = (len : number) => {
 				this._state.counter++;
 				this._storeState();
-				cb(len);
 			}
 		} else {
 			this._state.frame.cb = (len : number) => {
 				this._state.counter--;
 				this._storeState();
-				cb(len);
 			}
 		}
 	}
@@ -514,6 +545,4 @@ class Intval {
 	}
 }
 
-module.exports = new Intval();
+module.exports = Intval
-
-export default Intval;

src/sequence/index.ts

@@ -2,135 +2,99 @@
 
 import uuid from 'uuid/v4';
 const log = require('../log')('seq');
-import '../delay';
+import { delay } from '../delay';
 
 const MAX_INTEGER = 2147483647;
 
 interface Options {
 	len? : number;
+	multiple? : number;
+	delay? : number;
+}
+
+interface Loop {
+	count : number;
+	max : number;
+	delay : number;
 }
 
 /** Object sequence features */
-class Sequence {
+export class Sequence {
-	public _state : any = {
+	private id : string
-		arr : []
+
+	private active : boolean = false
+
+	private delay : number = 0
+	private count : number = 0
+
+	private intval : any
+
+	/**
+	 * @constructor
+	 *
+	 * Create a sequencer object from class
+	 **/
+
+	constructor (intval : any) {
+		this.intval = intval
+		this.intval.sequence = function () {
+			if (this.active) {
+				this.stop()
+				return false
+			} else {
+				this.start()
+				return true
+			}
 		}
-	private id : string;
-
-	private active : boolean = false;
-	private paused : boolean = false;
-
-	private frame : boolean = false;
-	private delay : boolean = false;
-	private count : number = 0;
-
-	private _stop : Function = null;
-
-	public _loop : any = {
-		arr : [],
-		count : 0,
-		max : 0
 	}
 
-	constructor (intval : Intval) {
-
-	}
 	/**
 	 * Start running a "sequence" of frames. Shoots a continuous sequence
 	 * of single frames with a delay in between each one.
 	 **/
-	public startOld (options : any, cb : Function) {
-		if (this._state.active) {
-			return false
-		}
-
-		this.active = true
-		this.count = 0
-
-		if (options.arr) {
-			this._state.arr = options.arr
-		}
-
-		if (options.loop) {
-			this._loop.arr = options.loop
-			this._loop.count = 0
-		}
-
-		if (options.maxLoop) {
-			this._loop.max = options.maxLoop
-		} else {
-			this._loop.max = 0
-		}
-		this._stop = cb
-		this.step() 
-		this.id = uuid()
-		return this.id
-	}
 
 	public async start (options : Options) {
+		let len : number = typeof options.len !== 'undefined' ? options.len : MAX_INTEGER
+		let multiple : number = typeof options.multiple !== 'undefined' ? options.multiple : 1
 		
+		this.id = uuid()
+		this.delay = typeof options.delay !== 'undefined' ? options.delay : 0
+		this.count = 0
+
+		for (let i = 0; i < len; i++) {
+			if (multiple > 1) {
+				for (let x = 0; x < multiple; x++) {
+					await this.intval.frame()
+					log.info({ id : this.id, count : this.count })
+					this.count++
+				}
+			} else {
+				await this.intval.frame()
+				log.info({ id : this.id, count : this.count })
+				this.count++
 			}
 
-	public setStop () {
+			if (this.delay > 0) {
-		this.active = false
+				await delay(this.delay)
 			}
 
+			if (!this.active) {
+				break
+			}
+		}
+
+		this.stop()
+	}
+
+	/**
+	 * Stop a running sequence and reset counter and delay
+	 **/
 	public stop = function () {
 		this.active = false
 		this.count = 0
-		this._state.arr = []
+		this.delay = 0
-
-		this._loop.count = 0
-		this._loop.max = 0
-		this._loop.arr = []
-
-		if (this._stop) this._stop()
-
-		this._stop = null
-	}
-
-	public pause () {
-		this.paused = true
-	}
-
-	public resume () {
-		this.paused = false
-		this.step()
-	}
-
-	public step () {
-		if (this.active && !this.paused) {
-			if (this._state.arr.length > 0) {
-				if (this.count > this._state.arr.length - 1) {
-					return this.stop()
-				}
-				log.info('step', { count : this.count, id : this._state.id })
-				return this._state.arr[this.count](() => {
-					this.count++
-					this.step()
-				})
-			} else if (this._loop.arr.length > 0) {
-				if (this.count > this._loop.arr.length - 1) {
-					this.count = 0
-					this._loop.count++
-				}
-				if (this._loop.max > 0 && this._loop.count > this._loop.max) {
-					return this.stop()
-				}
-				log.info('step', { count : this.count, id : this.id })
-				return this._loop.arr[this.count](() => {
-					this.count++
-					this.step()
-				})
-			} else{
-				return this.stop()
-			}
-		} else if (this.paused) {
-			log.info('step', 'Sequence paused', { loop : this._loop.count, count : this.count })
-		} else if (!this.active) {
-			log.info('step', 'Sequence stopped', { loop : this._loop.count, count : this.count })
-		}
 	}
 }
 
-module.exports = new Sequence();
+module.exports = Sequence
+