Use PINS configuration object to initialize pins

TODO: Separate into file, automatically switching out for different
models

lib/intval/index.js

@@ -11,20 +11,20 @@ try {
 
 const PINS = {
 	fwd : {
-		pin : 4,
+		pin : 13,
 		dir : 'out'
 	},
 	bwd : {
-		pin : 5,
+		pin : 19,
 		dir : 'out'
 	},
 	micro : {
 		pin : 6,
 		dir : 'in',
-		edge : 'rising'
+		edge : 'both'
 	},
 	release : {
-		pin : 7,
+		pin : 5,
 		dir  : 'in',
 		edge : 'both'
 	}
@@ -60,11 +60,13 @@ class Intval {
 	*
 	*/
 	_declarePins () {
-		this._pin.fwd = Gpio(13, 'out')
-		this._pin.bwd = Gpio(19, 'out')
-		this._pin.micro = Gpio(5, 'in', 'rising') //
-		this._pin.release = Gpio(6, 'in', 'both')
-
+		let pin
+		for (let p in PINS) {
+			pin = PINS[p]
+			if (pin.edge) this._pin[p] = Gpio(pin.pin, pin.dir, pin.edge)
+			if (!pin.edge) this._pin[p] = Gpio(pin.pin, pin.dir)
+		}
+		console.dir(this._pin)
 		this._pin.release.watch(this._watchRelease)
 	}
 	/**
@@ -114,6 +116,15 @@ class Intval {
 		this._pin.micro.unwatch()
 		this._state.frame.active = false
 	}
+	/**
+	* Intval._watchMicro() - 
+	* Callback for watching microswitch state changes
+	* Using GPIO 06 on raspberry pi zero w
+	*
+	* @param {object} 	err 	Error object present if problem reading pin
+	* @param {integer} 	val 	Current value of the pin
+	*
+	*/
 	_watchMicro (err, val) {
 		/* Microswitch + 10K ohm resistor */
 		/* 1 = open */
@@ -124,6 +135,19 @@ class Intval {
 		this._state.frame.val = val
 		//determine when to stop
 	}
+	/**
+	* Intval._watchRelease() - 
+	* Callback for watching relese switch state changes
+	* Using GPIO 05 on raspberry pi zero w
+	* * If closed, start timer.
+	* * If opened, check timer AND
+	* * If time closed longer than minimum and less than `this._releaseSequence`, start frame
+	* * If time closed longer than `this._releaseSequence`, start sequence
+	*
+	* @param {object} 	err 	Error object present if problem reading pin
+	* @param {integer} 	val 	Current value of the pin
+	*
+	*/
 	_watchRelease (err, val) {
 		const NOW = +new Date()
 		let press = 0