From ee7af6730e29fb800f51bc465e1dceae088cc8e0 Mon Sep 17 00:00:00 2001
From: David Kebler <d@kebler.net>
Date: Wed, 18 Jan 2017 20:31:53 -0800
Subject: [PATCH] adding interrupt class for gpio pins on RPi and the like

---
 lib/amodule.js                              |  1 -
 lib/interrupt.js                            | 32 +++++++++++++++++++++
 package.json                                | 12 ++++----
 test/apromise.test.js.off                   | 19 ++++++++++++
 test/{amodule.test.js => interrupt.test.js} | 10 +++----
 5 files changed, 63 insertions(+), 11 deletions(-)
 delete mode 100644 lib/amodule.js
 create mode 100644 lib/interrupt.js
 create mode 100644 test/apromise.test.js.off
 rename test/{amodule.test.js => interrupt.test.js} (78%)

diff --git a/lib/amodule.js b/lib/amodule.js
deleted file mode 100644
index 6615b2d..0000000
--- a/lib/amodule.js
+++ /dev/null
@@ -1 +0,0 @@
-module.exports.hello = function (what) { return 'Hello ' + what }
diff --git a/lib/interrupt.js b/lib/interrupt.js
new file mode 100644
index 0000000..b5b2f2b
--- /dev/null
+++ b/lib/interrupt.js
@@ -0,0 +1,32 @@
+'use strict'
+
+const Gpio = require('onoff').Gpio
+
+// **********************************
+
+class Interrupt {
+  // bus is i2c-bus bus object
+  constructor(pin_number, processor, opts = {}) {
+    let dtimeout = opts.debounceTimeout ? opts.debounceTimeout : 200
+    this.pin = new Gpio(pin_number, 'in', 'falling', { debounceTimeout: dtimeout })
+    this.processor = processor
+  }
+
+  init() {
+    this.addListener(this.processor)
+    process.on('SIGINT', function () {
+      this.pin.unexport();
+    })
+
+  }
+
+  addListener(processor) {
+    this.pin.watch((err, value) => {
+      if (err) { return Promise.reject(err) }
+      return processor
+    });
+  }
+
+}
+
+module.exports.Interrupt = Interrupt
diff --git a/package.json b/package.json
index 052efb9..b6be39b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "uci-template-changeme",
+  "name": "uci-interrupt",
   "version": "0.0.1",
-  "description": "A template for a starting a uci package",
+  "description": "a class for adding interrupt processesing via sysfs and gpio pins on Raspberry and similar",
   "main": "index.js",
   "scripts": {
     "testw": "./node_modules/.bin/mocha  --reporter list --recursive --watch",
@@ -11,7 +11,7 @@
   "license": "MIT",
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/uCOMmandIt/uci-pkg-template.git"
+    "url": "git+https://github.com/uCOMmandIt/uci-interrrupt.git"
   },
   "keywords": [
     "node.js",
@@ -21,14 +21,16 @@
     "helpers"
   ],
   "bugs": {
-    "url": "https://github.com/uCOMmandIt/utilities/issues"
+    "url": "https://github.com/uCOMmandIt/uci-interrrupt/issues"
   },
-  "homepage": "https://github.com/uCOMmandIt/utilities#readme",
+  "homepage": "https://github.com/uCOMmandIt/uci-interrrupt#readme",
   "dependencies": {
+    "onoff": "^1.1.1",
     "require-all": "git+https://github.com/dkebler/node-require-all.git#merge"
   },
   "devDependencies": {
     "chai": "^3.5.0",
+    "chai-as-promised": "^6.0.0",
     "codecov": "^1.0.1",
     "istanbul": "^0.4.5",
     "mocha": "^3.2.0"
diff --git a/test/apromise.test.js.off b/test/apromise.test.js.off
new file mode 100644
index 0000000..6fa66b6
--- /dev/null
+++ b/test/apromise.test.js.off
@@ -0,0 +1,19 @@
+'use strict'
+
+const chai = require('chai'),
+  chaiAsPromised = require("chai-as-promised"),
+  lib = require('../')
+
+chai.use(chaiAsPromised);
+
+const expect = chai.expect
+
+describe('Promise Stuff - ', function () {
+
+  it('Can test a promise', function () {
+
+    return expect(lib.apromise).to.eventually.equal('some promise hey')
+    return Promise.resolve().then(() => expect(lib.apromise).to.eventually.equal('some promise hey'))
+
+  })
+})
diff --git a/test/amodule.test.js b/test/interrupt.test.js
similarity index 78%
rename from test/amodule.test.js
rename to test/interrupt.test.js
index 7d681f9..3da57cb 100644
--- a/test/amodule.test.js
+++ b/test/interrupt.test.js
@@ -1,16 +1,16 @@
 'use strict'
 
+const expect = require('chai').expect,
+  lib = require('../')
+
 //time-stamp for use when watching to distinguish reruns in console
 // place in alpha first file only
 let date = new Date(Date.now())
 console.log(date.getMinutes(), "\:", date.getSeconds())
 
-const expect = require('chai').expect,
-  lib = require('../')
+describe('Test a template module  ', function () {
 
-describe('A template module  ', function () {
-
-  it('Should ....', function () {
+  it('Should test all methods', function () {
     expect(lib.hello('Forest Gump')).to.equal('Hello Forest Gump')
   })