add support for node 14, drop support for node 6 (#76)

* drop support for node 6

* update dependencies

* add support for node 14

.travis.yml

@@ -1,16 +1,16 @@
 language: node_js
 node_js:
+  - "14"
   - "12"
   - "10"
   - "8"
-  - "6"
 before_script:
   - npm install -g grunt-cli
 env:
-  - CXX=g++-4.8
+  - CXX=g++-6
 addons:
   apt:
     sources:
       - ubuntu-toolchain-r-test
     packages:
-      - g++-4.8
+      - g++-6

README.md

@@ -2,7 +2,7 @@
 [Johnny-Five](http://johnny-five.io) IO Plugin for the BeagleBone Black,
 BeagleBone Green Wireless and PocketBeagle.
 
-BeagleBone-IO supports Node.js versions 6, 8, 10 and 12.
+BeagleBone-IO supports Node.js versions 8, 10, 12 and 14.
 
 ## Contents
 
@@ -20,28 +20,10 @@ BeagleBone-IO supports Node.js versions 6, 8, 10 and 12.
 
 ## News & Updates
 
-### September-2019: BeagleBone-IO v4.0.1
+### May-2020: BeagleBone-IO v4.1.0
 
-* Support for Node.js v4 and v9 removed
-* Support for Node.js 12 added
-
-### April-2018: BeagleBone-IO v4.0.0
-
-* Support for Node.js v0.10, v0.12, v5 and v7 removed
-* Support for Node 10 added
-
-### January-2018: BeagleBone-IO v3.0.0
-
-BeagleBone-IO v3.0.0 released with the following features:
-
-* Support for the [BeagleBone Green Wireless](http://wiki.seeed.cc/SeeedStudio_BeagleBone_Green_Wireless/)
-* Support for Linux Kernel 4.11+
-* Root privileges no longer required when running on Linux Kernel 4.11+
-
-### November-2017: PocketBeagle Support
-
-BeagleBone-IO v2.3.0 adds support for the
-[PocketBeagle](https://beagleboard.org/pocket).
+* Support for Node.js 6 removed
+* Support for Node.js 14 added
 
 ## Installation
 

lib/pwm-output.js

@@ -83,7 +83,7 @@ function PwmOutput(pinData, period) {
   matches = glob.sync(pwmChannelPattern);
   if (matches.length === 0) {
     // The pwm channel hasn't been exported yet, so export it.
-    fs.writeFileSync(pwmChipPath + '/export', channel, FS_OPTIONS);
+    fs.writeFileSync(pwmChipPath + '/export', '' + channel, FS_OPTIONS);
     matches = glob.sync(pwmChannelPattern);
   }
 
@@ -105,10 +105,10 @@ function PwmOutput(pinData, period) {
   ]);
 
   this.period = period;
-  fs.writeFileSync(pwmChannelPath + '/period', period, FS_OPTIONS);
+  fs.writeFileSync(pwmChannelPath + '/period', '' + period, FS_OPTIONS);
 
   this.enableFd = fs.openSync(pwmChannelPath + '/enable', 'r+');
-  fs.writeSync(this.enableFd, 1, FS_OPTIONS);
+  fs.writeSync(this.enableFd, '1', FS_OPTIONS);
 
   this.dutyCycleFd = fs.openSync(pwmChannelPath + '/duty_cycle', 'r+');
 
@@ -124,13 +124,13 @@ PwmOutput.prototype.pwmWrite = function (dutyCycle) {
   // issue.
 
   if (dutyCycle < 10) {
-    fs.writeSync(this.enableFd, 0, FS_OPTIONS);
+    fs.writeSync(this.enableFd, '0', FS_OPTIONS);
   }
 
-  fs.writeSync(this.dutyCycleFd, dutyCycle, FS_OPTIONS);
+  fs.writeSync(this.dutyCycleFd, '' + dutyCycle, FS_OPTIONS);
 
   if (dutyCycle < 10) {
-    fs.writeSync(this.enableFd, 1, FS_OPTIONS);
+    fs.writeSync(this.enableFd, '1', FS_OPTIONS);
   }
 };
 

package.json

@@ -11,7 +11,7 @@
     "url": "https://github.com/julianduque/beaglebone-io"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   },
   "keywords": [
     "firmata",
@@ -25,17 +25,17 @@
   },
   "homepage": "https://github.com/julianduque/beaglebone-io",
   "devDependencies": {
-    "grunt": "^1.0.4",
+    "grunt": "^1.1.0",
     "grunt-contrib-jshint": "^2.1.0",
-    "grunt-contrib-nodeunit": "^2.0.0",
+    "grunt-contrib-nodeunit": "^2.1.0",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-jsbeautifier": "^0.2.13",
     "nodeunit": "^0.11.3",
-    "rewire": "^4.0.1",
-    "sinon": "^7.4.2"
+    "rewire": "^5.0.0",
+    "sinon": "^9.0.2"
   },
   "dependencies": {
-    "linux-io": "^1.0.4",
-    "glob": "^7.1.4"
+    "linux-io": "^1.1.0",
+    "glob": "^7.1.6"
   }
 }