avoid exceptions when cape_universal is enabled on the bbb

fivdi · Jun 5, 2016 · e8c3be8 · e8c3be8
1 parent 25b72a7
commit e8c3be8
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diff --git a/History.md b/History.md
@@ -1,3 +1,7 @@
+Unpublished
+===========
+  * avoid exceptions when cape_universal is enabled on the bbb [#50](https://github.com/fivdi/onoff/issues/50)
+
 1.1.0 - May 04 2016
 ===================
   * activeLow option

diff --git a/onoff.js b/onoff.js
@@ -338,6 +338,11 @@ Gpio.prototype.options = function () {
 Gpio.prototype.unexport = function () {
   this.unwatchAll();
   fs.closeSync(this.valueFd);
-  fs.writeFileSync(GPIO_ROOT_PATH + 'unexport', this.gpio);
+  try {
+    fs.writeFileSync(GPIO_ROOT_PATH + 'unexport', this.gpio);
+  } catch (ignore) {
+    // Flow of control always arrives here when cape_universal is enabled on
+    // the bbb.
+  }
 };