Added fuser example script

Author: scaryghost

examples/fuser.js

@@ -0,0 +1,52 @@
+var MetaWear = require('../index.js')//require('metawear');
+var ref = require('ref')
+
+async function mainAsync(mac) {
+  var device = await new Promise((resolve, reject) => MetaWear.discoverByAddress(mac.toLowerCase(), d => resolve(d)))
+  await new Promise((resolve, reject) => {
+    device.connectAndSetUp(error => {
+      if(error == null) resolve(null)
+      else reject(error)
+    })
+  })
+
+  let acc = MetaWear.mbl_mw_acc_get_acceleration_data_signal(device.board)
+  let gyro = MetaWear.mbl_mw_gyro_bmi160_get_rotation_data_signal(device.board)
+
+  let fuser = await new Promise((resolve, reject) => {
+    //ArrayType(ref.refType(AnonymousDataSignal));
+    console.log("creating fuser? ")
+    console.log(acc)
+    console.log(gyro)
+    MetaWear.mbl_mw_dataprocessor_fuser_create(acc, new MetaWear.ArrayDataSignalP([gyro]), 1, ref.NULL, MetaWear.FnVoid_VoidP_DataProcessorP.toPointer((ctx, pointer) => {
+      if (!pointer) {
+        reject("Failed to create fuser")
+      } else {
+        resolve(pointer);
+      }
+    }))
+    console.log("fuser created?")
+  })
+
+  MetaWear.mbl_mw_datasignal_subscribe(fuser, ref.NULL, MetaWear.FnVoid_VoidP_DataP.toPointer((ctx, pointer) => {
+    var data = pointer.deref();
+    var values = data.parseValue({'nElem': 2});
+
+    let acc = values[0]
+    let gyro = values[1]
+
+    console.log(`acc: (${acc.x},${acc.y},${acc.z}), gyro; (${gyro.x},${gyro.y},${gyro.z})`)
+  }))
+  
+  MetaWear.mbl_mw_gyro_bmi160_enable_rotation_sampling(device.board)
+  MetaWear.mbl_mw_acc_enable_acceleration_sampling(device.board)
+
+  MetaWear.mbl_mw_gyro_bmi160_start(device.board)
+  MetaWear.mbl_mw_acc_start(device.board)
+
+  process.openStdin().addListener("data", data => {
+    MetaWear.mbl_mw_debug_reset(device.board)
+  })
+}
+
+mainAsync(process.argv[2])

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "metawear",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "author": "Stephen Schiffli <stephen@mbientlab.com>",
   "license": "SEE LICENSE IN LICENSE",
   "description": "Official JavaScript SDK for MetaWear",