CurieIMU tap/double example, JIRA-508

Author: jysholar

libraries/CurieIMU/examples/TapDetect/TapDetect.ino

@@ -37,13 +37,10 @@ void setup() {
   // Reduce threshold to allow detection of weaker taps (>= 750mg)
   CurieIMU.setDetectionThreshold(CURIE_IMU_TAP, 750); // (750mg)
 
-  // Set the time window for 2 taps to be registered as a double-tap (<= 250 milliseconds)
-  CurieIMU.setDetectionDuration(CURIE_IMU_DOUBLE_TAP, 250);
-
   // Enable Double-Tap detection
-  CurieIMU.interrupts(CURIE_IMU_DOUBLE_TAP);
+  CurieIMU.interrupts(CURIE_IMU_TAP);
 
-  Serial.println("IMU initialisation complete, waiting for events...");
+  Serial.println("IMU initialization complete, waiting for events...");
 }
 
 void loop() {
@@ -53,18 +50,18 @@ void loop() {
 
 static void eventCallback()
 {
-  if (CurieIMU.getInterruptStatus(CURIE_IMU_DOUBLE_TAP)) {
+  if (CurieIMU.getInterruptStatus(CURIE_IMU_TAP)) {
     if (CurieIMU.tapDetected(X_AXIS, NEGATIVE))
-      Serial.println("Double Tap detected on negative X-axis");
+      Serial.println("Tap detected on negative X-axis");
     if (CurieIMU.tapDetected(X_AXIS, POSITIVE))
-      Serial.println("Double Tap detected on positive X-axis");
+      Serial.println("Tap detected on positive X-axis");
     if (CurieIMU.tapDetected(Y_AXIS, NEGATIVE))
-      Serial.println("Double Tap detected on negative Y-axis");
+      Serial.println("Tap detected on negative Y-axis");
     if (CurieIMU.tapDetected(Y_AXIS, POSITIVE))
-      Serial.println("Double Tap detected on positive Y-axis");
+      Serial.println("Tap detected on positive Y-axis");
     if (CurieIMU.tapDetected(Z_AXIS, NEGATIVE))
-      Serial.println("Double Tap detected on negative Z-axis");
+      Serial.println("Tap detected on negative Z-axis");
     if (CurieIMU.tapDetected(Z_AXIS, POSITIVE))
-      Serial.println("Double Tap detected on positive Z-axis");
+      Serial.println("Tap detected on positive Z-axis");
   }
-}
+}

libraries/CurieIMU/examples/TapDoubleDetect/TapDoubleDetect.ino

@@ -0,0 +1,70 @@
+/*
+   Copyright (c) 2015 Intel Corporation.  All rights reserved.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+/*
+   This sketch example demonstrates how the BMI160 accelerometer on the
+   Intel(R) Curie(TM) module can be used to detect tap events
+*/
+
+#include "CurieIMU.h"
+
+void setup() {
+  Serial.begin(9600);
+
+  // Initialise the IMU
+  CurieIMU.begin();
+  CurieIMU.attachInterrupt(eventCallback);
+
+  // Increase Accelerometer range to allow detection of stronger taps (< 4g)
+  CurieIMU.setAccelerometerRange(4);
+
+  // Reduce threshold to allow detection of weaker taps (>= 750mg)
+  CurieIMU.setDetectionThreshold(CURIE_IMU_DOUBLE_TAP, 750); // (750mg)
+
+  // Set the quite time window for 2 taps to be registered as a double-tap (Gap time between taps <= 1000 milliseconds)
+  CurieIMU.setDetectionDuration(CURIE_IMU_DOUBLE_TAP, 1000);
+
+  // Enable Double-Tap detection
+  CurieIMU.interrupts(CURIE_IMU_DOUBLE_TAP);
+
+  Serial.println("IMU initialization complete, waiting for events...");
+}
+
+void loop() {
+  // nothing happens in the loop because all the action happens
+  // in the callback function.
+}
+
+static void eventCallback()
+{
+  if (CurieIMU.getInterruptStatus(CURIE_IMU_DOUBLE_TAP)) {
+    if (CurieIMU.tapDetected(X_AXIS, NEGATIVE))
+      Serial.println("Double Tap detected on negative X-axis");
+    if (CurieIMU.tapDetected(X_AXIS, POSITIVE))
+      Serial.println("Double Tap detected on positive X-axis");
+    if (CurieIMU.tapDetected(Y_AXIS, NEGATIVE))
+      Serial.println("Double Tap detected on negative Y-axis");
+    if (CurieIMU.tapDetected(Y_AXIS, POSITIVE))
+      Serial.println("Double Tap detected on positive Y-axis");
+    if (CurieIMU.tapDetected(Z_AXIS, NEGATIVE))
+      Serial.println("Double Tap detected on negative Z-axis");
+    if (CurieIMU.tapDetected(Z_AXIS, POSITIVE))
+      Serial.println("Double Tap detected on positive Z-axis");
+  }
+}