Arduino 101 CurieIMU Tap detection

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1/*
2
3 * Copyright (c) 2016 Intel Corporation.  All rights reserved.
4
5 * See the bottom of this file for the license terms.
6
7 */
8
9/*
10
11   This sketch example demonstrates how the BMI160 accelerometer on the
12
13   Intel(R) Curie(TM) module can be used to detect tap events
14
15*/
16
17#include "CurieIMU.h"
18
19void setup() {
20
21  Serial.begin(9600); // initialize Serial communication
22
23  while(!Serial) ;    // wait for serial port to connect.
24
25  // Initialise the IMU
26
27  CurieIMU.begin();
28
29  CurieIMU.attachInterrupt(eventCallback);
30
31  // Increase Accelerometer range to allow detection of stronger taps (< 4g)
32
33  CurieIMU.setAccelerometerRange(4);
34
35  // Reduce threshold to allow detection of weaker taps (>= 750mg)
36
37  CurieIMU.setDetectionThreshold(CURIE_IMU_TAP, 750); // (750mg)
38
39  // Enable Double-Tap detection
40
41  CurieIMU.interrupts(CURIE_IMU_TAP);
42
43  Serial.println("IMU initialization complete, waiting for events...");
44}
45
46void loop() {
47
48  // nothing happens in the loop because all the action happens
49
50  // in the callback function.
51}
52
53static void eventCallback()
54{
55
56  if (CurieIMU.getInterruptStatus(CURIE_IMU_TAP)) {
57
58    if (CurieIMU.tapDetected(X_AXIS, NEGATIVE))
59
60      Serial.println("Tap detected on negative X-axis");
61
62    if (CurieIMU.tapDetected(X_AXIS, POSITIVE))
63
64      Serial.println("Tap detected on positive X-axis");
65
66    if (CurieIMU.tapDetected(Y_AXIS, NEGATIVE))
67
68      Serial.println("Tap detected on negative Y-axis");
69
70    if (CurieIMU.tapDetected(Y_AXIS, POSITIVE))
71
72      Serial.println("Tap detected on positive Y-axis");
73
74    if (CurieIMU.tapDetected(Z_AXIS, NEGATIVE))
75
76      Serial.println("Tap detected on negative Z-axis");
77
78    if (CurieIMU.tapDetected(Z_AXIS, POSITIVE))
79
80      Serial.println("Tap detected on positive Z-axis");
81
82  }
83}
84
85/*
86
87   Copyright (c) 2016 Intel Corporation.  All rights reserved.
88
89   This library is free software; you can redistribute it and/or
90
91   modify it under the terms of the GNU Lesser General Public
92
93   License as published by the Free Software Foundation; either
94
95   version 2.1 of the License, or (at your option) any later version.
96
97   This library is distributed in the hope that it will be useful,
98
99   but WITHOUT ANY WARRANTY; without even the implied warranty of
100
101   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
102
103   Lesser General Public License for more details.
104
105   You should have received a copy of the GNU Lesser General Public
106
107   License along with this library; if not, write to the Free Software
108
109   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
110
111*/