Arduino 101 CurieIMU Step Count

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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
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13   Intel(R) Curie(TM) module can be used as a Step Counter (pedometer)
14
15*/
16
17#include "CurieIMU.h"
18
19/* To get an interrupt notification for every step detected,
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21    set stepEventsEnabeled to true. Otherwise, the main loop will
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23    poll for the current step count.
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25   By design, the step counter does not immediately update on every step detected.
26
27   Please refer to Section 2.7 of the BMI160 IMU SensorData Sheet
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29   for more information on this feature.
30
31*/
32
33const int ledPin = 13;
34
35bool stepEventsEnabeled = true;   // whether you're polling or using events
36long lastStepCount = 0;              // step count on previous polling check
37
38bool blinkState = false;          // state of the LED
39
40void setup() {
41
42  Serial.begin(9600); // initialize Serial communication
43
44  while(!Serial) ;    // wait for serial port to connect.
45
46  // pinMode(13, OUTPUT);
47
48  // initialize the sensor:
49
50  CurieIMU.begin();
51
52  // turn on step detection mode:
53
54  CurieIMU.setStepDetectionMode(CURIE_IMU_STEP_MODE_NORMAL);
55
56  // enable step counting:
57
58  CurieIMU.setStepCountEnabled(true);
59
60  if (stepEventsEnabeled) {
61
62    // attach the eventCallback function as the
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64    // step event handler:
65
66    CurieIMU.attachInterrupt(eventCallback);
67
68    CurieIMU.interrupts(CURIE_IMU_STEP);  // turn on step detection
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70    Serial.println("IMU initialisation complete, waiting for events...");
71
72  }
73}
74
75void loop() {
76
77  /* Instead of using step detection event notifications,
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79     we can check the step count periodically */
80
81  if (!stepEventsEnabeled) {
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83    updateStepCount();
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85  }
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87  digitalWrite(13, blinkState);
88
89  blinkState = !blinkState;
90
91  delay(1000);
92}
93
94static void updateStepCount() {
95
96  // get the step count:
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98  int stepCount = CurieIMU.getStepCount();
99
100  // if the step count has changed, print it:
101
102  if (stepCount != lastStepCount) {
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104    Serial.print("Step count: ");
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106    Serial.println(stepCount);
107
108    // save the current count for comparison next check:
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110    lastStepCount = stepCount;
111
112  }
113}
114
115static void eventCallback(void) {
116
117  if (CurieIMU.stepsDetected())
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119    updateStepCount();
120}
121
122/*
123
124   Copyright (c) 2016 Intel Corporation.  All rights reserved.
125
126   This library is free software; you can redistribute it and/or
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128   modify it under the terms of the GNU Lesser General Public
129
130   License as published by the Free Software Foundation; either
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132   version 2.1 of the License, or (at your option) any later version.
133
134   This library is distributed in the hope that it will be useful,
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136   but WITHOUT ANY WARRANTY; without even the implied warranty of
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138   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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140   Lesser General Public License for more details.
141
142   You should have received a copy of the GNU Lesser General Public
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144   License along with this library; if not, write to the Free Software
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146   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
147
148*/