ST / Mbed OS Pedometer_LSM6DSO_IKS01A3

Example of pedometer for LSM6DSO in X-NUCLEO-IKS01A3

Dependencies:   X_NUCLEO_IKS01A3

Pedometer Demo Application with LSM6DSO based on sensor expansion board X-NUCLEO-IKS01A3

Main function is to show how to count steps using the sensor expansion board and send a notification using UART to a connected PC or Desktop and display it on terminal applications like TeraTerm.
After connection has been established:
- the user can try to shake the board to simulate the steps and then view the notification using an hyper terminal. When a new step is detected, the LED is switched on for a while.
- the user button can be used to reset the step counter.

main.cpp@5:6f7bb1c63cac, 2019-07-24 (annotated)

Committer:
cparata
Date:
Wed Jul 24 14:45:22 2019 +0000
Revision:
5:6f7bb1c63cac
Parent:
0:b7de156e1e7f
Child:
6:6ea84663ee99
Format with Astyle

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cparata 0:b7de156e1e7f 1 /**
cparata 0:b7de156e1e7f 2 ******************************************************************************
cparata 0:b7de156e1e7f 3 * @file main.cpp
cparata 0:b7de156e1e7f 4 * @author SRA
cparata 0:b7de156e1e7f 5 * @version V1.0.0
cparata 0:b7de156e1e7f 6 * @date 5-March-2019
cparata 5:6f7bb1c63cac 7 * @brief Simple Example application for using the X_NUCLEO_IKS01A3
cparata 0:b7de156e1e7f 8 * MEMS Inertial & Environmental Sensor Nucleo expansion board.
cparata 0:b7de156e1e7f 9 ******************************************************************************
cparata 0:b7de156e1e7f 10 * @attention
cparata 0:b7de156e1e7f 11 *
cparata 0:b7de156e1e7f 12 * <h2><center>&copy; COPYRIGHT(c) 2019 STMicroelectronics</center></h2>
cparata 0:b7de156e1e7f 13 *
cparata 0:b7de156e1e7f 14 * Redistribution and use in source and binary forms, with or without modification,
cparata 0:b7de156e1e7f 15 * are permitted provided that the following conditions are met:
cparata 0:b7de156e1e7f 16 * 1. Redistributions of source code must retain the above copyright notice,
cparata 0:b7de156e1e7f 17 * this list of conditions and the following disclaimer.
cparata 0:b7de156e1e7f 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
cparata 0:b7de156e1e7f 19 * this list of conditions and the following disclaimer in the documentation
cparata 0:b7de156e1e7f 20 * and/or other materials provided with the distribution.
cparata 0:b7de156e1e7f 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
cparata 0:b7de156e1e7f 22 * may be used to endorse or promote products derived from this software
cparata 0:b7de156e1e7f 23 * without specific prior written permission.
cparata 0:b7de156e1e7f 24 *
cparata 0:b7de156e1e7f 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cparata 0:b7de156e1e7f 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cparata 0:b7de156e1e7f 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
cparata 0:b7de156e1e7f 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
cparata 0:b7de156e1e7f 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
cparata 0:b7de156e1e7f 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
cparata 0:b7de156e1e7f 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
cparata 0:b7de156e1e7f 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
cparata 0:b7de156e1e7f 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
cparata 0:b7de156e1e7f 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cparata 0:b7de156e1e7f 35 *
cparata 0:b7de156e1e7f 36 ******************************************************************************
cparata 5:6f7bb1c63cac 37 */
cparata 5:6f7bb1c63cac 38
cparata 0:b7de156e1e7f 39 /* Includes */
cparata 0:b7de156e1e7f 40 #include "mbed.h"
cparata 0:b7de156e1e7f 41 #include "XNucleoIKS01A3.h"
cparata 5:6f7bb1c63cac 42
cparata 0:b7de156e1e7f 43 /* Instantiate the expansion board */
cparata 0:b7de156e1e7f 44 static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4);
cparata 5:6f7bb1c63cac 45
cparata 0:b7de156e1e7f 46 /* Retrieve the composing elements of the expansion board */
cparata 0:b7de156e1e7f 47 static LSM6DSOSensor *acc_gyro = mems_expansion_board->acc_gyro;
cparata 5:6f7bb1c63cac 48
cparata 0:b7de156e1e7f 49 InterruptIn mybutton(USER_BUTTON);
cparata 0:b7de156e1e7f 50 DigitalOut myled(LED1);
cparata 5:6f7bb1c63cac 51
cparata 0:b7de156e1e7f 52 volatile int mems_event = 0;
cparata 0:b7de156e1e7f 53 volatile int step_count_reset_request = 0;
cparata 0:b7de156e1e7f 54 uint32_t previous_tick = 0;
cparata 0:b7de156e1e7f 55 uint32_t current_tick = 0;
cparata 0:b7de156e1e7f 56 uint16_t step_count = 0;
cparata 5:6f7bb1c63cac 57
cparata 0:b7de156e1e7f 58 /* User button callback. */
cparata 5:6f7bb1c63cac 59 void pressed_cb()
cparata 5:6f7bb1c63cac 60 {
cparata 5:6f7bb1c63cac 61 step_count_reset_request = 1;
cparata 0:b7de156e1e7f 62 }
cparata 5:6f7bb1c63cac 63
cparata 0:b7de156e1e7f 64 /* Interrupt 1 callback. */
cparata 5:6f7bb1c63cac 65 void int1_cb()
cparata 5:6f7bb1c63cac 66 {
cparata 5:6f7bb1c63cac 67 mems_event = 1;
cparata 0:b7de156e1e7f 68 }
cparata 5:6f7bb1c63cac 69
cparata 0:b7de156e1e7f 70 /* Simple main function */
cparata 5:6f7bb1c63cac 71 int main()
cparata 5:6f7bb1c63cac 72 {
cparata 5:6f7bb1c63cac 73 /* Attach callback to User button press */
cparata 5:6f7bb1c63cac 74 mybutton.fall(&pressed_cb);
cparata 5:6f7bb1c63cac 75 /* Attach callback to LSM6DSO INT1 */
cparata 5:6f7bb1c63cac 76 acc_gyro->attach_int1_irq(&int1_cb);
cparata 5:6f7bb1c63cac 77
cparata 5:6f7bb1c63cac 78 /* Enable LSM6DSO accelerometer */
cparata 5:6f7bb1c63cac 79 acc_gyro->enable_x();
cparata 5:6f7bb1c63cac 80 /* Enable Pedometer. */
cparata 5:6f7bb1c63cac 81 acc_gyro->enable_pedometer();
cparata 5:6f7bb1c63cac 82
cparata 5:6f7bb1c63cac 83 previous_tick = clock();
cparata 5:6f7bb1c63cac 84
cparata 5:6f7bb1c63cac 85 printf("\r\n--- Starting new run ---\r\n");
cparata 5:6f7bb1c63cac 86
cparata 5:6f7bb1c63cac 87 while (1) {
cparata 5:6f7bb1c63cac 88 if (mems_event) {
cparata 5:6f7bb1c63cac 89 mems_event = 0;
cparata 5:6f7bb1c63cac 90 LSM6DSO_Event_Status_t status;
cparata 5:6f7bb1c63cac 91 acc_gyro->get_event_status(&status);
cparata 5:6f7bb1c63cac 92 if (status.StepStatus) {
cparata 5:6f7bb1c63cac 93 /* New step detected, so print the step counter */
cparata 5:6f7bb1c63cac 94 acc_gyro->get_step_counter(&step_count);
cparata 5:6f7bb1c63cac 95 printf("Step counter: %d\r\n", step_count);
cparata 5:6f7bb1c63cac 96
cparata 5:6f7bb1c63cac 97 /* Led blinking. */
cparata 5:6f7bb1c63cac 98 myled = 1;
cparata 5:6f7bb1c63cac 99 wait(0.1);
cparata 5:6f7bb1c63cac 100 myled = 0;
cparata 5:6f7bb1c63cac 101 }
cparata 5:6f7bb1c63cac 102 }
cparata 5:6f7bb1c63cac 103
cparata 5:6f7bb1c63cac 104 if (step_count_reset_request) {
cparata 5:6f7bb1c63cac 105 step_count_reset_request = 0;
cparata 5:6f7bb1c63cac 106 acc_gyro->reset_step_counter();
cparata 5:6f7bb1c63cac 107 }
cparata 5:6f7bb1c63cac 108
cparata 5:6f7bb1c63cac 109 /* Print the step counter in any case every 3s */
cparata 5:6f7bb1c63cac 110 current_tick = clock();
cparata 5:6f7bb1c63cac 111 if (((current_tick - previous_tick) / CLOCKS_PER_SEC) >= 3) {
cparata 5:6f7bb1c63cac 112 acc_gyro->get_step_counter(&step_count);
cparata 5:6f7bb1c63cac 113 printf("Step counter: %d\r\n", step_count);
cparata 5:6f7bb1c63cac 114 previous_tick = clock();
cparata 5:6f7bb1c63cac 115 }
cparata 0:b7de156e1e7f 116 }
cparata 0:b7de156e1e7f 117 }