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@2:9d0ec6d07bda, 2019-04-12 (annotated)

Committer:
cparata
Date:
Fri Apr 12 13:42:09 2019 +0000
Revision:
2:9d0ec6d07bda
Parent:
0:b7de156e1e7f
Child:
5:6f7bb1c63cac
Update X-NUCLEO-IKS01A3 library

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 0:b7de156e1e7f 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 0:b7de156e1e7f 37 */
cparata 0:b7de156e1e7f 38
cparata 0:b7de156e1e7f 39 /* Includes */
cparata 0:b7de156e1e7f 40 #include "mbed.h"
cparata 0:b7de156e1e7f 41 #include "XNucleoIKS01A3.h"
cparata 0:b7de156e1e7f 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 0:b7de156e1e7f 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 0:b7de156e1e7f 48
cparata 0:b7de156e1e7f 49 InterruptIn mybutton(USER_BUTTON);
cparata 0:b7de156e1e7f 50 DigitalOut myled(LED1);
cparata 0:b7de156e1e7f 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 0:b7de156e1e7f 57
cparata 0:b7de156e1e7f 58 /* User button callback. */
cparata 0:b7de156e1e7f 59 void pressed_cb() {
cparata 0:b7de156e1e7f 60 step_count_reset_request = 1;
cparata 0:b7de156e1e7f 61 }
cparata 0:b7de156e1e7f 62
cparata 0:b7de156e1e7f 63 /* Interrupt 1 callback. */
cparata 0:b7de156e1e7f 64 void int1_cb() {
cparata 0:b7de156e1e7f 65 mems_event = 1;
cparata 0:b7de156e1e7f 66 }
cparata 0:b7de156e1e7f 67
cparata 0:b7de156e1e7f 68 /* Simple main function */
cparata 0:b7de156e1e7f 69 int main() {
cparata 0:b7de156e1e7f 70 /* Attach callback to User button press */
cparata 0:b7de156e1e7f 71 mybutton.fall(&pressed_cb);
cparata 0:b7de156e1e7f 72 /* Attach callback to LSM6DSO INT1 */
cparata 0:b7de156e1e7f 73 acc_gyro->attach_int1_irq(&int1_cb);
cparata 0:b7de156e1e7f 74
cparata 0:b7de156e1e7f 75 /* Enable LSM6DSO accelerometer */
cparata 0:b7de156e1e7f 76 acc_gyro->enable_x();
cparata 0:b7de156e1e7f 77 /* Enable Pedometer. */
cparata 0:b7de156e1e7f 78 acc_gyro->enable_pedometer();
cparata 0:b7de156e1e7f 79
cparata 0:b7de156e1e7f 80 previous_tick = clock();
cparata 0:b7de156e1e7f 81
cparata 0:b7de156e1e7f 82 printf("\r\n--- Starting new run ---\r\n");
cparata 0:b7de156e1e7f 83
cparata 0:b7de156e1e7f 84 while(1) {
cparata 0:b7de156e1e7f 85 if (mems_event) {
cparata 0:b7de156e1e7f 86 mems_event = 0;
cparata 0:b7de156e1e7f 87 LSM6DSO_Event_Status_t status;
cparata 0:b7de156e1e7f 88 acc_gyro->get_event_status(&status);
cparata 0:b7de156e1e7f 89 if (status.StepStatus) {
cparata 0:b7de156e1e7f 90 /* New step detected, so print the step counter */
cparata 0:b7de156e1e7f 91 acc_gyro->get_step_counter(&step_count);
cparata 0:b7de156e1e7f 92 printf("Step counter: %d\r\n", step_count);
cparata 0:b7de156e1e7f 93
cparata 0:b7de156e1e7f 94 /* Led blinking. */
cparata 0:b7de156e1e7f 95 myled = 1;
cparata 0:b7de156e1e7f 96 wait(0.1);
cparata 0:b7de156e1e7f 97 myled = 0;
cparata 0:b7de156e1e7f 98 }
cparata 0:b7de156e1e7f 99 }
cparata 0:b7de156e1e7f 100
cparata 0:b7de156e1e7f 101 if(step_count_reset_request) {
cparata 0:b7de156e1e7f 102 step_count_reset_request = 0;
cparata 0:b7de156e1e7f 103 acc_gyro->reset_step_counter();
cparata 0:b7de156e1e7f 104 }
cparata 0:b7de156e1e7f 105
cparata 0:b7de156e1e7f 106 /* Print the step counter in any case every 3s */
cparata 0:b7de156e1e7f 107 current_tick = clock();
cparata 0:b7de156e1e7f 108 if(((current_tick - previous_tick)/CLOCKS_PER_SEC) >= 3) {
cparata 0:b7de156e1e7f 109 acc_gyro->get_step_counter(&step_count);
cparata 0:b7de156e1e7f 110 printf("Step counter: %d\r\n", step_count);
cparata 0:b7de156e1e7f 111 previous_tick = clock();
cparata 0:b7de156e1e7f 112 }
cparata 0:b7de156e1e7f 113 }
cparata 0:b7de156e1e7f 114 }