ST / Mbed OS Tilt_LSM6DSO_IKS01A3

Example of tilt detection for LSM6DSO in X-NUCLEO-IKS01A3

Dependencies:   X_NUCLEO_IKS01A3

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

Main function is to show how to detect the tilt event 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 tilt the board and then view the notification using an hyper terminal. When the tilt event is detected, the LED is switched on for a while.
- the user button can be used to enable/disable the tilt detection feature.

main.cpp@4:d8d8732faabd, 2019-06-03 (annotated)

Committer:
cparata
Date:
Mon Jun 03 09:44:40 2019 +0000
Revision:
4:d8d8732faabd
Parent:
0:a1b39e1d2ad4
Child:
5:ec2f08a6c698
Update example to be compatible with mbed OS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cparata 0:a1b39e1d2ad4 1 /**
cparata 0:a1b39e1d2ad4 2 ******************************************************************************
cparata 0:a1b39e1d2ad4 3 * @file main.cpp
cparata 0:a1b39e1d2ad4 4 * @author SRA
cparata 0:a1b39e1d2ad4 5 * @version V1.0.0
cparata 0:a1b39e1d2ad4 6 * @date 5-March-2019
cparata 0:a1b39e1d2ad4 7 * @brief Simple Example application for using the X_NUCLEO_IKS01A3
cparata 0:a1b39e1d2ad4 8 * MEMS Inertial & Environmental Sensor Nucleo expansion board.
cparata 0:a1b39e1d2ad4 9 ******************************************************************************
cparata 0:a1b39e1d2ad4 10 * @attention
cparata 0:a1b39e1d2ad4 11 *
cparata 0:a1b39e1d2ad4 12 * <h2><center>&copy; COPYRIGHT(c) 2019 STMicroelectronics</center></h2>
cparata 0:a1b39e1d2ad4 13 *
cparata 0:a1b39e1d2ad4 14 * Redistribution and use in source and binary forms, with or without modification,
cparata 0:a1b39e1d2ad4 15 * are permitted provided that the following conditions are met:
cparata 0:a1b39e1d2ad4 16 * 1. Redistributions of source code must retain the above copyright notice,
cparata 0:a1b39e1d2ad4 17 * this list of conditions and the following disclaimer.
cparata 0:a1b39e1d2ad4 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
cparata 0:a1b39e1d2ad4 19 * this list of conditions and the following disclaimer in the documentation
cparata 0:a1b39e1d2ad4 20 * and/or other materials provided with the distribution.
cparata 0:a1b39e1d2ad4 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
cparata 0:a1b39e1d2ad4 22 * may be used to endorse or promote products derived from this software
cparata 0:a1b39e1d2ad4 23 * without specific prior written permission.
cparata 0:a1b39e1d2ad4 24 *
cparata 0:a1b39e1d2ad4 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cparata 0:a1b39e1d2ad4 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cparata 0:a1b39e1d2ad4 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
cparata 0:a1b39e1d2ad4 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
cparata 0:a1b39e1d2ad4 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
cparata 0:a1b39e1d2ad4 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
cparata 0:a1b39e1d2ad4 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
cparata 0:a1b39e1d2ad4 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
cparata 0:a1b39e1d2ad4 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
cparata 0:a1b39e1d2ad4 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cparata 0:a1b39e1d2ad4 35 *
cparata 0:a1b39e1d2ad4 36 ******************************************************************************
cparata 0:a1b39e1d2ad4 37 */
cparata 0:a1b39e1d2ad4 38
cparata 0:a1b39e1d2ad4 39 /* Includes */
cparata 0:a1b39e1d2ad4 40 #include "mbed.h"
cparata 0:a1b39e1d2ad4 41 #include "XNucleoIKS01A3.h"
cparata 0:a1b39e1d2ad4 42
cparata 0:a1b39e1d2ad4 43 /* Instantiate the expansion board */
cparata 0:a1b39e1d2ad4 44 static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4);
cparata 0:a1b39e1d2ad4 45
cparata 0:a1b39e1d2ad4 46 /* Retrieve the composing elements of the expansion board */
cparata 0:a1b39e1d2ad4 47 static LSM6DSOSensor *acc_gyro = mems_expansion_board->acc_gyro;
cparata 0:a1b39e1d2ad4 48
cparata 0:a1b39e1d2ad4 49 InterruptIn mybutton(USER_BUTTON);
cparata 0:a1b39e1d2ad4 50 DigitalOut myled(LED1);
cparata 0:a1b39e1d2ad4 51
cparata 0:a1b39e1d2ad4 52 volatile int mems_event = 0;
cparata 0:a1b39e1d2ad4 53 volatile int toggle_tilt_enable = 0;
cparata 0:a1b39e1d2ad4 54 static int tilt_is_enabled = 1;
cparata 0:a1b39e1d2ad4 55
cparata 0:a1b39e1d2ad4 56 /* User button callback. */
cparata 0:a1b39e1d2ad4 57 void pressed_cb() {
cparata 0:a1b39e1d2ad4 58 toggle_tilt_enable = 1;
cparata 0:a1b39e1d2ad4 59 }
cparata 0:a1b39e1d2ad4 60
cparata 0:a1b39e1d2ad4 61 /* Interrupt 1 callback. */
cparata 0:a1b39e1d2ad4 62 void int1_cb() {
cparata 0:a1b39e1d2ad4 63 mems_event = 1;
cparata 0:a1b39e1d2ad4 64 }
cparata 0:a1b39e1d2ad4 65
cparata 0:a1b39e1d2ad4 66 /* Simple main function */
cparata 0:a1b39e1d2ad4 67 int main() {
cparata 0:a1b39e1d2ad4 68 /* Attach callback to User button press */
cparata 0:a1b39e1d2ad4 69 mybutton.fall(&pressed_cb);
cparata 0:a1b39e1d2ad4 70 /* Attach callback to LSM6DSO INT1 */
cparata 0:a1b39e1d2ad4 71 acc_gyro->attach_int1_irq(&int1_cb);
cparata 0:a1b39e1d2ad4 72
cparata 0:a1b39e1d2ad4 73 /* Enable LSM6DSO accelerometer */
cparata 0:a1b39e1d2ad4 74 acc_gyro->enable_x();
cparata 0:a1b39e1d2ad4 75 /* Enable Tilt Detection. */
cparata 0:a1b39e1d2ad4 76 acc_gyro->enable_tilt_detection();
cparata 0:a1b39e1d2ad4 77
cparata 0:a1b39e1d2ad4 78 printf("\r\n--- Starting new run ---\r\n");
cparata 0:a1b39e1d2ad4 79
cparata 0:a1b39e1d2ad4 80 while(1) {
cparata 0:a1b39e1d2ad4 81 if(toggle_tilt_enable) {
cparata 0:a1b39e1d2ad4 82 toggle_tilt_enable = 0;
cparata 0:a1b39e1d2ad4 83 if(tilt_is_enabled == 0) {
cparata 0:a1b39e1d2ad4 84 acc_gyro->enable_tilt_detection();
cparata 0:a1b39e1d2ad4 85 tilt_is_enabled = 1;
cparata 0:a1b39e1d2ad4 86 } else {
cparata 0:a1b39e1d2ad4 87 acc_gyro->disable_tilt_detection();
cparata 0:a1b39e1d2ad4 88 tilt_is_enabled = 0;
cparata 0:a1b39e1d2ad4 89 }
cparata 0:a1b39e1d2ad4 90 }
cparata 0:a1b39e1d2ad4 91
cparata 0:a1b39e1d2ad4 92 if (mems_event) {
cparata 0:a1b39e1d2ad4 93 mems_event = 0;
cparata 0:a1b39e1d2ad4 94 LSM6DSO_Event_Status_t status;
cparata 0:a1b39e1d2ad4 95 acc_gyro->get_event_status(&status);
cparata 0:a1b39e1d2ad4 96 if (status.TiltStatus) {
cparata 0:a1b39e1d2ad4 97 /* Led blinking. */
cparata 0:a1b39e1d2ad4 98 myled = 1;
cparata 0:a1b39e1d2ad4 99 wait(0.2);
cparata 0:a1b39e1d2ad4 100 myled = 0;
cparata 0:a1b39e1d2ad4 101
cparata 0:a1b39e1d2ad4 102 /* Output data. */
cparata 0:a1b39e1d2ad4 103 printf("Tilt Detected!\r\n");
cparata 0:a1b39e1d2ad4 104 }
cparata 0:a1b39e1d2ad4 105 }
cparata 0:a1b39e1d2ad4 106 }
cparata 0:a1b39e1d2ad4 107 }