ST / Mbed 2 deprecated FreeFall_IKS01A2

Example of free fall detection for LSM6DSL in X-NUCLEO-IKS01A2

Dependencies:   X_NUCLEO_IKS01A2 mbed

Fork of FreeFall_IKS01A2 by ST Expansion SW Team

Free Fall Detection Demo Application based on sensor expansion board X-NUCLEO-IKS01A2

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

main.cpp@0:6a670fda63c2, 2016-08-12 (annotated)

Committer:
cparata
Date:
Fri Aug 12 13:39:06 2016 +0000
Revision:
0:6a670fda63c2
Child:
4:6b137af9100e
First release of Free Fall for LSM6DSL in IKS01A2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cparata 0:6a670fda63c2 1 /**
cparata 0:6a670fda63c2 2 ******************************************************************************
cparata 0:6a670fda63c2 3 * @file main.cpp
cparata 0:6a670fda63c2 4 * @author AST / EST
cparata 0:6a670fda63c2 5 * @version V0.0.1
cparata 0:6a670fda63c2 6 * @date 9-August-2016
cparata 0:6a670fda63c2 7 * @brief Simple Example application for using the X_NUCLEO_IKS01A2
cparata 0:6a670fda63c2 8 * MEMS Inertial & Environmental Sensor Nucleo expansion board.
cparata 0:6a670fda63c2 9 ******************************************************************************
cparata 0:6a670fda63c2 10 * @attention
cparata 0:6a670fda63c2 11 *
cparata 0:6a670fda63c2 12 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
cparata 0:6a670fda63c2 13 *
cparata 0:6a670fda63c2 14 * Redistribution and use in source and binary forms, with or without modification,
cparata 0:6a670fda63c2 15 * are permitted provided that the following conditions are met:
cparata 0:6a670fda63c2 16 * 1. Redistributions of source code must retain the above copyright notice,
cparata 0:6a670fda63c2 17 * this list of conditions and the following disclaimer.
cparata 0:6a670fda63c2 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
cparata 0:6a670fda63c2 19 * this list of conditions and the following disclaimer in the documentation
cparata 0:6a670fda63c2 20 * and/or other materials provided with the distribution.
cparata 0:6a670fda63c2 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
cparata 0:6a670fda63c2 22 * may be used to endorse or promote products derived from this software
cparata 0:6a670fda63c2 23 * without specific prior written permission.
cparata 0:6a670fda63c2 24 *
cparata 0:6a670fda63c2 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cparata 0:6a670fda63c2 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cparata 0:6a670fda63c2 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
cparata 0:6a670fda63c2 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
cparata 0:6a670fda63c2 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
cparata 0:6a670fda63c2 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
cparata 0:6a670fda63c2 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
cparata 0:6a670fda63c2 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
cparata 0:6a670fda63c2 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
cparata 0:6a670fda63c2 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cparata 0:6a670fda63c2 35 *
cparata 0:6a670fda63c2 36 ******************************************************************************
cparata 0:6a670fda63c2 37 */
cparata 0:6a670fda63c2 38
cparata 0:6a670fda63c2 39 /* Includes */
cparata 0:6a670fda63c2 40 #include "mbed.h"
cparata 0:6a670fda63c2 41 #include "x_nucleo_iks01a2.h"
cparata 0:6a670fda63c2 42
cparata 0:6a670fda63c2 43 /* Instantiate the expansion board */
cparata 0:6a670fda63c2 44 static X_NUCLEO_IKS01A2 *mems_expansion_board = X_NUCLEO_IKS01A2::Instance(D14, D15);
cparata 0:6a670fda63c2 45
cparata 0:6a670fda63c2 46 /* Retrieve the composing elements of the expansion board */
cparata 0:6a670fda63c2 47 static LSM6DSLSensor *acc_gyro = mems_expansion_board->acc_gyro;
cparata 0:6a670fda63c2 48
cparata 0:6a670fda63c2 49 InterruptIn lsm6dsl_int1(IKS01A2_PIN_LSM6DSL_INT1);
cparata 0:6a670fda63c2 50 InterruptIn mybutton(USER_BUTTON);
cparata 0:6a670fda63c2 51 DigitalOut myled(LED1);
cparata 0:6a670fda63c2 52
cparata 0:6a670fda63c2 53 volatile int free_fall = 0;
cparata 0:6a670fda63c2 54 volatile int toggle_free_fall_enable = 0;
cparata 0:6a670fda63c2 55 static int free_fall_is_enabled = 1;
cparata 0:6a670fda63c2 56
cparata 0:6a670fda63c2 57 void pressed();
cparata 0:6a670fda63c2 58 void freefall();
cparata 0:6a670fda63c2 59
cparata 0:6a670fda63c2 60 /* Simple main function */
cparata 0:6a670fda63c2 61 int main() {
cparata 0:6a670fda63c2 62 /* Attach callback to User button press */
cparata 0:6a670fda63c2 63 mybutton.fall(&pressed);
cparata 0:6a670fda63c2 64 /* Attach callback to LSM6DSL INT1 */
cparata 0:6a670fda63c2 65 lsm6dsl_int1.rise(&freefall);
cparata 0:6a670fda63c2 66
cparata 0:6a670fda63c2 67 /* Enable LSM6DSL accelerometer */
cparata 0:6a670fda63c2 68 acc_gyro->Enable_X();
cparata 0:6a670fda63c2 69 /* Enable Free Fall Detection. */
cparata 0:6a670fda63c2 70 acc_gyro->Enable_Free_Fall_Detection();
cparata 0:6a670fda63c2 71
cparata 0:6a670fda63c2 72 printf("\r\n--- Starting new run ---\r\n");
cparata 0:6a670fda63c2 73
cparata 0:6a670fda63c2 74 while(1) {
cparata 0:6a670fda63c2 75 if(toggle_free_fall_enable) {
cparata 0:6a670fda63c2 76 toggle_free_fall_enable = 0;
cparata 0:6a670fda63c2 77 if(free_fall_is_enabled == 0) {
cparata 0:6a670fda63c2 78 acc_gyro->Enable_Free_Fall_Detection();
cparata 0:6a670fda63c2 79 free_fall_is_enabled = 1;
cparata 0:6a670fda63c2 80 } else {
cparata 0:6a670fda63c2 81 acc_gyro->Disable_Free_Fall_Detection();
cparata 0:6a670fda63c2 82 free_fall_is_enabled = 0;
cparata 0:6a670fda63c2 83 }
cparata 0:6a670fda63c2 84 }
cparata 0:6a670fda63c2 85
cparata 0:6a670fda63c2 86 if (free_fall) {
cparata 0:6a670fda63c2 87 free_fall = 0;
cparata 0:6a670fda63c2 88 uint8_t status = 0;
cparata 0:6a670fda63c2 89 acc_gyro->Get_Status_Free_Fall_Detection(&status);
cparata 0:6a670fda63c2 90 if (status) {
cparata 0:6a670fda63c2 91 /* Led blinking. */
cparata 0:6a670fda63c2 92 myled = 1;
cparata 0:6a670fda63c2 93 wait(0.2);
cparata 0:6a670fda63c2 94 myled = 0;
cparata 0:6a670fda63c2 95
cparata 0:6a670fda63c2 96 /* Output data. */
cparata 0:6a670fda63c2 97 printf("Free Fall Detected!\r\n");
cparata 0:6a670fda63c2 98 }
cparata 0:6a670fda63c2 99 }
cparata 0:6a670fda63c2 100 }
cparata 0:6a670fda63c2 101 }
cparata 0:6a670fda63c2 102
cparata 0:6a670fda63c2 103 void pressed() {
cparata 0:6a670fda63c2 104 toggle_free_fall_enable = 1;
cparata 0:6a670fda63c2 105 }
cparata 0:6a670fda63c2 106
cparata 0:6a670fda63c2 107 void freefall() {
cparata 0:6a670fda63c2 108 free_fall = 1;
cparata 0:6a670fda63c2 109 }