Example of free fall detection for LSM6DSL in X-NUCLEO-IKS01A2
Dependencies: X_NUCLEO_IKS01A2 mbed
Fork of FreeFall_IKS01A2 by
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
- Committer:
- cparata
- Date:
- 2016-08-12
- Revision:
- 0:6a670fda63c2
- Child:
- 4:6b137af9100e
File content as of revision 0:6a670fda63c2:
/** ****************************************************************************** * @file main.cpp * @author AST / EST * @version V0.0.1 * @date 9-August-2016 * @brief Simple Example application for using the X_NUCLEO_IKS01A2 * MEMS Inertial & Environmental Sensor Nucleo expansion board. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes */ #include "mbed.h" #include "x_nucleo_iks01a2.h" /* Instantiate the expansion board */ static X_NUCLEO_IKS01A2 *mems_expansion_board = X_NUCLEO_IKS01A2::Instance(D14, D15); /* Retrieve the composing elements of the expansion board */ static LSM6DSLSensor *acc_gyro = mems_expansion_board->acc_gyro; InterruptIn lsm6dsl_int1(IKS01A2_PIN_LSM6DSL_INT1); InterruptIn mybutton(USER_BUTTON); DigitalOut myled(LED1); volatile int free_fall = 0; volatile int toggle_free_fall_enable = 0; static int free_fall_is_enabled = 1; void pressed(); void freefall(); /* Simple main function */ int main() { /* Attach callback to User button press */ mybutton.fall(&pressed); /* Attach callback to LSM6DSL INT1 */ lsm6dsl_int1.rise(&freefall); /* Enable LSM6DSL accelerometer */ acc_gyro->Enable_X(); /* Enable Free Fall Detection. */ acc_gyro->Enable_Free_Fall_Detection(); printf("\r\n--- Starting new run ---\r\n"); while(1) { if(toggle_free_fall_enable) { toggle_free_fall_enable = 0; if(free_fall_is_enabled == 0) { acc_gyro->Enable_Free_Fall_Detection(); free_fall_is_enabled = 1; } else { acc_gyro->Disable_Free_Fall_Detection(); free_fall_is_enabled = 0; } } if (free_fall) { free_fall = 0; uint8_t status = 0; acc_gyro->Get_Status_Free_Fall_Detection(&status); if (status) { /* Led blinking. */ myled = 1; wait(0.2); myled = 0; /* Output data. */ printf("Free Fall Detected!\r\n"); } } } } void pressed() { toggle_free_fall_enable = 1; } void freefall() { free_fall = 1; }