![](/media/cache/group/ST_logo_2020_blue_V_cmyk.jpg.50x50_q85.jpg)
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
- Committer:
- cparata
- Date:
- 2020-06-04
- Revision:
- 6:02bfc2810faa
- Parent:
- 5:ec2f08a6c698
- Child:
- 8:abeb077004a1
File content as of revision 6:02bfc2810faa:
/** ****************************************************************************** * @file main.cpp * @author SRA * @version V1.0.0 * @date 5-March-2019 * @brief Simple Example application for using the X_NUCLEO_IKS01A3 * MEMS Inertial & Environmental Sensor Nucleo expansion board. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2019 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 "rtos.h" #include "XNucleoIKS01A3.h" /* Instantiate the expansion board */ static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4); /* Retrieve the composing elements of the expansion board */ static LSM6DSOSensor *acc_gyro = mems_expansion_board->acc_gyro; InterruptIn mybutton(USER_BUTTON); DigitalOut myled(LED1); volatile int mems_event = 0; volatile int toggle_tilt_enable = 0; static int tilt_is_enabled = 1; /* User button callback. */ void pressed_cb() { toggle_tilt_enable = 1; } /* Interrupt 1 callback. */ void int1_cb() { mems_event = 1; } /* Simple main function */ int main() { /* Attach callback to User button press */ mybutton.fall(&pressed_cb); /* Attach callback to LSM6DSO INT1 */ acc_gyro->attach_int1_irq(&int1_cb); /* Enable LSM6DSO accelerometer */ acc_gyro->enable_x(); /* Enable Tilt Detection. */ acc_gyro->enable_tilt_detection(); printf("\r\n--- Starting new run ---\r\n"); while (1) { if (toggle_tilt_enable) { toggle_tilt_enable = 0; if (tilt_is_enabled == 0) { acc_gyro->enable_tilt_detection(); tilt_is_enabled = 1; } else { acc_gyro->disable_tilt_detection(); tilt_is_enabled = 0; } } if (mems_event) { mems_event = 0; LSM6DSO_Event_Status_t status; acc_gyro->get_event_status(&status); if (status.TiltStatus) { /* Led blinking. */ myled = 1; ThisThread::sleep_for(200); myled = 0; /* Output data. */ printf("Tilt Detected!\r\n"); } } } }