ST
Example of free fall detection for LSM6DSO in X-NUCLEO-IKS01A3
Dependencies: X_NUCLEO_IKS01A3
Free Fall Detection Demo Application with LSM6DSO based on sensor expansion board X-NUCLEO-IKS01A3
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.
Revision 0:f84262b9053f, committed 2019-03-06
- Comitter:
- cparata
- Date:
- Wed Mar 06 13:29:13 2019 +0000
- Child:
- 1:f3feeccc125f
- Commit message:
- First version of FreeFall_LSM6DSO_IKS01A3 application
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/X_NUCLEO_IKS01A3.lib Wed Mar 06 13:29:13 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/teams/ST-Expansion-SW-Team/code/X_NUCLEO_IKS01A3/#b65a75d6b409
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Mar 06 13:29:13 2019 +0000
@@ -0,0 +1,107 @@
+/**
+ ******************************************************************************
+ * @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 "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_free_fall_enable = 0;
+static int free_fall_is_enabled = 1;
+
+/* User button callback. */
+void pressed_cb() {
+ toggle_free_fall_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 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 (mems_event) {
+ mems_event = 0;
+ LSM6DSO_Event_Status_t status;
+ acc_gyro->get_event_status(&status);
+ if (status.FreeFallStatus) {
+ /* Led blinking. */
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+
+ /* Output data. */
+ printf("Free Fall Detected!\r\n");
+ }
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Mar 06 13:29:13 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file