ST / Mbed OS FreeFall_LSM6DSO_IKS01A3

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.

Files at this revision

API Documentation at this revision

Revision 5:4f3cf9d2ce1f, committed 2019-07-24

Comitter:
cparata
Date:
Wed Jul 24 14:40:55 2019 +0000
Parent:
4:b2b57a884b7b
Child:
6:5e279ec9a9cd
Commit message:
Format with Astyle

Changed in this revision

X_NUCLEO_IKS01A3.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/X_NUCLEO_IKS01A3.lib	Mon Jun 03 10:01:32 2019 +0000
+++ b/X_NUCLEO_IKS01A3.lib	Wed Jul 24 14:40:55 2019 +0000
@@ -1,1 +1,1 @@
-https://os.mbed.com/teams/ST/code/X_NUCLEO_IKS01A3/#40a48140855d
+https://os.mbed.com/teams/ST/code/X_NUCLEO_IKS01A3/#463962d6f485

--- a/main.cpp	Mon Jun 03 10:01:32 2019 +0000
+++ b/main.cpp	Wed Jul 24 14:40:55 2019 +0000
@@ -4,7 +4,7 @@
  * @author  SRA
  * @version V1.0.0
  * @date    5-March-2019
- * @brief   Simple Example application for using the X_NUCLEO_IKS01A3 
+ * @brief   Simple Example application for using the X_NUCLEO_IKS01A3
  *          MEMS Inertial & Environmental Sensor Nucleo expansion board.
  ******************************************************************************
  * @attention
@@ -34,74 +34,77 @@
  * 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;
+void pressed_cb()
+{
+    toggle_free_fall_enable = 1;
 }
- 
+
 /* Interrupt 1 callback. */
-void int1_cb() {
-  mems_event = 1;
+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;
-      }
+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");
+            }
+        }
     }
- 
-    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");
-      }
-    }
-  }
 }