ST
Example of single tap and double tap detection for LSM6DSO in X-NUCLEO-IKS01A3
Dependencies: X_NUCLEO_IKS01A3
Single and Double Tap Demo Application with LSM6DSO based on sensor expansion board X-NUCLEO-IKS01A3
Main function is to show how to detect the single and double tap events 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 tap the board and then view the notification using an hyper terminal. When the single tap is detected,
the LED is switched on for a while.
- the user can press the user button to pass from the single tap detection to the double tap detection feature. The user can try to double tap the board and then view the notification using an hyper terminal. When the double tap is detected, the LED is switched on twice for a while.
- the user can press again the user button to disable the single and double tap detection feature.
- the user can press the user button to enable again the single tap detection feature and so on.
Diff: main.cpp
- Revision:
- 5:e274ee7b863d
- Parent:
- 0:34287d673609
- Child:
- 6:d4003733e337
--- a/main.cpp Mon Jun 03 09:51:56 2019 +0000
+++ b/main.cpp Wed Jul 24 14:49:01 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
@@ -34,109 +34,112 @@
* 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 change_mode = 0;
static int mode = 1; /* 0 means No tap, 1 means Single Tap enabled, 2 means Double Tap enabled*/
-
+
/* User button callback. */
-void pressed_cb() {
- change_mode = 1;
+void pressed_cb()
+{
+ change_mode = 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 Single Tap Detection. */
- acc_gyro->enable_single_tap_detection();
-
- printf("\r\n--- Starting new run ---\r\n");
-
- while(1) {
- if(change_mode) {
- change_mode = 0;
- mode = ((mode + 1) % 3);
- switch(mode) {
- case 0:
- /* Disable Double Tap */
- acc_gyro->disable_double_tap_detection();
- break;
- case 1:
- /* Enable Single Tap */
- acc_gyro->enable_single_tap_detection();
- break;
- case 2:
- /* Disable Single Tap and Enable Double Tap */
- acc_gyro->disable_single_tap_detection();
- acc_gyro->enable_double_tap_detection();
- break;
- }
+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 Single Tap Detection. */
+ acc_gyro->enable_single_tap_detection();
+
+ printf("\r\n--- Starting new run ---\r\n");
+
+ while (1) {
+ if (change_mode) {
+ change_mode = 0;
+ mode = ((mode + 1) % 3);
+ switch (mode) {
+ case 0:
+ /* Disable Double Tap */
+ acc_gyro->disable_double_tap_detection();
+ break;
+ case 1:
+ /* Enable Single Tap */
+ acc_gyro->enable_single_tap_detection();
+ break;
+ case 2:
+ /* Disable Single Tap and Enable Double Tap */
+ acc_gyro->disable_single_tap_detection();
+ acc_gyro->enable_double_tap_detection();
+ break;
+ }
+ }
+
+ if (mems_event) {
+ mems_event = 0;
+ switch (mode) {
+ case 0:
+ default:
+ break;
+ case 1: {
+ LSM6DSO_Event_Status_t status;
+ acc_gyro->get_event_status(&status);
+ if (status.TapStatus) {
+ /* Led blinking. */
+ myled = 1;
+ wait(0.1);
+ myled = 0;
+
+ /* Output data. */
+ printf("Single Tap Detected!\r\n");
+ }
+ break;
+ }
+ case 2: {
+ LSM6DSO_Event_Status_t status;
+ acc_gyro->get_event_status(&status);
+ if (status.DoubleTapStatus) {
+ /* Double Led blinking */
+ myled = 1;
+ wait(0.1);
+ myled = 0;
+ wait(0.1);
+ myled = 1;
+ wait(0.1);
+ myled = 0;
+
+ /* Output data. */
+ printf("Double Tap Detected!\r\n");
+ }
+ break;
+ }
+ }
+ }
}
-
- if (mems_event) {
- mems_event = 0;
- switch(mode) {
- case 0:
- default:
- break;
- case 1: {
- LSM6DSO_Event_Status_t status;
- acc_gyro->get_event_status(&status);
- if (status.TapStatus) {
- /* Led blinking. */
- myled = 1;
- wait(0.1);
- myled = 0;
-
- /* Output data. */
- printf("Single Tap Detected!\r\n");
- }
- break;
- }
- case 2: {
- LSM6DSO_Event_Status_t status;
- acc_gyro->get_event_status(&status);
- if (status.DoubleTapStatus) {
- /* Double Led blinking */
- myled = 1;
- wait(0.1);
- myled = 0;
- wait(0.1);
- myled = 1;
- wait(0.1);
- myled = 0;
-
- /* Output data. */
- printf("Double Tap Detected!\r\n");
- }
- break;
- }
- }
- }
- }
}