ST
Example of wake up detection for LIS2DW12 in X-NUCLEO-IKS01A3
Dependencies: X_NUCLEO_IKS01A3
Wake up Demo Application with LIS2DW12 based on sensor expansion board X-NUCLEO-IKS01A3
Main function is to show how to detect the wake up 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 shake the board and then view the notification using an hyper terminal. When the wake up event is detected, the LED is switched on for a while.
- the user button can be used to enable/disable the wake up detection feature.
Diff: main.cpp
- Revision:
- 5:69cd10d5ca51
- Parent:
- 0:276fc25c1c41
- Child:
- 6:57d0454ddd40
diff -r 693575dae275 -r 69cd10d5ca51 main.cpp
--- a/main.cpp Mon Jun 03 09:34:12 2019 +0000
+++ b/main.cpp Wed Jul 24 15:03:42 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
@@ -34,75 +34,78 @@
* 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 LIS2DW12Sensor *accelerometer = mems_expansion_board->accelerometer;
-
+
InterruptIn mybutton(USER_BUTTON);
DigitalOut myled(LED1);
-
+
volatile int mems_event = 0;
volatile int toggle_wake_up_enable = 0;
static int wake_up_is_enabled = 1;
-
+
void pressed_cb();
void INT1_cb();
-
+
/* Simple main function */
-int main() {
- /* Attach callback to User button press */
- mybutton.fall(&pressed_cb);
- /* Attach callback to LIS2DW12 INT1 */
- accelerometer->attach_int1_irq(&INT1_cb);
-
- /* Enable LIS2DW12 accelerometer */
- accelerometer->enable_x();
- /* Enable Wake-Up Detection. */
- accelerometer->enable_wake_up_detection();
-
- printf("\r\n--- Starting new run ---\r\n");
-
- while(1) {
- if(toggle_wake_up_enable) {
- toggle_wake_up_enable = 0;
- if(wake_up_is_enabled == 0) {
- accelerometer->enable_wake_up_detection();
- wake_up_is_enabled = 1;
- } else {
- accelerometer->disable_wake_up_detection();
- wake_up_is_enabled = 0;
- }
+int main()
+{
+ /* Attach callback to User button press */
+ mybutton.fall(&pressed_cb);
+ /* Attach callback to LIS2DW12 INT1 */
+ accelerometer->attach_int1_irq(&INT1_cb);
+
+ /* Enable LIS2DW12 accelerometer */
+ accelerometer->enable_x();
+ /* Enable Wake-Up Detection. */
+ accelerometer->enable_wake_up_detection();
+
+ printf("\r\n--- Starting new run ---\r\n");
+
+ while (1) {
+ if (toggle_wake_up_enable) {
+ toggle_wake_up_enable = 0;
+ if (wake_up_is_enabled == 0) {
+ accelerometer->enable_wake_up_detection();
+ wake_up_is_enabled = 1;
+ } else {
+ accelerometer->disable_wake_up_detection();
+ wake_up_is_enabled = 0;
+ }
+ }
+
+ if (mems_event) {
+ mems_event = 0;
+ LIS2DW12_Event_Status_t status;
+ accelerometer->get_event_status(&status);
+ if (status.WakeUpStatus) {
+ /* Led blinking. */
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+
+ /* Output data. */
+ printf("Wake Up Detected!\r\n");
+ }
+ }
}
-
- if (mems_event) {
- mems_event = 0;
- LIS2DW12_Event_Status_t status;
- accelerometer->get_event_status(&status);
- if (status.WakeUpStatus) {
- /* Led blinking. */
- myled = 1;
- wait(0.2);
- myled = 0;
-
- /* Output data. */
- printf("Wake Up Detected!\r\n");
- }
- }
- }
+}
+
+void pressed_cb()
+{
+ toggle_wake_up_enable = 1;
}
-
-void pressed_cb() {
- toggle_wake_up_enable = 1;
+
+void INT1_cb()
+{
+ mems_event = 1;
}
-
-void INT1_cb() {
- mems_event = 1;
-}