ST
Example of free fall detection for LSM6DSL in X-NUCLEO-IKS01A2
Dependencies: X_NUCLEO_IKS01A2 mbed
Fork of
FreeFall_IKS01A2
by 
ST Expansion SW Team
Free Fall Detection Demo Application based on sensor expansion board X-NUCLEO-IKS01A2
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.
Diff: main.cpp
- Revision:
- 7:8d01cc2032b8
- Parent:
- 6:f9bbe6142ac5
- Child:
- 8:b460ca90deb9
diff -r f9bbe6142ac5 -r 8d01cc2032b8 main.cpp
--- a/main.cpp Wed Nov 23 16:45:16 2016 +0000
+++ b/main.cpp Thu Nov 24 16:44:39 2016 +0000
@@ -49,19 +49,19 @@
InterruptIn mybutton(USER_BUTTON);
DigitalOut myled(LED1);
-volatile int free_fall = 0;
+volatile int mems_event = 0;
volatile int toggle_free_fall_enable = 0;
static int free_fall_is_enabled = 1;
-void pressed();
-void freefall();
+void pressed_cb();
+void INT1_cb();
/* Simple main function */
int main() {
/* Attach callback to User button press */
- mybutton.fall(&pressed);
+ mybutton.fall(&pressed_cb);
/* Attach callback to LSM6DSL INT1 */
- acc_gyro->AttachINT1IRQ(&freefall);
+ acc_gyro->AttachINT1IRQ(&INT1_cb);
/* Enable LSM6DSL accelerometer */
acc_gyro->Enable_X();
@@ -82,8 +82,8 @@
}
}
- if (free_fall) {
- free_fall = 0;
+ if (mems_event) {
+ mems_event = 0;
LSM6DSL_Event_Status_t status;
acc_gyro->Get_Event_Status(&status);
if (status.FreeFallStatus) {
@@ -99,10 +99,10 @@
}
}
-void pressed() {
+void pressed_cb() {
toggle_free_fall_enable = 1;
}
-void freefall() {
- free_fall = 1;
+void INT1_cb() {
+ mems_event = 1;
}