main.cpp

00001 /**
00002  ******************************************************************************
00003  * @file    main.cpp
00004  * @author  CLab
00005  * @version V1.0.0
00006  * @date    2-December-2016
00007  * @brief   Simple Example application for using the X_NUCLEO_IKS01A2 
00008  *          MEMS Inertial & Environmental Sensor Nucleo expansion board.
00009  ******************************************************************************
00010  * @attention
00011  *
00012  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
00013  *
00014  * Redistribution and use in source and binary forms, with or without modification,
00015  * are permitted provided that the following conditions are met:
00016  *   1. Redistributions of source code must retain the above copyright notice,
00017  *      this list of conditions and the following disclaimer.
00018  *   2. Redistributions in binary form must reproduce the above copyright notice,
00019  *      this list of conditions and the following disclaimer in the documentation
00020  *      and/or other materials provided with the distribution.
00021  *   3. Neither the name of STMicroelectronics nor the names of its contributors
00022  *      may be used to endorse or promote products derived from this software
00023  *      without specific prior written permission.
00024  *
00025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00028  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00029  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00030  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00031  *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00032  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00033  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00034  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00035  *
00036  ******************************************************************************
00037 */ 
00038 
00039 /* Includes */
00040 #include "mbed.h"
00041 #include "XNucleoIKS01A2.h"
00042 
00043 /* Instantiate the expansion board */
00044 static XNucleoIKS01A2 *mems_expansion_board = XNucleoIKS01A2::instance(D14, D15, D4, D5);
00045 
00046 /* Retrieve the composing elements of the expansion board */
00047 static LSM6DSLSensor *acc_gyro = mems_expansion_board->acc_gyro;
00048 
00049 InterruptIn mybutton(USER_BUTTON);
00050 DigitalOut myled(LED1);
00051 
00052 volatile int mems_event = 0;
00053 volatile int toggle_wake_up_enable = 0;
00054 static int wake_up_is_enabled = 1;
00055 
00056 void pressed_cb();
00057 void INT2_cb();
00058 
00059 /* Simple main function */
00060 int main() {
00061   /* Attach callback to User button press */
00062   mybutton.fall(&pressed_cb);
00063   /* Attach callback to LSM6DSL INT2 */
00064   acc_gyro->attach_int2_irq(&INT2_cb);
00065   
00066   /* Enable LSM6DSL accelerometer */
00067   acc_gyro->enable_x();
00068   /* Enable Wake-Up Detection. */
00069   acc_gyro->enable_wake_up_detection();
00070   
00071   printf("\r\n--- Starting new run ---\r\n");
00072  
00073   while(1) {
00074     if(toggle_wake_up_enable) {
00075       toggle_wake_up_enable = 0;
00076       if(wake_up_is_enabled == 0) {
00077         acc_gyro->enable_wake_up_detection();
00078         wake_up_is_enabled = 1;
00079       } else {
00080         acc_gyro->disable_wake_up_detection();
00081         wake_up_is_enabled = 0;
00082       }
00083     }
00084  
00085     if (mems_event) {
00086       mems_event = 0;
00087       LSM6DSL_Event_Status_t status;
00088       acc_gyro->get_event_status(&status);
00089       if (status.WakeUpStatus) {
00090         /* Led blinking. */
00091         myled = 1;
00092         wait(0.2);
00093         myled = 0;
00094 
00095         /* Output data. */
00096         printf("Wake Up Detected!\r\n");
00097       }
00098     }
00099   }
00100 }
00101 
00102 void pressed_cb() {
00103   toggle_wake_up_enable = 1;
00104 }
00105 
00106 void INT2_cb() {
00107   mems_event = 1;
00108 }