main.cpp

00001 /**
00002  ******************************************************************************
00003  * @file    main.cpp
00004  * @author  SRA
00005  * @version V1.0.0
00006  * @date    5-March-2019
00007  * @brief   Simple Example application for using the X_NUCLEO_IKS01A3
00008  *          MEMS Inertial & Environmental Sensor Nucleo expansion board.
00009  ******************************************************************************
00010  * @attention
00011  *
00012  * <h2><center>&copy; COPYRIGHT(c) 2019 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 "rtos.h"
00042 #include "XNucleoIKS01A3.h"
00043 
00044 /* Instantiate the expansion board */
00045 static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4);
00046 
00047 /* Retrieve the composing elements of the expansion board */
00048 static LIS2DW12Sensor *accelerometer = mems_expansion_board->accelerometer;
00049 
00050 InterruptIn mybutton(BUTTON1);
00051 DigitalOut myled(LED1);
00052 
00053 volatile int mems_event = 0;
00054 volatile int toggle_wake_up_enable = 0;
00055 static int wake_up_is_enabled = 1;
00056 
00057 void pressed_cb();
00058 void INT1_cb();
00059 
00060 /* Simple main function */
00061 int main()
00062 {
00063     /* Attach callback to User button press */
00064     mybutton.fall(&pressed_cb);
00065     /* Attach callback to LIS2DW12 INT1 */
00066     accelerometer->attach_int1_irq(&INT1_cb);
00067 
00068     /* Enable LIS2DW12 accelerometer */
00069     accelerometer->enable_x();
00070     /* Enable Wake-Up Detection. */
00071     accelerometer->enable_wake_up_detection();
00072 
00073     printf("\r\n--- Starting new run ---\r\n");
00074 
00075     while (1) {
00076         if (toggle_wake_up_enable) {
00077             toggle_wake_up_enable = 0;
00078             if (wake_up_is_enabled == 0) {
00079                 accelerometer->enable_wake_up_detection();
00080                 wake_up_is_enabled = 1;
00081             } else {
00082                 accelerometer->disable_wake_up_detection();
00083                 wake_up_is_enabled = 0;
00084             }
00085         }
00086 
00087         if (mems_event) {
00088             mems_event = 0;
00089             LIS2DW12_Event_Status_t status;
00090             accelerometer->get_event_status(&status);
00091             if (status.WakeUpStatus) {
00092                 /* Led blinking. */
00093                 myled = 1;
00094                 ThisThread::sleep_for(200);
00095                 myled = 0;
00096 
00097                 /* Output data. */
00098                 printf("Wake Up Detected!\r\n");
00099             }
00100         }
00101     }
00102 }
00103 
00104 void pressed_cb()
00105 {
00106     toggle_wake_up_enable = 1;
00107 }
00108 
00109 void INT1_cb()
00110 {
00111     mems_event = 1;
00112 }