File content as of revision 66:99e34b1e9038:

/**
 ******************************************************************************
 * @file    main.cpp
 * @author  AST / EST
 * @version V0.0.1
 * @date    14-April-2015
 * @brief   Example application for using the X_NUCLEO_IKS01A1 
 *          MEMS Inertial & Environmental Sensor Nucleo expansion board.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *   1. Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright notice,
 *      this list of conditions and the following disclaimer in the documentation
 *      and/or other materials provided with the distribution.
 *   3. Neither the name of STMicroelectronics nor the names of its contributors
 *      may be used to endorse or promote products derived from this software
 *      without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
*/ 

/**
 * @mainpage X_NUCLEO_IKS01A1 MEMS Inertial & Environmental Sensor Nucleo Expansion Board Firmware Package
 *
 * <b>Introduction</b>
 *
 * This firmware package includes Components Device Drivers, Board Support Package
 * and example application for STMicroelectronics X_NUCLEO_IKS01A1 MEMS Inertial & Environmental Nucleo
 * Expansion Board
 * 
 * <b>Example Application</b>
 *
 */


/*** Includes ----------------------------------------------------------------- ***/
#include "mbed.h"
#include "assert.h"
#include "x_nucleo_iks01a1.h"

#include <Ticker.h>


/*** Constants ---------------------------------------------------------------- ***/

/*** Macros ------------------------------------------------------------------- ***/
#define APP_LOOP_PERIOD 3000 // in ms

/*** Typedefs ----------------------------------------------------------------- ***/
typedef struct {
    int32_t AXIS_X;
    int32_t AXIS_Y;
    int32_t AXIS_Z;
} AxesRaw_TypeDef;


/*** Static variables --------------------------------------------------------- ***/
#ifdef DBG_MCU
/* betzw: enable debugging while using sleep modes */
#include "DbgMCU.h"
static DbgMCU enable_dbg;
#endif // DBG_MCU

static X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance();
static MotionSensor *accelerometer = mems_expansion_board->GetAccelerometer();

static Ticker ticker;
//static DigitalOut myled(LED1, LED_OFF);

static volatile bool timer_irq_triggered = false;

/*** Interrupt Handler Top-Halves ------------------------------------------------------ ***/
/* Called in interrupt context, therefore just set a trigger variable */
static void timer_irq(void) {
	timer_irq_triggered = true;
}

/* Main cycle function */
static void main_cycle(void) {
	AxesRaw_TypeDef ACC_Value;
	unsigned int ret = 0;

	/* Determine Environmental Values */
	ret |= (!CALL_METH(accelerometer, Get_X_Axes, (int32_t *)&ACC_Value, 0) ? 0x0 : 0x20);;

	/* Print Values Out */
	printf("ACC [mg]:     X:%9ld Y:%9ld Z:%9ld\n", ACC_Value.AXIS_X, ACC_Value.AXIS_Y, ACC_Value.AXIS_Z);
}


/*** Main function ------------------------------------------------------------- ***/
/* Generic main function/loop for enabling WFE in case of 
   interrupt based cyclic execution
*/
int main()
{
	uint8_t id2;
	/* Start & initialize */
	printf("\n--- Starting new run ---\n");
	CALL_METH(accelerometer, ReadID, &id2, 0x0);	

	/* Start timer irq */
	//ticker.attach_us(timer_irq, MS_INTERVALS * APP_LOOP_PERIOD);
	ticker.attach_us(timer_irq, 200000);

	while (true) {
		if(timer_irq_triggered) {
			timer_irq_triggered = false;
			main_cycle();
		} else {
			__WFE(); /* it is recommended that SEVONPEND in the 
				    System Control Register is NOT set */
		}
	}
}