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_IKS01A1 
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 #include <stdio.h>
00043 #include <time.h>
00044 
00045 /* Instantiate the expansion board */
00046 static XNucleoIKS01A2 *mems_expansion_board = XNucleoIKS01A2::instance(D14, D15, D4, D5);
00047 
00048 /* Retrieve the composing elements of the expansion board */
00049 //static LSM303AGRMagSensor *magnetometer = mems_expansion_board->magnetometer;
00050 static HTS221Sensor *hum_temp = mems_expansion_board->ht_sensor;
00051 static LPS22HBSensor *press_temp = mems_expansion_board->pt_sensor;
00052 int offset = 5;
00053 float F;
00054 
00055 
00056 /* Helper function for printing floats & doubles */
00057 static char *print_double(char* str, double v, int decimalDigits=2)
00058 {
00059   int i = 1;
00060   int intPart, fractPart;
00061   int len;
00062   char *ptr;
00063 
00064   /* prepare decimal digits multiplicator */
00065   for (;decimalDigits!=0; i*=10, decimalDigits--);
00066 
00067   /* calculate integer & fractinal parts */
00068   intPart = (int)v;
00069   fractPart = (int)((v-(double)(int)v)*i);
00070 
00071   /* fill in integer part */
00072   sprintf(str, "%i.", intPart);
00073 
00074   /* prepare fill in of fractional part */
00075   len = strlen(str);
00076   ptr = &str[len];
00077 
00078   /* fill in leading fractional zeros */
00079   for (i/=10;i>1; i/=10, ptr++) {
00080     if (fractPart >= i) {
00081       break;
00082     }
00083     *ptr = '0';
00084   }
00085 
00086   /* fill in (rest of) fractional part */
00087   sprintf(ptr, "%i", fractPart);
00088 
00089   return str;
00090 }
00091 
00092 /* Simple main function */
00093 int main() {
00094 
00095   uint8_t id;
00096    //in order to calibrate the temp sensor
00097   float value1, value2;
00098   //char buffer1[32], buffer2[32];
00099   //int32_t axes[3];
00100   
00101   /* Enable all sensors */
00102   hum_temp->enable();
00103   press_temp->enable();
00104   
00105 
00106 
00107   
00108   printf("\r\n--- Starting new run ---\r\n");
00109   
00110   /* Time */
00111   //Timer t;
00112   set_time(1608670310);
00113     
00114       
00115   hum_temp->read_id(&id);
00116   
00117   press_temp->read_id(&id);
00118   
00119   
00120  
00121   while(1) {
00122     printf("\r\n");
00123    // t.start();
00124     hum_temp->get_temperature(&value1);
00125     time_t seconds = time(NULL);
00126     
00127     F = ((value1 * 9.0) / 5.0 + 32) - offset;
00128     
00129 
00130     printf("%u, ", (unsigned int)seconds);
00131     //printf("%f, ", t.read());
00132     printf(" %7s", print_double(buffer1, F));
00133     //printf(" %s", buffer);
00134 
00135    wait(1200);
00136   }
00137 }