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