Diff: main.cpp

Revision:

0:1399adb8f248

Child:

3:3c8bce3cdf2f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 06 13:35:38 2019 +0000
@@ -0,0 +1,161 @@
+/**
+ ******************************************************************************
+ * @file    main.cpp
+ * @author  SRA
+ * @version V1.0.0
+ * @date    5-March-2019
+ * @brief   Simple Example application for using the X_NUCLEO_IKS01A3 
+ *          MEMS Inertial & Environmental Sensor Nucleo expansion board.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2019 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.
+ *
+ ******************************************************************************
+*/ 
+ 
+/* Includes */
+#include "mbed.h"
+#include "XNucleoIKS01A3.h"
+ 
+/* Instantiate the expansion board */
+static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4);
+ 
+/* Retrieve the composing elements of the expansion board */
+static STTS751Sensor *t_sensor = mems_expansion_board->t_sensor;
+
+DigitalOut myled(LED1);
+ 
+volatile int mems_event = 0;
+uint32_t previous_tick = 0;
+uint32_t current_tick = 0;
+uint8_t high = 0, low = 0;
+float temperature = 0.0f;
+char buffer[32];
+
+void INT_cb();
+
+/* Helper function for printing floats & doubles */
+static char *print_double(char* str, double v, int decimalDigits=2)
+{
+  int i = 1;
+  int intPart, fractPart;
+  int len;
+  char *ptr;
+
+  /* prepare decimal digits multiplicator */
+  for (;decimalDigits!=0; i*=10, decimalDigits--);
+
+  /* calculate integer & fractinal parts */
+  intPart = (int)v;
+  fractPart = (int)((v-(double)(int)v)*i);
+
+  /* fill in integer part */
+  sprintf(str, "%i.", intPart);
+
+  /* prepare fill in of fractional part */
+  len = strlen(str);
+  ptr = &str[len];
+
+  /* fill in leading fractional zeros */
+  for (i/=10;i>1; i/=10, ptr++) {
+    if (fractPart >= i) {
+      break;
+    }
+    *ptr = '0';
+  }
+
+  /* fill in (rest of) fractional part */
+  sprintf(ptr, "%i", fractPart);
+
+  return str;
+}
+
+/* Simple main function */
+int main() {
+  /* Attach callback to STTS751 INT */
+  t_sensor->attach_int_irq(&INT_cb);
+  
+  /* Enable STTS751 accelerometer */
+  t_sensor->enable();
+  /* Set ODR to 4Hz */
+  t_sensor->set_odr(4.0f);
+  /* Set Low Temperature Threshold */
+  t_sensor->set_low_temp_thr(22.0f);
+  /* Set High Temperature Threshold */
+  t_sensor->set_high_temp_thr(28.0f);
+  /* Enable Event pin */
+  t_sensor->set_event_pin(1);
+  /* Get beginning status */
+  t_sensor->get_temp_limit_status(NULL, NULL, NULL);
+
+  previous_tick = clock();
+  
+  printf("\r\n--- Starting new run ---\r\n");
+ 
+  while(1) {
+    if (mems_event) {
+      mems_event=0;
+      uint8_t high_temp = 0, low_temp = 0;
+      t_sensor->get_temp_limit_status(&high_temp, &low_temp, NULL);
+      if (high_temp){
+        high = 1;
+        low = 0;
+      }
+      if (low_temp){
+        low = 1;
+        high = 0;
+      }
+    
+      t_sensor->get_temperature(&temperature);
+      myled = 1;
+      wait(0.1);
+      myled = 0;
+    }
+
+    current_tick = clock();
+    if (((current_tick - previous_tick)/CLOCKS_PER_SEC) >= 2){
+      if (!high && !low){
+        t_sensor->get_temperature(&temperature);
+      }
+      printf("Temp[C]: ");
+      printf("%7s C", print_double(buffer, temperature));
+      if (high){
+        printf(" High temperature detected!(>28C) \r\n");
+        high = 0;
+      } else if (low) {
+        printf(" Low temperature detected!(<22C) \r\n");
+        low = 0;
+      } else {
+        printf("\r\n");
+      }
+      previous_tick = clock();
+    }
+  }
+}
+ 
+void INT_cb() {
+  mems_event = 1;
+}