Diff: main.cpp

Revision:

0:0da91bfb31da

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 23 12:09:54 2016 +0000
@@ -0,0 +1,117 @@
+/* Includes */
+
+#include "mbed.h"
+#include "x_nucleo_iks01a1.h"
+#include  "lsm6ds0_class.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+//------------------------------------
+// Hyperterminal configuration
+// 9600 bauds, 8-bit data, no parity
+//------------------------------------
+
+Serial pc(PC_4, PC_5); //TX, RX
+ 
+
+/* Instantiate the expansion board */
+static X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance(D14, D15);
+
+static HumiditySensor *humidity_sensor = mems_expansion_board->ht_sensor;
+static PressureSensor *pressure_sensor = mems_expansion_board->pt_sensor;
+static TempSensor *temp_sensor1 = mems_expansion_board->ht_sensor;
+static TempSensor *temp_sensor2 = mems_expansion_board->pt_sensor;
+
+
+void From_Pressure_mb_To_Altitude_US_Std_Atmosphere_1976_ft(float* Pressure_mb, float* Altitude_ft);
+void From_ft_To_m(float* ft, float* m);
+
+/* Helper function for printing floats & doubles */
+static char *printDouble(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()
+{
+    uint8_t id;
+    float value1, value2;
+    char buffer1[32], buffer2[32];
+    float Altitude_ft;
+    float m;
+
+
+    pc.printf("\r\n--- Starting new run ---\r\n");
+
+    humidity_sensor->ReadID(&id);
+    pc.printf("HTS221  humidity & temperature    = 0x%X\r\n", id);
+    pressure_sensor->ReadID(&id);
+    pc.printf("LPS25H  pressure & temperature    = 0x%X\r\n", id);
+
+    wait(3);
+
+    while(1) {
+        printf("\r\n");
+
+        temp_sensor1->GetTemperature(&value1);
+        humidity_sensor->GetHumidity(&value2);
+        pc.printf("HTS221: [temp] %7s°C,   [hum] %s%%\r\n", printDouble(buffer1, value1), printDouble(buffer2, value2));
+
+        temp_sensor2->GetFahrenheit(&value1);
+        pressure_sensor->GetPressure(&value2);
+        pc.printf("LPS25H: [temp] %7s°F, [press] %smbar\r\n", printDouble(buffer1, value1), printDouble(buffer2, value2));
+        From_Pressure_mb_To_Altitude_US_Std_Atmosphere_1976_ft(&value2,&Altitude_ft);
+        From_ft_To_m(&Altitude_ft,&m);
+        pc.printf("LPS25H: [altitude] %7sfeet, [altitude] %smetres\r\n",printDouble(buffer1, Altitude_ft), printDouble(buffer2, m) );
+
+        pc.printf("---\r\n");
+
+        wait(2);
+    }
+}
+
+void From_Pressure_mb_To_Altitude_US_Std_Atmosphere_1976_ft(float*
+        Pressure_mb, float* Altitude_ft)
+{
+//=(1-(Pressure/1013.25)^0.190284)*145366.45
+    *Altitude_ft = (1-pow(*Pressure_mb/1013.25,0.190284))*145366.45;
+}
+
+void From_ft_To_m(float* ft, float* m)
+{
+    //=feet/3.280839895
+    *m = *ft/3.280839895;
+}