pyonta cansat / MPL3115

test

Dependents:   FM_integration_copy

Fork of MPL3115A2 by Michael Lange

Altitude.h@0:beb43bc3d6d4, 2014-04-01 (annotated)

Committer:
sophtware
Date:
Tue Apr 01 21:35:23 2014 +0000
Revision:
0:beb43bc3d6d4
Child:
2:2ebc9c0d4a54
Initial Checkin

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sophtware 0:beb43bc3d6d4 1 /*
sophtware 0:beb43bc3d6d4 2 MPL3115A2 Barometric Pressure and Tempurature Sensor Library
sophtware 0:beb43bc3d6d4 3 By: Michael Lange
sophtware 0:beb43bc3d6d4 4 Date: March 31, 2014
sophtware 0:beb43bc3d6d4 5 License: This code is public domain.
sophtware 0:beb43bc3d6d4 6
sophtware 0:beb43bc3d6d4 7 This class encapsulates an altitude reading from the sensor.
sophtware 0:beb43bc3d6d4 8
sophtware 0:beb43bc3d6d4 9 */
sophtware 0:beb43bc3d6d4 10
sophtware 0:beb43bc3d6d4 11
sophtware 0:beb43bc3d6d4 12 #ifndef ALTITUDE_H
sophtware 0:beb43bc3d6d4 13 #define ALTITUDE_H
sophtware 0:beb43bc3d6d4 14
sophtware 0:beb43bc3d6d4 15 #include "mbed.h"
sophtware 0:beb43bc3d6d4 16
sophtware 0:beb43bc3d6d4 17 // Casting truncates, therefore negative numbers become positive.
sophtware 0:beb43bc3d6d4 18 // This will only cast properly in the range -128 to 127.
sophtware 0:beb43bc3d6d4 19 #define float_to_char(x) (((x)<0)?(-(char)(x)):((char)(x)))
sophtware 0:beb43bc3d6d4 20
sophtware 0:beb43bc3d6d4 21 class Altitude
sophtware 0:beb43bc3d6d4 22 {
sophtware 0:beb43bc3d6d4 23 public:
sophtware 0:beb43bc3d6d4 24
sophtware 0:beb43bc3d6d4 25 static const int size = 3;
sophtware 0:beb43bc3d6d4 26 enum unitsType { METERS, FEET };
sophtware 0:beb43bc3d6d4 27
sophtware 0:beb43bc3d6d4 28 Altitude();
sophtware 0:beb43bc3d6d4 29 Altitude(float a, unitsType units = FEET);
sophtware 0:beb43bc3d6d4 30 Altitude(const char* compressed);
sophtware 0:beb43bc3d6d4 31 Altitude(const char msb, const char csb, const char lsb);
sophtware 0:beb43bc3d6d4 32
sophtware 0:beb43bc3d6d4 33 operator char*(void) { return _compressed; }
sophtware 0:beb43bc3d6d4 34 operator float(void) { return _altitude; }
sophtware 0:beb43bc3d6d4 35
sophtware 0:beb43bc3d6d4 36 float altitude(unitsType units = FEET);
sophtware 0:beb43bc3d6d4 37 void setAltitude();
sophtware 0:beb43bc3d6d4 38 void setAltitude(const char* compressed);
sophtware 0:beb43bc3d6d4 39 void setAltitude(const char msb, const char csb, const char lsb);
sophtware 0:beb43bc3d6d4 40 void setAltitude(float a, unitsType units = FEET);
sophtware 0:beb43bc3d6d4 41
sophtware 0:beb43bc3d6d4 42 const char* print(unitsType units = FEET);
sophtware 0:beb43bc3d6d4 43
sophtware 0:beb43bc3d6d4 44 static float MetersToFeet(float meters) { return meters * 3.28084; }
sophtware 0:beb43bc3d6d4 45 static float FeetToMeters(float feet) { return feet / 3.28084; }
sophtware 0:beb43bc3d6d4 46
sophtware 0:beb43bc3d6d4 47 private:
sophtware 0:beb43bc3d6d4 48 float _altitude;
sophtware 0:beb43bc3d6d4 49 char _compressed[3];
sophtware 0:beb43bc3d6d4 50 char _printBuffer[9];
sophtware 0:beb43bc3d6d4 51 };
sophtware 0:beb43bc3d6d4 52
sophtware 0:beb43bc3d6d4 53 #endif // ALTITUDE_H