openXsensor/oXs_ms5611.h

   1 #ifndef OXS_MS5611_h
   2 #define OXS_MS5611_h
   3
   4
   5 #include "Arduino.h"
   6 #include "oXs_config_basic.h"
   7 #include "oXs_config_advanced.h"
   8 #include "oXs_config_macros.h"
   9 #include "I2C.h"
  10
  11 struct VARIODATA {
  12   int32_t temperature;     // in 1/100 Celsius
  13   int64_t rawPressure ;  // in 1/10000 mBar so = Pa * 10000
  14   byte SensorState ;
  15   int32_t rawAltitude ; // in cm * 100
  16   struct ONE_MEASUREMENT absoluteAlt ;      // value in cm
  17   struct ONE_MEASUREMENT  relativeAlt ;     // value in cm
  18   int32_t altOffset ;     // in cm
  19   int32_t relativeAltMax ;     // in cm
  20   bool relativeAltMaxAvailable ;
  21   float delaySmooth ; // smoothed delay between 2 altitude calculations
  22   int32_t prevAlt[20] ;   // table contains the 20 latest altitude
  23   byte idxPrevAlt ;       // index of last entry in table
  24   int32_t vSpeed10Sec; // Altitude gain/loose between 10 sec (is calculated and send every 500 msec)
  25   bool vSpeed10SecAvailable ;
  26   float climbRateFloat  ;  // in cm/sec but as float
  27   struct ONE_MEASUREMENT climbRate ; // value in cm /sec = vertical speed
  28   struct ONE_MEASUREMENT sensitivity ;
  29   int sensitivityPpm ;      // sensivity to apply when PPM is used. Value has to be divided by 1000 in order to calculate the smoothing parameter
  30   unsigned long lastCommandMicros ; // used to avoid some task (reading voltage sensor, currentsensor, ..) when barometric data should be soon available for reading
  31 };
  32
  33
  34 class OXS_MS5611 {
  35 public:
  36 #ifdef DEBUG
  37   OXS_MS5611(uint8_t addr, HardwareSerial &print);
  38 #else
  39   OXS_MS5611(uint8_t addr) ;
  40 #endif
  41   VARIODATA varioData ;
  42   //int64_t rawPressure; // in 1/10000 mBar
  43   void setup();
  44   bool  readSensor();
  45
  46   void resetValues();
  47
  48 private:
  49   uint8_t _addr;
  50   unsigned int _calibrationData[7]; // The factory calibration data of the ms5611
  51   uint8_t errorI2C ; //error code returned by I2C::Write and I2C::Read; 0 = no error
  52   bool errorCalibration ; // (true = error)
  53   void SendCommand(byte command);
  54   long getData(byte command, byte del);
  55   void calculateVario() ;
  56   unsigned int low, high;
  57     int32_t D1 ;
  58     int32_t D2 ;
  59     int32_t D2Prev ;
  60     int32_t D2Apply ;
  61     int64_t dT  ;
  62     int32_t TEMP  ;
  63     int64_t OFF, SENS;
  64     int16_t   alt_temp_compensation ;
  65
  66     int32_t altitude  ; // in cm * 100
  67     int32_t altitudeLowPass  ;
  68     int32_t altitudeHighPass  ;
  69     int sensitivityMin ;
  70
  71     unsigned long extended2Micros ; // used to temporarilly save micros() >> 1
  72     unsigned long pressureMicros ; // save time when program send command asking the MS5611 to get the pressure
  73     unsigned long pressureMicrosPrev1 ; // save the previous pressureMicros
  74     unsigned long pressureMicrosPrev2 ; // save the previous of the previous pressureMicros
  75     unsigned long altMillis ;
  76     unsigned long nextAltMillis   ;  // save when Altitude has to be calculated; altitude is available only after 3200 in order to get a stable value (less temperature drift)
  77 //    unsigned long nextAverageAltMillis  ; // save when AverageAltitude has to be calculated
  78
  79     float climbRate2AltFloat  ;
  80
  81     float abs_deltaClimbRate ;
  82
  83 #ifdef DEBUG
  84   HardwareSerial* printer;
  85 #endif
  86 }; // end class OXS_MS5611
  87
  88
  89 #endif // OXS_MS5611
  90
  91
  92
  93