mikroSDK library for Air Quality 5 click

Author: KacaPerendic

library/__airq5_driver.c

@@ -72,8 +72,6 @@ const uint16_t _AIRQ5_CONFIG_COMP_QUE_4CONV   = 0x0002;
 const uint16_t _AIRQ5_CONFIG_COMP_QUE_0CONV   = 0x0003;
 
 /* ---------------------------------------------------------------- VARIABLES */
-#define _DBL_MAX_       3.40282347e+38
-#define _FRNDINT(x)   ((double)(long)(x))
 
 #ifdef   __AIRQ5_DRV_I2C__
 static uint8_t _slaveAddress;
@@ -83,214 +81,9 @@ static uint16_t _dataConfig = 0x8583;
 
 /* -------------------------------------------- PRIVATE FUNCTION DECLARATIONS */
 
-static double _floor(double x);
-static double _frexp(double value, int * eptr);
-static double _ldexp(double value, int newexp);
-static double _eval_poly(double x, const double code * d, int n);
-static double _exp(double x);
-static double _log(double x);
-static double _myPow(double x, double y);
 
-/* --------------------------------------------- PRIVATE FUNCTION DEFINITIONS */
-
-#if defined  __MIKROC_PRO_FOR_ARM__  ||  __MIKROC_PRO_FOR_PIC32__ || __MIKROC_PRO_FOR_DSPIC__ || __MIKROC_PRO_FOR_AVR__ || __MIKROC_PRO_FOR_FT90x__
-static union both
-{
-        struct flt
-        {
-                unsigned char   mant[2];
-                unsigned        hmant:7;
-                unsigned        exp:8;
-                unsigned        sign:1;
-
-        }        flt;
-        double        fl;
-};
-
-//--------------
-static double _frexp(double value, int * eptr) {
-  union both uv;
-  volatile int bb;
-
-  uv.fl = value;
-  bb = uv.flt.exp - 126;
-  *eptr = bb;
-  uv.flt.exp = 126;
- return uv.fl;
-
-}
-
-//--------------
-static double _ldexp(double value, int newexp) {
-   union both uv;
-
-  uv.fl = value;
-  newexp += uv.flt.exp;
-  if (newexp < 0)
-    return 0.0;
-  else
-    if (newexp > 255)
-      if (value < 0.0)
-        return -_DBL_MAX_;
-      else
-        return _DBL_MAX_;
-    else
-      uv.flt.exp = newexp;
-  return uv.fl;
-
-}
-#endif
-
-#if defined __MIKROC_PRO_FOR_PIC__
-static double _frexp(double value, int * eptr)
-{
-    char *     pom;
-    pom = &value;
-    *eptr = pom[3] - 126;
-    pom[3] = 126;
-    return value;
-}
-
-static double _ldexp(double value, int newexp)
-{
-    char * pom;
-    pom = &value;
-    newexp += pom[3];
-    if (newexp < 0)
-        return 0.0;
-    else if (newexp > 255)
-        if (value < 0.0)
-            return -_DBL_MAX_;
-        else
-            return _DBL_MAX_;
-    else
-        pom[3] = newexp;
-  return value;
-}
-#endif
 
-
-static double _floor(double x) {
-  double    i;
-  int       expon;
-
-  expon = ((*(unsigned long *)&x >> 23) & 255);
-  expon = expon- 127;
-  if(expon < 0)
-    if (x < 0.0)
-      return -1.0;
-    else
-      return  0.0;
-  if((unsigned)expon > sizeof(double) * 8 - 8)
-    return x;           /* already an integer */
-  i = _FRNDINT(x);
-
-  if(i > x)
-    return i - 1.0;
-  return i;
-}
-
-
-static double _eval_poly(double x, const double code * d, int n) {
-  double res;
-
-  res = d[n];
-  while(n)
-    res = x * res + d[--n];
-
-  return res;
-}
-
-static double _exp(double x) {
-  int       exp;
-  char     sign;
-
-  const static double coeff[] = {
-    1.0000000000e+00,
-    6.9314718056e-01,
-    2.4022650695e-01,
-    5.5504108945e-02,
-    9.6181261779e-03,
-    1.3333710529e-03,
-    1.5399104432e-04,
-    1.5327675257e-05,
-    1.2485143336e-06,
-    1.3908092221e-07,
-  };
-
-  if(x == 0.0)
-    return 1.0;
-  if (x > 89.416)    //too big?
-    return _DBL_MAX_;
-  if (x < -87.33655)    //too small?
-    return 0.0;
-  sign = x < 0.0;
-  if(sign)
-    x = -x;
-  x *= 1.4426950409;            // convert to log2 //
-  exp = (int)_floor(x);
-  x -= (double)exp;
-  x = _ldexp(_eval_poly(x, coeff, sizeof coeff/sizeof coeff[0] - 1), exp);
-  if(sign) {
-    if (x == _DBL_MAX_)
-      return 0.0;
-    return 1.0/x;
-  }
-  return x;
-}
-
-
-//-------------- Returns natural logarithm of given argument - ln(x)
-static double _log(double x) {
-  int       exp;
-  static const double coeff[] = {
-     0.0000000001,      // a0 //
-     0.9999964239,      // a1 //
-    -0.4998741238,      // a2 //
-     0.3317990258,      // a3 //
-    -0.2407338084,      // a4 //
-     0.1676540711,      // a5 //
-    -0.0953293897,      // a6 //
-     0.0360884937,      // a7 //
-    -0.0064535442,      // a8 //
-  };
-
-  // zero or -ve arguments are not defined //
-
-  if(x <= 0.0)
-            return 0.0;
-  x = _frexp(x, &exp) * 2.0 - 1.0;
-  exp--;
-  x = _eval_poly(x, coeff, sizeof coeff/sizeof coeff[0] - 1);
-  return x + 0.69314718055995 * exp;
-  //return x +   0.68768932874451 * exp;
-}
-
-//-------------- Returns argument x raised to power of argument y
-static double _myPow(double x, double y) {
-  unsigned char sign = 0;       // Promenjeno unsigned int u
-                                // unsigned char (optimizacija)  MZ 11.08.2008.
-  long yi;
-
-  if(y == 0.0)
-    return 1.0;
-  if(x == 0.0)
-    return 0.0;
-  if(x < 0.0) {
-    yi = (long)y;
-    if((double)yi != y)
-      return 0.0;
-    sign = yi & 1;
-    x = -x;
-  }
-  x = _log(x);
-  x = x*y;
-  x = _exp(x);
-
-  if(sign)
-    return -x;
-  return x;
-}
+/* --------------------------------------------- PRIVATE FUNCTION DEFINITIONS */
 
 
 

library/__airq5_driver.h

@@ -192,40 +192,6 @@ uint16_t airq5_readSensorData(uint16_t channel_data);
  */
 uint8_t airq5_getInterrupt();
 
-/**
- * @brief Functions for calculation NO2 sensor data
- *
- * @param[in] NO2_Data   NO2 data which be calculation
- * @retval NO2 data in ppm
- */
-float airq5_getNO2Data(uint16_t NO2_data);
-
-/**
- * @brief Functions for calculation CO sensor data
- *
- * @param[in] CO_Data   CO data which be calculation
- * @param[out] dataBuffer  Buffer in which data is stored
- *
- * Data Buffer:
-      - dataBuffer[0] - CO in ppm
-      - dataBuffer[1] - CH4 in ppm
-      - dataBuffer[2] - H2 in ppm
-      - dataBuffer[3] - C2H5OH in ppm
- */
-void airq5_getCOData(uint16_t CO_Data, float *dataBuffer);
-
-/**
- * @brief Functions for calculation NH3 sensor data
- *
- * @param[in] NH3_Data   NH3 data which be calculation
- * @param[out] dataBuffer  Buffer in which data is stored
- *
- * Data Buffer:
-      - dataBuffer[0] - NH3 in ppm
-      - dataBuffer[1] - C3H8 in ppm
-      - dataBuffer[2] - C4H10 in ppm
- */
-void airq5_getNH3Data(uint16_t NH3_Data, float *dataBuffer);