Andrew's git - arduino-weather.git/blob - libraries/Mitov/Mitov

   1////////////////////////////////////////////////////////////////////////////////
   2//                                                                            //
   3//     This software is supplied under the terms of a license agreement or    //
   4//     nondisclosure agreement with Mitov Software and may not be copied      //
   5//     or disclosed except in accordance with the terms of that agreement.    //
   6//         Copyright(c) 2002-2016 Mitov Software. All Rights Reserved.        //
   7//                                                                            //
   8////////////////////////////////////////////////////////////////////////////////
   9
  10#ifndef _MITOV_AMPLITUDE_METER_h
  11#define _MITOV_AMPLITUDE_METER_h
  12
  13#include <Mitov.h>
  14
  15namespace Mitov
  16{
  17        const float FLT_MAX = 3.4028235E+38;
  18
  19        class AmplitudeMeter : public Mitov::CommonEnableFilter
  20        {
  21                typedef Mitov::CommonEnableFilter inherited;
  22
  23        public:
  24                OpenWire::SourcePin     MinOutputPin;
  25                OpenWire::SourcePin     MaxOutputPin;
  26
  27        protected:
  28                unsigned long   FStartTime = 0;
  29                double                  FAccumulator = 0.0f;
  30                float                   FMin = 0;
  31                float                   FMax = 0;
  32                unsigned long   FCount = 0;
  33
  34        public:
  35                long    Period = 100;
  36
  37        protected:
  38                virtual void DoReceive( void *_Data )
  39                {
  40            if( ! Enabled )
  41                                return;
  42
  43                        float AValue = *(float *)_Data;
  44                        FAccumulator += AValue;
  45                        if( FCount == 0 )
  46                        {
  47                                FMin = AValue;
  48                                FMax = AValue;
  49                        }
  50
  51                        else
  52                        {
  53                                if( AValue < FMin )
  54                                        FMin = AValue;
  55
  56                                if( AValue > FMax )
  57                                        FMax = AValue;
  58
  59                        }
  60
  61                        ++FCount;
  62
  63                        unsigned long ANow = micros();
  64                        unsigned long APeriod = ANow - FStartTime;
  65
  66                        if( APeriod < ((unsigned long)Period) * 1000 )
  67                                return;
  68
  69                        FStartTime = ANow;
  70                        if( FCount == 0 )
  71                                --FCount;
  72
  73                        float AAverage = FAccumulator / FCount;
  74                        FAccumulator = 0;
  75                        FCount = 0;
  76
  77                        OutputPin.Notify( &AAverage );
  78                        MinOutputPin.Notify( &FMin );
  79                        MaxOutputPin.Notify( &FMax );
  80                }
  81
  82                virtual void SystemInit()
  83                {
  84                        FAccumulator = 0;
  85                        FCount = 0;
  86
  87                        inherited::SystemInit();
  88                }
  89
  90        };
  91}
  92
  93#endif