Rob Dobson / RdGasUseMonitor

Monitor for central heating system (e.g. 2zones+hw) Supports up to 15 temp probes (DS18B20/DS18S20) 3 valve monitors Gas pulse meter recording Use stand-alone or with nodeEnergyServer See http://robdobson.com/2015/09/central-heating-monitor

Dependencies:   EthernetInterfacePlusHostname NTPClient Onewire RdWebServer SDFileSystem-RTOS mbed-rtos mbed-src

GasUseCounter.h@5:5bccf48799d4, 2015-02-17 (annotated)

Committer:
Bobty
Date:
Tue Feb 17 21:33:39 2015 +0000
Revision:
5:5bccf48799d4
Child:
19:0367cb46d003
Tidied up - but is unstable - web server crashes after some time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 5:5bccf48799d4 1 #ifndef __GASUSECOUNTER__H
Bobty 5:5bccf48799d4 2 #define __GASUSECOUNTER__H
Bobty 5:5bccf48799d4 3 #include "mbed.h"
Bobty 5:5bccf48799d4 4 #include "PulsePin.h"
Bobty 5:5bccf48799d4 5 #include "SDFileSystem.h"
Bobty 5:5bccf48799d4 6 #include <RawSerial.h>
Bobty 5:5bccf48799d4 7
Bobty 5:5bccf48799d4 8 const int MAX_GAS_COUNT_STR_LEN = 50;
Bobty 5:5bccf48799d4 9 const int MAX_PULSES_BEFORE_STORE_NV = 1; // Store at each pulse
Bobty 5:5bccf48799d4 10
Bobty 5:5bccf48799d4 11 class GasUseCounter
Bobty 5:5bccf48799d4 12 {
Bobty 5:5bccf48799d4 13 public:
Bobty 5:5bccf48799d4 14 // Constructor
Bobty 5:5bccf48799d4 15 GasUseCounter(const char* gasUseFilename, DigitalIn& gasPulsePin, RawSerial &pc) :
Bobty 5:5bccf48799d4 16 _gasPulsePin(gasPulsePin), _pc(pc)
Bobty 5:5bccf48799d4 17 {
Bobty 5:5bccf48799d4 18 _gasUseFilename = gasUseFilename;
Bobty 5:5bccf48799d4 19 _lastWrittenGasCount = 0;
Bobty 5:5bccf48799d4 20 _pulseDetector = new PulsePin(_gasPulsePin, false, 200);
Bobty 5:5bccf48799d4 21 }
Bobty 5:5bccf48799d4 22
Bobty 5:5bccf48799d4 23 // Init (get count from NV)
Bobty 5:5bccf48799d4 24 void Init();
Bobty 5:5bccf48799d4 25
Bobty 5:5bccf48799d4 26 // Callback from web server to handle getting current gas count
Bobty 5:5bccf48799d4 27 char* getGasUseCallback(char* cmdStr, char* argStr);
Bobty 5:5bccf48799d4 28
Bobty 5:5bccf48799d4 29 // Service function to detect pulses
Bobty 5:5bccf48799d4 30 bool Service();
Bobty 5:5bccf48799d4 31
Bobty 5:5bccf48799d4 32 // Read/Write current gas count
Bobty 5:5bccf48799d4 33 void GetGasCountFromSD();
Bobty 5:5bccf48799d4 34 void WriteGasCountToSD();
Bobty 5:5bccf48799d4 35
Bobty 5:5bccf48799d4 36 // Get Count
Bobty 5:5bccf48799d4 37 int GetCount()
Bobty 5:5bccf48799d4 38 {
Bobty 5:5bccf48799d4 39 return _pulseDetector->GetPulseCount();
Bobty 5:5bccf48799d4 40 }
Bobty 5:5bccf48799d4 41
Bobty 5:5bccf48799d4 42 // Set Count
Bobty 5:5bccf48799d4 43 void SetCount(int gasUseCount)
Bobty 5:5bccf48799d4 44 {
Bobty 5:5bccf48799d4 45 _pulseDetector->SetPulseCount(gasUseCount);
Bobty 5:5bccf48799d4 46 WriteGasCountToSD();
Bobty 5:5bccf48799d4 47 }
Bobty 5:5bccf48799d4 48
Bobty 5:5bccf48799d4 49 // Get inter-pulse time
Bobty 5:5bccf48799d4 50 int GetPulseRateMs()
Bobty 5:5bccf48799d4 51 {
Bobty 5:5bccf48799d4 52 return _pulseDetector->GetPulseRateMs();
Bobty 5:5bccf48799d4 53 }
Bobty 5:5bccf48799d4 54
Bobty 5:5bccf48799d4 55 private:
Bobty 5:5bccf48799d4 56 // Gas use filename for non-volatile
Bobty 5:5bccf48799d4 57 const char* _gasUseFilename;
Bobty 5:5bccf48799d4 58 int _curGasCount;
Bobty 5:5bccf48799d4 59 int _lastWrittenGasCount;
Bobty 5:5bccf48799d4 60 char _gasCountStr [MAX_GAS_COUNT_STR_LEN];
Bobty 5:5bccf48799d4 61 DigitalIn& _gasPulsePin;
Bobty 5:5bccf48799d4 62 PulsePin* _pulseDetector;
Bobty 5:5bccf48799d4 63 RawSerial& _pc;
Bobty 5:5bccf48799d4 64 };
Bobty 5:5bccf48799d4 65
Bobty 5:5bccf48799d4 66
Bobty 5:5bccf48799d4 67
Bobty 5:5bccf48799d4 68
Bobty 5:5bccf48799d4 69 #endif