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

Thermometers.h@20:7933076df5af, 2015-10-13 (annotated)

Committer:
Bobty
Date:
Tue Oct 13 18:35:20 2015 +0000
Revision:
20:7933076df5af
Parent:
16:89778849e9f7 
Improved logging and added a mutex to avoid clashes on SD card access

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 9:0e103c2f869a 1 // Handles Thermometers
Bobty 9:0e103c2f869a 2 // Rob Dobson, 2015
Bobty 9:0e103c2f869a 3
Bobty 9:0e103c2f869a 4 #ifndef Thermometers__H
Bobty 9:0e103c2f869a 5 #define Thermometers__H
Bobty 9:0e103c2f869a 6
Bobty 9:0e103c2f869a 7 #include "RdDS18B20.h"
Bobty 20:7933076df5af 8 #include "Logger.h"
Bobty 9:0e103c2f869a 9
Bobty 9:0e103c2f869a 10 struct TemperatureValue
Bobty 9:0e103c2f869a 11 {
Bobty 9:0e103c2f869a 12 time_t timeStamp;
Bobty 9:0e103c2f869a 13 char address[DS18B20::ONEWIRE_ADDR_STRLEN];
Bobty 9:0e103c2f869a 14 double tempInCentigrade;
Bobty 9:0e103c2f869a 15 };
Bobty 9:0e103c2f869a 16
Bobty 9:0e103c2f869a 17 class Thermometers
Bobty 9:0e103c2f869a 18 {
Bobty 9:0e103c2f869a 19 public:
Bobty 20:7933076df5af 20 Thermometers(int numTempSensorPins, const PinName tempSensorPins[], int serviceIntervalInMs, Logger &logger);
Bobty 9:0e103c2f869a 21 void Init();
Bobty 9:0e103c2f869a 22 void Service();
Bobty 9:0e103c2f869a 23 int GetTemperatureValues(int maxTempValues, TemperatureValue* tempValues, int maxAgeInSecs);
Bobty 9:0e103c2f869a 24 static const int numSecondsBetweenThermReadings = 10;
Bobty 9:0e103c2f869a 25 static const int timeForThermReadingInSecs = 2;
Bobty 9:0e103c2f869a 26 static const int reGetThermometerAddressesAfterNumReadings = 100;
Bobty 9:0e103c2f869a 27 static const int MAX_ONEWIRE_BUSES = 1;
Bobty 9:0e103c2f869a 28 static const int MAX_THERMOMETERS = 8;
Bobty 9:0e103c2f869a 29
Bobty 9:0e103c2f869a 30 private:
Bobty 9:0e103c2f869a 31 // Thermometer info
Bobty 9:0e103c2f869a 32 int _numTempSensorPins;
Bobty 9:0e103c2f869a 33 const PinName* _tempSensorPins;
Bobty 9:0e103c2f869a 34 int _numThermometerBuses;
Bobty 9:0e103c2f869a 35 DS18B20* _thermometerBuses[MAX_ONEWIRE_BUSES];
Bobty 9:0e103c2f869a 36 int _serviceIntervalInMs;
Bobty 9:0e103c2f869a 37
Bobty 9:0e103c2f869a 38 // Counters for state machine
Bobty 9:0e103c2f869a 39 int _countForThermReadings;
Bobty 9:0e103c2f869a 40 int _countForGetThermometerAddresses;
Bobty 16:89778849e9f7 41
Bobty 16:89778849e9f7 42 // DEBUG
Bobty 16:89778849e9f7 43 int _failReadCount;
Bobty 16:89778849e9f7 44 int _failAddrCount;
Bobty 20:7933076df5af 45 Logger &_logger;
Bobty 9:0e103c2f869a 46 };
Bobty 9:0e103c2f869a 47
Bobty 9:0e103c2f869a 48 #endif