Central Heating controller using the real time clock, PHY module for internet, 1-wire interface for temperature sensors, a system log and a configuration file
Dependencies: net 1-wire lpc1768 crypto clock web fram log
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/media/uploads/andrewboyson/heating.brd
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heating/radiator.c@96:18a3813bb4b5, 2020-10-03 (annotated)
- Committer:
- andrewboyson
- Date:
- Sat Oct 03 14:29:33 2020 +0000
- Revision:
- 96:18a3813bb4b5
- Parent:
- 95:97621bfbedfa
- Child:
- 97:84d58bf7a835
Added override cancel time to UI.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
andrewboyson | 0:3c04f4b47041 | 1 | #include <stdint.h> |
andrewboyson | 0:3c04f4b47041 | 2 | #include <string.h> |
andrewboyson | 0:3c04f4b47041 | 3 | #include <stdbool.h> |
andrewboyson | 0:3c04f4b47041 | 4 | |
andrewboyson | 35:bb8a6d1c034c | 5 | #include "gpio.h" |
andrewboyson | 35:bb8a6d1c034c | 6 | #include "program.h" |
andrewboyson | 35:bb8a6d1c034c | 7 | #include "ds18b20.h" |
andrewboyson | 35:bb8a6d1c034c | 8 | #include "fram.h" |
andrewboyson | 0:3c04f4b47041 | 9 | #include "radiator.h" |
andrewboyson | 95:97621bfbedfa | 10 | #include "clktime.h" |
andrewboyson | 95:97621bfbedfa | 11 | #include "clk.h" |
andrewboyson | 35:bb8a6d1c034c | 12 | #include "led.h" |
andrewboyson | 5:82197a6997fd | 13 | |
andrewboyson | 5:82197a6997fd | 14 | |
andrewboyson | 5:82197a6997fd | 15 | #define RADIATOR_PUMP_DIR FIO2DIR(03) // P2.03 == p23; |
andrewboyson | 5:82197a6997fd | 16 | #define RADIATOR_PUMP_PIN FIO2PIN(03) |
andrewboyson | 5:82197a6997fd | 17 | #define RADIATOR_PUMP_SET FIO2SET(03) |
andrewboyson | 5:82197a6997fd | 18 | #define RADIATOR_PUMP_CLR FIO2CLR(03) |
andrewboyson | 0:3c04f4b47041 | 19 | |
andrewboyson | 95:97621bfbedfa | 20 | static char htgWinter; static int iWinter; |
andrewboyson | 95:97621bfbedfa | 21 | static char htgOverride; static int iOverride; |
andrewboyson | 95:97621bfbedfa | 22 | static char* hallRom; static int iHallRom; |
andrewboyson | 96:18a3813bb4b5 | 23 | static uint8_t overrideCancelHour; static int iOverrideCancelHour; |
andrewboyson | 96:18a3813bb4b5 | 24 | static uint8_t overrideCancelMinute; static int iOverrideCancelMinute; |
andrewboyson | 95:97621bfbedfa | 25 | static int16_t nightTemperature; static int iNightTemperature; |
andrewboyson | 95:97621bfbedfa | 26 | static int16_t frostTemperature; static int iFrostTemperature; |
andrewboyson | 0:3c04f4b47041 | 27 | |
andrewboyson | 95:97621bfbedfa | 28 | bool RadiatorGetWinter () { return (bool)htgWinter; } |
andrewboyson | 95:97621bfbedfa | 29 | bool RadiatorGetOverride () { return (bool)htgOverride; } |
andrewboyson | 95:97621bfbedfa | 30 | uint16_t RadiatorGetHallDS18B20Value () { return DS18B20ValueFromRom(hallRom); } |
andrewboyson | 96:18a3813bb4b5 | 31 | int RadiatorGetOverrideCancelHour () { return (int)overrideCancelHour; } |
andrewboyson | 96:18a3813bb4b5 | 32 | int RadiatorGetOverrideCancelMinute() { return (int)overrideCancelMinute; } |
andrewboyson | 95:97621bfbedfa | 33 | int RadiatorGetNightTemperature () { return (int)nightTemperature; } |
andrewboyson | 95:97621bfbedfa | 34 | int RadiatorGetFrostTemperature () { return (int)frostTemperature; } |
andrewboyson | 0:3c04f4b47041 | 35 | |
andrewboyson | 95:97621bfbedfa | 36 | static void setWinter ( bool value) { htgWinter = (char)value; FramWrite(iWinter, 1, &htgWinter ); } |
andrewboyson | 95:97621bfbedfa | 37 | static void setOverride ( bool value) { htgOverride = (char)value; FramWrite(iOverride, 1, &htgOverride ); } |
andrewboyson | 95:97621bfbedfa | 38 | static void setHallRom ( char* value) { memcpy(hallRom, value, 8); FramWrite(iHallRom, 8, hallRom ); } |
andrewboyson | 96:18a3813bb4b5 | 39 | void RadiatorSetOverrideCancelHour ( int value) { overrideCancelHour = (uint8_t)value, FramWrite(iOverrideCancelHour, 1, &overrideCancelHour ); } |
andrewboyson | 96:18a3813bb4b5 | 40 | void RadiatorSetOverrideCancelMinute( int value) { overrideCancelMinute = (uint8_t)value, FramWrite(iOverrideCancelMinute, 1, &overrideCancelMinute); } |
andrewboyson | 95:97621bfbedfa | 41 | void RadiatorSetNightTemperature ( int value) { nightTemperature = (int16_t)value; FramWrite(iNightTemperature, 2, &nightTemperature ); } |
andrewboyson | 95:97621bfbedfa | 42 | void RadiatorSetFrostTemperature ( int value) { frostTemperature = (int16_t)value; FramWrite(iFrostTemperature, 2, &frostTemperature ); } |
andrewboyson | 0:3c04f4b47041 | 43 | |
andrewboyson | 0:3c04f4b47041 | 44 | static bool outputBeforeOverride = false; |
andrewboyson | 0:3c04f4b47041 | 45 | static void makeOutputBeforeOverride() |
andrewboyson | 0:3c04f4b47041 | 46 | { |
andrewboyson | 0:3c04f4b47041 | 47 | //See if the temperature is too low |
andrewboyson | 0:3c04f4b47041 | 48 | int hallTemp16ths = DS18B20ValueFromRom(hallRom); |
andrewboyson | 0:3c04f4b47041 | 49 | int nightTemp16ths = nightTemperature << 4; |
andrewboyson | 0:3c04f4b47041 | 50 | int frostTemp16ths = frostTemperature << 4; |
andrewboyson | 0:3c04f4b47041 | 51 | |
andrewboyson | 0:3c04f4b47041 | 52 | static bool tooCold = false; //This is static to ride through invalid temperature reads |
andrewboyson | 0:3c04f4b47041 | 53 | if (DS18B20IsValidValue(hallTemp16ths)) |
andrewboyson | 0:3c04f4b47041 | 54 | { |
andrewboyson | 0:3c04f4b47041 | 55 | tooCold = hallTemp16ths < frostTemp16ths; |
andrewboyson | 57:72c1c1357861 | 56 | if (htgWinter) tooCold |= hallTemp16ths < nightTemp16ths; |
andrewboyson | 0:3c04f4b47041 | 57 | } |
andrewboyson | 0:3c04f4b47041 | 58 | |
andrewboyson | 76:3ef2a46c8b1e | 59 | outputBeforeOverride = (htgWinter && ProgramTimerOutput) || tooCold; |
andrewboyson | 0:3c04f4b47041 | 60 | } |
andrewboyson | 96:18a3813bb4b5 | 61 | static void autoCancelOverride() |
andrewboyson | 0:3c04f4b47041 | 62 | { |
andrewboyson | 95:97621bfbedfa | 63 | |
andrewboyson | 95:97621bfbedfa | 64 | //Remove override at 11pm |
andrewboyson | 96:18a3813bb4b5 | 65 | if (ClkTimeIsSet()) |
andrewboyson | 95:97621bfbedfa | 66 | { |
andrewboyson | 95:97621bfbedfa | 67 | struct tm tm; |
andrewboyson | 95:97621bfbedfa | 68 | ClkNowTmLocal(&tm); |
andrewboyson | 96:18a3813bb4b5 | 69 | static bool cancelWasDue = false; |
andrewboyson | 96:18a3813bb4b5 | 70 | bool cancelIsDue = tm.tm_hour == overrideCancelHour && tm.tm_min == overrideCancelMinute; |
andrewboyson | 96:18a3813bb4b5 | 71 | if (cancelIsDue && !cancelWasDue && htgOverride) setOverride(false); |
andrewboyson | 96:18a3813bb4b5 | 72 | cancelWasDue = cancelIsDue; |
andrewboyson | 95:97621bfbedfa | 73 | } |
andrewboyson | 95:97621bfbedfa | 74 | |
andrewboyson | 95:97621bfbedfa | 75 | //Remove override if no longer required |
andrewboyson | 0:3c04f4b47041 | 76 | static bool previousOutput = false; |
andrewboyson | 96:18a3813bb4b5 | 77 | if (previousOutput != outputBeforeOverride && htgOverride) setOverride(false); |
andrewboyson | 0:3c04f4b47041 | 78 | previousOutput = outputBeforeOverride; |
andrewboyson | 0:3c04f4b47041 | 79 | } |
andrewboyson | 0:3c04f4b47041 | 80 | bool RadiatorPump = false; |
andrewboyson | 0:3c04f4b47041 | 81 | static void makeOutputWithOverride() |
andrewboyson | 0:3c04f4b47041 | 82 | { |
andrewboyson | 0:3c04f4b47041 | 83 | RadiatorPump = htgOverride ? !outputBeforeOverride : outputBeforeOverride ; |
andrewboyson | 0:3c04f4b47041 | 84 | } |
andrewboyson | 0:3c04f4b47041 | 85 | |
andrewboyson | 57:72c1c1357861 | 86 | void RadiatorSetWinter(bool value) //Summer is false, Winter is true |
andrewboyson | 0:3c04f4b47041 | 87 | { |
andrewboyson | 57:72c1c1357861 | 88 | if (htgWinter == (char)value) return; //Ignore no change |
andrewboyson | 57:72c1c1357861 | 89 | setWinter(value); //Change to the new value |
andrewboyson | 0:3c04f4b47041 | 90 | |
andrewboyson | 0:3c04f4b47041 | 91 | bool prevOutputBeforeOverride = outputBeforeOverride; |
andrewboyson | 0:3c04f4b47041 | 92 | makeOutputBeforeOverride(); |
andrewboyson | 0:3c04f4b47041 | 93 | |
andrewboyson | 0:3c04f4b47041 | 94 | if (htgOverride) //Only deal with an override that is already set; if it wasn't set don't change it |
andrewboyson | 0:3c04f4b47041 | 95 | { |
andrewboyson | 57:72c1c1357861 | 96 | if (htgWinter) //Summer -> Winter |
andrewboyson | 0:3c04f4b47041 | 97 | { |
andrewboyson | 0:3c04f4b47041 | 98 | if (outputBeforeOverride != prevOutputBeforeOverride) setOverride(0); //Adjust the override to leave the heat as it was - off or on. |
andrewboyson | 0:3c04f4b47041 | 99 | } |
andrewboyson | 0:3c04f4b47041 | 100 | else //Winter -> Summer |
andrewboyson | 0:3c04f4b47041 | 101 | { |
andrewboyson | 0:3c04f4b47041 | 102 | setOverride(0); //turn off the heat. |
andrewboyson | 0:3c04f4b47041 | 103 | } |
andrewboyson | 0:3c04f4b47041 | 104 | } |
andrewboyson | 0:3c04f4b47041 | 105 | |
andrewboyson | 0:3c04f4b47041 | 106 | makeOutputWithOverride(); |
andrewboyson | 0:3c04f4b47041 | 107 | } |
andrewboyson | 0:3c04f4b47041 | 108 | void RadiatorSetOverride(bool value) |
andrewboyson | 0:3c04f4b47041 | 109 | { |
andrewboyson | 0:3c04f4b47041 | 110 | setOverride(value); |
andrewboyson | 0:3c04f4b47041 | 111 | makeOutputBeforeOverride(); |
andrewboyson | 0:3c04f4b47041 | 112 | makeOutputWithOverride(); } |
andrewboyson | 0:3c04f4b47041 | 113 | |
andrewboyson | 57:72c1c1357861 | 114 | void RadiatorChgWinter (){ RadiatorSetWinter (!RadiatorGetWinter ()); } |
andrewboyson | 0:3c04f4b47041 | 115 | void RadiatorChgOverride(){ RadiatorSetOverride(!RadiatorGetOverride()); } |
andrewboyson | 0:3c04f4b47041 | 116 | |
andrewboyson | 0:3c04f4b47041 | 117 | int RadiatorInit() |
andrewboyson | 0:3c04f4b47041 | 118 | { |
andrewboyson | 48:6eac12df3ad5 | 119 | hallRom = DS18B20Roms + 8 * DS18B20RomCount; |
andrewboyson | 48:6eac12df3ad5 | 120 | DS18B20RomSetters[DS18B20RomCount] = setHallRom; |
andrewboyson | 48:6eac12df3ad5 | 121 | DS18B20RomNames[DS18B20RomCount] = "Hall"; |
andrewboyson | 48:6eac12df3ad5 | 122 | DS18B20RomCount++; |
andrewboyson | 48:6eac12df3ad5 | 123 | |
andrewboyson | 0:3c04f4b47041 | 124 | int address; |
andrewboyson | 96:18a3813bb4b5 | 125 | int8_t def1; |
andrewboyson | 95:97621bfbedfa | 126 | int16_t def2; |
andrewboyson | 96:18a3813bb4b5 | 127 | def1 = 0; address = FramLoad( 1, &htgWinter, &def1); if (address < 0) return -1; iWinter = address; |
andrewboyson | 96:18a3813bb4b5 | 128 | def1 = 0; address = FramLoad( 1, &htgOverride, &def1); if (address < 0) return -1; iOverride = address; |
andrewboyson | 96:18a3813bb4b5 | 129 | address = FramLoad( 8, hallRom, 0); if (address < 0) return -1; iHallRom = address; |
andrewboyson | 96:18a3813bb4b5 | 130 | def1 = 23; address = FramLoad( 1, &overrideCancelHour, &def1); if (address < 0) return -1; iOverrideCancelHour = address; |
andrewboyson | 96:18a3813bb4b5 | 131 | def1 = 0; address = FramLoad( 1, &overrideCancelMinute, &def1); if (address < 0) return -1; iOverrideCancelMinute = address; |
andrewboyson | 95:97621bfbedfa | 132 | FramAllocate(2); //Spare two bytes |
andrewboyson | 96:18a3813bb4b5 | 133 | def2 = 15; address = FramLoad( 2, &nightTemperature, &def2); if (address < 0) return -1; iNightTemperature = address; |
andrewboyson | 96:18a3813bb4b5 | 134 | def2 = 8; address = FramLoad( 2, &frostTemperature, &def2); if (address < 0) return -1; iFrostTemperature = address; |
andrewboyson | 0:3c04f4b47041 | 135 | |
andrewboyson | 5:82197a6997fd | 136 | RADIATOR_PUMP_DIR = 1; //Set the direction to 1 == output |
andrewboyson | 0:3c04f4b47041 | 137 | |
andrewboyson | 0:3c04f4b47041 | 138 | return 0; |
andrewboyson | 0:3c04f4b47041 | 139 | } |
andrewboyson | 0:3c04f4b47041 | 140 | void RadiatorMain() |
andrewboyson | 0:3c04f4b47041 | 141 | { |
andrewboyson | 0:3c04f4b47041 | 142 | //Make the radiator output |
andrewboyson | 0:3c04f4b47041 | 143 | makeOutputBeforeOverride(); |
andrewboyson | 96:18a3813bb4b5 | 144 | autoCancelOverride(); //Do this after making the outputt as it uses that information |
andrewboyson | 0:3c04f4b47041 | 145 | makeOutputWithOverride(); |
andrewboyson | 0:3c04f4b47041 | 146 | |
andrewboyson | 0:3c04f4b47041 | 147 | //Pump output |
andrewboyson | 5:82197a6997fd | 148 | if (RadiatorPump) RADIATOR_PUMP_SET; |
andrewboyson | 5:82197a6997fd | 149 | else RADIATOR_PUMP_CLR; |
andrewboyson | 0:3c04f4b47041 | 150 | |
andrewboyson | 0:3c04f4b47041 | 151 | } |