Tasmota/tasmota/xdrv_48_timeprop.ino

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/*
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xdrv_48_timeprop.ino - Timeprop support for Sonoff-Tasmota
Copyright (C) 2021 Colin Law and Thomas Herrmann
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_TIMEPROP
#ifndef FIRMWARE_MINIMAL
/*********************************************************************************************\
* Code to drive one or more relays in a time proportioned manner give a
* required power value.
*
* Given required power values in the range 0.0 to 1.0 the relays will be
* driven on/off in such that the average power suppled will represent
* the required power.
* The cycle time is configurable. If, for example, the
* period is set to 10 minutes and the power input is 0.2 then the output will
* be on for two minutes in every ten minutes.
*
* A value for actuator dead time may be provided. If you have a device that
* takes a significant time to open/close then set this to the average of the
* open and close times. The algorithim will then adjust the output timing
* accordingly to ensure that the output is not switched more rapidly than
* the actuator can cope with.
*
* A facility to invert the output is provided which can be useful when used in
* refrigeration processes and similar.
*
* In the case where only one relay is being driven the power value is set by
* writing the value to the mqtt topic cmnd/timeprop_setpower_0. If more than
* one relay is being driven (as might be the case for a heat/cool application
* where one relay drives the heater and the other the cooler) then the power
* for the second relay is written to topic cmnd/timeprop_setpower_1 and so on.
*
* To cope with the problem of temporary wifi failure etc a
* TIMEPROP_MAX_UPDATE_INTERVALS value is available. This can be set to the max
* expected time between power updates and if this time is exceeded then the
* power will fallback to a given safe value until a new value is provided. Set
* the interval to 0 to disable this feature.
*
* Usage:
* Place this file in the sonoff folder.
* Clone the library https://github.com/colinl/process-control.git from Github
* into a subfolder of lib.
* In user_config.h or user_config_override.h for a single relay, include
* code as follows:
#define USE_TIMEPROP // include the timeprop feature (+1.2k)
// for single output
#define TIMEPROP_NUM_OUTPUTS 1 // how many outputs to control (with separate alogorithm for each)
#define TIMEPROP_CYCLETIMES 60 // cycle time seconds
#define TIMEPROP_DEADTIMES 0 // actuator action time seconds
#define TIMEPROP_OPINVERTS false // whether to invert the output
#define TIMEPROP_FALLBACK_POWERS 0 // falls back to this if too long betwen power updates
#define TIMEPROP_MAX_UPDATE_INTERVALS 120 // max no secs that are allowed between power updates (0 to disable)
#define TIMEPROP_RELAYS 1 // which relay to control 1:8
* or for two relays:
#define USE_TIMEPROP // include the timeprop feature (+1.2k)
// for single output
#define TIMEPROP_NUM_OUTPUTS 2 // how many outputs to control (with separate alogorithm for each)
#define TIMEPROP_CYCLETIMES 60, 10 // cycle time seconds
#define TIMEPROP_DEADTIMES 0, 0 // actuator action time seconds
#define TIMEPROP_OPINVERTS false, false // whether to invert the output
#define TIMEPROP_FALLBACK_POWERS 0, 0 // falls back to this if too long betwen power updates
#define TIMEPROP_MAX_UPDATE_INTERVALS 120, 120 // max no secs that are allowed between power updates (0 to disable)
#define TIMEPROP_RELAYS 1, 2 // which relay to control 1:8
* Publish values between 0 and 1 to the topic(s) described above
*
**/
#define D_CMND_TIMEPROP "timeprop_"
#define D_CMND_TIMEPROP_SETPOWER "setpower_" // add index no on end (0:8) and data is power 0:1
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#include "Timeprop.h"
enum TimepropCommands { CMND_TIMEPROP_SETPOWER };
const char kTimepropCommands[] PROGMEM = D_CMND_TIMEPROP_SETPOWER;
static Timeprop timeprops[TIMEPROP_NUM_OUTPUTS];
static int relayNos[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_RELAYS};
static long currentRelayStates = 0; // current actual relay states. Bit 0 first relay
#ifndef TIMEPROP_NUM_OUTPUTS
#define TIMEPROP_NUM_OUTPUTS 1 // how many outputs to control (with separate alogorithm for each)
#endif
#ifndef TIMEPROP_CYCLETIMES
#define TIMEPROP_CYCLETIMES 60 // cycle time seconds
#endif
#ifndef TIMEPROP_DEADTIMES
#define TIMEPROP_DEADTIMES 0 // actuator action time seconds
#endif
#ifndef TIMEPROP_OPINVERTS
#define TIMEPROP_OPINVERTS false // whether to invert the output
#endif
#ifndef TIMEPROP_FALLBACK_POWERS
#define TIMEPROP_FALLBACK_POWERS 0 // falls back to this if too long betwen power updates
#endif
#ifndef TIMEPROP_MAX_UPDATE_INTERVALS
#define TIMEPROP_MAX_UPDATE_INTERVALS 120 // max no secs that are allowed between power updates (0 to disable)
#endif
#ifndef TIMEPROP_RELAYS
#define TIMEPROP_RELAYS 1 // which relay to control 1:8
#endif
struct {
Timeprop timeprops[TIMEPROP_NUM_OUTPUTS];
int relay_nos[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_RELAYS};
long current_relay_states = 0; // current actual relay states. Bit 0 first relay
long current_time_secs = 0; // a counter that counts seconds since initialisation
} Tprop;
/* call this from elsewhere if required to set the power value for one of the timeprop instances */
/* index specifies which one, 0 up */
void TimepropSetPower(int index, float power) {
if (index >= 0 && index < TIMEPROP_NUM_OUTPUTS) {
Tprop.timeprops[index].setPower( power, Tprop.current_time_secs);
}
}
void TimepropInit(void) {
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// AddLog(LOG_LEVEL_INFO, PSTR("TPR: Timeprop Init"));
int cycleTimes[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_CYCLETIMES};
int deadTimes[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_DEADTIMES};
int opInverts[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_OPINVERTS};
int fallbacks[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_FALLBACK_POWERS};
int maxIntervals[TIMEPROP_NUM_OUTPUTS] = {TIMEPROP_MAX_UPDATE_INTERVALS};
for (int i = 0; i < TIMEPROP_NUM_OUTPUTS; i++) {
Tprop.timeprops[i].initialise(cycleTimes[i], deadTimes[i], opInverts[i], fallbacks[i],
maxIntervals[i], Tprop.current_time_secs);
}
}
void TimepropEverySecond(void) {
Tprop.current_time_secs++; // increment time
for (int i=0; i<TIMEPROP_NUM_OUTPUTS; i++) {
int newState = Tprop.timeprops[i].tick(Tprop.current_time_secs);
if (newState != bitRead(Tprop.current_relay_states, Tprop.relay_nos[i]-1)){
// remove the third parameter below if using tasmota prior to v6.0.0
ExecuteCommandPower(Tprop.relay_nos[i], newState,SRC_IGNORE);
}
}
}
// called by the system each time a relay state is changed
void TimepropXdrvPower(void) {
// for a single relay the state is in the lsb of index, I have think that for
// multiple outputs then succesive bits will hold the state but have not been
// able to test that
Tprop.current_relay_states = XdrvMailbox.index;
}
/* struct XDRVMAILBOX { */
/* uint16_t valid; */
/* uint16_t index; */
/* uint16_t data_len; */
/* int16_t payload; */
/* char *topic; */
/* char *data; */
/* } XdrvMailbox; */
// To get here post with topic cmnd/timeprop_setpower_n where n is index into timeprops 0:7
bool TimepropCommand()
{
char command [CMDSZ];
bool serviced = true;
uint8_t ua_prefix_len = strlen(D_CMND_TIMEPROP); // to detect prefix of command
/*
AddLog(LOG_LEVEL_INFO, PSTR("Command called: "
"index: %d data_len: %d payload: %d topic: %s data: %s"),
XdrvMailbox.index,
XdrvMailbox.data_len,
XdrvMailbox.payload,
(XdrvMailbox.payload >= 0 ? XdrvMailbox.topic : ""),
(XdrvMailbox.data_len >= 0 ? XdrvMailbox.data : ""));
*/
if (0 == strncasecmp_P(XdrvMailbox.topic, PSTR(D_CMND_TIMEPROP), ua_prefix_len)) {
// command starts with timeprop_
int command_code = GetCommandCode(command, sizeof(command), XdrvMailbox.topic + ua_prefix_len, kTimepropCommands);
if (CMND_TIMEPROP_SETPOWER == command_code) {
/*
AddLog(LOG_LEVEL_INFO, PSTR("Timeprop command timeprop_setpower: "
"index: %d data_len: %d payload: %d topic: %s data: %s"),
XdrvMailbox.index,
XdrvMailbox.data_len,
XdrvMailbox.payload,
(XdrvMailbox.payload >= 0 ? XdrvMailbox.topic : ""),
(XdrvMailbox.data_len >= 0 ? XdrvMailbox.data : ""));
*/
if (XdrvMailbox.index >=0 && XdrvMailbox.index < TIMEPROP_NUM_OUTPUTS) {
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timeprops[XdrvMailbox.index].setPower( atof(XdrvMailbox.data), Tprop.current_time_secs );
}
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Response_P(PSTR("{\"" D_CMND_TIMEPROP D_CMND_TIMEPROP_SETPOWER "%d\":\"%s\"}"), XdrvMailbox.index, XdrvMailbox.data);
}
else {
serviced = false;
}
} else {
serviced = false;
}
return serviced;
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
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#define XDRV_48 48
bool Xdrv48(byte function) {
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bool result = false;
switch (function) {
case FUNC_INIT:
TimepropInit();
break;
case FUNC_EVERY_SECOND:
TimepropEverySecond();
break;
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case FUNC_COMMAND:
result = TimepropCommand();
break;
case FUNC_SET_POWER:
TimepropXdrvPower();
break;
}
return result;
}
#endif // FIRMWARE_MINIMAL
#endif // USE_TIMEPROP