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EMS-ESP32/src/roomcontrol.cpp

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/*
* EMS-ESP - https://github.com/emsesp/EMS-ESP
* Copyright 2020-2023 Paul Derbyshire
*
* 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/>.
*/
#include "roomcontrol.h"
namespace emsesp {
// init statics
bool Roomctrl::switch_off_[HCS] = {false, false, false, false};
uint32_t Roomctrl::rc_time_[HCS] = {0, 0, 0, 0};
int16_t Roomctrl::remotetemp_[HCS] = {EMS_VALUE_SHORT_NOTSET, EMS_VALUE_SHORT_NOTSET, EMS_VALUE_SHORT_NOTSET, EMS_VALUE_SHORT_NOTSET};
uint8_t Roomctrl::remotehum_[HCS] = {EMS_VALUE_UINT_NOTSET, EMS_VALUE_UINT_NOTSET, EMS_VALUE_UINT_NOTSET, EMS_VALUE_UINT_NOTSET};
uint8_t Roomctrl::sendcnt[] = {0, 0, 0, 0};
uint8_t Roomctrl::type_ = RC20;
/**
* set the temperature,
*/
void Roomctrl::set_remotetemp(const uint8_t type, const uint8_t hc, const int16_t temp) {
if (hc >= HCS || (type != RC20 && type != FB10 && type != RC100H && type != SENSOR)) {
return;
}
type_ = type;
if (remotetemp_[hc] != EMS_VALUE_SHORT_NOTSET && temp == EMS_VALUE_SHORT_NOTSET) {
switch_off_[hc] = true;
}
if (remotetemp_[hc] != temp) {
rc_time_[hc] = uuid::get_uptime() - SEND_INTERVAL; // send now
sendcnt[hc] = 0;
}
remotetemp_[hc] = temp;
}
void Roomctrl::set_remotehum(const uint8_t type, const uint8_t hc, const int8_t hum) {
if (hc >= HCS || (type != RC20 && type != FB10 && type != RC100H && type != SENSOR)) {
return;
}
type_ = type;
if (remotehum_[hc] != EMS_VALUE_UINT_NOTSET && hum == EMS_VALUE_UINT_NOTSET) {
switch_off_[hc] = true;
}
if (remotehum_[hc] != hum) {
rc_time_[hc] = uuid::get_uptime() - SEND_INTERVAL; // send now
sendcnt[hc] = 1;
}
remotehum_[hc] = hum;
}
uint8_t Roomctrl::get_hc(uint8_t addr) {
switch (type_) {
case SENSOR:
return addr - 0x40;
case RC100H:
return addr - 0x38;
case FB10:
case RC20:
default:
return addr - 0x18;
}
}
/**
* if remote control is active send the temperature every minute
*/
void Roomctrl::send(const uint8_t addr) {
uint8_t hc = get_hc(addr);
// check address, reply only on addresses 0x18..0x1B or 0x40..0x43
if (hc >= HCS) {
return;
}
// no reply if the temperature is not set
if (!switch_off_[hc] && remotetemp_[hc] == EMS_VALUE_SHORT_NOTSET && remotehum_[hc] == EMS_VALUE_UINT_NOTSET) {
return;
}
if (uuid::get_uptime() - rc_time_[hc] > SEND_INTERVAL) { // send every minute
if (type_ == RC100H) {
if (sendcnt[hc] == 1) { // second telegram for humidity
if (switch_off_[hc]) {
remotehum_[hc] = EMS_VALUE_UINT_NOTSET;
}
rc_time_[hc] = uuid::get_uptime();
humidity(addr, 0x10, hc);
sendcnt[hc] = 0;
} else { // temperature telegram
if (remotehum_[hc] != EMS_VALUE_UINT_NOTSET) {
sendcnt[hc] = 1;
} else {
rc_time_[hc] = uuid::get_uptime();
}
temperature(addr, 0x10, hc); // send to master-thermostat (https://github.com/emsesp/EMS-ESP32/issues/336)
}
} else if (type_ == FB10) {
rc_time_[hc] = uuid::get_uptime();
temperature(addr, 0x10, hc); // send to master-thermostat (https://github.com/emsesp/EMS-ESP32/issues/336)
} else { // type==RC20
rc_time_[hc] = uuid::get_uptime();
temperature(addr, 0x00, hc); // send to all
}
if (remotehum_[hc] == EMS_VALUE_UINT_NOTSET) {
switch_off_[hc] = false;
}
} else {
// acknowledge every poll, otherwise the master shows error A22-816
EMSuart::send_poll(addr);
}
}
/**
* check if there is a message for the remote room controller
*/
void Roomctrl::check(const uint8_t addr, const uint8_t * data, const uint8_t length) {
uint8_t hc = get_hc(addr & 0x7F);
// check address, reply only on addresses 0x18..0x1B
if (hc >= HCS || length < 5) {
return;
}
// no reply if the temperature is not set
if (remotetemp_[hc] == EMS_VALUE_SHORT_NOTSET) {
return;
}
// reply to writes with write nack byte
if (addr & 0x80) { // it's a write to us
nack_write(); // we don't accept writes.
return;
}
// reads: for now we only reply to version and remote temperature
// empty message back if temperature not set or unknown message type
if (data[2] == EMSdevice::EMS_TYPE_VERSION) {
version(addr, data[0]);
} else if (length == 5 && remotetemp_[hc] == EMS_VALUE_SHORT_NOTSET) {
unknown(addr, data[0], data[2], data[3]);
} else if (length == 7 && remotetemp_[hc] == EMS_VALUE_SHORT_NOTSET) {
unknown(addr, data[0], data[3], data[5], data[6]);
} else if (data[2] == 0xAF && data[3] == 0) {
temperature(addr, data[0], hc);
} else if (length == 7 && data[2] == 0xFF && data[3] == 0 && data[5] == 0 && data[6] == 0x23) { // Junkers
temperature(addr, data[0], hc);
} else if (length == 7 && data[2] == 0xFF && data[3] == 0 && data[5] == 3 && data[6] == 0x2B) { // EMS+ temperature
temperature(addr, data[0], hc);
} else if (length == 7 && data[2] == 0xFF && data[3] == 0 && data[5] == 3 && data[6] == 0x7B && remotehum_[hc] != EMS_VALUE_UINT_NOTSET) { // EMS+ humidity
humidity(addr, data[0], hc);
} else if (length == 5) { // ems query
unknown(addr, data[0], data[2], data[3]);
} else if (length == 7 && data[2] == 0xFF) { // ems+ query
unknown(addr, data[0], data[3], data[5], data[6]);
}
}
/**
* send version info RC20 (Prod. 113, Ver. 02.01) or RC20RF (Prod. 93, Ver. 02.00)
*/
void Roomctrl::version(uint8_t addr, uint8_t dst) {
uint8_t data[10];
data[0] = addr;
data[1] = dst;
data[2] = 0x02;
data[3] = 0;
data[4] = type_; // set RC20 id 113, Ver 02.01 or Junkers FB10 id 109, Ver 16.05, RC100H id 200 ver 40.04
data[5] = type_ == RC20 ? 2 : type_ == FB10 ? 16 : 40;
data[6] = type_ == RC20 ? 1 : type_ == FB10 ? 5 : 4;
data[7] = EMSbus::calculate_crc(data, 7); // apppend CRC
EMSuart::transmit(data, 8);
}
/**
* unknown message id, we reply with empty message
*/
void Roomctrl::unknown(uint8_t addr, uint8_t dst, uint8_t type, uint8_t offset) {
uint8_t data[10];
data[0] = addr;
data[1] = dst;
data[2] = type;
data[3] = offset;
data[4] = EMSbus::calculate_crc(data, 4); // apppend CRC
EMSuart::transmit(data, 5);
}
void Roomctrl::unknown(uint8_t addr, uint8_t dst, uint8_t offset, uint8_t typeh, uint8_t typel) {
uint8_t data[10];
data[0] = addr;
data[1] = dst;
data[2] = 0xFF;
data[3] = offset;
data[4] = typeh;
data[5] = typel;
data[6] = EMSbus::calculate_crc(data, 6); // apppend CRC
EMSuart::transmit(data, 7);
}
/**
* send the room temperature in message 0xAF
*/
void Roomctrl::temperature(uint8_t addr, uint8_t dst, uint8_t hc) {
uint8_t data[10];
data[0] = addr;
data[1] = dst;
if (type_ == RC20) { // RC20, telegram 0xAF
data[2] = 0xAF;
data[3] = 0;
data[4] = (uint8_t)(remotetemp_[hc] >> 8);
data[5] = (uint8_t)(remotetemp_[hc] & 0xFF);
data[6] = 0;
data[7] = EMSbus::calculate_crc(data, 7); // apppend CRC
EMSuart::transmit(data, 8);
} else if (type_ == FB10) { // Junkers FB10, telegram 0x0123
data[2] = 0xFF;
data[3] = 0;
data[4] = 0;
data[5] = 0x23; // is this always 0x23 or count with hc?
data[6] = (uint8_t)(remotetemp_[hc] >> 8);
data[7] = (uint8_t)(remotetemp_[hc] & 0xFF);
data[8] = EMSbus::calculate_crc(data, 8); // apppend CRC
EMSuart::transmit(data, 9);
} else if (type_ == RC100H) { // RC100H, telegram 42B
data[2] = 0xFF;
data[3] = 0;
data[4] = 3;
data[5] = 0x2B;
data[6] = (uint8_t)(remotetemp_[hc] >> 8);
data[7] = (uint8_t)(remotetemp_[hc] & 0xFF);
data[8] = EMSbus::calculate_crc(data, 8); // apppend CRC
EMSuart::transmit(data, 9);
} else if (type_ == SENSOR) { // wireless sensor, broadcast id 435
data[2] = 0xFF;
data[3] = 0;
data[4] = 3;
data[5] = 0x35;
data[6] = (uint8_t)(remotetemp_[hc] >> 8);
data[7] = (uint8_t)(remotetemp_[hc] & 0xFF);
data[8] = EMSbus::calculate_crc(data, 8); // apppend CRC
EMSuart::transmit(data, 9);
}
}
// send telegram 0x047B only for RC100H
void Roomctrl::humidity(uint8_t addr, uint8_t dst, uint8_t hc) {
uint8_t data[11];
data[0] = addr;
data[1] = dst;
uint16_t dew = calc_dew(remotetemp_[hc], remotehum_[hc]);
if (type_ == RC100H) { // RC100H, telegram 47B
data[2] = 0xFF;
data[3] = 0;
data[4] = 3;
data[5] = 0x7B;
data[6] = dew == EMS_VALUE_SHORT_NOTSET ? EMS_VALUE_INT_NOTSET : (uint8_t)((dew + 5) / 10);
data[7] = remotehum_[hc];
data[8] = (uint8_t)(dew << 8);
data[9] = (uint8_t)(dew & 0xFF);
data[10] = EMSbus::calculate_crc(data, 10); // apppend CRC
EMSuart::transmit(data, 11);
}
}
/**
* send a nack if someone want to write to us.
*/
void Roomctrl::nack_write() {
uint8_t data[1];
data[0] = TxService::TX_WRITE_FAIL;
EMSuart::transmit(data, 1);
}
int16_t Roomctrl::calc_dew(int16_t temp, uint8_t humi) {
if (humi == EMS_VALUE_UINT_NOTSET || temp == EMS_VALUE_SHORT_NOTSET) {
return EMS_VALUE_SHORT_NOTSET;
}
const float k2 = 17.62;
const float k3 = 243.12;
const float t = (float)temp / 10;
const float h = (float)humi / 100;
int16_t dt = (10 * k3 * (((k2 * t) / (k3 + t)) + log(h)) / (((k2 * k3) / (k3 + t)) - log(h)));
return dt;
}
} // namespace emsesp
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