mirror of
https://github.com/emsesp/EMS-ESP32.git
synced 2025-12-06 15:59:52 +03:00
647 lines
24 KiB
C++
647 lines
24 KiB
C++
/*
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* EMS-ESP - https://github.com/emsesp/EMS-ESP
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* Copyright 2020-2024 Paul Derbyshire
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// code originally written by nomis - https://github.com/nomis
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#include "temperaturesensor.h"
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#include "emsesp.h"
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#ifdef ESP32
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#define YIELD
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#else
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#define YIELD yield()
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#endif
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namespace emsesp {
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uuid::log::Logger TemperatureSensor::logger_{F_(temperaturesensor), uuid::log::Facility::DAEMON};
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// start the 1-wire
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void TemperatureSensor::start() {
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reload();
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if (!dallas_gpio_) {
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sensors_.clear();
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return; // disabled if dallas gpio is 0
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}
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#ifndef EMSESP_STANDALONE
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bus_.begin(dallas_gpio_);
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LOG_INFO("Starting Temperature Sensor service");
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#endif
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char topic[Mqtt::MQTT_TOPIC_MAX_SIZE];
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snprintf(topic, sizeof(topic), "%s/#", F_(temperaturesensor));
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Mqtt::subscribe(EMSdevice::DeviceType::TEMPERATURESENSOR, topic, nullptr); // use empty function callback
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}
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// load settings
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void TemperatureSensor::reload() {
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// load the service settings
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EMSESP::webSettingsService.read([&](WebSettings & settings) {
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dallas_gpio_ = settings.dallas_gpio;
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parasite_ = settings.dallas_parasite;
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});
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for (auto & sensor : sensors_) {
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remove_ha_topic(sensor.id());
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sensor.ha_registered = false; // force HA configs to be re-created
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}
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}
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void TemperatureSensor::loop() {
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if (!dallas_gpio_) {
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return; // dallas gpio is 0 (disabled)
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}
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#ifndef EMSESP_STANDALONE
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uint32_t time_now = uuid::get_uptime();
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if (state_ == State::IDLE) {
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if (time_now - last_activity_ >= READ_INTERVAL_MS) {
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#ifdef EMSESP_DEBUG_SENSOR
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LOG_DEBUG("Read sensor temperature");
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#endif
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if (bus_.reset() || parasite_) {
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YIELD;
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bus_.skip();
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bus_.write(CMD_CONVERT_TEMP, parasite_ ? 1 : 0);
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state_ = State::READING;
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scanretry_ = 0;
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} else {
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// no sensors found
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if (sensors_.size()) {
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sensorfails_++;
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if (++scanretry_ > SCAN_MAX) { // every 30 sec
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scanretry_ = 0;
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#ifdef EMSESP_DEBUG_SENSOR
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LOG_DEBUG("Error: Bus reset failed");
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#endif
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#ifndef EMSESP_TEST
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// don't reset if running in test mode where we simulate sensors
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for (auto & sensor : sensors_) {
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sensor.temperature_c = EMS_VALUE_INT16_NOTSET;
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}
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#endif
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}
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}
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}
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last_activity_ = time_now;
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}
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} else if (state_ == State::READING) {
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if (temperature_convert_complete() && (time_now - last_activity_ > CONVERSION_MS)) {
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#ifdef EMSESP_DEBUG_SENSOR
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LOG_DEBUG("Scanning for temperature sensors");
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#endif
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bus_.reset_search();
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state_ = State::SCANNING;
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} else if (time_now - last_activity_ > READ_TIMEOUT_MS) {
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#ifdef EMSESP_DEBUG_SENSOR
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LOG_WARNING("Sensor read timeout");
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#endif
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state_ = State::IDLE;
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sensorfails_++;
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}
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} else if (state_ == State::SCANNING) {
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if (time_now - last_activity_ > SCAN_TIMEOUT_MS) {
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#ifdef EMSESP_DEBUG_SENSOR
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LOG_ERROR("Sensor scan timeout");
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#endif
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state_ = State::IDLE;
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sensorfails_++;
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} else {
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uint8_t addr[ADDR_LEN] = {0};
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if (bus_.search(addr)) {
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if (!parasite_) {
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bus_.depower();
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}
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if (bus_.crc8(addr, ADDR_LEN - 1) == addr[ADDR_LEN - 1]) {
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switch (addr[0]) {
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case TYPE_DS18B20:
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case TYPE_DS18S20:
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case TYPE_DS1822:
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case TYPE_DS1825:
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int16_t t;
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t = get_temperature_c(addr);
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if ((t >= -550) && (t <= 1250)) {
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sensorreads_++;
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// check if we already have this sensor
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bool found = false;
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for (auto & sensor : sensors_) {
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if (sensor.internal_id() == get_id(addr)) {
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t += sensor.offset();
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if (t != sensor.temperature_c) {
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sensor.temperature_c = t;
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publish_sensor(sensor);
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changed_ |= true;
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}
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sensor.read = true;
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found = true;
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break;
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}
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}
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// add new sensor. this will create the id string, empty name and offset
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if (!found && (sensors_.size() < (MAX_SENSORS - 1))) {
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sensors_.emplace_back(addr);
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sensors_.back().read = true;
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changed_ = true;
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// look in the customization service for an optional alias or offset for that particular sensor
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sensors_.back().apply_customization();
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sensors_.back().temperature_c = t + sensors_.back().offset();
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publish_sensor(sensors_.back()); // call publish single
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// sort the sensors based on name
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// std::sort(sensors_.begin(), sensors_.end(), [](const Sensor & a, const Sensor & b) { return a.name() < b.name(); });
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}
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} else {
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sensorfails_++;
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}
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break;
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default:
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sensorfails_++;
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LOG_ERROR("Unknown sensor %s", Sensor(addr).id().c_str());
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break;
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}
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} else {
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sensorfails_++;
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LOG_ERROR("Invalid sensor %s", Sensor(addr).id().c_str());
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}
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} else {
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if (!parasite_) {
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bus_.depower();
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}
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// check for missing sensors after some samples
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// but don't do this if running in test mode where we simulate sensors
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if (++scancnt_ > SCAN_MAX) {
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for (auto & sensor : sensors_) {
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if (!sensor.read) {
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sensor.temperature_c = EMS_VALUE_INT16_NOTSET;
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changed_ = true;
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}
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sensor.read = false;
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}
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scancnt_ = 0;
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} else if (scancnt_ == SCAN_START + 1) { // startup
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firstscan_ = sensors_.size();
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// LOG_DEBUG("Adding %d sensor(s) from first scan", firstscan_);
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} else if ((scancnt_ <= 0) && (firstscan_ != sensors_.size())) { // check 2 times for no change of sensor #
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scancnt_ = SCAN_START;
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sensors_.clear(); // restart scanning and clear to get correct numbering
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}
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state_ = State::IDLE;
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}
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}
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}
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#endif
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}
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bool TemperatureSensor::temperature_convert_complete() {
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#ifndef EMSESP_STANDALONE
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if (parasite_) {
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return true; // don't care, use the minimum time in loop
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}
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return bus_.read_bit() == 1;
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#else
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return true;
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#endif
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}
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int16_t TemperatureSensor::get_temperature_c(const uint8_t addr[]) {
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#ifndef EMSESP_STANDALONE
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if (!bus_.reset()) {
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LOG_ERROR("Bus reset failed before reading scratchpad from %s", Sensor(addr).id().c_str());
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return EMS_VALUE_INT16_NOTSET;
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}
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YIELD;
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uint8_t scratchpad[SCRATCHPAD_LEN] = {0};
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bus_.select(addr);
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bus_.write(CMD_READ_SCRATCHPAD);
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bus_.read_bytes(scratchpad, SCRATCHPAD_LEN);
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YIELD;
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if (!bus_.reset()) {
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LOG_ERROR("Bus reset failed after reading scratchpad from %s", Sensor(addr).id().c_str());
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return EMS_VALUE_INT16_NOTSET;
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}
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YIELD;
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if (bus_.crc8(scratchpad, SCRATCHPAD_LEN - 1) != scratchpad[SCRATCHPAD_LEN - 1]) {
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LOG_WARNING("Invalid scratchpad CRC: %02X%02X%02X%02X%02X%02X%02X%02X%02X from sensor %s",
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scratchpad[0],
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scratchpad[1],
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scratchpad[2],
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scratchpad[3],
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scratchpad[4],
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scratchpad[5],
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scratchpad[6],
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scratchpad[7],
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scratchpad[8],
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Sensor(addr).id().c_str());
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return EMS_VALUE_INT16_NOTSET;
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}
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int16_t raw_value = ((int16_t)scratchpad[SCRATCHPAD_TEMP_MSB] << 8) | scratchpad[SCRATCHPAD_TEMP_LSB];
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if (addr[0] == TYPE_DS18S20) {
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raw_value = (raw_value << 3) + 12 - scratchpad[SCRATCHPAD_CNT_REM];
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} else {
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// Adjust based on sensor resolution
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int resolution = 9 + ((scratchpad[SCRATCHPAD_CONFIG] >> 5) & 0x3);
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switch (resolution) {
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case 9:
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raw_value &= ~0x7;
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break;
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case 10:
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raw_value &= ~0x3;
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break;
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case 11:
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raw_value &= ~0x1;
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break;
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case 12:
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break;
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}
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}
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raw_value = ((int32_t)raw_value * 625 + 500) / 1000; // round to 0.1
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return raw_value;
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#else
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return EMS_VALUE_INT16_NOTSET;
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#endif
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}
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// update temperature sensor information name and offset
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bool TemperatureSensor::update(const std::string & id, const std::string & name, int16_t offset) {
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// find the sensor
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for (auto & sensor : sensors_) {
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if (sensor.id() == id) {
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// found a match, update the sensor object
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// if HA is enabled then delete the old record
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if (Mqtt::ha_enabled()) {
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remove_ha_topic(id);
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sensor.ha_registered = false; // force HA configs to be re-created
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}
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sensor.set_name(name);
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sensor.set_offset(offset);
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// store the new name and offset in our configuration
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EMSESP::webCustomizationService.update([&](WebCustomization & settings) {
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// look it up to see if it exists
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bool found = false;
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for (auto & SensorCustomization : settings.sensorCustomizations) {
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if (SensorCustomization.id == id) {
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SensorCustomization.name = name;
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SensorCustomization.offset = offset;
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found = true;
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LOG_DEBUG("Customizing existing sensor ID %s", id.c_str());
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break;
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}
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}
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if (!found) {
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SensorCustomization newSensor = SensorCustomization();
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newSensor.id = id;
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newSensor.name = name;
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newSensor.offset = offset;
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settings.sensorCustomizations.push_back(newSensor);
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LOG_DEBUG("Adding new customization for sensor ID %s", id.c_str());
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}
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sensor.ha_registered = false; // it's changed so we may need to recreate the HA config
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return StateUpdateResult::CHANGED;
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});
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return true;
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}
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}
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return true; // not found, nothing updated
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}
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// check to see if values have been updated
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bool TemperatureSensor::updated_values() {
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if (changed_) {
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changed_ = false;
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return true;
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}
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return false;
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}
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// called from emsesp.cpp for commands
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bool TemperatureSensor::get_value_info(JsonObject output, const char * cmd, const int8_t id) {
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// check of it a 'commmands' command
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if (Helpers::toLower(cmd) == F_(commands)) {
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return Command::list(EMSdevice::DeviceType::TEMPERATURESENSOR, output);
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}
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if (sensors_.empty()) {
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return true; // no sensors, return true
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}
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uint8_t show_all = 0;
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if (Helpers::hasValue(cmd)) {
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show_all = (strncmp(cmd, F_(info), 4) == 0) ? 1 : (strncmp(cmd, F_(values), 6) == 0) ? 2 : 0;
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}
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// see if we're showing all sensors
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if (show_all) {
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for (const auto & sensor : sensors_) {
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if (show_all == 1) {
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// info
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JsonObject dataSensor = output[sensor.name()].to<JsonObject>();
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addSensorJson(dataSensor, sensor);
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} else {
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// values, shortname version. Also used in 'system allvalues'
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if (Helpers::hasValue(sensor.temperature_c)) {
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char val[10];
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output[sensor.name()] = serialized(Helpers::render_value(val, sensor.temperature_c, 10, EMSESP::system_.fahrenheit() ? 2 : 0));
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}
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}
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}
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return true;
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}
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// this is for a specific sensor
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// make a copy of the string command for parsing, and lowercase it
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char sensor_name[COMMAND_MAX_LENGTH] = {'\0'};
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char * attribute_s = nullptr;
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strlcpy(sensor_name, Helpers::toLower(cmd).c_str(), sizeof(sensor_name));
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// check for a specific attribute to fetch instead of the complete record
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char * breakp = strchr(sensor_name, '/');
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if (breakp) {
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*breakp = '\0';
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attribute_s = breakp + 1;
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}
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for (const auto & sensor : sensors_) {
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// match custom name or sensor ID
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if (sensor_name == Helpers::toLower(sensor.name()) || sensor_name == Helpers::toLower(sensor.id())) {
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// add values
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addSensorJson(output, sensor);
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// if we're filtering on an attribute, go find it
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if (attribute_s) {
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if (output.containsKey(attribute_s)) {
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String data = output[attribute_s].as<String>();
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output.clear();
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output["api_data"] = data;
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return true;
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} else {
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char error[100];
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snprintf(error, sizeof(error), "cannot find attribute %s in entity %s", attribute_s, sensor_name);
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output.clear();
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output["message"] = error;
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return false;
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}
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}
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return true; // found a match, exit
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}
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}
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return false; // not found
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}
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void TemperatureSensor::addSensorJson(JsonObject output, const Sensor & sensor) {
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output["id"] = sensor.id();
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output["name"] = sensor.name();
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if (Helpers::hasValue(sensor.temperature_c)) {
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char val[10];
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output["value"] = serialized(Helpers::render_value(val, sensor.temperature_c, 10, EMSESP::system_.fahrenheit() ? 2 : 0));
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}
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output["type"] = F_(number);
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output["uom"] = EMSdevice::uom_to_string(DeviceValueUOM::DEGREES);
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output["writeable"] = false;
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}
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// publish a single sensor to MQTT
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void TemperatureSensor::publish_sensor(const Sensor & sensor) {
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if (Mqtt::enabled() && Mqtt::publish_single()) {
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char topic[Mqtt::MQTT_TOPIC_MAX_SIZE];
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if (Mqtt::publish_single2cmd()) {
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snprintf(topic, sizeof(topic), "%s/%s", (F_(temperaturesensor)), sensor.name().c_str());
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} else {
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snprintf(topic, sizeof(topic), "%s%s/%s", (F_(temperaturesensor)), "_data", sensor.name().c_str());
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}
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char payload[10];
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Mqtt::queue_publish(topic, Helpers::render_value(payload, sensor.temperature_c, 10, EMSESP::system_.fahrenheit() ? 2 : 0));
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}
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}
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// send empty config topic to remove the entry from HA
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void TemperatureSensor::remove_ha_topic(const std::string & id) {
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if (!Mqtt::ha_enabled()) {
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return;
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}
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LOG_DEBUG("Removing HA config for temperature sensor ID %s", id.c_str());
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// use '_' as HA doesn't like '-' in the topic name
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std::string sensorid = id;
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std::replace(sensorid.begin(), sensorid.end(), '-', '_');
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char topic[Mqtt::MQTT_TOPIC_MAX_SIZE];
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snprintf(topic, sizeof(topic), "sensor/%s/temperaturesensor_%s/config", Mqtt::basename().c_str(), sensorid.c_str());
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Mqtt::queue_remove_topic(topic);
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}
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// send all temperature sensor values as a JSON package to MQTT
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void TemperatureSensor::publish_values(const bool force) {
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if (!Mqtt::enabled()) {
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return;
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}
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uint8_t num_sensors = sensors_.size();
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if (num_sensors == 0) {
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return;
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}
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if (force && Mqtt::publish_single()) {
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for (const auto & sensor : sensors_) {
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publish_sensor(sensor);
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}
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}
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JsonDocument doc;
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for (auto & sensor : sensors_) {
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bool has_value = Helpers::hasValue(sensor.temperature_c);
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if (has_value) {
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char val[10];
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if (Mqtt::is_nested()) {
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JsonObject dataSensor = doc[sensor.id()].to<JsonObject>();
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dataSensor["name"] = sensor.name();
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dataSensor["temp"] = serialized(Helpers::render_value(val, sensor.temperature_c, 10, EMSESP::system_.fahrenheit() ? 2 : 0));
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} else {
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doc[sensor.name()] = serialized(Helpers::render_value(val, sensor.temperature_c, 10, EMSESP::system_.fahrenheit() ? 2 : 0));
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}
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}
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// create the HA MQTT config
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// to e.g. homeassistant/sensor/ems-esp/temperaturesensor_28-233D-9497-0C03/config
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if (Mqtt::ha_enabled()) {
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if (!has_value && sensor.ha_registered) {
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remove_ha_topic(sensor.id());
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sensor.ha_registered = false;
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} else if (!sensor.ha_registered || force) {
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LOG_DEBUG("Recreating HA config for sensor ID %s", sensor.id().c_str());
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JsonDocument config;
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config["dev_cla"] = "temperature";
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config["stat_cla"] = "measurement";
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|
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char stat_t[50];
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snprintf(stat_t, sizeof(stat_t), "%s/%s_data", Mqtt::base().c_str(), F_(temperaturesensor)); // use base path
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config["stat_t"] = stat_t;
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|
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config["unit_of_meas"] = EMSdevice::uom_to_string(DeviceValueUOM::DEGREES);
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|
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char val_obj[70];
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char val_cond[170];
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if (Mqtt::is_nested()) {
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snprintf(val_obj, sizeof(val_obj), "value_json['%s'].temp", sensor.id().c_str());
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snprintf(val_cond, sizeof(val_cond), "value_json['%s'] is defined and %s is defined", sensor.id().c_str(), val_obj);
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} else {
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snprintf(val_obj, sizeof(val_obj), "value_json['%s']", sensor.name().c_str());
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snprintf(val_cond, sizeof(val_cond), "%s is defined", val_obj);
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}
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|
|
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// for the value template, there's a problem still with Domoticz probably due to the special characters.
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|
// See https://github.com/emsesp/EMS-ESP32/issues/1360
|
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if (Mqtt::discovery_type() == Mqtt::discoveryType::HOMEASSISTANT) {
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config["val_tpl"] = (std::string) "{{" + val_obj + " if " + val_cond + " else -55}}";
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} else {
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config["val_tpl"] = (std::string) "{{" + val_obj + "}}"; // ommit value conditional Jinja2 template code
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|
}
|
|
|
|
char uniq_s[70];
|
|
if (Mqtt::entity_format() == Mqtt::entityFormat::MULTI_SHORT) {
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|
snprintf(uniq_s, sizeof(uniq_s), "%s_%s_%s", Mqtt::basename().c_str(), F_(temperaturesensor), sensor.id().c_str());
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} else {
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snprintf(uniq_s, sizeof(uniq_s), "%s_%s", F_(temperaturesensor), sensor.id().c_str());
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|
}
|
|
|
|
config["obj_id"] = uniq_s;
|
|
config["uniq_id"] = uniq_s; // same as object_id/obj_id
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|
|
|
char name[50];
|
|
snprintf(name, sizeof(name), "%s", sensor.name().c_str());
|
|
config["name"] = name;
|
|
|
|
// see if we need to create the [devs] discovery section, as this needs only to be done once for all sensors
|
|
bool is_ha_device_created = false;
|
|
for (auto & sensor : sensors_) {
|
|
if (sensor.ha_registered) {
|
|
is_ha_device_created = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Mqtt::add_ha_sections_to_doc("temperature", stat_t, config, !is_ha_device_created, val_cond);
|
|
|
|
char topic[Mqtt::MQTT_TOPIC_MAX_SIZE];
|
|
// use '_' as HA doesn't like '-' in the topic name
|
|
std::string sensorid = sensor.id();
|
|
std::replace(sensorid.begin(), sensorid.end(), '-', '_');
|
|
|
|
snprintf(topic, sizeof(topic), "sensor/%s/%s_%s/config", Mqtt::basename().c_str(), F_(temperaturesensor), sensorid.c_str());
|
|
|
|
sensor.ha_registered = Mqtt::queue_ha(topic, config.as<JsonObject>());
|
|
}
|
|
}
|
|
}
|
|
|
|
char topic[Mqtt::MQTT_TOPIC_MAX_SIZE];
|
|
snprintf(topic, sizeof(topic), "%s_data", F_(temperaturesensor));
|
|
Mqtt::queue_publish(topic, doc.as<JsonObject>());
|
|
}
|
|
|
|
// skip crc from id
|
|
TemperatureSensor::Sensor::Sensor(const uint8_t addr[])
|
|
: internal_id_(((uint64_t)addr[0] << 48) | ((uint64_t)addr[1] << 40) | ((uint64_t)addr[2] << 32) | ((uint64_t)addr[3] << 24) | ((uint64_t)addr[4] << 16)
|
|
| ((uint64_t)addr[5] << 8) | ((uint64_t)addr[6])) {
|
|
// create ID string
|
|
char id_s[20];
|
|
snprintf(id_s,
|
|
sizeof(id_s),
|
|
"%02X-%04X-%04X-%04X",
|
|
(unsigned int)(internal_id_ >> 48) & 0xFF,
|
|
(unsigned int)(internal_id_ >> 32) & 0xFFFF,
|
|
(unsigned int)(internal_id_ >> 16) & 0xFFFF,
|
|
(unsigned int)(internal_id_) & 0xFFFF);
|
|
id_ = std::string(id_s);
|
|
name_ = std::string{}; // name (alias) is empty
|
|
offset_ = 0; // 0 degrees offset
|
|
}
|
|
|
|
uint64_t TemperatureSensor::get_id(const uint8_t addr[]) {
|
|
return (((uint64_t)addr[0] << 48) | ((uint64_t)addr[1] << 40) | ((uint64_t)addr[2] << 32) | ((uint64_t)addr[3] << 24) | ((uint64_t)addr[4] << 16)
|
|
| ((uint64_t)addr[5] << 8) | ((uint64_t)addr[6]));
|
|
}
|
|
|
|
// find the name from the customization service
|
|
// if empty, return the ID as a string
|
|
std::string TemperatureSensor::Sensor::name() const {
|
|
if (name_.empty()) {
|
|
return id_;
|
|
}
|
|
return name_;
|
|
}
|
|
|
|
// look up in customization service for a specific sensor
|
|
// and set the name and offset from that entry if it exists
|
|
bool TemperatureSensor::Sensor::apply_customization() {
|
|
EMSESP::webCustomizationService.read([&](WebCustomization & settings) {
|
|
auto sensors = settings.sensorCustomizations;
|
|
if (!sensors.empty()) {
|
|
for (const auto & sensor : sensors) {
|
|
LOG_DEBUG("Loading customization for temperature sensor %s", sensor.id.c_str());
|
|
if (id_ == sensor.id) {
|
|
set_name(sensor.name);
|
|
set_offset(sensor.offset);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
});
|
|
|
|
return false; // not found, will use default ID as name and 0 for offset
|
|
}
|
|
|
|
// hard coded tests
|
|
#if defined(EMSESP_TEST)
|
|
void TemperatureSensor::test() {
|
|
// add 2 temperature sensors
|
|
// Sensor ID: 01-0203-0405-0607
|
|
uint8_t addr[ADDR_LEN] = {1, 2, 3, 4, 5, 6, 7, 8};
|
|
sensors_.emplace_back(addr);
|
|
sensors_.back().apply_customization();
|
|
sensors_.back().temperature_c = 123;
|
|
sensors_.back().read = true;
|
|
publish_sensor(sensors_.back()); // call publish single
|
|
|
|
// Sensor ID: 0B-0C0D-0E0F-1011
|
|
uint8_t addr2[ADDR_LEN] = {11, 12, 13, 14, 15, 16, 17, 18};
|
|
sensors_.emplace_back(addr2);
|
|
sensors_.back().apply_customization();
|
|
sensors_.back().temperature_c = 456;
|
|
sensors_.back().read = true;
|
|
publish_sensor(sensors_.back()); // call publish single
|
|
}
|
|
#endif
|
|
|
|
} // namespace emsesp
|