Number and Template Number updates (#2036)

Co-authored-by: Otto winter <otto@otto-winter.com>

esphome/components/api/api_connection.cpp

@@ -570,11 +570,11 @@ bool APIConnection::send_number_info(number::Number *number) {
   msg.object_id = number->get_object_id();
   msg.name = number->get_name();
   msg.unique_id = get_default_unique_id("number", number);
-  msg.icon = number->get_icon();
+  msg.icon = number->traits.get_icon();
 
-  msg.min_value = number->get_min_value();
+  msg.min_value = number->traits.get_min_value();
-  msg.max_value = number->get_max_value();
+  msg.max_value = number->traits.get_max_value();
-  msg.step = number->get_step();
+  msg.step = number->traits.get_step();
 
   return this->send_list_entities_number_response(msg);
 }

esphome/components/mqtt/mqtt_number.cpp

@@ -3,10 +3,6 @@
 
 #ifdef USE_NUMBER
 
-#ifdef USE_DEEP_SLEEP
-#include "esphome/components/deep_sleep/deep_sleep_component.h"
-#endif
-
 namespace esphome {
 namespace mqtt {
 
@@ -20,7 +16,7 @@ void MQTTNumberComponent::setup() {
   this->subscribe(this->get_command_topic_(), [this](const std::string &topic, const std::string &state) {
     auto val = parse_float(state);
     if (!val.has_value()) {
-      ESP_LOGE(TAG, "Can't convert '%s' to number!", state.c_str());
+      ESP_LOGW(TAG, "Can't convert '%s' to number!", state.c_str());
       return;
     }
     auto call = this->number_->make_call();
@@ -39,8 +35,15 @@ std::string MQTTNumberComponent::component_type() const { return "number"; }
 
 std::string MQTTNumberComponent::friendly_name() const { return this->number_->get_name(); }
 void MQTTNumberComponent::send_discovery(JsonObject &root, mqtt::SendDiscoveryConfig &config) {
-  if (!this->number_->get_icon().empty())
+  const auto &traits = number_->traits;
-    root["icon"] = this->number_->get_icon();
+  // https://www.home-assistant.io/integrations/number.mqtt/
+  if (!traits.get_icon().empty())
+    root["icon"] = traits.get_icon();
+  root["min_value"] = traits.get_min_value();
+  root["max_value"] = traits.get_max_value();
+  root["step"] = traits.get_step();
+
+  config.command_topic = true;
 }
 bool MQTTNumberComponent::send_initial_state() {
   if (this->number_->has_state()) {
@@ -51,8 +54,9 @@ bool MQTTNumberComponent::send_initial_state() {
 }
 bool MQTTNumberComponent::is_internal() { return this->number_->is_internal(); }
 bool MQTTNumberComponent::publish_state(float value) {
-  int8_t accuracy = this->number_->get_accuracy_decimals();
+  char buffer[64];
-  return this->publish(this->get_state_topic_(), value_accuracy_to_string(value, accuracy));
+  snprintf(buffer, sizeof(buffer), "%f", value);
+  return this->publish(this->get_state_topic_(), buffer);
 }
 
 }  // namespace mqtt

esphome/components/number/__init__.py

@@ -1,3 +1,4 @@
+from typing import Optional
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome import automation
@@ -66,12 +67,18 @@ NUMBER_SCHEMA = cv.MQTT_COMPONENT_SCHEMA.extend(
 )
 
 
-async def setup_number_core_(var, config):
+async def setup_number_core_(
+    var, config, *, min_value: float, max_value: float, step: Optional[float]
+):
     cg.add(var.set_name(config[CONF_NAME]))
     if CONF_INTERNAL in config:
         cg.add(var.set_internal(config[CONF_INTERNAL]))
 
-    cg.add(var.set_icon(config[CONF_ICON]))
+    cg.add(var.traits.set_icon(config[CONF_ICON]))
+    cg.add(var.traits.set_min_value(min_value))
+    cg.add(var.traits.set_max_value(max_value))
+    if step is not None:
+        cg.add(var.traits.set_step(step))
 
     for conf in config.get(CONF_ON_VALUE, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
@@ -92,16 +99,24 @@ async def setup_number_core_(var, config):
         await mqtt.register_mqtt_component(mqtt_, config)
 
 
-async def register_number(var, config):
+async def register_number(
+    var, config, *, min_value: float, max_value: float, step: Optional[float] = None
+):
     if not CORE.has_id(config[CONF_ID]):
         var = cg.Pvariable(config[CONF_ID], var)
     cg.add(cg.App.register_number(var))
-    await setup_number_core_(var, config)
+    await setup_number_core_(
+        var, config, min_value=min_value, max_value=max_value, step=step
+    )
 
 
-async def new_number(config):
+async def new_number(
+    config, *, min_value: float, max_value: float, step: Optional[float] = None
+):
     var = cg.new_Pvariable(config[CONF_ID])
-    await register_number(var, config)
+    await register_number(
+        var, config, min_value=min_value, max_value=max_value, step=step
+    )
     return var
 
 

esphome/components/number/number.cpp

@@ -8,67 +8,38 @@ static const char *const TAG = "number";
 
 void NumberCall::perform() {
   ESP_LOGD(TAG, "'%s' - Setting", this->parent_->get_name().c_str());
-  if (this->value_.has_value()) {
+  if (!this->value_.has_value() || isnan(*this->value_)) {
-    auto value = *this->value_;
+    ESP_LOGW(TAG, "No value set for NumberCall");
-    uint8_t accuracy = this->parent_->get_accuracy_decimals();
+    return;
-    float min_value = this->parent_->get_min_value();
-    if (value < min_value) {
-      ESP_LOGW(TAG, "  Value %s must not be less than minimum %s", value_accuracy_to_string(value, accuracy).c_str(),
-               value_accuracy_to_string(min_value, accuracy).c_str());
-      this->value_.reset();
-      return;
-    }
-    float max_value = this->parent_->get_max_value();
-    if (value > max_value) {
-      ESP_LOGW(TAG, "  Value %s must not be larger than maximum %s", value_accuracy_to_string(value, accuracy).c_str(),
-               value_accuracy_to_string(max_value, accuracy).c_str());
-      this->value_.reset();
-      return;
-    }
-    ESP_LOGD(TAG, "  Value: %s", value_accuracy_to_string(*this->value_, accuracy).c_str());
-    this->parent_->set(*this->value_);
   }
+
+  const auto &traits = this->parent_->traits;
+  auto value = *this->value_;
+
+  float min_value = traits.get_min_value();
+  if (value < min_value) {
+    ESP_LOGW(TAG, "  Value %f must not be less than minimum %f", value, min_value);
+    return;
+  }
+  float max_value = traits.get_max_value();
+  if (value > max_value) {
+    ESP_LOGW(TAG, "  Value %f must not be greater than maximum %f", value, max_value);
+    return;
+  }
+  ESP_LOGD(TAG, "  Value: %f", *this->value_);
+  this->parent_->control(*this->value_);
 }
 
-NumberCall &NumberCall::set_value(float value) {
-  this->value_ = value;
-  return *this;
-}
-
-const optional<float> &NumberCall::get_value() const { return this->value_; }
-
-NumberCall Number::make_call() { return NumberCall(this); }
-
 void Number::publish_state(float state) {
   this->has_state_ = true;
   this->state = state;
-  ESP_LOGD(TAG, "'%s': Sending state %.5f", this->get_name().c_str(), state);
+  ESP_LOGD(TAG, "'%s': Sending state %f", this->get_name().c_str(), state);
   this->state_callback_.call(state);
 }
 
-uint32_t Number::update_interval() { return 0; }
-Number::Number(const std::string &name) : Nameable(name), state(NAN) {}
-Number::Number() : Number("") {}
-
 void Number::add_on_state_callback(std::function<void(float)> &&callback) {
   this->state_callback_.add(std::move(callback));
 }
-void Number::set_icon(const std::string &icon) { this->icon_ = icon; }
-std::string Number::get_icon() { return *this->icon_; }
-int8_t Number::get_accuracy_decimals() {
-  // use printf %g to find number of digits based on step
-  char buf[32];
-  sprintf(buf, "%.5g", this->step_);
-  std::string str{buf};
-  size_t dot_pos = str.find('.');
-  if (dot_pos == std::string::npos)
-    return 0;
-
-  return str.length() - dot_pos - 1;
-}
-float Number::get_state() const { return this->state; }
-
-bool Number::has_state() const { return this->has_state_; }
 
 uint32_t Number::hash_base() { return 2282307003UL; }
 

esphome/components/number/number.h

@@ -9,8 +9,8 @@ namespace number {
 #define LOG_NUMBER(prefix, type, obj) \
   if ((obj) != nullptr) { \
     ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, type, (obj)->get_name().c_str()); \
-    if (!(obj)->get_icon().empty()) { \
+    if (!(obj)->traits.get_icon().empty()) { \
-      ESP_LOGCONFIG(TAG, "%s  Icon: '%s'", prefix, (obj)->get_icon().c_str()); \
+      ESP_LOGCONFIG(TAG, "%s  Icon: '%s'", prefix, (obj)->traits.get_icon().c_str()); \
     } \
   }
 
@@ -19,72 +19,56 @@ class Number;
 class NumberCall {
  public:
   explicit NumberCall(Number *parent) : parent_(parent) {}
-  NumberCall &set_value(float value);
   void perform();
 
-  const optional<float> &get_value() const;
+  NumberCall &set_value(float value) {
+    value_ = value;
+    return *this;
+  }
+  const optional<float> &get_value() const { return value_; }
 
  protected:
   Number *const parent_;
   optional<float> value_;
 };
 
+class NumberTraits {
+ public:
+  void set_min_value(float min_value) { min_value_ = min_value; }
+  float get_min_value() const { return min_value_; }
+  void set_max_value(float max_value) { max_value_ = max_value; }
+  float get_max_value() const { return max_value_; }
+  void set_step(float step) { step_ = step; }
+  float get_step() const { return step_; }
+  void set_icon(std::string icon) { icon_ = std::move(icon); }
+  const std::string &get_icon() const { return icon_; }
+
+ protected:
+  float min_value_ = NAN;
+  float max_value_ = NAN;
+  float step_ = NAN;
+  std::string icon_;
+};
+
 /** Base-class for all numbers.
  *
  * A number can use publish_state to send out a new value.
  */
 class Number : public Nameable {
  public:
-  explicit Number();
-  explicit Number(const std::string &name);
-
-  /** Manually set the icon of this number. By default the number's default defined by icon() is used.
-   *
-   * @param icon The icon, for example "mdi:flash". "" to disable.
-   */
-  void set_icon(const std::string &icon);
-  /// Get the Home Assistant Icon. Uses the manual override if specified or the default value instead.
-  std::string get_icon();
-
-  /// Getter-syntax for .state.
-  float get_state() const;
-
-  /// Get the accuracy in decimals. Based on the step value.
-  int8_t get_accuracy_decimals();
-
-  /** Publish the current state to the front-end.
-   */
-  void publish_state(float state);
-
-  NumberCall make_call();
-
-  // ========== INTERNAL METHODS ==========
-  // (In most use cases you won't need these)
-  /// Add a callback that will be called every time the state changes.
-  void add_on_state_callback(std::function<void(float)> &&callback);
-
-  /** This member variable stores the last state.
-   *
-   * On startup, when no state is available yet, this is NAN (not-a-number) and the validity
-   * can be checked using has_state().
-   *
-   * This is exposed through a member variable for ease of use in esphome lambdas.
-   */
   float state;
 
+  void publish_state(float state);
+
+  NumberCall make_call() { return NumberCall(this); }
+  void set(float value) { make_call().set_value(value).perform(); }
+
+  void add_on_state_callback(std::function<void(float)> &&callback);
+
+  NumberTraits traits;
+
   /// Return whether this number has gotten a full state yet.
-  bool has_state() const;
+  bool has_state() const { return has_state_; }
-
-  /// Return with which interval the number is polled. Return 0 for non-polling mode.
-  virtual uint32_t update_interval();
-
-  void set_min_value(float min_value) { this->min_value_ = min_value; }
-  void set_max_value(float max_value) { this->max_value_ = max_value; }
-  void set_step(float step) { this->step_ = step; }
-
-  float get_min_value() const { return this->min_value_; }
-  float get_max_value() const { return this->max_value_; }
-  float get_step() const { return this->step_; }
 
  protected:
   friend class NumberCall;
@@ -95,17 +79,12 @@ class Number : public Nameable {
    *
    * @param value The value as validated by the NumberCall.
    */
-  virtual void set(float value) = 0;
+  virtual void control(float value) = 0;
 
   uint32_t hash_base() override;
 
   CallbackManager<void(float)> state_callback_;
-  /// Override the icon advertised to Home Assistant, otherwise number's icon will be used.
-  optional<std::string> icon_;
   bool has_state_{false};
-  float step_{1.0};
-  float min_value_{0};
-  float max_value_{100};
 };
 
 }  // namespace number

esphome/components/template/number/__init__.py

@@ -4,6 +4,7 @@ import esphome.config_validation as cv
 from esphome.components import number
 from esphome.const import (
     CONF_ID,
+    CONF_INITIAL_VALUE,
     CONF_LAMBDA,
     CONF_MAX_VALUE,
     CONF_MIN_VALUE,
@@ -32,9 +33,10 @@ CONFIG_SCHEMA = cv.All(
             cv.Required(CONF_MAX_VALUE): cv.float_,
             cv.Required(CONF_MIN_VALUE): cv.float_,
             cv.Required(CONF_STEP): cv.positive_float,
-            cv.Optional(CONF_LAMBDA): cv.returning_lambda,
+            cv.Exclusive(CONF_LAMBDA, "lambda-optimistic"): cv.returning_lambda,
-            cv.Optional(CONF_OPTIMISTIC, default=False): cv.boolean,
+            cv.Exclusive(CONF_OPTIMISTIC, "lambda-optimistic"): cv.boolean,
             cv.Optional(CONF_SET_ACTION): automation.validate_automation(single=True),
+            cv.Optional(CONF_INITIAL_VALUE): cv.float_,
         }
     ).extend(cv.polling_component_schema("60s")),
     validate_min_max,
@@ -44,20 +46,27 @@ CONFIG_SCHEMA = cv.All(
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
-    await number.register_number(var, config)
+    await number.register_number(
+        var,
+        config,
+        min_value=config[CONF_MIN_VALUE],
+        max_value=config[CONF_MAX_VALUE],
+        step=config[CONF_STEP],
+    )
 
     if CONF_LAMBDA in config:
         template_ = await cg.process_lambda(
             config[CONF_LAMBDA], [], return_type=cg.optional.template(float)
         )
         cg.add(var.set_template(template_))
+
+    elif CONF_OPTIMISTIC in config:
+        cg.add(var.set_optimistic(config[CONF_OPTIMISTIC]))
+
     if CONF_SET_ACTION in config:
         await automation.build_automation(
             var.get_set_trigger(), [(float, "x")], config[CONF_SET_ACTION]
         )
 
-    cg.add(var.set_optimistic(config[CONF_OPTIMISTIC]))
+    if CONF_INITIAL_VALUE in config:
-
+        cg.add(var.set_initial_value(config[CONF_INITIAL_VALUE]))
-    cg.add(var.set_min_value(config[CONF_MIN_VALUE]))
-    cg.add(var.set_max_value(config[CONF_MAX_VALUE]))
-    cg.add(var.set_step(config[CONF_STEP]))

esphome/components/template/number/template_number.cpp

@@ -6,34 +6,45 @@ namespace template_ {
 
 static const char *const TAG = "template.number";
 
-TemplateNumber::TemplateNumber() : set_trigger_(new Trigger<float>()) {}
+void TemplateNumber::setup() {
+  if (this->f_.has_value() || !this->optimistic_)
+    return;
+
+  this->pref_ = global_preferences.make_preference<float>(this->get_object_id_hash());
+  float value;
+  if (!this->pref_.load(&value)) {
+    if (!isnan(this->initial_value_))
+      value = this->initial_value_;
+    else
+      value = this->traits.get_min_value();
+  }
+  this->publish_state(value);
+}
 
 void TemplateNumber::update() {
   if (!this->f_.has_value())
     return;
 
   auto val = (*this->f_)();
-  if (val.has_value()) {
+  if (!val.has_value())
-    this->publish_state(*val);
+    return;
-  }
+
+  this->publish_state(*val);
 }
 
-void TemplateNumber::set(float value) {
+void TemplateNumber::control(float value) {
   this->set_trigger_->trigger(value);
 
-  if (this->optimistic_)
+  if (this->optimistic_) {
     this->publish_state(value);
+    this->pref_.save(&value);
+  }
 }
-float TemplateNumber::get_setup_priority() const { return setup_priority::HARDWARE; }
-void TemplateNumber::set_template(std::function<optional<float>()> &&f) { this->f_ = f; }
 void TemplateNumber::dump_config() {
   LOG_NUMBER("", "Template Number", this);
   ESP_LOGCONFIG(TAG, "  Optimistic: %s", YESNO(this->optimistic_));
   LOG_UPDATE_INTERVAL(this);
 }
 
-void TemplateNumber::set_optimistic(bool optimistic) { this->optimistic_ = optimistic; }
-Trigger<float> *TemplateNumber::get_set_trigger() const { return this->set_trigger_; };
-
 }  // namespace template_
 }  // namespace esphome

esphome/components/template/number/template_number.h

@@ -3,27 +3,32 @@
 #include "esphome/components/number/number.h"
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"
+#include "esphome/core/preferences.h"
 
 namespace esphome {
 namespace template_ {
 
 class TemplateNumber : public number::Number, public PollingComponent {
  public:
-  TemplateNumber();
+  void set_template(std::function<optional<float>()> &&f) { this->f_ = f; }
-  void set_template(std::function<optional<float>()> &&f);
 
+  void setup() override;
   void update() override;
   void dump_config() override;
-  float get_setup_priority() const override;
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
 
-  Trigger<float> *get_set_trigger() const;
+  Trigger<float> *get_set_trigger() const { return set_trigger_; }
-  void set_optimistic(bool optimistic);
+  void set_optimistic(bool optimistic) { optimistic_ = optimistic; }
+  void set_initial_value(float initial_value) { initial_value_ = initial_value; }
 
  protected:
-  void set(float value) override;
+  void control(float value) override;
   bool optimistic_{false};
-  Trigger<float> *set_trigger_;
+  float initial_value_{NAN};
+  Trigger<float> *set_trigger_ = new Trigger<float>();
   optional<std::function<optional<float>()>> f_;
+
+  ESPPreferenceObject pref_;
 };
 
 }  // namespace template_

esphome/components/web_server/web_server.cpp

@@ -614,8 +614,9 @@ void WebServer::handle_number_request(AsyncWebServerRequest *request, const UrlM
 std::string WebServer::number_json(number::Number *obj, float value) {
   return json::build_json([obj, value](JsonObject &root) {
     root["id"] = "number-" + obj->get_object_id();
-    std::string state = value_accuracy_to_string(value, obj->get_accuracy_decimals());
+    char buffer[64];
-    root["state"] = state;
+    snprintf(buffer, sizeof(buffer), "%f", value);
+    root["state"] = buffer;
     root["value"] = value;
   });
 }