[number] Add sensor platform (#15125)

esphome/components/number/sensor/__init__.py

@@ -0,0 +1,25 @@
+import esphome.codegen as cg
+from esphome.components import sensor
+import esphome.config_validation as cv
+from esphome.const import CONF_SOURCE_ID
+
+from .. import Number, number_ns
+
+NumberSensor = number_ns.class_("NumberSensor", sensor.Sensor, cg.Component)
+
+
+CONFIG_SCHEMA = (
+    sensor.sensor_schema(NumberSensor)
+    .extend(
+        {
+            cv.Required(CONF_SOURCE_ID): cv.use_id(Number),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+)
+
+
+async def to_code(config):
+    source = await cg.get_variable(config[CONF_SOURCE_ID])
+    var = await sensor.new_sensor(config, source)
+    await cg.register_component(var, config)

esphome/components/number/sensor/number_sensor.cpp

@@ -0,0 +1,16 @@
+#include "number_sensor.h"
+#include "esphome/core/log.h"
+
+namespace esphome::number {
+
+static const char *const TAG = "number.sensor";
+
+void NumberSensor::setup() {
+  this->source_->add_on_state_callback([this](float value) { this->publish_state(value); });
+  if (this->source_->has_state())
+    this->publish_state(this->source_->state);
+}
+
+void NumberSensor::dump_config() { LOG_SENSOR("", "Number Sensor", this); }
+
+}  // namespace esphome::number

esphome/components/number/sensor/number_sensor.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "../number.h"
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome::number {
+
+class NumberSensor : public sensor::Sensor, public Component {
+ public:
+  explicit NumberSensor(Number *source) : source_(source) {}
+  void setup() override;
+  void dump_config() override;
+
+ protected:
+  Number *source_;
+};
+
+}  // namespace esphome::number

tests/components/number/common.yaml

@@ -0,0 +1,13 @@
+number:
+  - platform: template
+    name: "Test Number"
+    id: test_number
+    optimistic: true
+    min_value: 0
+    max_value: 100
+    step: 1
+
+sensor:
+  - platform: number
+    name: "Test Number Value"
+    source_id: test_number

tests/components/number/test.esp32-idf.yaml

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+packages:
+  common: !include common.yaml

tests/components/number/test.esp8266-ard.yaml

@@ -0,0 +1,2 @@
+packages:
+  common: !include common.yaml