[mk2pvrouter] Add binary_sensor platform (#19719)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

esphome/components/mk2pvrouter/binary_sensor/__init__.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+from esphome.components import binary_sensor
+from esphome.const import CONF_ID, CONF_TAG
+from esphome.types import ConfigType
+
+from .. import (
+    CONF_MK2PVROUTER_ID,
+    MK2PVROUTER_LISTENER_SCHEMA,
+    mk2pvrouter_ns,
+    register_mk2pvrouter_listener,
+)
+
+Mk2PVRouterBinarySensor = mk2pvrouter_ns.class_(
+    "Mk2PVRouterBinarySensor", binary_sensor.BinarySensor, cg.Component
+)
+
+CONFIG_SCHEMA = binary_sensor.binary_sensor_schema(Mk2PVRouterBinarySensor).extend(
+    MK2PVROUTER_LISTENER_SCHEMA
+)
+
+
+async def to_code(config: ConfigType) -> None:
+    var = cg.new_Pvariable(config[CONF_ID], config[CONF_TAG])
+    await cg.register_component(var, config)
+    await binary_sensor.register_binary_sensor(var, config)
+    mk2pvrouter = await cg.get_variable(config[CONF_MK2PVROUTER_ID])
+    await register_mk2pvrouter_listener(mk2pvrouter, var)

esphome/components/mk2pvrouter/binary_sensor/mk2pvrouter_binary_sensor.cpp

@@ -0,0 +1,21 @@
+#include "mk2pvrouter_binary_sensor.h"
+#include "esphome/core/log.h"
+#include <cstring>
+
+namespace esphome::mk2pvrouter {
+
+static const char *const TAG = "mk2pvrouter_binary_sensor";
+
+Mk2PVRouterBinarySensor::Mk2PVRouterBinarySensor(const char *tag) : Mk2PVRouterListener(tag) {}
+
+void Mk2PVRouterBinarySensor::publish_val(const char *val) {
+  bool state = (strcmp(val, "0") != 0);
+  this->publish_state(state);
+}
+
+void Mk2PVRouterBinarySensor::dump_config() {
+  LOG_BINARY_SENSOR("  ", "Mk2PVRouter Binary Sensor", this);
+  ESP_LOGCONFIG(TAG, "  Tag: %s", this->get_tag());
+}
+
+}  // namespace esphome::mk2pvrouter

esphome/components/mk2pvrouter/binary_sensor/mk2pvrouter_binary_sensor.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "esphome/components/mk2pvrouter/mk2pvrouter.h"
+#include "esphome/components/binary_sensor/binary_sensor.h"
+
+namespace esphome::mk2pvrouter {
+
+class Mk2PVRouterBinarySensor final : public Mk2PVRouterListener, public binary_sensor::BinarySensor, public Component {
+ public:
+  explicit Mk2PVRouterBinarySensor(const char *tag);
+  void publish_val(const char *val) override;
+  void dump_config() override;
+};
+
+}  // namespace esphome::mk2pvrouter

tests/components/mk2pvrouter/binary_sensor/mk2pvrouter_binary_sensor_test.cpp

@@ -0,0 +1,21 @@
+#include <gtest/gtest.h>
+
+#include "esphome/components/mk2pvrouter/binary_sensor/mk2pvrouter_binary_sensor.h"
+
+namespace esphome::mk2pvrouter::testing {
+
+TEST(Mk2PVRouterBinarySensorTest, ZeroPublishesOff) {
+  Mk2PVRouterBinarySensor sensor("R1");
+  sensor.publish_val("0");
+  ASSERT_TRUE(sensor.has_state());
+  EXPECT_FALSE(sensor.state);
+}
+
+TEST(Mk2PVRouterBinarySensorTest, OnePublishesOn) {
+  Mk2PVRouterBinarySensor sensor("R1");
+  sensor.publish_val("1");
+  ASSERT_TRUE(sensor.has_state());
+  EXPECT_TRUE(sensor.state);
+}
+
+}  // namespace esphome::mk2pvrouter::testing

tests/components/mk2pvrouter/common.yaml

@@ -59,3 +59,10 @@ sensor:
     name: Relay 10 State
     tag: R10
     mk2pvrouter_id: test_mk2pvrouter
+
+binary_sensor:
+  # Test relay as binary sensor
+  - platform: mk2pvrouter
+    name: Relay 2 Binary
+    tag: R2
+    mk2pvrouter_id: test_mk2pvrouter