Add support for LYWSD02MMC Xiaomi device (#7080)

esphome/components/xiaomi_lywsd02mmc/xiaomi_lywsd02mmc.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
+#include "esphome/components/xiaomi_ble/xiaomi_ble.h"
+
+#ifdef USE_ESP32
+
+namespace esphome {
+namespace xiaomi_lywsd02mmc {
+
+class XiaomiLYWSD02MMC : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
+ public:
+  void set_address(uint64_t address) { this->address_ = address; }
+  void set_bindkey(const std::string &bindkey);
+
+  bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
+
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::DATA; }
+  void set_temperature(sensor::Sensor *temperature) { this->temperature_ = temperature; }
+  void set_humidity(sensor::Sensor *humidity) { this->humidity_ = humidity; }
+  void set_battery_level(sensor::Sensor *battery_level) { this->battery_level_ = battery_level; }
+
+ protected:
+  uint64_t address_;
+  uint8_t bindkey_[16];
+  sensor::Sensor *temperature_{nullptr};
+  sensor::Sensor *humidity_{nullptr};
+  sensor::Sensor *battery_level_{nullptr};
+};
+
+}  // namespace xiaomi_lywsd02mmc
+}  // namespace esphome
+
+#endif