关键代码属于传感器类bmp280库，使用I2C通信，端口是（gpio4，gpio4)实体温度和气压传感器

# Example configuration entry sensor:   - platform: bmp280     temperature:       name: "Outside Temperature"       oversampling: 16x     pressure:       name: "Outside Pressure"     address: 0x76     update_interval: 60s

2. 配置变量：

BMP280 上引脚。只需连接 VCC、GND、SCL 和 SDA。

3. 过采样选项

默认情况下，BMP280 传感器在要求新值时测量每个值 16 次。但是，您可以配置此金额。可能的过采样值：

• NONE（跳过值）

• 1x

• 2x

• 4x

• 8x

• 16x（默认）

4.实验过程

我使用的硬件是esp8266，实验跟着ESPHome 和 Home Assistant点灯握手，完整代码如下

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 需要修改wifi和密码

esphome:
  name: nodemcu2

esp8266:
  board: nodemcuv2

# Enable logging
logger:

# Enable Home Assistant API
api:


ota:
  password: "5cfd2ba5fb1dc3de97f106ce85c6ea2e"
  


wifi:
  ssid: "J09 502"
  password: "qwertyuiop111" 

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Nodemcu2 Fallback Hotspot"
    password: "HScsa8m334hV"
    


captive_portal: 

# Example configuration entry for ESP8266（https://esphome.io/components/i2c.html#i2c）
i2c:
  - id: bus_a
    sda: 4
    scl: 5
    scan: true

# Example configuration entry
sensor:
#（https://esphome.io/components/sensor/bme280.html）sda:D2 ,scl:D1
  - platform: bmp280
    i2c_id: bus_a
    address: 0x76
    temperature:
      name: "Outside Temperature"
      oversampling: 16x
    pressure:
      name: "Outside Pressure"
    update_interval: 10s
    
  - platform: adc #（https://esphome.io/cookbook/temt6000.html）A0
    pin: A0
    name: "TEMT6000 Illuminance"
    device_class: illuminance
    unit_of_measurement: lx
    filters:
      - lambda: |-
          return (x / 10000.0) * 2000000.0;
    update_interval: 10s


# Enable switch gpio2(D4.D8)
switch:
  - platform: gpio
    name: "Living Room Power"
    pin: D4
  - platform: gpio
    name: "Living Room Buzzerr"
    pin: D8
    

# Enable switch gpio0(D3)
binary_sensor:
  - platform: gpio
    name: "Living Room Window"
    pin:
      number: 0
      inverted: true
      mode:
        input: true
        pullup: true

        点击install，择wirelessly（记住需要你的设备完成上一实验才能OTA升级，并且保持设备在线，这样就可以上传成功啦）

​

5.  实验效果