# I2C_AHT20

- 将PB6、PB7分别配置为I2C_SCL、I2C_SDA
- 在Project Manager - Code Generator中勾选Generate peripheral initialization as a pair of...
- 配置I2C1
  - I2C选择I2C

- 配置USART2为Asynchronous

- 复制dht20.c/dht20.h文件到Core的Src/Inc目录下

- API
  - DHT20_Init() 初始化AHT20
  - DHT20_Get_T_H 获取温湿度
- 注意：默认无法使用sprintf打印浮点数，需要在工程Properties - C/C++ Build - Settings - MCU Settings中，勾选Use float with printf from newlib -nano