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stm32-course-old/Examples/I2C_AHT20/Readme.md

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初始化版本
2 years ago
# 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