ʾʹõԴ
I2C1_SCL     ------ PB8
I2C1_SDA     ------ PB9

ʾḶ́
1ϵϵͳʱӣPLLΪʱԴΪ48M
2ʼI2C1GPIO
3I2C1ĹʱΪPCLK48MʼI2C1ΪģʽͨΪ100Kֵ
4̣Ѱַдʹģʽ260ֽݣ
5̣ѰַͶʹģʽ260ֽݣ


