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

ʾḶ́
1ϵϵͳʱӣPLLΪʱԴΪ48M
2ʼI2C1GPIO
3I2C1ĹʱΪPCLK48MʼI2C1ΪģʽͨΪ100Kֵ
4̣Ѱַд󣬷8ֽݣ
5̣ѰַͶ󣬽8ֽݣ


