ʾʹõԴ
I2C1_SCL     ------- PB8
I2C1_SDA     ------- PB9
EEPROMͺţM24128


ʾḶ́
1ϵϵͳʱӣPLLΪʱԴ48M
2ʼI2C1GPIO
3I2CĹʱΪPCLK48MʼI2C1ΪģʽͨΪ100Kֵ
4I2C1EEPROMд̣ѯʽ
   EEPROMַ0x0000д8ֽݣ
   EEPROMַ0x00008ֽݣ
