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


ʾḶ́
1ϵϵͳʱӣPLLΪʱԴ48M
2ʼI2C1GPIO
3ʼI2C1ͺͽDMAͨ
4I2C1ĹʱΪPCLK48MʼI2C1ΪģʽͨΪ100Kֵ
5I2C1DMAͨİ˲
6I2C1DMAͨİ˲
7I2C1EEPROM DMAʽд̣
   EEPROMַ0x0000д8ֽݣ
   EEPROMַ0x00008ֽݣ
