I2C1-Master    0x10,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A

        one board      another board
            I2C1                   I2C1
SCL:      PD5       <-->     PD5
SDA:     PD4       <-->     PD4

շ PC0 
շPC1


ע: ȸλӻٸλ

: ʹӻPD0ΪⲿĬ͵ƽİ