void I2C_write(u8 Addr, u8 *WriteData, u8 length){  /* Send STRAT condition */  I2C_GenerateSTART(ENABLE);  /* Test on EV5 and clear it */  while(!I2C_CheckEvent(I2C_EVENT_MASTER_START_SENT));   /* Send EEPROM address for write */  I2C_Send7bitAddress(Addr, I2C_DIRECTION_TX);    /* Test on EV6 and clear it */  while(!I2C_CheckEvent(I2C_EVENT_MASTER_ADDRESS_ACKED));   I2C_ClearFlag(I2C_FLAG_ADDRESSSENTMATCHED);// must add     for(int i = 0; i
     
      SR3&0x02); I2C->CR2 |= 0x01; while(!(I2C->SR1 & 0x01)); I2C->DR = ReadAddr; while(!(I2C->SR1 & 0x02));  I2C->SR1;  I2C->SR3; while(NumByteToRead)  {  if(NumByteToRead == 1)     {      I2C->CR2 &= ~0x04;       I2C->CR2 |= 0x02;     }      if(I2C->SR1 & 0x40)    {         *pBuffer=I2C->DR;       pBuffer++;         NumByteToRead--;            }        }     I2C->CR2 |= 0x04;}
     

有其他选择千万不要选择STM8，太难用了。