芯圣HC89F303单片机IIC通信问题,主机读取从机数据该如何操作? -

标题: 芯圣HC89F303单片机IIC通信问题,主机读取从机数据该如何操作? [打印本页]

作者: slm152982014 时间: 2021-4-10 14:25
标题: 芯圣HC89F303单片机IIC通信问题,主机读取从机数据该如何操作?

/*******************************************************
主机给从机发送数据
*******************************************************/
void IIC_Send_Pack(unsigned char fuc_Data)
{
/* Step1 */
      IICCON &=~ 0x08;
      IICCON |= 0x20;
      while((!(IICCON&0x08))&&(IICSTA!=0x08));
/* Step2 */
      IICCON &=~ 0x20;
      IICCON &=~ 0x08;
      IICDAT = DEVICEADD;
      while((!(IICCON&0x08))&&(IICSTA!=0x18));
/* Step3 */
      IICCON &=~ 0x08;
      IICDAT = fuc_Data;
      while((!(IICCON&0x08))&&(IICSTA!=0x28));
      IICCON &=~ 0x08;
      IICCON |= 0x10;
}

/***************************************************************************************
从机接收数据
***************************************************************************************/
void IIC_Rpt(void) interrupt IIC_VECTOR
{
switch (IICSTA)
{
      case 0x00:
                     IICCON |= 0x10;
         break;

      case 0x60:
                     IICCON |= 0x04;
         break;

      case 0x68:
         while(1);
         break;

      case 0x80:
         IIC_RED_BUF[IIC_CNT] = IICDAT;
                                             IIC_CNT++;
                                             IIC_DECODE_EN =1;
                                             if(IIC_CNT>6)
                                             {
                                                      IIC_CNT =0;
                                                      IIC_DECODE_EN =1;
                                             }
                                             IICCON|=0x04;
         break;

      case 0x88:
         IIC_RED_BUF[IIC_CNT] = IICDAT;
                                             IIC_CNT++;
                                             IIC_DECODE_EN =1;
                                             if(IIC_CNT>6)
                                             {
                                                      IIC_CNT =0;
                                                      IIC_DECODE_EN =1;
                                             }
                                             IICCON|=0x04;
         break;
      case 0xA8:
                                             IICDAT = temperature;

                                             IICCON|=0x04;
                                             break;
   case 0xB8:
                                             IICDAT = temperature;

                                             IICCON|=0x04;
                                             break;

   case 0xC0:
                                             IICCON|=0x04;
                                             break;

   case 0xC8:
                                             IICCON|=0x04;
                                             break;
}
IICCON&=~ 0x08;
}

请问主机读取从机数据该如何操作

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