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标题: STM32F的232口简易MODBUS-RTU通讯程序(2) [打印本页]

作者: smartpeople 时间: 2016-7-14 21:23 标题: STM32F的232口简易MODBUS-RTU通讯程序(2)

void Modbus_Function_6(void)
{
u16 tempdress = 0;
u8 tx_flat = 0;
u16 crcresult;
tempdress = (Uart0_rev_buff[2]<<8) + Uart0_rev_buff[3];
switch(tempdress)
{
      case 0x0126:
   {
         Mkzt_bz = (Uart0_rev_buff[4]<<8) + Uart0_rev_buff[5];
         if(user_day > 0)
   {
            tx_flat = 1;
   }
      }break;
      case 0x012A:
   {
         OutX_current = (Uart0_rev_buff[4]<<8) + Uart0_rev_buff[5];
         if(user_day > 0)
   {
            tx_flat = 1;
   }
      }break;
      case 0x012C:
   {
         Jc_voltage = (Uart0_rev_buff[4]<<8) + Uart0_rev_buff[5];
         if(user_day > 0)
   {
            tx_flat = 1;
   }
      }break;
      case 0x012E:
   {
         Fc_voltage = (Uart0_rev_buff[4]<<8) + Uart0_rev_buff[5];
         if(user_day > 0)
   {
            tx_flat = 1;
   }
      }break;
      case 0x01EE:
   {
         user_day = (Uart0_rev_buff[4]<<8) + Uart0_rev_buff[5];
         tx_flat = 1;
         //eeprom_write_word (&user_day_eep,user_day);
      }break;
      default: //命令码无效不应答
            {
                  tx_flat = 0;
            }
}
if(tx_flat == 1)
{
      Uart0_send_buff[0] = Com0_id;
      Uart0_send_buff[1] = 0x06;
      Uart0_send_buff[2] = Uart0_rev_buff[2];
      Uart0_send_buff[3] = Uart0_rev_buff[3];
      Uart0_send_buff[4] = Uart0_rev_buff[4];
      Uart0_send_buff[5] = Uart0_rev_buff[5];
      Uart0_send_counter = 6;
      //UCSRB |= (1<<TXCIE)|(1<<TXEN);//发送、发送中断允许
      crcresult = getCRC16(Uart0_send_buff,Uart0_send_counter);
      Uart0_send_buff[Uart0_send_counter] = crcresult & 0xff;
      Uart0_send_buff[Uart0_send_counter+1] = (crcresult >> 8) & 0xff;
      Uart0_send_counter = Uart0_send_counter+2;
      Uart0_send_pointer = Uart0_send_buff;
         USART_SendData(USART1, *Uart0_send_pointer++);
            USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
}
}
/////////////////////////////////////////////////////////////
void Com0_Communication(void)
{
s8 i =0;
if(Uart0_rev_comflag == 1)//接收完成标志=1处理，否则退出
{
      if(Uart0_rev_buff[0] == Com0_id)//地址错误不应答
   {
         unsigned short crcresult;
         unsigned char temp[2];
         crcresult = getCRC16(Uart0_rev_buff,Crc_counter-2);
         temp[1] = crcresult & 0xff;
         temp[0] = (crcresult >> 8) & 0xff;
         if((Uart0_rev_buff[Crc_counter-1] == temp[0])&&(Uart0_rev_buff[Crc_counter-2] == temp[1]))//crc校验错误不应答
      {
            //SETBIT(PORTC,PC6);
            Delay(1);
                  switch(Uart0_rev_buff[1])
               {
                        case 0x03:
                  {
                     if(user_day > 0)
         {
                        Modbus_Function_3();
               }
         }
                        break;
                        case 0x06:
                     {
                     Modbus_Function_6();
         }
                        break;
                  }
   }
   }
      Uart0_rev_comflag = 0;
      for(i = 100;i > -1;i--)
   {
                  Uart0_rev_buff = 0;
   }
}

}
/*******************************************************************************
* Function Name  : Delay
* Description : Inserts a delay time.
* Input       : nCount: specifies the delay time length.
* Output       : None
* Return       : None
*******************************************************************************/
void Delay(vu32 nCount)
{
  for(; nCount != 0; nCount--);
}
//////////////////////////////////////////////////////////////////////////

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