MC9S12XDP512的CAN无法同时发送多条报文

lsj19851118 · 发表于 2013-9-26 17:39:24

我在挑CAN通讯采用单片机的CAN0与CAN4进行收发报文，大概收发30条左右，但是采用CAN0定时发送时，只发送一条报文没问题，可是发送多条报文，CAN总线上就什么都没有了。CAN4定时发送没有问题，折是为什么呢？以下是周期发送的程序：

switch(CAN_cyclic_timeslice)               //CAN_cyclic_timeslice是循环周期，5ms发送一条报文，每个CAN发送周期为100ms
        {
          case 0:   // // 0x1F6
CANFillFrame(&CANsendFrame2,Gateway_2.CAN_ID,Id_Standard,CAN_RTR_Data,Gateway_2.Data.Bytes,Gateway_2.DLC, 0);
          //CANSendFrame0(&CANsendFrame2);
            break;
          case 1:     //0x620   100ms

            IGW_1.Data.Bits.BCM_BrakeSwitch=SP_status.Bit.BIT0;
          CANFillFrame(&CANsendFrame1,IGW_1.CAN_ID,Id_Standard,CAN_RTR_Data,IGW_1.Data.Bytes,IGW_1.DLC, 0);
         CANSendFrame0(&CANsendFrame1);
            break;

         case 2: // 0x1F0
CANFillFrame(&CANsendFrame3,DSCU_Cmd.CAN_ID, Id_Standard, CAN_RTR_Data,DSCU_Cmd.Data.Bytes,DSCU_Cmd.DLC,1);
         CANSendFrame4(&CANsendFrame3);
   break;
         case 3:       // BCM1_1 0x1D8   100ms
           BCM1_1.Data.Bits.BCM_FootLightErrorSt=RFootLight & FFootLight;
           CANFillFrame(&CANsendFrame1,BCM1_1.CAN_ID, Id_Standard, CAN_RTR_Data,BCM1_1.Data.Bytes,BCM1_1.DLC, 1);
         CANSendFrame4(&CANsendFrame1);
           break;
         case 4:    // 0x1D2
            CANFillFrame(&CANsendFrame2,DDCU_3.CAN_ID, Id_Standard, CAN_RTR_Data,DDCU_3.Data.Bytes,DDCU_3.DLC,1);
         CANSendFrame4(&CANsendFrame2);
           break;
         case 5:    //0x82   100ms
         CANFillFrame(&CANsendFrame3,PassiveStartCheck_PEPS.CAN_ID, Id_Standard, CAN_RTR_Data,PassiveStartCheck_PEPS.Data.Bytes,PassiveStartCheck_PEPS.DLC,1);
         CANSendFrame4(&CANsendFrame3); //0x82
           break;
         case 6:    // 0x192
            CANFillFrame(&CANsendFrame2,PEPS_TyreInformation.CAN_ID, Id_Standard, CAN_RTR_Data,PEPS_TyreInformation.Data.Bytes,PEPS_TyreInformation.DLC,1);
         CANSendFrame4(&CANsendFrame2);
           break;
          case 7:   //0x1DC 100ms
           BCM2_1.Data.Bits.BCM_BrakeSwitch=SP_status.Bit.BIT0;
           CANFillFrame(&CANsendFrame1,BCM2_1.CAN_ID, Id_Standard, CAN_RTR_Data,BCM2_1.Data.Bytes,BCM2_1.DLC, 1);
         CANSendFrame4(&CANsendFrame1);
           break;
         case 8:    // 0x190
         CANFillFrame(&CANsendFrame2,PEPS_TyreStauts.CAN_ID, Id_Standard, CAN_RTR_Data,PEPS_TyreStauts.Data.Bytes,PEPS_TyreStauts.DLC,1);
         CANSendFrame4(&CANsendFrame2);
          break;
          case 9:    // //0x1D0 100ms
         CANFillFrame(&CANsendFrame3,PEPS_1.CAN_ID, Id_Standard, CAN_RTR_Data,PEPS_1.Data.Bytes,PEPS_1.DLC,1);
         CANSendFrame4(&CANsendFrame3);
           break;

         case 10:     //0x1E6:
           CANFillFrame(&CANsendFrame1,DDCU_2.CAN_ID, Id_Standard, CAN_RTR_Data,DDCU_2.Data.Bytes,DDCU_2.DLC,1);
        CANSendFrame4(&CANsendFrame1);
            break;
         case 11: // 0x1E8:
           CANFillFrame(&CANsendFrame1,PDCU_1.CAN_ID, Id_Standard, CAN_RTR_Data,PDCU_1.Data.Bytes,PDCU_1.DLC,1);
         CANSendFrame4(&CANsendFrame1);
           break;
         case 12:       // 0x1EA:
          CANFillFrame(&CANsendFrame3,PDCU_2.CAN_ID, Id_Standard, CAN_RTR_Data,PDCU_2.Data.Bytes,PDCU_2.DLC,1);
         CANSendFrame4(&CANsendFrame3);
           break;
         case 13:    // 0x1EC:
           CANFillFrame(&CANsendFrame3,RLDCU_1.CAN_ID, Id_Standard, CAN_RTR_Data,RLDCU_1.Data.Bytes,RLDCU_1.DLC,1);
          CANSendFrame4(&CANsendFrame3);
           break;
         case 14:    //0x1EE:
           CANFillFrame(&CANsendFrame3,RRDCU_1.CAN_ID, Id_Standard, CAN_RTR_Data,RRDCU_1.Data.Bytes,RRDCU_1.DLC,1);
         CANSendFrame4(&CANsendFrame3);
           break;
         case 15:

   CANFillFrame(&CANsendFrame1,Gateway_3.CAN_ID, Id_Standard, CAN_RTR_Data,Gateway_3.Data.Bytes,Gateway_3.DLC, 0);
          CANSendFrame0(&CANsendFrame1);
           break;
          case 16:   //0x29A
CANFillFrame(&CANsendFrame2,DVD_2.CAN_ID, Id_Standard, CAN_RTR_Data,DVD_2.Data.Bytes,DVD_2.DLC, 0);
         CANSendFrame0(&CANsendFrame2);

           break;

          case 17:    // /// 0x1E4:
           CANFillFrame(&CANsendFrame4,DDCU_1.CAN_ID, Id_Standard, CAN_RTR_Data,DDCU_1.Data.Bytes,DDCU_1.DLC,1);
         CANSendFrame4(&CANsendFrame4);
           break;
          default:break;
        }
注：CANSendFrame0（）是采用CAN的第0通道发送   CANSendFrame4是采用CAN的第四通道发送报文

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