C8051系列单片机开发与C语言编程!

				//////can.h//////////////////
				#include "C8051F040.h"	
				#include "canreg.h"
				typedef unsigned char uchar;
				typedef unsigned int uint;
				typedef unsigned long ulong;
				union intchar{
					uint tempval;
					struct {uchar hi;uchar low;}bytek;
				};
				bit isnewdata;
				data uchar temppage;
				data uchar status;
				xdata uchar sdata[8]={0x32,0x33,0x34,0x35,0xb2,0xb3,0xb4,0xb5};//发送缓冲区
				xdata union intchar rdata[4];
				void init_msg_object_TX (uchar MsgNum,uchar id);
				void init_msg_object_RX (uchar MsgNum,uchar id);
				void clear_msg_objects (void);
				void start_CAN (void);
				void init_msg_object_TX (char MsgNum,uint id) 
				{
					uint temp;
				  	SFRPAGE = CAN0_PAGE;
					CAN0ADR = IF1CMDMSK; //指向IF1 Command Mask Registers
					CAN0DAT = 0x00b3; 
					/*   IF1 Command Mask Registers  =0x00b3 
					WR/RD=1,Mask=0,Arb=1,Control=1,ClrIntPnd=0,TxRqst=0,DataA=1,DataB=1,一次发送8字节数据*/
					CAN0ADR = IF1ARB1;            
					CAN0DAT = 0x0000;  
					/*IF1 Arbitration Registers1 =0x0000，即ID15-0=0*/
					temp=id					temp&=0x1fff;
					temp|=0xa000;
					CAN0DAT = temp; //地址自增，指向IF1 Arbitration Registers2
					/*IF1 Arbitration Registers2=101(id)00b
					MsgVal=1,Xtd=0,为标准模式，扩展ID无效，Dir=1，为发送*/
					CAN0DAT = 0x0088;
					/*IF1 Message Control Registers=0x0088
					NewDat=0,MsgLst=0,IntPnd=0,UMask=0,TxIE=0,RxIE=0,RmtEn=0,TxRqst=0
					EoB=1,DLC3-0=1000,即数据长度为8*/
					CAN0ADR = IF1CMDRQST;         
					CAN0DAT = MsgNum;   
					/*IF1 Command Request Registers=MsgNum,将以上配置写入MsgNum号消息*/
				}
				void init_msg_object_RX (char MsgNum,uchar id) 
				{
					uint temp;
				   	SFRPAGE = CAN0_PAGE;
					CAN0ADR = IF2CMDMSK; 
					CAN0DAT = 0x00bb;             
					/*   IF2 Command Mask Registers  =0x00bb 
					WR/RD=1,Mask=0,Arb=1,Control=1,ClrIntPnd=1,TxRqst=0,DataA=1,DataB=1,一次发送8字节数据*/
					CAN0ADR = IF2ARB1;           
					CAN0DAT = 0x0000; 
					/*IF2 Arbitration Registers1 =0x0000，即ID15-0=0*/            
					temp=id					temp&=0x1fff;
					temp|=0x8000;
					CAN0DAT = temp; 
					/*IF2 Arbitration Registers2=100(id)00b
					MsgVal=1,Xtd=0,为标准模式，扩展ID无效，Dir=0，为接收*/
					CAN0DAT = 0x0488;
					/*IF2 Message Control Registers=0x0488
					NewDat=0,MsgLst=0,IntPnd=0,UMask=0,TxIE=0,RxIE=1,接收中断使能;RmtEn=0,TxRqst=0
					EoB=1,DLC3-0=1000,即数据长度为8*/
					CAN0ADR = IF2CMDRQST;        
					CAN0DATL = MsgNum;           
				  	/*IF2 Command Request Registers=MsgNum,将以上配置写入MsgNum号消息*/
				}
				void clear_msg_objects (void) //将所有消息清零
				{	
					uchar i;
				   	SFRPAGE = CAN0_PAGE;
					CAN0ADR = IF1CMDMSK;       
					CAN0DATL = 0xFF;            
					for (i=1;i				      {
						CAN0ADR = IF1CMDRQST;     
						CAN0DATL = i;
				      }   
				}
				void start_CAN (void) 
				{
				   	SFRPAGE = CAN0_PAGE;
					CAN0CN= 0x02;	
					/*IE置1，使能CAN模块中断，Init清零，结束初始化操作，CAN控制器进入正常工作*/
					
				}