candeal0.h

这是《C8051F系列单片机开发与C语言编程》 配套的源代码

//////////////candeal0.h/////////////////////
#include "can.h"
void transmit (char MsgNum) 
{	uchar num;
   	SFRPAGE = CAN0_PAGE;
	CAN0ADR = IF1CMDMSK;          
	CAN0DAT = 0x0087;             
	/*   IF1 Command Mask Registers  =0x0087
	WR/RD=1,Mask=0,Arb=0,Control=0,ClrIntPnd=0,TxRqst=1,DataA=1,DataB=1,一次发送8字节数据*/
	CAN0ADR = IF1DATA1;           
	/*将8字节数据写入IF1*/
	for(num=0;num<8;num++){
		CAN0DATH=sdata[num];
		num++;
		CAN0DATL=sdata[num];
	}
      	CAN0ADR = IF1CMDRQST;         
	CAN0DATL = MsgNum; //将以上配置写入MsgNum号CAN消息
}
void receive_data (uchar MsgNum)
{
   	uchar i;
   	SFRPAGE = CAN0_PAGE;
	CAN0ADR = IF2CMDMSK;       	
	CAN0DATL = 0x0f;          
	/*   IF1 Command Mask Registers  =0xxx0f
	WR/RD=0,Mask=0,Arb=0,Control=0,ClrIntPnd=1,NewDat=1,DataA=1,DataB=1,一次发送8字节数据*/
	CAN0ADR = IF2CMDRQST;      	
	CAN0DATL = MsgNum; //指向MsgNum号消息      	   
	CAN0ADR = IF2DATA1;     	 
	for(i=0;i<4;i++)
		rdata[i].tempval=CAN0DAT;//接收数据
	isnewdata=1;
 }