2can_r.c

Cygnal公司的著名产品C8051f系列单片机

///////can 单消息接收程序////////////
////////2can_r.c///////////////
#include "candeal0.h"
void canini(){
	clear_msg_objects();
	init_msg_object_RX (0x04,2);//初始化发送
	init_msg_object_TX (0x02,1);
	EIE2 |= 0x20;
	EA = 1;
	SFRPAGE = CAN0_PAGE;
	CAN0CN=0X41;
	CAN0ADR=BITREG;
	CAN0DAT=0X34c0;//调波特率
	start_CAN();
}
void config(){
//看门狗禁止
	WDTCN = 0x07;	
    WDTCN = 0xDE;   
   	WDTCN = 0xAD;
	SFRPAGE = 0x0F;
//交叉开关使能，但没有进行外围设备配置
	XBR0 = 0x00;	
	XBR1 = 0x00;	
	XBR2 = 0x40;
 	XBR3 = 0x00;   
//管脚输出配置，P0口为开漏输出，其中P0.6接上拉电阻，P0为数字输入口
 	SFRPAGE = 0x0F;
 	P0MDOUT = 0x00; 
 	P1MDIN = 0xFF;  
//晶振配置，采用内部晶振8分频
	SFRPAGE = 0x0F;
 	CLKSEL = 0x00;  
	OSCXCN = 0x00;	
	OSCICN = 0x84;	
}
main(){
	config();
	canini();
	while(1);
	
}
void ISRname (void) interrupt 19

{	temppage=SFRPAGE;
   SFRPAGE = CAN0_PAGE;
   status = CAN0STA;
   if ((status&0x10) != 0){
	   CAN0STA&=0xef;
	   receive_data (0x04);
   } 
   SFRPAGE=temppage;
}