main.c

TMS320F2812的ECAN通讯测试程序

#include "DSP28_Device.h"
void mailbox_check1(int32 m,int32 n);
void mailbox_check2(int32 a,int32 b,int32 c,int32 d);
void mailbox_read(int16 i);

//定义全局变量
Uint32 ErrorCount;
Uint32 MessageReceiveCount;


extern Uint32 Tbox_MID;
extern Uint32 Tbox_MDL;
extern Uint32 Tbox_MDH;
extern Uint32 Rbox_MID;
extern Uint32 Rbox_MDL;
extern Uint32 Rbox_MDH;



void main(void)
{
	MessageReceiveCount = 0;
	ErrorCount = 0;

	/*初始化系统*/
	InitSysCtrl();

	/*关中断*/
	DINT;
	IER = 0x0000;
	IFR = 0x0000;

	/*初始化PIE中断*/
	InitPieCtrl();

	/*初始化PIE中断矢量表*/
	InitPieVectTable();	
	
	/*初始化SCAN寄存器*/
    InitECan();
	

    
    #if CAN_INT
	/*设置中断服务程序入口地址*/
	EALLOW;	 
	PieVectTable.ECAN0INTA = &ECAN0INTA_ISR;
	PieVectTable.ECAN1INTA = &ECAN1INTA_ISR;
	EDIS;   

	/*开中断*/
	IER |= M_INT9;
	#endif
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM

	for(;;)
	{
		ECanaRegs.CANTRS.all = 0x0000FFFF;
		while(ECanaRegs.CANTA.all != 0x0000FFFF)
		{;}
		ECanaRegs.CANTA.all = 0x0000FFFF;//清除CANTA寄存器
		MessageReceiveCount++;
		
	}

} 	

void mailbox_read(int16 MBXnbr)
{
	volatile struct MBOX *Mailbox_transmit;
   	volatile struct MBOX *Mailbox_recieve;
   	
   	Mailbox_transmit = &ECanaMboxes.MBOX0 + MBXnbr;
   	Mailbox_recieve = &ECanaMboxes.MBOX0 + MBXnbr + 16;
   	Tbox_MID = Mailbox_transmit->MID.all;  //发送邮箱的标识符
   	Tbox_MDL = Mailbox_transmit->MDRL.all; //发送信息数据的低四字节
   	Tbox_MDH = Mailbox_transmit->MDRH.all; //发送信息数据的高四字节
   
   	Rbox_MID = Mailbox_recieve->MID.all;   //接收邮箱的标识符
   	Rbox_MDL = Mailbox_recieve->MDRL.all;  //接收信息数据的低四字节
   	Rbox_MDH = Mailbox_recieve->MDRH.all;  //接收信息数据的高四字节
	
} 


void mailbox_check1(int32 IDT, int32 IDR)
{
    if(IDR != IDT)
    
    	ErrorCount++;
    
}


void mailbox_check2(int32 TMDL,int32 TMDH,int32 RMDL,int32 RMDH)
{
	if((RMDL != TMDL) || (RMDH != TMDH))
	
		ErrorCount++;

}