can_test.c

ccs编译环境,C语言编程,CAN总线应用

///CAN BACK2BACK模式
#include "DSP28_Device.h"

void mailbox_check(int32 T1,int32 T2,int32 T3);
void mailbox_read(int16 i);

Uint32 ErrorCount;
Uint32 MessageReceiveCount;
Uint16 j;

Uint32 TestMbox1=0;
Uint32 TestMbox2=0;
Uint32 TestMbox3=0;

void main(void)
{

	InitSysCtrl();			//初始化系统

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

	InitPieCtrl();			//初始化PIE中断
	InitPieVectTable();		//初始化PIE中断矢量表
    InitECan();				//初始化SCIA寄存器
	
	MessageReceiveCount = 0;
	ErrorCount = 0;
    
    #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;   

	IER |= M_INT9;			//开中断
	#endif
	EINT;   				// Enable INTM
	ERTM;					// Enable DBGM

	for(;;)
	{
		ECanaRegs.CANTRS.all = 0x0000FFFF;
		while(ECanaRegs.CANTA.all != 0x0000FFFF);
		ECanaRegs.CANTA.all = 0x0000FFFF;
		MessageReceiveCount++;
		
		#if !CAN_INT
		for(j = 0; j < 16; j++)
		{
			mailbox_read(j);
			mailbox_check(TestMbox1,TestMbox2,TestMbox3);
		}
		#endif
	}
} 	

void mailbox_read(int16 MBXnbr)
{
   volatile struct MBOX *Mailbox;
   Mailbox = &ECanaMboxes.MBOX0 + MBXnbr;
   TestMbox1 = Mailbox->MDRL.all; 	// = 0x9555AAAn (n is the MBX number)
   TestMbox2 = Mailbox->MDRH.all; 	// = 0x89ABCDEF (a constant)
   TestMbox3 = Mailbox->MID.all;	// = 0x9555AAAn (n is the MBX number)

} 							//运行到这里

void mailbox_check(int32 T1, int32 T2, int32 T3)
{
    if((T1 != T3) || ( T2 != 0x89ABCDEF))
    {
       ErrorCount++;
    }
}