main.c

一个完整的C语言构架的串行口通信的源程序

#include "54xx.h"
#include <stdio.h>
#include "mcbsp.h"
interrupt void c_int03();
int i;
unsigned int k;
unsigned int mcbspint,receive_count;
char receive[1000],buf[1000];
unsigned int error,inData;

main()
{

	unsigned int clkPll,temp;
	clkPll=0x9007;
	InitPLL(clkPll);
	i=0;
	PMST=0xa0;				//中断装入地址0x80
	IFR=0xffff;
	IMR=0x003b;

/**************** mcbsp 初始化 **********************/
	MCBSP0_Init();

/*************** 初始化MAX3140 *****************************************/	
	MA3140_Init();    

   	mcbspint=0;
	for(;;)
	{
		enable();
    	while (mcbspint==0)			//等中断
		{
		}
		mcbspint=0;
	}  
  



}


/********** MAX3140 中断服务程序 *****************/
interrupt void c_int01()
{


	for(;;) 
	{
		inData=MA3140_Read();
		if ((inData&MA3140_RdRdy) != 0)
		{
			if (receive_count>99)
			{
				receive_count=0;
//				send_count=0;
			}
				
				receive[receive_count++]=(inData & 0x0ff);
 
		}
		if ((inData&MA3140_SendRdy) != 0)
		{
//			if ((receive_count>0)&&(send_count<receive_count))
//			{
//				send_count++;
//				sign=1;	
//			}
			break;				
		}
		if ((inData&MA3140_RdRdy) == 0)
		{
			break;
		}		

		
	}	
		
	
				
							
}