main.c

TMS320VC5509的dsp中断程序主程序

#include "myapp.h"
#define REV_SND   /*define : rcv undefine : snd*/
void INTR_init( void );
void EMIF_init(void);
#define UART_BASE_ADDR			0x400400
#define RBR				*((int *)(UART_BASE_ADDR+0))
#define THR				*((int *)(UART_BASE_ADDR+0))	
#define IER				*((int *)(UART_BASE_ADDR+1))
#define IIR				*((int *)(UART_BASE_ADDR+2))	
#define FCR				*((int *)(UART_BASE_ADDR+2))	
#define LCR				*((int *)(UART_BASE_ADDR+3))
#define MCR				*((int *)(UART_BASE_ADDR+4))
#define LSR				*((int *)(UART_BASE_ADDR+5))
#define MSR				*((int *)(UART_BASE_ADDR+6))
#define SCR				*((int *)(UART_BASE_ADDR+7))
#define DLL				*((int *)(UART_BASE_ADDR+0))
#define DLM				*((int *)(UART_BASE_ADDR+1))

#define BUFSIZE    8             //接收缓存大小 单位为byte

char cString[17]={ "Hello PC!,Over|" },cReceive,cBuffer[BUFSIZE]={"\0x0"},cAnswer[16]={"Oh,you say"};
int test;
main()
{   
	
    EMIF_init();
   	INTR_init();
   	test=0;
    //-----------------------------------------
    LCR = 0x80; 
    DLL = 0x18;   
	DLM = 0x00;  
    LCR = 0x03;    
    FCR = 0x00;    
    MCR = 0x20;    
#ifdef REV_SND    
    IER = 0x01;
#else
    IER = 0x02;
#endif         
    for(;;);
}

void interrupt uart_int( void )   //串口中断服务程序
{
  #ifdef REV_SND    
      test=RBR&0xff;    
#else
    THR=test;
#endif         


   
}

void INTR_init( void )
{
	IVPD=0xd0;
	IVPH=0xd0;
	IER0=0x04;    // set according to UART
	DBIER0=0x04;
	IFR0=0xffff;
	asm(" BCLR INTM");

}

void EMIF_init(void)
{
    
    ioport unsigned int *ce21  =(unsigned int *)0x809; //ce2空间寄存器1
    *ce21 = 0x1fff;
}