isr.c

FLASH烧写程序

//*----------------------------------------------------------------------------
//* File Name           : isr.c
//* Object              : isr application written in C
//* Creation            : dxb   3/8/2004
//*
//*----------------------------------------------------------------------------
#include "AT91RM9200.h"
#include "lib_AT91RM9200.h"
#include "sys.h"

#include <string.h>
#include <stdio.h>

extern unsigned int US1_RxLen;
extern unsigned char  *US1_RxBuff;
extern unsigned short TC0_COUNT;
///////////////////////////////////////////////////////
extern void AT91F_ASM_US1_Handler(void);
extern void AT91F_US1_Handler(void);

void AT91F_US1_Handler()//US1中断服务程序
{
 
   unsigned int dummy;
    
   dummy= *AT91C_US1_CSR;
   
   TC0_COUNT = 0;
   
   if(dummy & AT91C_US_RXRDY)
   {
      
      US1_RxBuff[US1_RxLen] = (unsigned char)(*AT91C_US1_RHR);
       
      US1_RxLen++;
    
   }
   
    *AT91C_AIC_EOICR = 0x00000000;
    
	
 }


void AT91F_TC0_Handler()//TC0_中断服务程序
{
    unsigned int dummy;
    dummy=*AT91C_TC0_SR;   //必须读取状态寄存器，才能再次产生比较中断
    dummy=*AT91C_TC0_SR;     
    dummy=*AT91C_TC0_SR;                    //clear
    
	if(TC0_COUNT == 0)
	   TC0_COUNT = 1;
	else if (TC0_COUNT == 1)
	   TC0_COUNT = 2;
	else if (TC0_COUNT == 2)
       TC0_COUNT = 3;
    
    *AT91C_AIC_EOICR = 0x00000000;


}