timer3.c

dsp tmslf2407a 汇编,c的原代码,包括i2c,scitimer,fir等的很多程序.

#include "typedef.h"
#include "f2407regs_c.h" 

extern uchar counterTime;     
extern uchar b_com_success;
extern uchar b_com_counter;   
extern uchar bFlashError;
extern uchar flashErrorCounter;

extern uchar  syncTimeoutCounter;
extern uchar syncTimeoutFlag ;
extern uchar syncTimeoutCounter_out;
extern uchar syncTimeoutFlag_out;   
extern uchar bReadTag;
extern uchar readTagCounter;

extern uchar bReadyReadTag;   
extern uchar readyReadCounter;

extern uchar bPowerUp;   
extern uchar PowerUpCounter;

extern uchar bAlarm ;   
extern uchar alarmCounter;

extern uchar bufferReadCouner;
extern uchar scanReadCounter;

void initTimer3(); 
void interrupt T3INT(void);

void initTimer3()
{
	asm(" setc SXM");
	asm(" clrc OVM");
	asm(" clrc CNF");
		 
	IMR |= 0x02;	// int2  
	IFR = 0xffff;	 	
	EVBIMRA |= 0x0080;          //允许定时器3 的周期中断
   	EVBIFRA &= 0x0080;          	//清除定时器1的周期中断 
	T3CON = 0x170c;           	// x/128  
	//T3PR  = 62500;             // 200ms  added 20050825
	T3PR  = 31250;             // 100ms  added 20051129
	
   	T3CNT = 0x00;  
   	T3CON |= 0x0040;            //启动    	
}   
void interrupt T3INT(void)
{
	uint flag;    

   	flag = EVBIFRA & 0x0080;      
   	if(flag == 0x0080)
   	{
   		counterTime ++; 
   		if(bReadTag == 0x01)readTagCounter ++;
   		if(b_com_success)b_com_counter ++;	//串口通讯灯计数器    
   		if(bFlashError)flashErrorCounter ++;	//flash 错误指示灯计数器 
   		if( syncTimeoutFlag == 0x01)syncTimeoutCounter ++;   	
   		if( syncTimeoutFlag_out == 0x01)syncTimeoutCounter_out ++;  
   		if(bReadyReadTag == 1)readyReadCounter ++;	
   		if(bPowerUp == 1) PowerUpCounter ++;
   		if(bAlarm == 0x01) alarmCounter ++;
   		bufferReadCouner ++;
   		scanReadCounter ++;
   	 	
   		T3CNT = 0;  
   		EVBIFRA |= 0x080;   //clr period int flag        		
   	}
}