cpu.c

一款电力行业使用的温湿度控制器源代码 湿度传感器采用HF3223 温度采用DS18B20 单片机采用mega8 编程采用winavr2007

#include"inc/config.h"

BOOL            f_15ms  ;
BOOL            f_500ms ;
BOOL            f_1s        ;
BOOL            f_5s        ;
BOOL            f_60s       ;
u08			   	SYS_ch      ;
u08			  	AlrmStatusT ;
u08			 	AlrmStatusH ;
u08         	Humidity    ;
int16           Temperature ;
BOOL			f_sensor_t  ;	//温度传感器不存在
BOOL			f_sensor_h  ;
u08			    RelayBreak  ;
u08             SystemStatus;
u08             SystemMode =AUTO_TH  ;
/*******************system time base  *****************************/
#define _CPU_C    1
BOOL            f_15ms          =false;  //time base
BOOL            f_500ms         =false;  //time base
BOOL            f_1s            =false;
BOOL            f_5s            =false;
BOOL            f_60s	        =false;


//*****************************************************************//
//functionname:     void  TimerInit(void);
//purpose:		 initialize	timer by user
//input:
//output
//call:
//becalled;
//date:			2006.04.13
//created:		 
//*******************************************************************
void  TimerInit(void)
{
  /*t0 initailize*/
  /*
  TCCR0  =  0x00; 									//stop
  //TCCR0 |= (1<<CS02)|(1<<CS00);                   //1024 div
  TCCR0  = (1<<CS02);                               //256 div
  TCNT0  = TIMER0_BGN_VAL; 
  TIMSK  |=(1<<TOIE0);  */                             //enable the t0 overflow intterrupt
	
  /*t2 intialize*/
  /*  */

  TCCR2  =  0x00;  
  TCCR2  = (1<<CS22)|(1<<CS21); // T2 256分频工作
  TIMSK  |= (1<<TOIE2);                    //enable the t0 overflow intterrupt
  TCNT2   = TIMER2_BGN_VAL ;
  
  /*t0 as an counter ,count the pulse on t0 pin*/

   TCCR0  =  0x00; 	
   TCCR0  |= (1<<CS02)|(1<<CS01)|(1<<CS00);//外部上升边沿
   TCNT0   = 0 ;  

  /*TIMER1**/ 
  TCCR1B =0X00;
  TCCR1B =(1<<CS11);//8M8FENGPIN
  TIMSK  |= (1<<TOIE1);                    //enable the t0 overflow intterrupt
  TCNT1  =(65536-20000);//20MS 定时


}


void timer0_start(void)
{   
   TCCR0  |= (1<<CS02)|(1<<CS01)|(1<<CS00);//外部上升边沿
   TCNT0   = 0 ;   
}
void timer0_stop(void)
{
   TCCR0  =0x00;
}