e_display.c

基于AVR单片机的电池容量显示 开发环境 I

//ICC-AVR application builder : 2006-11-16 18:54:41
// Target : M48
// Crystal: 1.0000Mhz

#include <iom88v.h>
#include <macros.h>
#include <eeprom.h>
#define Vref 1101
//设定充电设定时间3600秒
#define charge_settime 3600
//battery_adc_count 电池电压采样数组
#define battery_adc_count 60 
#define V_1000 593
//10.05V
#define V_10  596 
//10.12V   
#define V_20  600
//10.28
#define V_40  609
//10.44
#define V_60  619
//10.60
#define V_80  628
//11.20
#define V_100 664

//#define Vin_960 (int)680*9600*1024/10680/Vref
//#define Vin_1123 (int)680*11230*1024/10680/Vref



unsigned long d1,d2,d3,d4,d5,d6,d7;
unsigned char battery_stat; //1:停 2:充电  3:放电
unsigned int battery_adc[battery_adc_count],capacity,battery_adc_0s,battery_adc_1s,battery_adc_2s; //电容量
unsigned char watchdog_flag,led,clocks100ms,clocks1s,delay_time;
unsigned int clocks2s,clocks10s,clocks600s,charge_time,res_time;
unsigned int battery_rel,Vin_960,Vin_1123,Vin_h_l,V_discharge,V_charge;
unsigned char battery_adc_ip=0;
unsigned int battery_adc_now,battery_discharge_before,battery_charge_before;
unsigned int battery_discharge_V1,battery_charge_V1;
unsigned char battery_discharge_time,battery_discharge_ip,detect_charge_time;
unsigned char charge_end;
unsigned int battery_temperature;
unsigned char V_up,V_down,battery_dis_flag,j;
unsigned int battery_adc_q,i;
unsigned int battery_stat_6;
unsigned int V_eeprom,V_1120,V_1104,V_1088,V_1072,V_1040,V_1008;

unsigned int  calculate_capacity(unsigned int cc)  //计算电量
{
  unsigned int aa;
  if (cc>V_1120)
    {
	  aa=100;
	}
  else
    {
	  if (cc>V_1104)
	     {
		   aa=100;
		 }
	  else
	     {
		   if (cc>V_1088)
		      {
			    aa=(cc-V_1088)*20/(V_1104-V_1088);
				aa+=60;
			  }
		   else
		      {
			     if (cc>V_1072)
				    {
					   aa=(cc-V_1072)*20/(V_1088-V_1072);
					   aa+=40;
					}
			     else
				    {
					   if (cc>V_1040)
					      {
						     aa=(cc-V_1040)*20/(V_1072-V_1040);
							 aa+=20;
						  }
					   else
					      {
						     if (cc>V_1008)
							    {
								  aa=(cc-V_1008)*10/(V_1040-V_1008);
								  aa+=10;
								}
							 else
							   {
							     aa=0;
							   }
						  }  
					}
			  }
		 }
	}
	//aa=45;
	//WDR(); //this prevents a timout on enabling
	//EEPROM_WRITE(0xb0,aa);
	return(aa);	
}

void battery_temperature_display(void)//超温显示
{
   if (clocks2s%400==0)
    {
	  PORTD=0x28;
	}
  if (clocks2s%400==40)
    {
	  PORTD=0x20;
	}
}

void over_loading_display(void) //过载显示
{
  if (clocks1s%200==0)
    {
	  PORTD=0x1f;
	}
  if (clocks1s%200==40)
    {
	  PORTD=0x00;
	}
}

void led_display(void)
{
 
  if (battery_dis_flag==1) //停止使用显示
    {
	   if (capacity<10 )
         {
	        if (clocks1s==0) PORTD=0x01;
	        if (clocks1s==20) PORTD=0x00;
	     }
	   else
	     {
	       if (clocks2s==0)
		     {
	           if (capacity<20)    
	               PORTD=0x01;
	           else
                  if (capacity<40 )
                      PORTD=0x02;
	         	  else
                      if (capacity<60)
                          PORTD=0x04;
	                  else
                          if (capacity<80)
                              PORTD=0x08;
	                      else
                              PORTD=0x10;//电量大于80%
	          }
		    if (clocks2s==40)
		        PORTD=0x00;
	      }
      // PORTD|=0x20;
	}
	
  if (battery_dis_flag==2)
   	{
	       if (charge_time<=charge_settime/10 ) //充电总时间小于10%
              {
	            if (clocks1s==0) PORTD=0x01;
	            if (clocks1s==20) PORTD=0x00;
	          }
	        else  
    		   if (charge_time<=(charge_settime*2/10))  //充电总时间小于20% 
	               PORTD=0x01;
	           else
                  if (charge_time<=(charge_settime*4/10)) //充电总时间小于40%
                      PORTD=0x03;
	         	  else
                      if (charge_time<=(charge_settime*6/10)) //充电总时间小于60%
                          PORTD=0x07;
	                  else
                          if (charge_time<=(charge_settime*8/10)) //充电总时间小于80%
                              PORTD=0x0f;
	                      else
                              if (charge_time<=charge_settime) //充电总时间小于100%
							      PORTD=0x1f;
	                          
							  else
							     {
								   PORTD=0x1f;
								   /*
								   if (clocks2s==0)
								       PORTD=0x10;
								   if (clocks2s==40)
		                               PORTD=0x00;
									   */
								 }
							  
		  //PORTD|=0x20;
	}
	
	
  if (battery_dis_flag==3)
    {
	       if (capacity<10 )
              {
	            if (clocks1s==0) PORTD=0x01;
	            if (clocks1s==20) PORTD=0x00;
	          }
	        else  
    		   if (capacity<20)    
	               PORTD=0x01;
	           else
                  if (capacity<40 )
                      PORTD=0x03;
	         	  else
                      if (capacity<60)
                          PORTD=0x07;
	                  else
                          if (capacity<80)
                              PORTD=0x0f;
	                      else
                              PORTD=0x1f;//电量大于80%
	  
	    //PORTD|=0x20;
	}
  
 
}


//TIMER2 initialize - prescale:32
// WGM: Normal
// desired value: 200Hz
// actual value: 200.321Hz (0.2%)
void timer2_init(void)
{
 TCCR2B = 0x00; //stop
 ASSR  = 0x00; //set async mode
 TCNT2 = 0x64; //setup
 OCR2A = 0x9C;
 OCR2B = 0x00;
 TCCR2A = 0x00; 
 TCCR2B = 0x03; //start
}

#pragma interrupt_handler timer2_ovf_isr:10
void timer2_ovf_isr(void)
{
 TCNT2 = 0x64; //reload counter value
 watchdog_flag=1; 
 PORTB^=0x80;//输出校准频率方波
 clocks1s++;
 clocks2s++;
 if (clocks1s>=200) //1秒钟到
   {
     clocks1s=0;
	 res_time++;
	 if (res_time>5400)
	   {
          battery_stat=1; //过时回到停止状态
	   }
	 battery_adc[battery_adc_ip]=battery_adc_0s;
	 battery_adc_ip++;
	 if (battery_adc_ip>=battery_adc_count)
	     battery_adc_ip=0;
	 battery_adc_2s=battery_adc_1s;
	 battery_adc_1s=battery_adc_0s;
	 battery_adc_0s=0;
	 if (battery_dis_flag==2 && charge_time<10000) //充电计时 
	   {
	     charge_time++;
	   }
	
   }
 if (clocks2s>=400) //2秒钟到
   {
     clocks2s=0;
   }
   
   
 if (clocks1s%200==0)  //采样电压值,每1000ms采样1次
	{
		   battery_rel=ADC&0x3ff; //读ADC
		   ADMUX = 0xC0;  //select adc input 1
		   ADCSRA|=(1<<ADSC); //启动AD转换
		   battery_adc_0s=battery_rel;
		   
		   
//***************开机时状态*********************************  
		   if (battery_stat==0) //开机时状态
		     {
		       battery_dis_flag=2;
			   charge_time=0;
			   battery_stat=3;
			   //V_up=0;
			 }
		   /*	 
		   if (battery_stat==20)
		     {
			    if (battery_adc_0s>battery_adc_2s)
			      {
			          V_up++;
			      }
			   else
			      {
			          V_up=0;
			      }
				charge_time++;
				if (charge_time>=10)
				    battery_stat=21;
			  }
			if (battery_stat==21)
			  {   	  
		        if (V_up>=4) //持续10秒钟上升
			      {
			        battery_stat=3; //转入充电状态
					
				  }
			    else
			      {
			        battery_stat=1; //转入停止状态
					
				  }
			 }
			 */
//*********************************************************
		   if (battery_stat==1) //停止状态
		     {
		       battery_dis_flag=1;
			   res_time=0;
			   capacity=calculate_capacity( battery_adc_0s );//计算电量