sub_main.c

一个单片机实现DA转换程序,程序实现了一个温度控制的数摸转换,并添加了去抖动处理!!

#include "iom16.h"
#include "ioavr.h"
#include "inavr.h"
#include "avr_macros.h"

#include "userdef.h"
#include "userfun.h"
#include "userram.h"
#include "usertype.h"
#include "disdata.h"


void ClearTimer1(void)
{
   TCNT1L = 0x00;
   TCNT1H = 0x00;
   TCCR1B = 0x00;	
}


void CheckWendu(void)
{
	 write_error=0;	 

   wendu_lm77=ReadLM77();
   if(wendu_lm77&0x0200)
     {
       disbuf[0]=BCDSEG_TAB[FuHao];
       wendu_lm77 = 0x1ff-wendu_lm77&0x1ff;
     }
   else
     {
       disbuf[0]=NoDisplay; 	
     }
   wendu_lm77 *= 5;
   disbuf[1]=BCDSEG_TAB[wendu_lm77/1000];
   wendu_lm77=wendu_lm77%1000;
   disbuf[2]=BCDSEG_TAB[wendu_lm77/100];
   wendu_lm77=wendu_lm77%100;
   disbuf[3]=BCDSEGDOT_TAB[wendu_lm77/10];
   wendu_lm77=wendu_lm77%10;
   disbuf[4]=BCDSEG_TAB[wendu_lm77];
   disbuf[5]=NoDisplay;
   disbcd(disbuf);
   
   if(write_error!=0)
   {
     disbuf[0]=BCDSEG_TAB[14];
     disbuf[1]=BCDSEG_TAB[14];
     disbuf[2]=BCDSEG_TAB[14];
     disbuf[3]=BCDSEG_TAB[14];
     disbuf[4]=BCDSEG_TAB[14];
     disbuf[5]=BCDSEG_TAB[14];
     disbcd(disbuf);     		
   }   
}


void GainChannel(void)
{	
	 if(gain_F)
	   {
	      gain_F=0;  	
	   	  Display_RX_Gain();
	   }
	 else
	   {
	   	  gain_F=1;
	   	  Display_TX_Gain();
	   }
}
	

void AddGain(void)
{
	 if(gain_F)
	   {
	   	  if(tx_gain>=31)
	   	    tx_gain=0;
	   	  else
	   	    tx_gain++;
	    	  Display_TX_Gain();   	
	   }
	 else
	   {
	   	  if(rx_gain>=31)
	   	    rx_gain=0;
	   	  else
	   	    rx_gain++;
	    	  Display_RX_Gain();   		    	
	   }
	 Write_PCF8575();	
}
	

void DecGain(void)
{
	 if(gain_F)
	   {
	   	  if(tx_gain==0)
	   	    tx_gain=31;
	   	  else
	   	    tx_gain--;
	    	  Display_TX_Gain();   	
	   }
	 else
	   {
	   	  if(rx_gain==0)
	   	    rx_gain=31;
	   	  else
	   	    rx_gain--;
	    	  Display_RX_Gain();   		    	
	   }
	 Write_PCF8575();
}


void ChannelCheck(void)                //屏蔽检测
{
   DisableInt1;
   ClearTimer1();
   sofakey_count=0;
   sokey_count=0;
   fakey_count=0;
   SY0_S0_T0_R0;                       //输出0;
   delay(8);                           //delay 8 us
   PORTD += pingbicount;

   if((pingbicount==0)||(pingbicount==1)||(pingbicount==6))
     {
        disbuf[0]=BCDSEG_TAB[12];      //display C
     }
   else
     {
        disbuf[0]=BCDSEG_TAB[14];      //display E
     }
   disbuf[1]=NoDisplay;
   disbuf[2]=NoDisplay;
   disbuf[3]=(pingbicount&0x04)?BCDSEG_TAB[1]:BCDSEG_TAB[0];
   disbuf[4]=(pingbicount&0x02)?BCDSEG_TAB[1]:BCDSEG_TAB[0];
   disbuf[5]=BCDSEG_TAB[pingbicount&0x01];
   disbcd(disbuf);
   if(pingbicount>=7)
      pingbicount=0;
   else
      pingbicount++;
}        	


void ShouFa(void)                      //收发
{
   sokey_count=0;
   fakey_count=0;
   sofakey_count++;
   if(sofakey_count==1)
     {
       SY0_S0_T0_R0;                   //PORTD =  输出0;
       delay(5);                       //delay 5us
       SY1_S1_T1_R0;                   //发;
//     delay(400);                     //delay 400 us
     }
   disbuf[0]=BCDSEG_TAB[5];            //so--fa
   disbuf[1]=BCDSEG_TAB[0];
   disbuf[2]=BCDSEG_TAB[20];
   disbuf[3]=BCDSEG_TAB[20];
   disbuf[4]=BCDSEG_TAB[15];
   disbuf[5]=BCDSEG_TAB[10];
   disbcd(disbuf);
   EnableInt1;
}


void Shou(void)                        //只收不发
{
   DisableInt1;
   ClearTimer1();
   sofakey_count=0;
   fakey_count=0;
   sokey_count++;
   if(sokey_count==1)
     {
       SY0_S0_T0_R0;                   //输出0;
       delay(5);                       //delay  us
       SY0_S0_T0_R1;                   //收;
     }
   disbuf[0]=BCDSEG_TAB[12];           //ch--so
   disbuf[1]=BCDSEG_TAB[17];
   disbuf[2]=BCDSEG_TAB[20];
   disbuf[3]=BCDSEG_TAB[20];
   disbuf[4]=BCDSEG_TAB[5];
   disbuf[5]=BCDSEG_TAB[0];
   disbcd(disbuf);
}

void Fa(void)                          //只发不收
{
   DisableInt1;
   ClearTimer1();
   sofakey_count=0;
   sokey_count=0;
   fakey_count++;
   if(fakey_count==1)
     {
       SY0_S0_T0_R0;                   //输出0;
       delay(5);                       //delay  us
       SY1_S1_T1_R0;                   //发;
     }
   disbuf[0]=BCDSEG_TAB[12];           //display ch--fa
   disbuf[1]=BCDSEG_TAB[17];
   disbuf[2]=BCDSEG_TAB[28];
   disbuf[3]=BCDSEG_TAB[28];
   disbuf[4]=BCDSEG_TAB[15];
   disbuf[5]=BCDSEG_TAB[10];
   disbcd(disbuf);
}


void CheckOPD(void)
{
   CLR_PD_CNT;
   SET_PD_CNT;
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   CLR_PD_CNT;
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();

  SPDR=0x00;
  while((SPSR  BIT7)==0x00);
  OPD2=SPDR;
  SPDR=0X00;
  while((SPSR  BIT7)==0x00);
  OPD1=SPDR;

//根据公式计算OPD
//显示    	
}


void CheckVSWR(void)
{
   CLR_PD_CNT;
   SET_PD_CNT;
   __no_operation();
   CLR_PD_CNT;     	
   __no_operation();
   SET_PD_CNT;
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   CLR_PD_CNT;
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();
   __no_operation();

  SPDR=0x00;
  while((SPSR  BIT7)==0x00);
  VSWR2=SPDR;
  SPDR=0X00;
  while((SPSR  BIT7)==0x00);
  VSWR1=SPDR;

//根据公式计算VSWR
//显示
}