原创 简易电压源

/*****************************************************
This program was produced by the
CodeWizardAVR V1.24.8c Professional
Automatic Program Generator
?Copyright 1998-2006 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project : 简易直流电压源
Version :
Date    : 2007-5-18
Author  : F4CG                           
Company : F4CG                           
Comments:

Chip type           : ATmega16L
Program type        : Application
Clock frequency     : 8.000000 MHz
Memory model        : Small
External SRAM size  : 0
Data Stack size     : 256
*****************************************************/

#include <mega16.h>
#include <delay.h>
#include "1602a.h"
#define ADC_VREF_TYPE 0xc7//内部基准电源，单通道输入PA7
unsigned int adc_v; 

int key_stime_ok,key_stime_counter;
void adc_to_disbuffer(unsigned int adc)
{
 // #asm("cli")
  
 //  LcdPos(6,0); //确定光标位置
  // LcdWd(adc%10+0x30);
   adc="adc/10";
   LcdPos(5,0); //确定光标位置
   LcdWd(adc%10+0x30);
   adc/=10;
     LcdPos(4,0); //确定光标位置
   LcdWd(adc%10+0x30);
   adc/=10; 
    LcdPos(3,0); //确定光标位置
   LcdWd('.');
     LcdPos(2,0); //确定光标位置
   LcdWd(adc%10+0x30);
   adc/=10;
//#asm("sei")
}   
interrupt [TIM0_COMP] void timer0_comp_isr(void)
{
// Place your code here   

if (++key_stime_counter >=1)
  { 
  key_stime_ok = 1; 
                  }
}
// ADC interrupt service routine
interrupt [ADC_INT] void adc_isr(void)
{
  unsigned int adc_data;
// Read the AD conversion result
adc_data=ADCW;

// Place your code here
adc_v=(unsigned long)adc_data*2560/1024;    //换算成电压值
  adc_to_disbuffer(adc_v);  
   
}

// Declare your global variables here

void main(void)
{
// Declare your local variables here
//char j="88";
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;

// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0xff;//液晶接口
DDRB=0xff;

// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0xff;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0xff;     
DDRD=0xff;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top="FFh"
// OC0 output: Disconnected
TCCR0=0x0C;//采用比较模式，256分频   8M/256=31.25K
//TCCR0=0X0D;//1024   7.81k
TCNT0=0x00;
OCR0=0x40;// (61+1)/31.25   =2ms
 // OCR0=0XFF;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top="FFFFh"
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top="FFh"
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x02;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;

// ADC initialization
// ADC Clock frequency: 125.000 kHz
// ADC Voltage Reference: Int., cap. on AREF
// ADC Auto Trigger Source: Timer0 Compare Match
ADMUX=ADC_VREF_TYPE;
ADCSRA=0xAE;
SFIOR&=0x1F;
SFIOR|=0x60;

// Global enable interrupts

RstLcd();//液晶初始化
RstLcd();//液晶初始化
RstLcd();//液晶初始化
/*
LcdPos(0,0);//x,y
LcdWd(j%10+0x30);  
LcdPos(1,0);//x,y
j=j/10;
LcdWd(j%10+0x30);
//j=j/10 ;
LcdPos(2,0);//x,y
LcdWd('=');
LcdPos(3,0);
//Write_String(str);
lcd_putsf("JIANGLONGJIAN");
//LcdWd('b');*/
  LcdPos(0,0); //确定光标位置
  LcdWd('v');
  LcdPos(1,0); //确定光标位置
  LcdWd('=');
  #asm("sei")
while (1)
      {
      // Place your code here
   //   if (key_stime_ok==1)
    // { key_stime_ok=0;
     //  adc_to_disbuffer(adc_v);
      // } 
 
      };
}