AD數(shù)模轉(zhuǎn)換-CVAVR程序代碼

#include

#include

//AlphanumericLCDModulefunctions

#asm

.equ__lcd_port=0x18;PORTB

#endasm

#include

intshi,ge,qian,bai,m;

intadc_v;

//Timer0outputcompareinterruptserviceroutine

interrupt[TIM0_COMP]voidtimer0_comp_isr(void)

{

//Placeyourcodehere

m++;

}

#include

#defineADC_VREF_TYPE0x00

//ADCinterruptserviceroutine

interrupt[ADC_INT]voidadc_isr(void)

{

unsignedintadc_data;

//ReadtheADconversionresult

adc_data=ADCW;

adc_v=(unsignedlong)adc_data*5000/1024.0;

//Placeyourcodehere

}

//Declareyourglobalvariableshere

voidmain(void)

{

//Declareyourlocalvariableshere

//Input/OutputPortsinitialization

//PortAinitialization

//Func7=InFunc6=InFunc5=InFunc4=InFunc3=InFunc2=InFunc1=InFunc0=In

//State7=TState6=TState5=TState4=TState3=TState2=TState1=TState0=T

PORTA=0x0f;

DDRA=0x0f;

//PortBinitialization

//Func7=InFunc6=InFunc5=InFunc4=InFunc3=InFunc2=InFunc1=InFunc0=In

//State7=TState6=TState5=TState4=TState3=TState2=TState1=TState0=T

PORTB=0x00;

DDRB=0x00;

//PortCinitialization

//Func7=InFunc6=InFunc5=InFunc4=InFunc3=InFunc2=InFunc1=InFunc0=In

//State7=TState6=TState5=TState4=TState3=TState2=TState1=TState0=T

PORTC=0x00;

DDRC=0x00;

//PortDinitialization

//Func7=InFunc6=InFunc5=InFunc4=InFunc3=InFunc2=InFunc1=InFunc0=In

//State7=TState6=TState5=TState4=TState3=TState2=TState1=TState0=T

PORTD=0x00;

DDRD=0x00;

//Timer/Counter0initialization

//Clocksource:SystemClock

//Clockvalue:62.500kHz

//Mode:CTCtop=OCR0

//OC0output:Disconnected

TCCR0=0x0B;

TCNT0=0x00;

OCR0=0xFF;

TCCR1A=0x00;

TCCR1B=0x00;

TCNT1H=0x00;

TCNT1L=0x00;

ICR1H=0x00;

ICR1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

//Timer/Counter2initialization

//Clocksource:SystemClock

//Clockvalue:Timer2Stopped

//Mode:Normaltop=FFh

//OC2output:Disconnected

ASSR=0x00;

TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

//ExternalInterrupt(s)initialization

//INT0:Off

//INT1:Off

//INT2:Off

MCUCR=0x00;

MCUCSR=0x00;

//Timer(s)/Counter(s)Interrupt(s)initialization

TIMSK=0x02;

//AnalogComparatorinitialization

//AnalogComparator:Off

//AnalogComparatorInputCapturebyTimer/Counter1:Off

ACSR=0x80;

SFIOR&=0x1F;

SFIOR|=0x60;

//ADCinitialization

//ADCClockfrequency:1000.000kHz

//ADCVoltageReference:AREFpin

//ADCAutoTriggerSource:FreeRunning

ADMUX=0x47;

ADCSRA=0xAD;

//LCDmoduleinitialization

lcd_init(16);

//Globalenableinterrupts

#asm("sei")

while(1)

{lcd_clear();

qian=adc_v/1000;

bai=adc_v00/100;

shi=adc_v000/10;

ge=adc_v000;

lcd_gotoxy(0,0);

lcd_putchar(qian+48);

lcd_putchar(bai+48);

lcd_putchar(shi+48);

lcd_putchar(ge+48);

delay_ms(100);

//Placeyourcodehere

};

}