AVR单片机 mega128 例程大全

//16超声波LED显示

#include //PA0接控制引脚PA7接接收引脚#include

#define chao 100

longint time=0;

void delay(long int z)

{

inti,j;

for(i=0;i

for(j=0;j<100;j++);

}

void main()

{

int o=0;

DDRD=0xff;

DDRA=0x0f;

TCNT1H=0x00;

TCNT1L=0x00;

while(1)

{

PORTA=0x0f;

delay(1);

PORTA=0x00;

while((PINA&0x80)==0x00); TCCR1B=0x03;

while((PINA&0x80)==0x80); TCCR1B=0x00;

time=TCNT1H*256+TCNT1L; TCNT1H=0x00;

TCNT1L=0x00;

if(time

{

if(time

{

o=500;

while(o--)

PORTD=0x04;

}

}

if(time>chao)

{

if(time>chao)

{

o=500;

while(o--)

PORTD=0x08;

}

}

}

}

//AD

#include

#include

#define unint unsigned int

#define unchar unsigned char

#pragma data:code

const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,

0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

unint mega128_ad()

{

unintaddata;

DDRF&=~BIT(0);

PORTF&=~BIT(0);

ADMUX=0;

ADCSRA=0X80;

ADCSRA|=BIT(ADSC);

while(!(ADCSRA&(BIT(ADIF))));

addata=ADCL;

addata=addata+ADCH*256;

returnaddata;

}

void show(count)

{

unchar temp1,temp2,temp3,temp4;

temp1=count/1000;

temp2=(count%1000)/100;

temp3=(count%100)/10;

temp4=count%10;

HC_595_OUT(table[temp4]);

DDRB|=(1<<4);

PORTB|=(1<<4);

delay(10);

DDRB|=(1<<4);

PORTB&=~(1<<4);

HC_595_OUT(table[temp3]);

DDRB|=(1<<5);

PORTB|=(1<<5);

delay(10);

DDRB|=(1<<5);

PORTB&=~(1<<5);

HC_595_OUT(table[temp2]);

DDRB|=(1<<6);

PORTB|=(1<<6);

delay(10);

DDRB|=(1<<6);

PORTB&=~(1<<6);

HC_595_OUT(table[temp1]);

DDRB|=(1<<7);

PORTB|=(1<<7);

delay(10);

DDRB|=(1<<7);

PORTB&=~(1<<7);

}

void HC_595_OUT(count)

{

PORTB&=~(1<<0);

SPDR =count ;

while(!(SPSR & (1<

delay(10);

PORTB|=(1<<0);

}

void delay(z)

{

unintx,y;

for(x=0;x

for(y=0;y<200;y++);

}

void main()

{

unintcount,chl;

DDRC |= (1<<7);

PORTC &= (1<<7);

PORTB = 0x0F;

DDRB |= (1<<2)|(1<<1)|(1<<0);

SPCR = (1<

while(1)

{

count=mega128_ad();//用参数代替老是出问题，这一点需要再次认知考虑

/*for(i=0;i<4;i++)

{

ad[3-i]=shuzhi%10;

shuzhi=shuzhi/10;

}*/

show(count);

}

}

//ADC

#include

#include

#define unint unsigned int

#define unchar unsigned char

#pragma data:code

const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,

0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

unint mega128_ad()

{

unintaddata;

DDRF&=~BIT(0);

PORTF&=~BIT(0);

ADMUX=0;

ADCSRA=0X80;

ADCSRA|=BIT(ADSC);

while(!(ADCSRA&(BIT(ADIF)))); addata=ADCL;

addata=addata+ADCH*256; returnaddata;

}

void show(count)

{

unchar temp1,temp2,temp3,temp4;

temp1=count/1000;

temp2=(count%1000)/100;

temp3=(count%100)/10;

temp4=count%10;

HC_595_OUT(table[temp4]);

DDRB|=(1<<4);

PORTB|=(1<<4);

delay(10);

DDRB|=(1<<4);

PORTB&=~(1<<4);

HC_595_OUT(table[temp3]);

DDRB|=(1<<5);

PORTB|=(1<<5);

delay(10);

DDRB|=(1<<5);

PORTB&=~(1<<5);

HC_595_OUT(table[temp2]);

DDRB|=(1<<6);

PORTB|=(1<<6);

delay(10);

DDRB|=(1<<6);

PORTB&=~(1<<6);

HC_595_OUT(table[temp1]);

DDRB|=(1<<7);

PORTB|=(1<<7); delay(10);

DDRB|=(1<<7);

PORTB&=~(1<<7);

}

void HC_595_OUT(count) {

PORTB&=~(1<<0);

SPDR =count ;

while(!(SPSR & (1<

delay(10);

PORTB|=(1<<0);

}

void delay(z)

{

unintx,y;

for(x=0;x

for(y=0;y<200;y++);

}

void main()

unintcount,chl;

DDRC |= (1<<7);

PORTC &= (1<<7);

PORTB = 0x0F;

DDRB |= (1<<2)|(1<<1)|(1<<0);

SPCR = (1<

while(1)

{

count=mega128_ad();//用参数代替老是出问题，这一点需要再次认知考虑

/*for(i=0;i<4;i++)

{

ad[3-i]=shuzhi%10;

shuzhi=shuzhi/10;

}*/

show(count);

}

}

//CTC

//该程序并未在示波器上测试，在仿真软件上仿真时只有PB5上有方波信号出现

#include

#include

#define uchar unsigned char

#define uint unsigned int

void main()

{

DDRB|=0X60;

TCCR1A=0X50;

TCCR1B=0X09;

OCR1A=0X7CF;

}

//D口矩阵键盘检测

#include "config.h"

#include

#include

#define unint unsigned int

#define unchar unsigned char

const unsigned char Seg7_Data[]={0x3F,0x06,0x5B,0x4F,0x66,

0x6D,0x7D,0x07,0x7F,0x6F,

0x77,0x7C,0x39,0x5E,0x79,0x71,0x00};

unchar temp1,temp2,temp3,temp4;

unintdata,z;

void HC_595_init()

{

DDRC=0x80;

PORTC=0x00;

PORTB=0x0F;

DDRB=0x07;

SPCR =0x53;

}

void Seg7_Led_display(unint data) {

unchar temp1,temp2,temp3,temp4;

temp1=data/1000;

temp2=(data%1000)/100;

temp3=(data%100)/10;

temp4=data%10;

HC_595_OUT(Seg7_Data[temp4]);

PORTB|=(1<<4);

delay(20);

PORTB&=~(1<<4);

HC_595_OUT(Seg7_Data[temp3]);

PORTB|=(1<<5);

delay(20);

PORTB&=~(1<<5);

HC_595_OUT(Seg7_Data[temp2]); PORTB|=(1<<6);

delay(20);

PORTB&=~(1<<6);

HC_595_OUT(Seg7_Data[temp1]);

PORTB|=(1<<7);

delay(20);

PORTB&=~(1<<7);

}

void HC_595_OUT(unchar data)

{

PORTB=0x06;

SPDR =data ;

while(SPSR==0);

delay(10);

PORTB=0x01;

}

void delay(unint z)

{

uninti,j;

for(i=0;i

for(j=0;j<100;j++);

}

void delay_1us(void) //1us延时函

{

asm("nop");

}

void delay_nus(unsigned int n) //N us延时函数{

unsignedint i=0;

for (i=0;i

delay_1us();

}

void delay_1ms(void) //1ms延时函数

{

unsignedint i;

for (i=0;i<1140;i++);

}

void delay_nms(unsigned int n) //N ms延时函数

{

unsignedint i=0;

for (i=0;i

delay_1ms();

voidBuzz_init(void)

{

DDRG |= (1<<4);

PORTG &=~ (1<<4);

}

void Beep(unsigned intH_time,unsignedintL_time) {

PORTG |= (1<<4);

delay_nms(H_time);

PORTG &=~ (1<<4);

delay_nms(L_time);

}

intkey_press(void)

{int k;

delay_nms(5);

PORTD=0x01;

delay_nms(5);

if((PIND&0xF0)!=0x00)

{

delay_nms(10);

if((PIND&0xF0)!=0x00)

{

if(PIND==0x11) {

Beep(100,50); PORTA=0x1F;

k=1;

}

else if(PIND==0x21) {

Beep(100,50); PORTA=0xFD;

k=2;

}

else if(PIND==0x41) {

Beep(100,50); PORTA=0xFB;

k=3;

}

else if(PIND==0x81) {

Beep(100,50);

PORTA=0xF7;

k=4;

}

else {;}

} else {;}

} else {;}

//第二行

delay_nms(5);

PORTD=0x02;

delay_nms(5);

if((PIND&0xF0)!=0x00)

{

delay_nms(10);

if((PIND&0xF0)!=0x00)

{

if(PIND==0x12)

{

Beep(100,50);

PORTA=0x1F;

k=5;

}