1、1、流水燈12、AD轉(zhuǎn)換+數(shù)碼管顯示23、對EEPROM進行讀寫操作84、定時器0（輪循方式）95、定時器0中中斷106、定時器1測試程序127、定時器1測試程序之二148、串口通信（USART0）159、串口通信（USART1）1710、ATMEGA128 SPI驅(qū)動2011、PWM波形輸出2112、定時器1數(shù)碼管顯示（1s）2213、定時器1：定時計數(shù)（1s）2714、外部中斷0-33215、定時器3 pwm輸出3416、定時器0，快速PWM模式3517、定時器0，相位修正（調(diào)整）模式3618、定時器1pwm波形輸出3819、定時器3，OCRB3輸出PWM波形，占空比可調(diào)391、流水燈/*

2、硬件環(huán)境：atmega128開發(fā)板軟件環(huán)境：CodeVisionAVR-C*/#include #define uchar unsigned char#define uint unsigned intuchar cnt;void timer1_init() TCCR1B=0X00; /先停止定時器1 TCNT1H=0XF0; /設(shè)定定時器初值 TCNT1L=0XBE; TCCR1A=0X00; /啟動定時器1 TCCR1B=0X05; /使用1024分頻interrupt TIM1_OVF void timer1_ovf_isr(void) TCNT1H=0XF0; /重載定時器初值 TCNT

3、1L=0XBE; DDRE|=12; PORTE|=12; DDRA=0xff; PORTA=cnt; /輸出led的值到端口B cnt+; if(cnt=255) cnt=0;void main() /DDRB=0XFF; SREG|=0X80; TIMSK=0X04; timer1_init(); while(1) ; 2、AD轉(zhuǎn)換+數(shù)碼管顯示/*/*ADC測試程序 */*目標器件：ATmega128 */*晶振:RC 8MHZ */*編譯環(huán)境：ICCAVR 7.13A */*E-Mail:number007cool */*時間：2010年11月13日 */Aref接AVCC(+5V),采

4、用Aref作參考電壓/*用數(shù)碼管顯示AD轉(zhuǎn)換的結(jié)果*/*/*包含頭文件*/#include #include /*數(shù)碼管段碼表*/extern const unsigned char tab=0x3f,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07, 0x7F,0x6F;/*全局變量*/unsigned int adc_rel=0;/*函數(shù)功能:ADC初始化函數(shù)入口參數(shù):出口參數(shù):*/void adc_init(void)DDRF&=0XFE; /PORTF0設(shè)置為輸入，即作為ADC0口輸入模擬電壓PORTF&=0XFE; /PORTF0設(shè)置為輸入低電平ADCSRA=0x

5、00; /關(guān)ADCADMUX = 0X00; /采用Aref作為參考電壓，ADC0單端輸入，右對齊ACSR=(1ACD);ADCSRA = (1ADEN)|(1ADSC)|(1ADATE)|(1ADIE)|(1ADPS2)|(1ADPS1);/ADEN，啟動ADC;ADSC,ADC開始轉(zhuǎn)換；ADIE,ADC中斷使能；ADPSx,設(shè)置分頻因子64/*函數(shù)功能:ADC中斷函數(shù)入口參數(shù):出口參數(shù):*/#pragma interrupt_handler adc_isr:iv_ADCvoid adc_isr(void) /int data_h,data_l; /data_l=ADCL; /data_h=

6、ADCH; ADCSRA = 0x00; ADCSRA = (1ADEN)|(1ADSC)|(10x1ff) PORTA|=12; else PORTA&=(12); */*函數(shù)功能:延時子程序入口參數(shù):出口參數(shù):*/void delay(void) int i; for(i=0;i1800;i+);/*函數(shù)功能:顯示子程序入口參數(shù):k出口參數(shù):*/void display(unsigned int k)/發(fā)光二極管顯示初始化 DDRE|=12;PORTE|=12;DDRA=0XFF;PORTA=k;#define SS 0#define SCK 1#define MOSI 2#define

7、MISO 3#define SS_H() PORTB|=(1SS)#define SS_L() PORTB&=(1SS)#define led0_en()DDRB|=14;PORTB|=(14); /開第一個數(shù)碼管的位選#define led0_dis()DDRB|=14;PORTB&=(14); /關(guān)第一個數(shù)碼管的位選#define led1_en()DDRB|=15;PORTB|=(15);#define led1_dis()DDRB|=15;PORTB&=(15);#define led2_en()DDRB|=16;PORTB|=(16);#define led2_dis()DDRB|=

8、16;PORTB&=(16);#define led3_en()DDRB|=17;PORTB|=(17);#define led3_dis()DDRB|=17;PORTB&=(17);#define OE 7#define point 3#define dp 7#include #include const unsigned char table=0x3F,0x06,0x5B,0x4F,0x66, /0,1,2,3,4 0x6D,0x7D,0x07,0x7F,0x6F, /5,6,7,8,9 0x77,0x7C,0x39,0x5E,0x79,0x71,0x00; /a,b,c,d,e,fvol

9、atile unsigned char led_buffer4;void delay_1us(void) /1us延時函數(shù) asm(nop); void delay_nus(unsigned int n) /N us延時函數(shù) unsigned int i=0; for (i=0;in;i+) delay_1us(); void delay_1ms(void) /1ms延時函數(shù) unsigned int i; for (i=0;i1140;i+); void delay_nms(unsigned int n) /N ms延時函數(shù) unsigned int i=0; for (i=0;in;i+)

10、 delay_1ms(); /*完成spi的初始化*/void spi_init(void) DDRB |= (1MOSI)|(1SCK)|(1SS);/設(shè)置MOSI，SCK輸出 SPCR = (1SPE)|(1MSTR)|(1SPR0)|(1SPR1);/使能SPI，主機模式/*spi主機傳送數(shù)據(jù)*/void SPI_MasterTransmit(char Data) /* 啟動數(shù)據(jù)傳輸 */ SPDR = Data; /* 等待傳輸結(jié)束 */ while(!(SPSR & (1SPIF) ;/*完成對HC595的初始化*/void HC_595_init(void)DDRC |= (1OE

11、); /設(shè)置PORTC7為輸出PORTC &= (1OE); /輸出高電平，使能595PORTB = 0x0F; /同時打開四個數(shù)碼管的位選spi_init();led_buffer0=16; /初始化數(shù)碼管段碼led_buffer1=16;led_buffer2=16;led_buffer3=16;/*HC595完成傳送數(shù)據(jù)*/void HC_595_OUT(unsigned char data) SS_L(); SPI_MasterTransmit(data); SS_H();void leddis_update(void) /*最低位數(shù)碼管，第四個數(shù)碼管*/ if(point=0) HC

12、_595_OUT(tableled_buffer3|(1dp); else HC_595_OUT(tableled_buffer3); led0_en(); delay_nus(60); led0_dis(); if(point=1) HC_595_OUT(tableled_buffer2|(1dp); else HC_595_OUT(tableled_buffer2); led1_en(); delay_nus(60); led1_dis(); if(point=2) HC_595_OUT(tableled_buffer1|(1dp); else HC_595_OUT(tableled_bu

13、ffer1); led2_en(); delay_nus(60); led2_dis(); /*最高位數(shù)碼管，第一個數(shù)碼管*/ if(point=3) HC_595_OUT(tableled_buffer0|(19999) HC_595_OUT(0xFF);/當計數(shù)大于9999時，四個數(shù)碼管同時輸出8 PORTB|=(14)|(15)|(16)|(1999) led_buffer0=data/1000; led_buffer1=(data%1000)/100; led_buffer2=(data%100)/10; led_buffer3=data%10; leddis_update();els

14、e if(data99) led_buffer0=data/1000; /關(guān)閉最高位的那個數(shù)碼管 led_buffer1=(data%1000)/100; led_buffer2=(data%100)/10; led_buffer3=data%10; leddis_update(); else if(data9) led_buffer0=data/1000; led_buffer1=16; led_buffer2=(data%100)/10; led_buffer3=data%10; leddis_update();else led_buffer0=data/1000; led_buffer1

15、=16; led_buffer2=16; led_buffer3=data%10; leddis_update();volatile unsigned int countnum=0; void timer1_init(void)TCCR1B = 0x00; /stopTCNT1H = 0x8F; /setupTCNT1L = 0x81;OCR1AH = 0x70;OCR1AL = 0x7F;OCR1BH = 0x70;OCR1BL = 0x7F;OCR1CH = 0x70;OCR1CL = 0x7F;ICR1H = 0x70;ICR1L = 0x7F;TCCR1A = 0x00;TCCR1B

16、= 0x04; /start Timer#pragma interrupt_handler timer1_ovf_isr:15void timer1_ovf_isr(void)TCNT1H = 0x8F; /reload counter high valueTCNT1L = 0x81; /reload counter low valuecountnum+;if(countnum9999) countnum=0;void init_devices(void)CLI(); /disable all interruptstimer1_init();TIMSK = 0x04; /timer inter

17、rupt sourcesSEI(); /re-enable interrupts/*函數(shù)功能:主程序入口參數(shù):出口參數(shù):*/void main(void) init_devices(); HC_595_init(); adc_init(); SEI();/開全局中斷變量 display(0); while(1) delay(); display_led(adc_rel/1024.0*5*1000); 3、對EEPROM進行讀寫操作/*文件：main.c用途：注意：內(nèi)部8M晶振*/#include config.h/*向EEPROM里面寫入數(shù)據(jù)輸入量：地址，數(shù)據(jù)*/void EEPROM_wri

18、te(unsigned int uiAddress,unsigned char ucData)while(EECR&(1EEWE); /等待上一次寫操作結(jié)束EEAR = uiAddress; /地址EEDR = ucData; /數(shù)據(jù)EECR |=(1EEMWE); /置位EEMWE,主機寫使能EECR |=(1EEWE); /置位EEWE,寫使能，啟動寫操作/*從EEPROM指定的地址里面讀出相應(yīng)的數(shù)據(jù)*/unsigned char EEPROM_read(unsigned int uiAddress)while(EECR&(1EEWE); /等待上一次寫操作結(jié)束EEAR = uiAddre

19、ss; /設(shè)置地址寄存器EECR |=(1EERE); /讀使能return EEDR; /返回讀入EEDR里面的數(shù)據(jù)void main(void)unsigned char temp=123;unsigned char data;HC_595_init();EEPROM_write(0x01,temp);data=EEPROM_read(0x01);while(1) Seg7_Led_display(data); /調(diào)用顯示函數(shù)將寫入的數(shù)據(jù)又讀出來文件:eeprom12.rar大小:40KB下載:下載4、定時器0（輪循方式）/*定時器0和2（均為八位的定時計數(shù)器）有四種工作模式，此例是工作在

20、普通模式。在此模式下，計數(shù)器不斷的累加，當計數(shù)到最大值0xff后返回到0x00重新開始，在TCNT0為0 的同時，T/C溢出標志TOV0置位*/使用輪循方式，當TIFR溢出時，uc_led加1，輸出到led時期發(fā)光/TIFR中斷標志寄存器#include #define uchar unsigned charuchar uc_led,k;void main()/設(shè)置數(shù)碼管輸出高電平DDRE|=12; PORTE|=12;DDRA=0XFF;PORTF=0XFF;TCNT0=0X00;/設(shè)定定時計數(shù)器的初值為0TCCR0=0X05;/使用1024分頻（共有7種時鐘）uc_led=0;k=0;wh

21、ile(1) while(!(TIFR&0X01);/循環(huán)檢測TIFR中的溢出標志是否有效 /PORTA=uc_led; uc_led+; if(uc_led=255) uc_led=0; k+;if(k=255) k=0; PORTA=k;TIFR|=0X01; /寫1到TIFR的TOV0位清除溢出標志為TOV05、定時器0中中斷/*/*定時器T0測試程序 */*目標器件：ATmega128 */*晶振:RC 8MHZ */*編譯環(huán)境：ICCAVR 7.13 */*E-Mail:number007cool */*時間：2010年3月14日 */*TCCRn定時計數(shù)器控制寄存器 TCNTn計數(shù)

22、器，不斷的計數(shù) TIMSK定時計數(shù)器中斷屏蔽寄存器 TIFR中斷標志寄存器*/*/*包含頭文件*/#include #include /*全局變量*/int k;/*函數(shù)功能:端口初始化程序入口參數(shù):出口參數(shù):*/void port_init (void) DDRE|=12; PORTE|=1150) k=0; PORTA = 0x01; /*函數(shù)功能:主程序入口參數(shù):出口參數(shù):*/void main (void) CLI(); /disable all interrupts port_init(); timer0_init(); MCUCR = 0x00; TIMSK = 0x01; /T0

23、溢出使能 SEI(); /enable interrupts 6、定時器1測試程序/*/*定時器T1測試程序 */*/*包含頭文件*/#include #include /*全局變量*/int k;/*函數(shù)功能:端口初始化程序入口參數(shù):出口參數(shù):*/void port_init (void) DDRE|=12; PORTE|=140) k=0; PORTA = 0x01; /*函數(shù)功能:主程序入口參數(shù):出口參數(shù):*/void main (void) CLI(); /disable all interrupts port_init(); timer1_init(); MCUCR = 0x00;

24、TIMSK = 0x04; /T0溢出使能 SEI(); /enable interrupts 7、定時器1測試程序之二/*/*定時器T1測試程序 */*定時時間為1秒 */*/*包含頭文件*/#include #include /*全局變量*/int countnum;/*函數(shù)功能:端口初始化程序入口參數(shù):出口參數(shù):*/void port_init (void) DDRE|=12; PORTE|=12; DDRA=0XFF; PORTA=0X00;/*函數(shù)功能:定時器初始化程序入口參數(shù):出口參數(shù):*/void timer1_init(void)TCCR1B = 0x00; /stopTCNT

25、1H = 0x8F; /setupTCNT1L = 0x81;OCR1AH = 0x70;OCR1AL = 0x7F;OCR1BH = 0x70;OCR1BL = 0x7F;OCR1CH = 0x70;OCR1CL = 0x7F;ICR1H = 0x70;ICR1L = 0x7F;TCCR1A = 0x00;TCCR1B = 0x04; /start Timer/*函數(shù)功能:定時中斷服務(wù)程序入口參數(shù):出口參數(shù):*/#pragma interrupt_handler timer1_ovf_isr:15void timer1_ovf_isr(void)TCNT1H = 0x8F; /reload

26、counter high valueTCNT1L = 0x81; /reload counter low valuecountnum+;if(countnum=256) countnum=0;/*函數(shù)功能:主程序入口參數(shù):出口參數(shù):*/void main (void) CLI(); /disable all interrupts port_init(); timer1_init(); TIMSK = 0x04; /T0溢出使能 SEI(); /enable interrupts while(1) PORTA=countnum; 8、串口通信（USART0）/*/*串口0測試程序 */*目標器件

27、：ATmega128 */*晶振:RC 8MHZ */*編譯環(huán)境：ICCAVR 7.13A */*時間：2010年3月14日*/*E-Mail:number007cool */*/*包含頭文件*/#include#include/*宏定義*/#define fosc 8000000 /晶振8MHZ#define baud 2400/波特率/*函數(shù)功能:uart0初始化程序入口參數(shù):出口參數(shù):*/void uart0_init(void)UCSR0B = 0x00; /關(guān)閉UART00UCSR0A = 0x00; /不使用倍速發(fā)送（異步）UCSR0C =(1UCSZ01)|(1UCSZ00); /數(shù)據(jù)位為8位UBRR0L=(fosc/16/(baud+1)%256; /異步正常情況下的計算公式UBRR0H=(fosc/16/(baud+1)/256;UCSR0B =(1RXEN0)|(1TXEN0); /接收使能和發(fā)送使能/*函數(shù)功能:uart0發(fā)送單字節(jié)數(shù)據(jù)入口參數(shù):c出口參數(shù):*/void putchar0(unsigned char c) while (!(UCSR