项目-avr程序实例megac1.参考书P121数码管轮流显示

1.P121#include<mega16.h>#include<delay.h>flashunsignedcharled_7[16]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,flashunsignedcharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};voidmain(void){unsignedchar {{{}}}#includeflashunsignedcharflashunsignedcharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsignedchardisbuff[8];//显示缓冲区，存放要显示的8个字符的段码值unsignedcharposit,time_counter;bitvoid 6位LED{PORTC=PORTA=led_7[disbuff[posit]];PORTC=position[posit];if(++posit>=8)posit=}Timer0interrupt P] { LEDif{time_counter=time_500ms_ok=}}void{unsignedchar I/O//T/C0 //OCR0=0x7C(124),(124+1)/62.5=2ms（2ms中断一次，电平方向变化一次） //允许T/C0比较匹配中断posit=0; while{{if(++new>=16)new=0;}}}8，逐段、#include#includeflashunsignedcharled_7[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};flashunsignedcharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};voidmain(void){unsignedchar {{{}}}#include<mega16.h>flashunsignedcharposition[2]={0xfe,0xfd};unsignedchar //unsignedchar //6int //unsignedcharposit; void 6LED{PORTC=PORTA=led_7[dis_buff[posit]];PORTC=position[posit];if(++posit>=2)posit=}Timer0interrupt P] { //调用LEDif{time_counter=time_1s_ok=}}void //{dis_buff[0]=time%10;dis_buff[1]=time/10;}void{ //I/OT/C0 //（M/64=62.5KHz，CC //= //T/C0posit= //while{if 1{time_1s_ok=iftime0)//{} //}}}数码管动态扫描0170 #include<mega16.h>#include<delay.h>flashunsignedcharflashunsignedchar void{while{unsignedintpoint=0,show=0,i=0,k=0,position2=7;unsignedintmax=8,count=50;chartime_counter=100;{{{{}}}}} #include<mega16.h>#include<delay.h>flashunsignedcharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsignedchardisbuff[8];void{unsignedchar //I/O {{{{}}}}}}}#include<mega16.h>#include<delay.h>flashunsignedcharposition[2]={0xfe,0xfd};unsignedchar //6unsignedcharvoid{unsignedchari,j;{}}void{}interrupt[EXT_INT0]void{ interrupt[EXT_INT1]void{if(num)num--;elsenum=99;}void //允许INT0、INT1中断 //INT0、INT1下降沿触发 //清除INT0、INT1中断标志位 //全局中断允许while{}}#include<mega16.h>#include<delay.h>flashunsignedcharposition[2]={0xfe,0xfd};unsignedchar //6unsignedcharvoid 6LED{PORTC=PORTA=led_7[dis_buff[posit]];PORTC=position[posit];if(++posit>=2)posit=Timer0interrupt{P]//调用LED}void{}interrupt[EXT_INT0]void{}interrupt[EXT_INT1]void{if(num)num--;elsenum=99;}void //允许INT0、INT1中断 //INT0、INT1下降沿触发 //清除INT0、INT1中断标志位T/C0 //（M/64=62.5KHz，CC //= //T/C0 //while{}}#include<mega16.h>flashunsignedcharled_7[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};flashunsignedcharposition[2]={0xfe,0xfd};unsignedcharcounter,time_10ms_counter=0;unsignedchardisbuffer[2],i=0;bitvoid }interrupt P] { { }}void{ }#definekey_input7PIND.7#definekey_input6PIND.6#definekey_state_00#definekey_state_1#definekey_state_2unsignedchar{staticunsignedcharkey_state7=0;unsignedcharkey_press7,key_return7=0;{casecase {}case}return}unsignedchar{staticunsignedcharkey_state6=0;unsignedcharkey_press6,key_return6=0;{casecase{ }case}return}void while{ {{ }{ elsecounter=99;} }}#include#definerow#definespeed flashunsignedcharchar_7[row]={0x10,0x38,0x7C,0xFE,0x38,0x38,0x38,0x38,0x00,0x00,0x00,0x00};bittime_1ms_ok;unsignedchardis_buff[8];voiddisplay(void){staticunsignedcharPORTC=PORTA=PORTC=if(++i>=8)i=}interrupt P] 1ms{display();time_1ms_ok=1;}void{unsignedcharmove_speed,i,j; T/C0CTC for(i=0;i<=8;i++){dis_buff[i]=char_7[i];}j=8;while{if{time_1ms_ok=if+move_speed>= {move_speed=0; move_speed,则依次向上移动一行for(i=0;i<=6;i++){dis_buff[i]=}dis_buff[7]=char_7[j];if(++j>=row)j=0;}}}}#include<mega16.h>flashunsignedchartab[8][4]= flashunsignedcharunsignedchark=0;unsignedcharj=0,m=0;inttime_1s_counter=0;bittime_1s_ok=0;voiddisplay(unsignedcharelsem=i/8+1; }interrupt P] { { }}//Declareyourglobalvariablesherevoidmain(void) while(1){ { }}书P269使用定时器的产生特定频率，输出到蜂鸣器上产生不同的音调。使用定时器产生DOREMIFASOLA声音，每个音长1秒。(假设do256re288mi320fa341so384la426si480hz#include<mega16.h>flashunsignedintt[9]=flashunsignedchard[9]={0,105,116,132,140,157,176,198,209};#defineMax_note flashunsignedcharmusic[Max_note]=unsignedcharnote_n;unsignedintint_n;bitplay_on;//ExternalInterrupt1serviceroutineinterrupt[EXT_INT1]voidext_int1_isr(void){if{TCCR1B=}}//Timer1outputcompareAinterruptserviceroutineinterrupt[ PA]void {if{note_n=int_n=play_on=}{if(--int_n=={TCCR1B=if(note_n<{OCR1A=4*t[music[note_n]];int_n=d[music[note_n]];int_n=int_n*music[note_n];TCCR1B=}play_on=}}}//Declareyourglobalvariablesvoid{TCNT1=0x00;ICR1H=0x00;ICR1L=0x00;OCR1A=0x00;OCR1B=//Timer(s)/Counter(s)Interrupt(s)initialization//ExternalInterrupt(s)//INT0://INT1://INT1Mode:Falling//INT2:Off//Globalenableinterruptswhile{}}设计一个简单系统，有2个按键和8个LED数码管作为显示。两个按键分别代表输入字符“a”和“b”，且具备类似PC机键盘的连发功能：如按下“a”键不放，第1秒内输入1“a”，以后每隔0.2“a”……。输入的“a”在8LED#includeflashunsignedcharflashunsignedcharposition[8]=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};unsignedchardis_buff[8];//显示缓冲区，存放要显示的8个字符的段码值unsignedcharunsignedcharkey_stime_counter;bitkey_stime_ok;void 8位LED{PORTC=PORTA= PORTC=if(++posit>=8)posit= //}Timer0比较匹配中断服务，2msinterruptinterrupt P] { LEDif(++key_stime_counter key_stime_counter= key_stime_ok 10ms}#define //按键 #definekey_input6 #definekey_state_00#definekey_state_1#definekey_state_2#definekey_state_3unsignedchar{staticunsignedcharkey_state7=0,key_time=unsignedcharkey_press,key_return7=key_press 读按键I/Oswitch case if(!key_presskey_state7key_state_1 case if key_state7key_state_2;按键仍按下，状态转换到计时 key_time key_state7 case if key_state7key_state_0; key_return7 输出 elseif(++key_time key_state7 key_time key_return7 输出 case if key_state7key_state_0 if(++key_time>={{输出输出key_return7=key_time=}} return}unsignedchar{staticunsignedcharkey_state6=0,key_time=unsignedcharkey_press,key_return6=key_press 读按键I/Oswitch case if(!key_presskey_state6key_state_1 case if key_state6key_state_2按键仍按下，状态转换到计时 key_time key_state6 case if key_state6key_state_0; key_return6 输出 elseif(++key_time key_state6 key_time key_return6 输出 case if key_state6key_state_0 if(++key_time key_time key_return6 输出 return}void{ unsignedcharPORTA DDRA=PORTC=DDRC=DDRD PD7、PD6T/C0TCCR0 TCNT0=OCR0= //OCR0=TIMSK posit= while if key_stime_ok 10ms switch case case }} switch case case if(n>=8) }#include<mega16.h>flashunsignedcharflashunsignedcharposition[8]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};unsignedcharposit;unsignedchar bitunsigned void 8位LED{PORTC=PORTA=led_3[dis_buff[posit]];PORTC=position[posit];if(++posit>=8)posit=}Timer0，2msinterrupt P] { LED扫描显示if(++key_stime_counter>=5){key_stime_counter=key_stime_ok 10ms}}#definekey_input_a //按键输#definekey_input_bPIND.1 //按键输b#definekey_state_00#definekey_state_1#definekey_state_2#definekey_state_3unsignedchar{staticunsignedcharkey_state=0,key_time=0;unsignedcharkey_press,key_return=0;key_press a的I/Oswitch{case if(!key_presskey_statekey_state_1;case if{key_state=key_state_2;//按键仍按下，状态转换到计时1key_time=0; //清另按键时间计数器}key_statekey_state_0;casekey_state_2:if(key_press){key_statekey_state_0;key_return }elseif(++key_time {key_state=key_state_3;//按下时间>1s，状态转换到计时2key_time=0; //清按键计数器key_return }casekey_state_3:if(key_press)key_statekey_state_0;{if(++key_time {key_time >0.2s，key_return }}}return}unsignedchar{staticunsignedcharkey_state=0,key_time=0;unsignedcharkey_press,key_return=0;key_press b的I/Oswitch{case if(!key_presskey_statekey_state_1;case if{key_state=key_state_2;//按键仍按下，状态转换到计时1key_time=0; //清另按键时间计数器}key_statekey_state_0;casekey_state_2:if(key_press){key_statekey_state_0;key_return }elseif(++key_time {key_state=key_state_3;//按下时间>1s，状态转换到计时2key_time=0; //清按键计数器key_return }casekey_state_3:if(key_press)key_statekey_state_0;{

if(++key_time {key_time >0.2s，key_return }}}return}void{unsignedcharPORTA I/ODDRA=PORTC=DDRC=DDRD= ////T/C0 //OCR0= T/C0for(i=0;i<8 //LED初始显示8个"" //开放全局中断while{if{key_stime_ok=0; 10ms到switch(read_key_n_a()){casefor(i=0;i<7;{dis_buff[i]=dis_buff[i+1];} //LED显示左移一位dis_buff[7]=1; //最右显示acase2:for(i=0;i<7;{dis_buff[i]=dis_buff[i+1];} //LED显示左移一位dis_buff[7]=1; //最右显示a}switch{casefor(i=0;i<7;{dis_buff[i]=dis_buff[i+1];} //LED显示左移一位dis_buff[7]=2; //最右显示bcase2:for(i=0;i<7;{dis_buff[i]=dis_buff[i+1];} //LED显示左移一位dis_buff[7]=2; //最右显示b}}}}个作为数字按下两次，将LED数码管内容清为0。初始状态显示0。 #include<mega16.h>#defineucharunsignedchar#definenokey255flashucharflashucharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};uchardisbuff[8];ucharposit=0;unsignedlongintresult[3];ucharkeynow; uchartime_10ms_counter;bittime_10ms_ok;ucharreset=0,i,j,k=0;bitplus=0,cleardis=0,clearres=0;voiddisplay() interruptinterrupt P] uchar{staticucharkeystate=0,keyvalue,keyline;ucharkeyreturn=nokey; case case case case case casecasecasecasecasecasecasecasecase}}}}casecase}}returnreturn}}void{ 该是while(1) {{}}}}{{}}}}}}#include<mega16.h>#defineucharunsignedchar#definenokey255flashucharled_7[13]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x00};flashucharposition[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};uchardisbuff[8];ucharposit=0;unsignedlongintresult[3];ucharkeynow;uchartime_10ms_counter;bittime_10ms_ok;ucharbitplus=0,cleardis=0,clearres=0;voiddisplay() }interrupt P] {{ }}uchar{staticucharkeystate=0,keyvalue,keyline;ucharkeyreturn=nokey;{case{case1:

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