单片机课后题程序.doc

5-1#include #define uchar unsigned char#define uint unsigned intsbit L1=P10;sbit L2=P11;sbit L3=P12;sbit RST=P35;/*延时 1ms 子程序*/void delay1ms(uint t) uint i;while(t)for(i=0;i125;i+);void H1() interrupt 0 L1=0;EX1=0;ET0=0;void H2() interrupt 2 L2=0;EX0=0;ET0=0;void H3() interrupt 1 L3=0;EX0=0;EX1=0;void init()TMOD=0x06;TL0=0xFF;TH0=0xFF;TCON=0x10;IE=0x87;P1=0xff; P3=0xff;void main(void)while(1)init();/while(P3=0xff);while(1)if(RST=0)/delay1ms(10);if(RST=0)break;5-2#include#define uint unsigned int#define uchar unsigned charvoid delay()uint i;for(i=0;i256;i+);void int0() interrupt 0P0=P1;delay();void init()IT0=0;EA=1;EX0=1;void main()init();while(1)if(P1=0xff)P0=0xff;5-5#include #define uint unsigned int#define uchar unsigned charsbit key=P32;uint i;uint tab=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,; /*正向流水灯*/ void delay()uint i;for(i=0;i256;i+);void int0() interrupt 0i+;if(i=8)i=0;void init()IT0=1;EX0=1; EA=0;void main(void)init();while(key);EA=1;while(1)P1=tabi;delay();6-5#include #define uchar unsigned char#define uint unsigned intsbit LIGHT_ON=P12;/LIGHT_ON,发光二极管控制引脚uchar icount;/记录溢出次数void timer0isr(void) interrupt 1 using 1TH0 = 0x3C;TL0 = 0xB0; /重置计数初值icount+; /溢出次数加1if(icount = 10)icount = 0; LIGHT_ON = !LIGHT_ON; /累计够0.5秒时溢出次数加清0并控制灯闪烁 void main(void)icount = 0; /记录溢出次数TMOD = 0x01; /设定T/C0工作在定时器方式1LIGHT_ON = 1;TH0 = 0x3C;TL0 = 0xB0; /装载计数初值EA = 1; /开总中断ET0 = 1; /开T/C0中断TR0 = 1; /启动T/C0while(1);6-6#include #define uchar unsigned char#define uint unsigned intsbit LEVEL=P13;/LEVEL,P1.3引脚上的电平值uchar highcount;/记录高电平定时次数void timer0isr(void) interrupt 1 using 1TH0 = 0xf8;TL0 = 0x30; /重置计数初值highcount+; /溢出次数加1if(highcount = 1)LEVEL = 0; if(highcount = 2)LEVEL = 1; highcount = 0;void main(void)highcount = 0; /记录高电平定时次数TMOD = 0x01; /设定T/C0工作在定时器方式1LEVEL = 1;/初始电平为高TH0 = 0xf8;TL0 = 0x30; /装载计数初值EA = 1; /开总中断ET0 = 1; /开T/C0中断TR0 = 1; /启动T/C0while(1);6-8#include #define uchar unsigned char#define uint unsigned intsbit LEVEL=P13;/LEVEL,P1.3引脚上的电平值uchar highcount;/记录高电平定时次数void timer0isr(void) interrupt 1 using 1TH0 = 0xD8;TL0 = 0xF0; /重置计数初值highcount+; /溢出次数加1if(highcount = 50)LEVEL = 0; if(highcount = 250)LEVEL = 1; highcount = 0;void main(void)highcount = 0; /记录高电平定时次数TMOD = 0x01; /设定T/C0工作在定时器方式1LEVEL = 1;/初始电平为高TH0 = 0xD8;TL0 = 0xF0; /装载计数初值EA = 1; /开总中断ET0 = 1; /开T/C0中断TR0 = 1; /启动T/C0while(1);6-9#include #define uint unsigned int#define uchar unsigned charsbit P20=P20;sbit P21=P21;uchar count;uchar counth,countl;const uchar tab=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,; /*显示09*/void delay() uint i,j; for(i=0;i256;i+); for(j=0;j256;j+);void timer0isr(void) interrupt 1 using 1TH0 = 0xff;TL0 = 0xff; /重置计数初值count+; if(count=100) count=0;void main(void) TMOD=0x05; TH0 = 0xff; TL0 = 0xff; EA=1; /重置计数初值 TR0=1; ET0=1; while(1) counth=count/10; countl=count%10; P0=tabcounth; P21=1; delay(); P21=0; P0=tabcountl; P20=1; delay(); P20=0; 4-5#include sbit L1=P10;/*延时0.2秒子程序*/vo