单片机在线系统AY-MPU89S51E课件.ppt

实验用硬件平台（含USB接口写入线）,蜂鸣器,驱动器,AD,EEPROM,232电平转换,晶振,继电器,实验用硬件平台（含并口写入线和电源）,单片机在线系统AY-MPU89S51E,AT89S52单片机（跳线接上排针时）6位数码管动态显示（P0输出字形、P2.05选择位）8位LED显示（P1）6位按键输入（P2.72，P3.3）EEPROM：256字节（IIC接口，P3.2 P3.4）8位AD（串行接口）P3.57蜂鸣器（P1.7）、继电器RS232接口（P3.1、P3.2）温度传感器,显示部分,232接口,驱动+继电器,流水灯实验（实验1、2）,1、掌握51单片机如何控制信号输出。2、掌握Keil C集成开发环境的使用。3、掌握51开发平台的使用。4、8个发光管（L1L8）接在P1的07，为0时点亮。5、功能：首先点亮L1、然后L2、最后是L8接着点亮L8、然后是L7 L6 L1如此循环，间隔0.11.0秒,实验1：流水灯实验（汇编程序）,ORG 000HSTART:MOV A,#0FFHCLR CMOV R2,#08H LOOP:RLC AMOV P1,A;输出至P1口LCALL DELAY;调用延迟子程序（延迟100毫秒）DJNZ R2,LOOP MOV R2,#07H;设右移7次LOOP1:RRC A MOV P1,A;输出至P1口 LCALL DELAYDJNZ R2,LOOP1JMP START;跳回到START，再一次循环。DELAY:MOV R4,#200;延迟子程序（100毫秒）250*2*200=500*200usD1:MOV R5,#248;=50*2ms=100msDJNZ R5,$;2us DJNZ R4,D1;2us RETEND,流水灯实验（C程序）,#include reg52.hvoid Delay()unsigned char i,j;for(i=0;i255;i+)for(j=0;j255;j+);void main()unsigned char i,dat;while(1),dat=0 x01;for(i=0;i1;Delay();,查表法点亮LED,给定表格（33个8位数）为1则点亮相应的发光二极管间隔0.30.9秒,实验2：流水灯实验（汇编程序）,BEEP BIT P2.0 BUFF_LED_LP EQU 21H;亮灯循环寄存器 org 000h JMP START ORG 100H;-start:mov P1,#0ffh;初始化MCU端口 MOV A,#00H;初始化寄存器 MOV PSW,#00H MOV IE,#00H MOV SP,#30H MOV BUFF_LED_LP,#00HLOOP:MOV DPTR,#TAB_A_LAMP;设置亮灯花型列表地址(32种)MOV A,BUFF_LED_LP;查询方式读取花型 MOVC A,A+DPTR CPL A MOV P1,A;LED小灯控制口 LCALL DEL1S INC BUFF_LED_LP MOV A,BUFF_LED_LP CJNE A,#32,LOOP MOV BUFF_LED_LP,#00H JMP LOOP,实验2：流水灯实验（汇编程序）续,TAB_A_LAMP:DB 00111100B,10000001B,11000011B,11100111B,11111111B,11100111B,11000011B,10000001B,00000000B DB 00011000B,00111100B,01111110B,11111111B,00000000B,10101010B,10101010B,11001100B DB 10000000B,11000000B,11100000B,11110000B,11111000B,11111100B,11111110B,11111111B DB 11111110B,11111100B,11111000B,11110000B,11100000B,11000000B,10000000B,00000000BdeL1S:MOV R5,#03H;延时子程序(约0.5秒)DEL1S0:mov R6,#0ffh DEL1S1:mov R7,#0ffh djnz R7,$djnz R6,del1S1 DJNZ R5,DEL1S0;CPL BEEP ret END,实验2：流水灯实验（C程序）,#include reg52.hcode unsigned char tab=0 x3c,0 x81,0 xc3,0 xe7,0 xff,0 xe7,0 xc3,0 x81,0 x00,0 x18,0 x3c,0 x7e,0 xff,0 x00,0 xaa,0 xaa,0 xcc,0 x80,0 xc0,0 xe0,0 xf0,0 xf8,0 xfc,0 xfe,0 xff,0 xfe,0 xfc,0 xf8,0 xf0,0 xe0,0 xc0,0 x80,0 x00;void delay()unsigned char i,j,k;for(i=0;i2;i+)for(j=0;j255;j+)for(k=0;k255;k+);void main()unsigned char i;while(1)for(i=0;i33;i+)P1=tabi;delay();,实验5：按键应用实验（汇编）,KEY BIT P3.3 SW1 BIT P2.7;P2.2 by htq ORG 000H START:mov sp,#40h mov p2,#0ffh mov p3,#0ffh MOV P1,#0ffh;clr key WAIT:;JB KEY,$;等候按键!by htq JB SW1,$lcall delay cpl P1.0 JNB SW1,$;wait key is released lcall delay;by htq JMP wait DELAY:MOV R3,#200 D1:MOV R4,#200 DJNZ R4,$DJNZ R3,D1 RET END,功能：按下SW1一次，发光管L1点亮或熄灭,实验5：按键应用实验（C）,/key SW1 is down,LED1 is swap(on or off)#include reg52.h#define uchar unsigned charsbit KEY=P33;sbit SW1=P27;sbit LED1=P10;void Delay()uchar i,j;for(i=0;i200;i+)for(j=0;j200;j+);void main()KEY=0;while(1)while(SW1);Delay();LED1=!LED1;while(!SW1);Delay();,;check all 6 key,light correspond LEDs,edit by htq 2009.9.4 keydatequ 22h KEY BIT P3.3ORG 000H START:mov sp,#40h mov p2,#0ffh mov p3,#0ffh MOV P1,#0ffh;clr keyWAIT:;JB KEY,$;等候按键!by htq mov a,P2 cpla;if some key is down,then the bit is 0 anla,#0fch movkeydat,a;mov P0,a jznokey;the down key is 1;some key is down jbkeydat.7,sw1;sw1 is down jbkeydat.6,sw2;sw2 is down jbkeydat.5,sw3;sw3 is down jbkeydat.4,sw4;sw4 is down jbkeydat.3,sw5;sw5 is down jbkeydat.2,sw6;sw6 is down sjmpnokey,实验5：按键应用实验（keylight1.asm）,sw1:cplp1.0 sjmpnokey1sw2:cplp1.1 sjmpnokey1sw3:cplp1.2 sjmpnokey1sw4:cplp1.3 sjmpnokey1sw5:cplp1.4 sjmpnokey1sw6:cplp1.5nokey1:call delay;by htqnokey:JMP waitDELAY:movR2,#5 d2:MOV R3,#200D1:MOV R4,#200 DJNZ R4,$DJNZ R3,D1 djnzr2,d2 RET END,实验5：按键应用实验（keylight1.c）,/check all 6 key,light correspond LEDs,edit by htq 2009.9.18#include reg52.h#define uchar unsigned charsbit KEY=P33;sbit SW1=P27;sbit LED1=P10;sbit LED2=P11;sbit LED3=P12;sbit LED4=P13;sbit LED5=P14;sbit LED6=P15;bdata uchar KeyDat;void Delay()uchar i,j;for(i=0;i200;i+)for(j=0;j200;j+);,void main()KEY=0;while(1)KeyDat=P2;P0=KeyDat;/if some key is down,then the bit is 0KeyDat=(KeyDat),实验13 八段数码管动态显示（1）,99倒计时：99、980、99P0.07分别对应数码管的af、dpP2.72分别对应6个数码管：LED1LED66个数码管的af、dp相连共阳P2.7为0，点亮P0口为0的字段（如要显示0，则P0输出为：1100 0000B=0 xc0,99倒计时：主程序部分,MIAO EQU 21H GEWEI EQU 22H SHIWEI EQU 23H SCANLED BIT 01H ORG 000H;ORG伪指令使用于程序定位 JMP START ORG 0BH JMP TIMER0;定时0中断入口地址START:MOV SP,#40H;设定堆栈指针 MOV TMOD,#01H;设定定时器1为工作方式1 MOV TH0,#HIGH(65536-5000)MOV TL0,#LOW(65536-5000)SETB TR0 MOV IE,#10000010B MOV R7,#200 MOV MIAO,#99 AJMP$,99倒计时：中断程序部分,TIMER0:PUSH ACC;定时器1中断服务子程序 PUSH PSW MOV TH0,#HIGH(65536-5000)MOV TL0,#LOW(65536-5000)DJNZ R7,TIM0_LP;not 1s MOV R7,#200 DJNZ MIAO,TIM0_LP MOV MIAO,#99;TIM0_LP:MOV A,MIAO LCALL BIN_BCD MOV SHIWEI,A MOV GEWEI,B CPL SCANLED JB SCANLED,SCAN_L1 JMP SCAN_L2 SCAN_L1:MOV P2,#01111111B;显示十位 MOV A,SHIWEI JMP END_SCANSCAN_L2:MOV P2,#10111111B;显示个位 MOV A,GEWEIEND_SCAN:MOV DPTR,#TABLE MOVC A,A+DPTR MOV P0,A POP PSW POP ACC RETIBIN_BCD:MOV B,#10 DIV AB RETTABLE:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H END,99倒计时（实验13）C程序,#include reg52.hbit SecFlag;unsigned char Count4ms;unsigned char disp_buff2;unsigned char disp_cnt;/0.1unsigned char sec;code unsigned char Tab1=0 xC0,0 xF9,0 xA4,0 xB0,0 x99,0 x92,0 x82,0 xF8,0 x80,0 x90,0 x88,0 x83,0 xA7,0 xA1,0 x86,0 x8E;/;数码管显示字型表code unsigned char Tab2=0 x7f,0 xbf;void T0_service(void)interrupt 1TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);Count4ms=Count4ms+1;if(Count4ms=250)Count4ms=0;SecFlag=1;P2=Tabdisp_cnt;/dispP0=Tab1disp_buffdisp_cnt;disp_cnt=disp_cnt+1;if(disp_cnt=2)disp_cnt=0;,void FillDispBuffer(void)disp_buff0=sec/10;disp_buff1=sec%10;void ChangeTime(void)SecFlag=0;sec=sec-1;if(sec=255)sec=99;FillDispBuffer();void main()/initialTMOD=0 x01;TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);TR0=1;ET0=1;EA=1;sec=99;FillDispBuffer();while(1)if(SecFlag)ChangeTime();,void ChangeTime(void)SecFlag=0;sec=sec-1;if(sec=255)sec=99;FillDispBuffer();void main()/initialTMOD=0 x01;TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);TR0=1;ET0=1;EA=1;/sec=99;FillDispBuffer();while(1)if(SecFlag)ChangeTime();,实验14 电子时钟设计,6个数码管显示时、分、秒6个按键分别对时、分、秒进行加1、减1设定6按键SW1、SW6分别对应于P2.7P2.2蜂鸣器：P2.0，为0时鸣响；问题：C程序中，是如何控制蜂鸣器的按键时鸣响的？,C程序：变量定义部分,#include reg52.hsbit Key=P33;bit KeyDownFlg;bit SecFlag;unsigned char Count4ms;unsigned char disp_buff6;unsigned char disp_cnt;/0.5unsigned char hour,min,sec;unsigned char Beep_cnt;unsigned char P2_buff;unsigned char KeyBuff;code unsigned char Tab1=0 xC0,0 xF9,0 xA4,0 xB0,0 x99,0 x92,0 x82,0 xF8,0 x80,0 x90,0 x88,0 x83,0 xA7,0 xA1,0 x86,0 x8E;/;数码管显示字型表code unsigned char Tab6=0 x7f,0 xbf,0 xdf,0 xef,0 xf7,0 xfb;,C程序：定时器0中断服务子程序,void T0_service(void)interrupt 1TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);Count4ms=Count4ms+1;if(Count4ms=250)Count4ms=0;SecFlag=1;P2_buff=Tabdisp_cnt;if(KeyDownFlg)P2_buff=P2_buff,C程序：主程序部分,void main()/initialdisp_cnt=0;Count4ms=0;hour=0;min=0;sec=0;/TMOD=0 x01;TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);TR0=1;ET0=1;EA=1;while(1)if(SecFlag)ChangeTime();if(!Key)DealKey();,按键检测及处理,void DealKey(void)KeyBuff=P2;if(KeyDownFlg)return;if(KeyBuff,实验14 电子时钟设计(shizhong1.asm),BUFF_KEY EQU 21H;键盘键 BUFF_LED1 EQU 22H;数码管显示缓存 BUFF_LED2 EQU 23H BUFF_LED3 EQU 24H BUFF_LED4 EQU 25H BUFF_LED5 EQU 26H BUFF_LED6 EQU 27H BUFF_LED_LP EQU 28H;T0键盘显示扫描缓存 HOR EQU 30H;小时值缓存 MIN EQU 31H;分钟值缓存 SEC EQU 32H;秒值缓存 MSequ 33h F_BEEP BIT 01H LED_PORT EQU P0 DIG_PORT EQU P2 KEY_PORT EQU P2 SW1 BIT P2.7 SW2 BIT P2.6 SW3 BIT P2.5 SW4 BIT P2.4 SW5 BIT P2.3 SW6 BIT P2.2 BEEP BIT P2.0 KEY BIT P3.3,主程序：初始化部分,ORG 000H JMP MAIN ORG 00BH JMP T0_INT ORG 100HMAIN:MOV SP,#40H MOV PSW,#00H MOV R0,#7FH;初始化RAM区,CLR_RAM:MOV A,#00H MOV R0,A DJNZ R0,CLR_RAM MOV P1,0FFH;INIT MOV P2,0FFH MOV P0,0FFH MOV P3,0FFH MOV TMOD,#21h MOV TH0,#240;T0=4MS MOV TL0,#96 SETB TR0 SETB ET0 SETB EA,主程序：按键检测与处理（1）,WAIT_KEY:JB KEY,$;等候按键!JNB SW1,SW1_OK JNB SW2,SW2_OK JNB SW3,SW3_OK JNB SW4,SW4_OK JNB SW5,SW5_OKA JNB SW6,SW6_OKA JMP WAIT_KEYSW5_OKA:JMP SW5_OK SW6_OKA:JMP SW6_OKSW1_OK:MOV A,HOR CJNE A,#24,SW1_OVER MOV HOR,#00H SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW1_OVER:INC HOR;时加1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEY,SW2_OK:MOV A,HOR CJNE A,#00,SW2_OVER MOV HOR,#23 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW2_OVER:DEC HOR;时减1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW3_OK:MOV A,MIN CJNE A,#59,SW3_OVER MOV MIN,#00H SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEY,SW3_OVER:INC MIN;分加1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW4_OK:MOV A,MIN CJNE A,#00,SW4_OVER MOV MIN,#59 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW4_OVER:DEC MIN;分减1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW5_OK:MOV A,SEC CJNE A,#59,SW5_OVER MOV SEC,#00H SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEY,SW5_OVER:INC SEC;秒加1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW6_OK:MOV A,SEC CJNE A,#00,SW6_OVER MOV HOR,#59 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYSW6_OVER:DEC SEC;时减1 SETB F_BEEP CLR BEEP LCALL DEL SETB BEEP CLR F_BEEP JMP WAIT_KEYDEL:MOV R5,#02;为演示方便,人为插入的延时DEL01:MOV R6,#200DEL02:MOV R7,#200 DJNZ R7,$DJNZ R6,DEL02 DJNZ R5,DEL01 RET,中断程序：修改时间部分,T0_INT:PUSH ACC PUSH PSW MOV TH0,#240;T0=4MS MOV TL0,#96 INC BUFF_LED_LP MOV A,BUFF_LED_LP CJNE A,#250,CONT_SCAN;250*4MS=1S MOV BUFF_LED_LP,#00H INC SEC MOV A,SEC CJNE A,#60,CONT_SCAN MOV SEC,#00H INC MIN MOV A,MIN CJNE A,#60,CONT_SCAN MOV MIN,#00H INC HOR MOV A,HOR CJNE A,#24,CONT_SCAN MOV HOR,#00H,中断程序：填充显示缓冲区,CONT_SCAN:MOV A,SEC LCALL BIN_BCD MOV BUFF_LED6,B MOV BUFF_LED5,A MOV A,MIN LCALL BIN_BCD MOV BUFF_LED4,B MOV BUFF_LED3,A MOV A,HOR LCALL BIN_BCD MOV BUFF_LED2,B MOV BUFF_LED1,A MOV A,BUFF_LED_LP MOV B,#06 DIV AB MOV A,B RL A MOV DPTR,#TAB_SCAN JMP A+DPTR,中断程序：动态显示,TAB_SCAN:AJMP SCAN_L1 AJMP SCAN_L2 AJMP SCAN_L3 AJMP SCAN_L4 AJMP SCAN_L5 AJMP SCAN_L6SCAN_L1:MOV DIG_PORT,#01111111B MOV A,BUFF_LED1 JMP END_SCANSCAN_L2:MOV DIG_PORT,#10111111B MOV A,BUFF_LED2 JMP END_SCANSCAN_L3:MOV DIG_PORT,#11011111B MOV A,BUFF_LED3 JMP END_SCANSCAN_L4:MOV DIG_PORT,#11101111B MOV A,BUFF_LED4 JMP END_SCAN,SCAN_L5:MOV DIG_PORT,#11110111B MOV A,BUFF_LED5 JMP END_SCANSCAN_L6:MOV DIG_PORT,#11111011B MOV A,BUFF_LED6END_SCAN:MOV DPTR,#TAB_LED MOVC A,A+DPTR MOV LED_PORT,A JNB F_BEEP,EXIT_T0 CLR BEEPEXIT_T0:POP PSW POP ACC RETITAB_LED:DB 0C0H,0F9H,0A4H,0B0H,99H,92H;数码管显示字型表DB 82H,0F8H,80H,90H,88H,83H,0A7HDB 0A1H,86H,8EH,实验19 AD转换器的使用,功能：对输入的电压进行AD转换，并将结果（0255）用数码管进行显示使用ADC0832双通道，8位AD转换器，单+5V供电，Vref=5VAD输入模拟电压范围：05V5V对应：255串行接口（4线）CS（P3.5）CLK（P2.1）DI（P3.6）DO（P3.7）,ADC0832接口时序,最大的问题,动态显示资源与AD转换器冲突AD转换器与单片机接口的实现,实验19 AD转换器的使用(ad.c),#include reg52.hsbit ADC_CS=P35;sbit ADC_CLK=P21;sbit ADC_DI=P36;sbit ADC_DO=P37;bit SecFlag;bit F_ADC_CLK;unsigned char Count4ms;unsigned char disp_buff6;unsigned char disp_cnt;/0.5unsigned char hour,min,sec;unsigned char Beep_cnt;unsigned char P2_buff;unsigned char ADData;code unsigned char Tab117=0 xC0,0 xF9,0 xA4,0 xB0,0 x99,0 x92,0 x82,0 xF8,0 x80,0 x90,0 x88,0 x83,0 xA7,0 xA1,0 x86,0 x8E,0 xff;/;数码管显示字型表code unsigned char Tab6=0 x7f,0 xbf,0 xdf,0 xef,0 xf7,0 xfb;,定时器0中断服务函数,void T0_service(void)interrupt 1TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);Count4ms=Count4ms+1;if(Count4ms=50)Count4ms=0;SecFlag=1;P2_buff=Tabdisp_cnt;if(!F_ADC_CLK)P2_buff=P2_buff,完成定时（生成1s时间，主函数中每秒进行一次AD转换）扫描数码管,主函数与其他函数,void main()/initialdisp_cnt=0;Count4ms=0;hour=0;min=0;sec=0;/TMOD=0 x01;TH0=(65536-4000)8;TL0=(unsigned char)(65536-4000);TR0=1;ET0=1;EA=1;while(1)if(SecFlag)SecFlag=0;AD();FillDispBuffer();,void FillDispBuffer(void)disp_buff0=16;/blankdisp_buff1=16;disp_buff2=16;disp_buff3=ADData/100;disp_buff4=(ADData%100)/10;disp_buff5=ADData%10;void pulse(void)unsigned char i;F_ADC_CLK=1;ADC_CLK=1;i=2;while(i-0);F_ADC_CLK=0;ADC_CLK=0;i=2;while(i-0);,AD转换函数,void AD(void)unsigned char ret_dat;unsigned char i;ret_dat=0;ADC_CS=0;i=5;ADC_CS=1;while(i-0);ADC_CS=0;ADC_DI=1;pulse();pulse();pulse();for(i=0;i8;i+)ret_dat=ret_dat1;pulse();if(ADC_DO)ret_dat=ret_dat|0 x01;,ADData=ret_dat;if(ret_dat,