微机原理与接口技术课设—数据采集控制系统与数字电压表显示.doc

微机原理与接口技术课设数据采集控制系统与数字电压表显示程序清单及注释：STACKSEGMENT STACKDB 256 DUP(?)STACKENDSDATASEGMENT MIN DB 0FFH MAX DB 00HSUM DW 0000HVR DB00HLED DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07HDB 7FH,6FH,77H,7CH,39H,5EH,79H,71HVAR DB 00HDATAENDSCODE SEGMENTASSUME CS:CODE,DS:DATA,SS:STACKSTART:MOV AX,DATAMOV DS,AXMOV AL,00H;数码管初始化MOV DX,284HOUT DX,ALMOV AL,10000010B;8255初始化MOV DX,28BHOUT DX,ALMOV AL,0FFHMOV DX,288HOUT DX,ALMOV AL,00010001B;8253初始化 MOV DX,28FHOUT DX,ALMOV AL,1HMOV DX,28CHOUT DX,ALMOV AL,01010001BMOV DX,28FHOUT DX,ALMOV AL,1HMOV DX,28DHOUT DX,ALL1:IN AL,289H;判断k7TEST AL,10000000BJZ ENDLCALL SAMPLE;调用采样子过程MOV AX,SUM;计算VRXOR BX,BXMOV BL,MINSUB AX,BXMOV BL,MAXSUB AX,BXMOV BL,8DIV BLMOV VR,AL ;存均值VRMOV DX,289H ;判断k6IN AL,DXTEST AL,01000000BJZ L6CMP VR,0JC L1;VR0CMP VR,51JBE L7 ;0=VR=51CMP VR,102JBE L8 ;51VR=102CMP VR,153JBE L9 ;102VR=153CMP VR,204JBE L10 ;153VR=204CMP VR,255JBE L11 ;204VR=255JMP L1L7:CALL DIS1;调用子过程1,数码显示1，L1L8显示单灯左跳JMP L1L8:CALL DIS2;调用子过程2,数码显示2，L1L8显示双灯右跳JMP L1L9:CALL DIS3;调用子过程3,数码显示3，L1L8显示向左渐亮JMP L1L10:CALL DIS4;调用子过程4,数码显示4，L1L8显示向右渐灭JMP L1L11:CALL DIS5;调用子过程5,数码显示5，L1L8闪动显示A/D值;LOG灯1秒闪动一次报警JMP L1L6:CALL DIS6;调用子过程6,进行数字有电压表显示JMP L1ENDL: MOV AX,4C00H ;返回dos界面INT 21HSAMPLEPROC;定义采样子过程MOV CX,10XOR AX,AX;变量赋初值MOV MAX,ALMOV SUM,AXMOV AL,0FFHMOV MIN,ALL2:MOV DX,290H ;采样 启动转换OUT DX,ALMOV DX,289HL3:IN AL,DX;判断转换是否完成TEST AL,00000001BJZ L3XOR AX,AX;读取转换数据MOV DX,290HIN AL,DXCMP AL,MIN;将获得数据与最小值MIN比较，如果比最小值小;则将其支付给最小值MINJNC L4MOV MIN,ALL4:CMP AL,MAX ;将获得数据与最大值MAX比较，如果比最小值小;则将其支付给最小值MINJBE L5MOV MAX,ALL5:ADD SUM,AX ;将获取值加入总数LOOP L2RETSAMPLEENDPDIS1PROC;定义子过程1,数码显示1，L1L8显示单灯左跳MOV CX,8MOV SI,OFFSET LED;数码显示1MOV DX,284HMOV AL,20HOUT DX,ALMOV AL,SI+1MOV DX,280HOUT DX,ALMVO AL,11111110B;设置L1L8显示单灯左跳MOV DX,288HNEXT:OUT DX,ALROL AL,1 ;AL循环左移一位CALL DELAY2LOOP NEXTRETDIS1ENDPDIS2PROC;定义子过程2,数码显示2，L1L8显示双灯右跳MOV CX,7MOV AL,20H;数码显示2MOV DX,284HOUT DX,ALMOV SI,OFFSET LEDMOV AL,SI+2MOV DX,280HOUT DX,ALMOV AL,00111111B;设置L1L8显示双灯右跳MOV DX,288HNEXT1:OUT DX,ALROR AL,1CALL DELAY2LOOP NEXT1RETDIS2ENDPDIS3PROC;定义子过程3,数码显示3，L1L8显示向左渐亮MOV CX,8MOV AL,20H;数码显示3MOV DX,284HOUT DX,ALMOV SI,OFFSET LEDMOV AL,SI+3MOV DX,280HOUT DX,ALMOV AL,0FFH ;设置L1L8显示向左渐亮MOV DX,288HOUT DX,ALCALL DELAY2NEXT2:SHL AL,1OUT DX,ALROR AL,1CALL DELAY2LOOP NEXT2RETDIS3ENDPDIS4PROC;定义子过程4,数码显示4，L1L8显示向右渐灭MOV CX,8MOV AL,20H;数码显示4MOV DX,284HOUT DX,ALMOV SI,OFFSET LEDMOV AL,SI+4MOV DX,280HOUT DX,ALMOV AL,00H;设置L1L8显示向右渐灭MOV DX,288HOUT DX,ALCALL DELAY2MOV AL,80HNEXT3:OUT DX,ALSAR AL,1CALL DELAY2LOOP NEXT3RETDIS4ENDPDIS5PROC;定义子过程5,数码显示5，L1L8闪动显示A/D值 ;LOG灯1秒闪动一次报警MOV CX,4 ;8253工作，LOG灯1秒闪动一次报警MOV AL,27HMOV DX,28FHOUT DX,ALMOV AL,30HMOV DX,28CHOUT DX,ALMOV AL,67HMOV DX,28FHOUT DX,ALMOV AL,10HMOV DX,28DHOUT DX,ALMOV AL,20H;数码显示5MOV DX,284HOUT DX,ALMOV SI,OFFSET LEDMOV AL,SI+5MOV DX,280HOUT DX,ALMOV DX,288HNEXT4:MOV AL,VR ;设置L1L8闪动显示A/D值NOT ALOUT DX,ALCALL DELAY2MOV AL,0FFHOUT DX,ALCALL DELAY2LOOP NEXT4MOV AL,00010001B;8253结束工作MOV DX,28FHOUT DX,ALMOV AL,1HMOV DX,28CHOUT DX,ALMOV AL,01010001BMOV DX,28FHOUT DX,ALMOV AL,1HMOV DX,28DHOUT DX,ALRETDIS5ENDPDIS6PROC;定义数码电压显示子过程MOV SI,OFFSET LEDXOR AX,AXMOV AL,VRMOV BL,5 ;计算小数整数部分DIV BLXOR BX,BXMOV BL,ALMOV VAR,AHMOV AL,08HMOV DX,284HOUT DX,AL ADD BX,SI MOV AL,BX;获取数值的显示码OR AL,80H;置最高位位1，显示小数点MOV DX,280HOUT DX,ALCALL DELAYMOV AL,VAR;计算小数点后第一位AND AX,00FFHMOV BL,10MUL BLMOV BL,51DIV BLXOR BX,BXMOV BL,ALMOV VAR,AHMOV AL,10HMOV DX,284HOUT DX,AL ADD BX,SI MOV AL,BX;获取数值的显示码MOV DX,280HOUT DX,ALCALL DELAYMOV AL,VAR;计算小数点后第二位MOV BL,10MUL DLMOV BL,51DIV BLXOR BX,BXMOV BL,ALMOV AL,20HMOV DX,284HOUT DX,AL ADD BX,SI MOV AL,BX;获取数值的显示码OR AL,80HMOV DX,280HOUT DX,ALCALL DELAYRETDIS6ENDPDELAY PROC;延迟子过程1PUSH CXPUSH DXPUSH AXMOV DX,0FFHLAB:MOV CX,0FFHLAB1:NOP;空操作LOOP LAB1D