温度采集控制汇编程序

1、精选优质文档-倾情为你奉上;-;设定地址;-AD0809IN0EQU0CFA0HDA0832 EQU 0CFA8HCON8279EQU0CFE9HDATA8279EQU0CFE8H;-;起始阈值;-ORG0000HLJMPMAINORG4100HMAIN:MOVR5,#30H ;设置起始阈值MOVDPTR,#CON8279 ;8279命令口地址MOVA,#0D1H;清除8279RAM命令MOVXDPTR,AWAIT:MOVXA,DPTR;判断JBACC.7,WAIT;等待清除完成，DU=0;-;采集电压转化为数字量;-START:MOVDPTR,#AD0809IN0;采样MOVA,#00H ;

2、启动A/DMOVX DPTR,AMOV R7,#0FFHLOOP1:DJNZ R7,LOOP1 ;延时等待AD转换完成MOVX A,DPTRMOV R6,A;保存温度值TRANS:MOV A,R6;温度转换CLRCSUBBA,#53H;计算偏移地址-10度LCALLTAB;取伪温度植MOVR6,A;-;温度显示;-LED1:MOV A,R6;显示当前温度SWAP A;高低字节交换ANL A,#0FHMOV 50H,AMOV A,R6ANL A,#0FHMOV 51H,A LOOP:MOV DPTR,#CON8279 MOV A,#90H MOVX DPTR,A MOV R0,#50H MOV

3、R1,#02H MOV DPTR,#DATA8279DL0: MOV A,R0 ACALL TABLE MOVX DPTR,A INC R0 DJNZ R1,DL0LCALLDEL1;显示完温度;-;按键检测;-MOVDPTR,#CON8279;检查是否有键按下MOVXA,DPTRANLA,#0FHJZFUN2 ;无键按下MOVA,#0A0H;有键按下MOVXDPTR,AMOVA,#40H;40H读RAMMOVXDPTR,AMOVDPTR,#DATA8279MOVXA,DPTRMOVR4,ACJNEA,#0C0H,FUN1INCR5;阈值加一CJNER5,#1AH,DJUST1;矫正1A为20

4、MOVR5,#20HDJUST1:CJNER5,#2AH,FUN2;矫正2A为30MOVR5,#30HLJMPFUN2FUN1:CJNEA,#0C1H,FUN2DECR5CJNER5,#2FH,DJUST2;矫正2F为29MOVR5,#29HDJUST2:CJNER5,#1FH,FUN2;矫正1F为19MOVR5,#19HLJMPFUN2;-;比较阈值，改变转速;-FUN2:MOVA,R6;取温度。比较阈值MOV54H,R5SUBB A,54HJCFUN4;c=1小于阈值FANS1: MOV R7,#00H;快转MOV A,R7LCALLDAZHLJMPLED2FUN4:MOVR7,#0FFH

5、;慢转MOVA,R7LCALLDAZHLED2:MOV A,R5;显示阈值SWAP AANL A,#0FHMOV 52H,AMOV A,R5ANL A,#0FHMOV 53H,A LOOP2:MOV DPTR,#CON8279 MOV A,#94H MOVX DPTR,A MOV R0,#52H MOV R1,#02H MOV DPTR,#DATA8279DL1: MOV A,R0 ACALL TABLE MOVX DPTR,A INC R0 DJNZ R1,DL1；阈值显示完毕LCALLDEL1稳定 LJMP START;重新开始;-;延时函数;-DEL1: MOVR2,#80HDEL2:

6、MOVR3,#0FFHDEL3: DJNZR3,DEL3DJNZR2,DEL2 RET;-; 数摸转换;-DAZH:MOVDPTR,#DA0832 MOVXDPTR,A;写DA输入寄存器 INCDPTR;指向DAC寄存器 MOVXDPTR,A;启动转换RET;-;断码表;-TABLE: INC A;数码管显码转换 MOVC A,A+PC RETDB 3FH,06H,5BH,4FH,66H,6DH,7DH,07HDB 7FH,6FH,77H,7CH,39H,5EH,79H,71H,00HTAB:INC A;温度转换 MOVC A,A+PC RETDB10H,10H,10H,11H,11H,12H,12H,13H,13HDB13H,14H,14H,15H,15H,15H,16H,16H,16HDB17H,17H,17H,18H,18H,18H,19H,19H,19H,DB 19H,19H,20H,20H,20H,21H,21H,21H,21HDB 22H,22H,23H,23H,23H,24H,24H,24H,25HDB 25H,25H,26H,26H,26H,27H,27H,27H,28HDB 28H,28H,29H,29H,29H,30H,30H,30H,31HDB 31H,31H,32H,32H,32H,33H,