PIC單片機電子萬歷實驗分析方案

1、實驗報告姓名：文可鑫 學號：20072121010專業(yè)：電子信息工程1編寫一個秒表程序，使用查詢方式。list p=16f877a includep16f877a.inc include count equ 20h count_sequ 21horg 000h start nopcall InitSPIbanksel OPTION_REGmovlw04hmovwf OPTION_REGbanksel INTCONmovlw00hmovwf INTCONmovlw06hmovwf TMR0movlwd131movwf countmovlw00hmovwf count_smain btfssINT

2、CON,T0IFgoto$-1movlw06hmovwf TMR0bcfINTCON,T0IFincfcount,fbtfssSTATUS,Zgotomainmovlwd131movwf countincfcount_s,fmovfcount_s,wsublwd60btfscSTATUS,Zclrf count_smovfcount_s,wcallBin2BCDmovfDIS_TEMP2,wcall CHAR_CODE1movwf DIS_TEMP2movf DIS_TEMP1,w call CHAR_CODE1 movwf DIS_TEMP1 call LEDlightnop goto ma

3、inCHAR_CODE共陰極字符表ADDWFPCL,FRETLW 3fh。0RETLW 06h。1RETLW 5bh。2RETLW 4fh。3RETLW 66h。4RETLW 6dh。5RETLW 7dh。6RETLW 07h。7RETLW 7fh。8RETLW 6fh。9Bin2BCDCLRF DIS_TEMP1MOVWFDIS_TEMP2TtenthMOVLW.10SUBWFDIS_TEMP2,WBTFSS STATUS,CGOTO OUTMOVWFDIS_TEMP2INCF DIS_TEMP1,FGOTO Ttenth OUTRETURNend2編寫一個秒表程序，使用中斷方式。list

4、p=16f877aincludep16f877a.inc include count equ 20h count_s equ 21hW_temp equ 23HSTA_temp equ 24Horg 000h goto start org 004h goto intpstart nopcall InitSPIbanksel OPTION_REGmovlw 44hmovwf OPTION_REGbanksel INTCONmovlw 0a0hmovwf INTCONmovlw 06hmovwf TMR0movlwd131movwf countmovlw 00hmovwf count_shere

5、gotohereintpbtfssINTCON,T0IFgoto$-1movlw 06hmovwf TMR0bcfINTCON,T0IFincfcount,fbtfssSTATUS,Zgotointpmovlwd131movwf countincfcount_s,fmovfcount_s,wsublwd60btfscSTATUS,Zclrf count_smovfcount_s,wcallBin2BCDmovfDIS_TEMP2,wcallCHAR_CODE1movwf DIS_TEMP2movfDIS_TEMP1,wcallCHAR_CODE1movwfDIS_TEMP1callLEDlig

6、htnopRETFIECHAR_C0DE1共陰極字符表ADDWFPCL,FRETLW 3fh。0RETLW 06h。1RETLW 5bh。2RETLW 4fh。3RETLW 66h。4RETLW 6dh。5RETLW 7dh。6RETLW 07h。7RETLW 7fh。8RETLW 6fh。9Bin2BCDCLRF DIS_TEMP1MOVWFDIS_TEMP2 TtenthMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUTMOVWFDIS_TEMP2 INCF DIS_TEMP1,F GOTO TtenthOUTRETURNend CHAR_C

7、0DE1共陰極字符表ADDWFPCL,FRETLW 3fh。0RETLW 06h。1RETLW 5bh。2RETLW 4fh。3RETLW 66h。4RETLW 6dh。5RETLW 7dh。6RETLW 07h。7RETLW 7fh。8RETLW 6fh。9Bin2BCDCLRF DIS_TEMP1MOVWFDIS_TEMP2 TtenthMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUTMOVWFDIS_TEMP2INCF DIS_TEMP1,FGOTO TtenthOUTRETURN end list p=16f877a includep1

8、6f877a.inc includecount equ 20hcount_s equ 21horg 000hgoto startorg 004hgoto intpstart nopcall InitSPIbanksel OPTION_REGmovlw 04hmovwf OPTION_REGbanksel INTCONmovlw 00hmovwf INTCONmovlw 06hmovwf TMR0movlw d131movwf countmovlw 00hmovwf count_shere gotohereintp btfssINTCON,T0IFgoto$-1movlw 06hmovwf TM

9、R0bcfINTCON,T0IFincfcount,fbtfssSTATUS,Zgotointpmovlw d131movwf countincfcount_s,fmovfcount_s,wsublwd60btfscSTATUS,Zclrf count_smovf count_s,w call Bin2BCD movf DIS_TEMP2,w call CHAR_CODE1movwf DIS_TEMP2 movf DIS_TEMP1,w call CHAR_CODE1 movwfDIS_TEMP1 call LEDlight nopRETFIECHAR_C0DE1共陰極字符表ADDWFPCL,F RETLW 3fh。0RETLW 06h。1RETLW 5bh。2RETLW 4fh。3RETLW 66h。4RETLW 6dh。5RETLW 7dh。6RETLW 07h。7RETLW 7fh。8RETLW 6fh。9