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1、试验报告姓名：文可鑫 学号： 20072121010专业：电子信息工程1 编写一个秒表程序，使用查询方式；list p=16f877a includep16f877a.inc include countequ20h count_sequ21horg000h start nopcallInitSPIbanksel OPTION_REG movlw04hmovwfOPTION_REG banksel INTCON movlw00hmovwfINTCON movlw06h movwfTMR0 movlwd131 movwfcount movlw00h movwfcount_smainbtfssINT
2、CON,T0IF goto$-1movlw06h movwfTMR0bcfINTCON,T0IFincfcount,f btfssSTATUS,Z gotomain movlwd131 movwfcount incfcount_s,f movfcount_s,w sublwd60 btfscSTATUS,Z clrfcount_s movfcount_s,w callBin2BCDmovfDIS_TEMP2,w callCHAR_CODE1 movwfDIS_TEMP2movfDIS_TEMP1,w callCHAR_CODE1 movwfDIS_TEMP1 callLEDlightnopgo
3、tomain CHAR_COD；E1共阴极字符表ADDWFPCL,FRETLW 3fh；0RETLW 06h；1RETLW 5bh；2RETLW 4fh；3RETLW 66h；4RETLW 6dh；5RETLW 7dh；6RETLW 07h；7RETLW 7fh；8RETLW 6fh；9Bin2BCDCLRFDIS_TEMP1 MOVWFDIS_TEMP2TtenthOUTendMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUT MOVWFDIS_TEMP2 INCFDIS_TEMP1,FGOTO TtenthRETURN2 编写一个秒表程序，使
4、用中断方式；list p=16f877a includep16f877a.inc include countequ20h count_sequ21h W_tempequ 23H STA_temp equ 24Horg 000h goto start org 004h goto intpstart nopcallInitSPIbanksel OPTION_REG movlw44hmovwfOPTION_REG banksel INTCON movlw0a0hmovwfINTCON movlw06h movwfTMR0 movlwd131 movwfcount movlw00h movwfcoun
5、t_sheregotohere intpbtfssINTCON,T0IF goto$-1movlw06hmovwfTMR0bcfINTCON,T0IFincfcount,f btfssSTATUS,Z gotointp movlwd131 movwfcount incfcount_s,fmovfcount_s,w sublwd60 btfscSTATUS,Z clrfcount_s movfcount_s,w callBin2BCDmovfDIS_TEMP2,w callCHAR_CODE1 movwfDIS_TEMP2 movfDIS_TEMP1,w callCHAR_CODE1 movwf
6、DIS_TEMP1 callLEDlightnop RETFIECHAR_CODE；1共阴极字符表 ADDWFPCL,FRETLW 3fh；0RETLW 06h；1RETLW 5bh；2RETLW 4fh；3RETLW 66h；4RETLW 6dh；5RETLW 7dh；6RETLW 07h；7RETLW 7fh；8RETLW 6fh；9Bin2BCDCLRFDIS_TEMP1 MOVWFDIS_TEMP2TtenthOUTMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUT MOVWFDIS_TEMP2 INCFDIS_TEMP1,FGOTO T
7、tenthRETURNend CHAR_CODE；1共阴极字符表 ADDWFPCL,FRETLW 3fh；0RETLW 06h；1RETLW 5bh；2RETLW 4fh；3RETLW 66h；4RETLW 6dh；5RETLW 7dh；6RETLW 07h；7RETLW 7fh；8RETLW 6fh；9Bin2BCDCLRFDIS_TEMP1 MOVWFDIS_TEMP2TtenthMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUT MOVWFDIS_TEMP2OUTendINCFDIS_TEMP1,FGOTO Ttenth RETURNlis
8、t p=16f877a includep16f877a.inc include countequ20h count_sequ21horg 000h goto start org 004h goto intpstart nopcallInitSPIbanksel OPTION_REG movlw04hmovwfOPTION_REGbanksel INTCON movlw00h movwfINTCON movlw06h movwfTMR0 movlwd131 movwfcount movlw00h movwfcount_sheregotohereintpbtfssINTCON,T0IF goto$
9、-1movlw06hmovwfTMR0bcfINTCON,T0IFincfcount,f btfssSTATUS,Z gotointp movlwd131 movwfcount incfcount_s,fmovfcount_s,w sublwd60 btfscSTATUS,Z clrfcount_smovfcount_s,w callBin2BCDmovfDIS_TEMP2,w callCHAR_CODE1 movwfDIS_TEMP2 movfDIS_TEMP1,w callCHAR_CODE1 movwfDIS_TEMP1 callLEDlightnop RETFIECHAR_CODE；1共阴极字符表ADDWFPCL,FRETLW 3fh；0RETLW 06h；1RETLW 5bh；2RETLW 4fh；3RETLW 66h；4RETLW 6dh；5RETLW 7dh；6RETLW 07h；7RETLW 7fh；8RETLW 6fh；9Bin2BCDCLRFDIS_TEMP1 MOVWFDIS_TEMP2TtenthOUTendMOVLW.10 SUBWFDIS_TEMP2,W BTFSS STATUS,C GOTO OUT MOVWFDIS_TEMP2 INCFDIS_TEMP1,FGOTO Ttenth RETURN