基于單片機(jī)的溫度監(jiān)測(cè)電路課程設(shè)計(jì)-閱讀頁(yè)
2025-07-12 20:27本頁(yè)面
【正文】 ETB EX0 SETB SEETB SETB MOV R0,01H 。8位數(shù)據(jù)接口，雙行顯示，5*7點(diǎn)陣 LCALL DIS_CMD _WRT CALL DIS_CUR_OFF MOV 42H,20 MOV 43H,32XIAN: LCALL GET_TEMPER LCALL DISP LCALL DELAY43MS MOV A,TEMPER_NUM SUBB A,42H JC ZZZL MOV A,TEMPER_NUM SUBB A,43H JNC ZZZ2 SETB SETB SETB JMP XIANZZZL: CLR CLR JMP XIANZZZ2: CLR CLR JMP XIANINT0: 。顯示函數(shù)部分，可供調(diào)用DIS_CUR_OFF: MOV R0,0CH LCALL DIS_CMD_WRT RETDIS_CUR_ON: MOV R0,0EH LCALL DIS_CMD_WRT RETCHK_BUSY_FLG: MOV P0,0FFH CLR D2RS NOP NOP NOP LCALL DISPLAY_RD JB ,CHK_BUSY_FLG RETCLEAR_DIS: MOV R0,01H LCALL DIS_CMD_WRT RETDIS_CMD_WRT: LCALL CHK_BUSY_FLG MOV P0,R0 CLR D2RS NOP NOP NOP LCALL DISPLAY_WRT RETDIS_DATA_WRT: LCALL CHK_BUSY_FLG CJNE A,10H,DIS_DAT_WRT1 MOV P0,0C0H 。鍵盤(pán)程序，出口：A為按鍵值 01H：0無(wú)鍵按下 1 有鍵按下KEY: MOV KEYPORT,0FH MOV A,KEYPOR CJNE A,0FH,KEYDOWN MOV A,0FFH RETKEYDOWN: LCALL DELAY43MS MOV KEYPORT,0FH MOV A,KEYPORT CJNE A,0FH,KEYDOWN_YES MOV A,0FFH RETKEYDOWN _YES: MOV B,A MOV KEYPORT,0F0H MOV A,KEYPORT ORL A,B PUSH 30H MOV 30H,AMOV R3,10H MOV DPTR,KEYVALUENEXT_KEY: MOV A,R3 MOVC A,a+dptr CJNE A,30h,NEXTKEYVALUE DEC R3 POP 30HWAITKEY_F: MOV KEYPORT,0FH MOV A,KEYPORT CJNE A,0FH, WAITKEY_F MOV A,R3 SETB 01H RETNEXTKEYVALUE: DJNZ R3,NEXT_KEY DEC R3 POP 30HWAITKEY_FREE: MOV KEYPORT,0FH MOV A,KEYPORT CJNE A,0FH, WAITKEY_FREE MOV A,R3 SETB 01H RETKEYVALUE: DB 0FFH,7EH,7DH,7BH,77H,0BEH,0BDH,0BBH,0B7H,0DEH,0DDH,0DBH,0D7H,0EEH,0EDH,0EBH,0E7HDELAY43MS: PUSH A MOV A,R3 PUSH A MOV A,R2 PUSH AMOV R3,43DELAY: MOV R2,0FAHLOOP: NOP 。確認(rèn)是否修改溫度設(shè)定ASK: MOV R0,01H 。 將從DS18B20中讀出的溫度數(shù)據(jù)進(jìn)行轉(zhuǎn)換TEMPER_COV: MOV A,0f0H ANL A,TEMPER_L 。 四舍五入去溫度值 INC TEMPER_NUMTEMPER_COV1:MOV A,TEMPER_H ANL A,07H SWAP A ORL A,TEMPER_NUM MOV TEMPER_NUM,A
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