基于單片機(jī)的數(shù)字溫度計(jì)設(shè)計(jì)含程序、仿真圖-資料下載頁
2025-06-05 16:37本頁面
【正文】 LCALL WRITE 第 15 頁 共 20 頁 MOV A, 44H 。讀溫度 LCALL WRITE LCALL DISPLAY 。顯示溫度 LCALL RESET_PULSE 。調(diào)用復(fù)位脈沖程序 MOV A, 0CCH 。跳過 ROM 命令 LCALL WRITE MOV A, 0BEH 。讀緩存命令 LCALL WRITE LCALL READ RET 。復(fù)位脈沖程序 RESET_PULSE: RESET: SETB DATA_BUS NOP NOP CLR DATA_BUS MOV R7, 255 DJNZ R7, $ SETB DATA_BUS MOV R7, 30 DJNZ R7,$ JNB DATA_BUS, SETB_FLAG CLR FLAG AJMP NEXT SETB_FLAG: SETB FLAG NEXT: MOV R7, 120 DJNZ R7, $ 第 16 頁 共 20 頁 SETB DATA_BUS JNB FLAG, RESET RET 。寫命令 WRITE: SETB DATA_BUS MOV R6, 8 CLR C WRITING: CLR DATA_BUS MOV R7, 5 DJNZ R7, $ RRC A MOV DATA_BUS, C MOV R7, 30H DJNZ R7, $ SETB DATA_BUS NOP DJNZ R6, WRITING RET 。循環(huán)顯示段位 DISPLAY: MOV R4, 200 DIS_LOOP: MOV A, DIS_DP MOV P2, 0FFH MOV P0, A CLR LCALL DELAY2MS 第 17 頁 共 20 頁 MOV A, DIS_GE MOV P2, 0FFH MOV P0, A SETB CLR LCALL DELAY2MS MOV A, DIS_SHI MOV P2, 0FFH MOV P0, A CLR LCALL DELAY2MS MOV A, DIS_BAI MOV P2, 0FFH MOV P0, A MOV A, TEMP_BAI CJNE A, 0,SKIP AJMP NEXTT SKIP: CLR LCALL DELAY2MS NEXTT: NOP DJNZ R4, DIS_LOOP RET 。讀命令 READ: SETB DATA_BUS MOV R0, TEMP_L MOV R6, 8 MOV R5, 2 CLR C 第 18 頁 共 20 頁 READING: CLR DATA_BUS NOP NOP SETB DATA_BUS NOP NOP NOP NOP MOV C, DATA_BUS RRC A MOV R7, 30H DJNZ R7, $ SETB DATA_BUS DJNZ R6, READING MOV @R0, A INC R0 MOV R6, 8 SETB DATA_BUS DJNZ R5, READING RET 。數(shù)據(jù)處理 PROCESS: MOV R7, TEMP_L MOV A, 0FH ANL A, R7 MOV TEMP_DP,A MOV R7, TEMP_L 第 19 頁 共 20 頁 MOV A, 0F0H ANL A, R7 SWAP A MOV TEMP_L, A MOV R7, TEMP_H MOV A, 0FH ANL A, R7 SWAP A ORL A, TEMP_L MOV B, 64H DIV AB MOV TEMP_BAI,A MOV A, 0AH XCH A, B DIV AB MOV TEMP_SHI,A MOV TEMP_GE,B MOV A, TEMP_DP MOV DPTR, TABLE_DP MOVC A, @A+DPTR MOV DPTR, TABLE_INTER MOVC A, @A+DPTR MOV DIS_DP, A MOV A, TEMP_GE MOV DPTR, TABLE_INTER MOVC A, @A+DPTR MOV DIS_GE, A MOV A, TEMP_SHI 第 20 頁 共 20 頁 MOV DPTR, TABLE_INTER MOVC A, @A+DPTR MOV DIS_SHI, A MOV A, TEMP_BAI MOV DPTR, TABLE_INTER MOVC A, @A+DPTR MOV DIS_BAI ,A RET DELAY2MS: MOV R6, 3 LOOP3: MOV R5, 250 DJNZ R5, $ DJNZ R6, LOOP3 RET TABLE_DP: DB 00H,01H,01H,02H,03H,03H,04H,04H,05H,06H DB 06H,07H,08H,08H,09H,09H TABLE_INTER: DB 03FH,006H,05BH,04FH,066H DB 06DH,07DH,07H,07FH,06FH END
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