LCD液晶顯示屏設(shè)計書

1、LCD液晶顯示屏設(shè)計書一、設(shè)計的目的1 學(xué)習(xí)液晶顯示的編程方法，了解液晶顯示模塊的工作原理。 掌握液晶顯示模塊與單片機的接口方法。2 . 學(xué)習(xí)和了解微型打印機模塊的工作原理。 掌握微型打印機模塊與單片機的接口方法。二、設(shè)計的題目和要求編程實現(xiàn)在液晶顯示屏上顯示且實現(xiàn)打印雙行中文漢字“ XX 大學(xué) XX 學(xué)院” 。三、設(shè)計報告的容3.1 、總體實驗功能要求設(shè)計并實現(xiàn)程序：1、在點陣式LCD奠塊上雙彳f顯示“ XX大學(xué)XX學(xué)院”。2、打印機雙行打印“大學(xué)信息學(xué)院”字樣。3.2 、實現(xiàn)方案1、LC酸晶顯示屏模塊在點陣式LC蟆塊上雙彳f顯示“ X雙學(xué)XX學(xué)院”：硬件接口接口協(xié)議為 請求 / 應(yīng)答（RE

2、Q/BUS）Y 握手方式。應(yīng)答B(yǎng)USY 高電平（BUSY =1）表示OCMJ 忙于部處理，不能接收用戶命令； BUSY 低電平（BUSY =0表示OCM應(yīng)閑，等待接收用戶命令。發(fā)送命令到OCMJ可在 BUSY =0 后的任意時刻開始，先把用戶命令的當(dāng)前字節(jié)放到數(shù)據(jù)線上，接著發(fā)高電平REQ信號（REQ =1通知OCMJ請求處理當(dāng)前數(shù)據(jù)線上的命令或數(shù)據(jù)。OCM底塊在收到外部的REQ高電平信號后立即讀取數(shù)據(jù)線上的命令或數(shù)據(jù)，同時將應(yīng)答線BUSY 變?yōu)楦唠娖?，表明模塊已收到數(shù)據(jù)并正在忙于對此數(shù)據(jù)的部處理，此時，用戶對模塊的寫操作已經(jīng)完成，用戶可以撤消數(shù)據(jù)線上的信號并可作模塊顯示以外的其他工作，也可不斷

3、地查詢應(yīng)答線BUSY是否為低（BUSY =0 ）,如果BUSY =0表明模塊對用戶的寫操作已經(jīng)執(zhí)行完畢?？梢栽偎拖乱粋€數(shù)據(jù)。如向模塊發(fā)出一個完整的顯示漢字的命令，包括坐標(biāo)及漢字代碼在共需5 個字節(jié)，模塊在接收到最后一個字節(jié)后才開始執(zhí)行整個命令的部操作，因此， 最后一個字節(jié)的應(yīng)答B(yǎng)USY高電平（BUSY =1）持續(xù)時間較長，具體的時序圖和時間參數(shù)說明查閱相關(guān)手冊。1.1、 點陣打印機模塊打印機雙行打印“大學(xué) 信息學(xué)院”字樣：進紙按鈕：按下時，自動進紙。 啟動 / 停止按鈕：向上時，啟動打??；向下時，停止打印。設(shè)計實現(xiàn)流程框圖如下：.專業(yè) .專注 .開始.專業(yè).專注.接口掛箱針式微型打印機模塊3.

4、3、 實驗?zāi)K對象掛箱 點陣式LCD模塊cpumgCPUfe炭（80C318251/8255擴展橫塊8051CPU模塊3.4、 系統(tǒng)定義定義CP捱箱上的K1平推開關(guān)為打印機控制開關(guān)3.5、 實驗連線LCDS示模塊用串口電纜將串口（ DB9與計算機的COM相連檄忱技騰；I 1一卜1卜3WSH 5)? 0B< 7 3毗0 ?|上0，4 *00 (*5TJ1*初5¥15 RIStT IT RT11 亦 me *7常有關(guān)LCD屏顯模塊的連線1、用導(dǎo)線將PA.0（CPU模塊）2、用導(dǎo)線將PA.1（CPU模塊）3、用導(dǎo)線將PA.2（CPU模塊）4、用導(dǎo)線將PA.3（CPU模塊）5、用導(dǎo)線將

5、PA.4（CPU模塊）6、用導(dǎo)線將PA.5（CPU模塊）7、用導(dǎo)線將PA.6（CPU模塊）8、用導(dǎo)線將PA.7（CPU模塊）9、用導(dǎo)線將PC7（CPU模塊）與與DB0（LCD模塊）相連與DB1（LCD塊）相連與DB2（LCDH塊）相連與DB3（LCD模塊）相連與DB4（LCD莫塊）相連與DB5（LCD模塊）相連與DB6（LCD莫塊）相連與DB7（LCD模塊）相連BUSY（LCD莫塊）相連10、用導(dǎo)線將PC0（CPU模塊）與REQ（LCD莫塊）相連片選信號CS8255選擇CS0針式微型打印機模塊RESET（PRINTER1塊）相連TIMEDETECT（PRINTER1 塊）相PRINTPOWER

6、（PRINTER 塊）相PSA（PRINTE做塊）相連PSB（PRINTE做塊）相連PSC（PRINTE骸塊）相連PSD（PRINTE骸塊）相連K1（CPU掛箱） 相連有關(guān)打印機模塊的連線1、用導(dǎo)線將P1.0（CPU模塊）2、用導(dǎo)線將P1.1（CPU模塊）連3、用導(dǎo)線將P1.2（CPU模塊）連4、用導(dǎo)線將P1.3（CPU模塊）5、用導(dǎo)線將P1.4（CPU模塊）6、用導(dǎo)線將P1.5（CPU模塊）7、用導(dǎo)線將P1.6（CPU模塊）8、用導(dǎo)線將P1.7（CPU模塊）3.6、 實驗現(xiàn)象觀察與調(diào)試1、 首先檢查連線，保證連線正確，然后給系統(tǒng)加電。2、 上位機運行8051的上位機程序，系統(tǒng)連接正常后，打開

7、試驗程序WXDYJJLCDK乙ASM譯、連接后，全速運行程序（根據(jù)需要可單步運行、 單步跟蹤、設(shè)置斷點）。3、LCDS示模塊：程序全速運行后，在LCDI塊顯示“大學(xué)信息學(xué)院”。4、打印：打印機模塊上有一個進紙按鈕：按下時，自動進紙。 K1 是啟動 / 停止按鈕： 向上時， 啟動打??； 向下時， 停止打印。 打印出兩行字 “大學(xué)信息學(xué)院” 。四、結(jié)論8255擴展模塊是一種常用的可編程并行I/O 接口芯片，片有PA、 PB、PC 三個 8 位可編程雙向通用擴展I/O 口?？刂凭€控制8255的讀、寫、復(fù)位及片選等：RDD讀控制線，低電平有效，當(dāng)其為低電平時，CPU寸8255進行讀操作，此時 8255

8、 相應(yīng)口為輸入口。WR寫控制線，低電平有效，當(dāng)其為低電平時，CP酶出數(shù)據(jù)或命令到8255端口，此時 8255相應(yīng)口為輸出口。RESET復(fù)位端，高電平有效。當(dāng)其為高電平時，8255部寄存器全部清零，24條I/O 口線為高阻態(tài)。CS:片選端，低電平有效。當(dāng)其為低電平時，CP選中此8255芯片。通過CP模塊的控制LCD打印機模塊，使其發(fā)寸¥相應(yīng)的功能，完成 CPU 控制的總功能。五、參考文獻(xiàn)1 迎新，等 . 單片機初級教程M. 航空航天大學(xué)， 2000.2 何立民 . MCS-51 系列單片機應(yīng)用系統(tǒng)設(shè)計配置與接口技術(shù)M . 航空航天大學(xué)， 1990.3孟利利MCS-51系列單片機應(yīng)用實驗

9、課程報告 微型打印機及LCD空制實驗 ， 2011.專業(yè) .專注 .附錄：程序代碼;correctCSEG AT 4000HLJMP STARTCSEG AT 4100HSTART:MOV P1, #0FFHSTART1:MOV 20H, #00HMOV 21H, #00HMOV50H,20HLCALL DELAY100MMOV R5,#08HMOV R6,#90HMOV R7,#2MOV R1,#0JNB P1.7,PRINT603LJMP START1PRINT603:MOV A,20HJB ACC.0,PRINT51CLR P1.2PRINT50:LCALL PRINTLINEMOV R

10、7,#33HDJNZ R5,PRINT50NOPSETB P1.2LCALL DELAY100MMOV R5,#8CLR P1.2.專業(yè) .專注 .PRINT51:LCALL PRINTLINEMOV R7,#33HDJNZ R5,PRINT51NOPSETB P1.2LCALL DELAY100MMOV R5,#7CLR P1.2PRINT52: LCALL PRINTLINEMOV R7,#33HDJNZ R5,PRINT52NOPSETB P1.2LCALL DELAY100MLJMP START100.專業(yè) .專注 .DELAY100M: MOV R6, #40;60msDEL1:MO

11、V R7, #250DEL2:NOPNOPDJNZ R7, DEL2DJNZ R6, DEL1RETWAIT:CLR AMOV C,P1.1RLC AMOV 41H,AMOV 50H,AXRL A,40HJZ WAITMOV 40H,41HMOV 50H,41HRETPRINTLINE: NOPJNB P1.0,PRINTLINEMOV R2, #60HMOV R3,#00HCLR AMOV C,P1.1RLC AMOV 40H,AMOV50H,40HLCALL WAITPRINT300: MOV DPTR,#TABLE11LCALL PRINT1MOV DPTR,#TABLE12LCALL

12、PRINT2MOV DPTR,#TABLE13LCALL PRINT3MOV DPTR,#TABLE14LCALL PRINT4INC R3MOV A,R3CJNE A,#8,PRINT300MOV R3,#0INC R1DEC R7MOV A,R2JNZ PRINT300NOPRETPRINT1:MOV A,R3JNZ PRINT400MOV A, R1MOVC A, A+DPTRMOV 43H,APRINT400:MOV A,43HJNB ACC.7, PRINT111CLR P1.3LCALL WAITSETB P1.3LJMP PRINT311PRINT111:LCALL WAITPR

13、INT311:MOV A,43HRL AMOV 43H,AMOV 50H,43HRETPRINT2:DEC R2MOV A,R3JNZ PRINT401MOV A,R1MOVC A,A+DPTRMOV 44H,APRINT401:MOV A,44HJNB ACC.7,PRINT11CLR P1.4LCALL WAITSETB P1.4LJMP PRINT312PRINT11:LCALL WAITPRINT312: MOV A,44HRL AMOV 44H,AMOV 50H,44HRETPRINT3:DEC R2MOV A,R3JNZ PRINT402MOV A,R1.專業(yè) .專注 .MOVC

14、A,A+DPTRMOV 45H,APRINT402:MOV A,45HJNB ACC.7,PRINT21CLR P1.5LCALL WAITSETB P1.5LJMP PRINT313PRINT21: LCALL WAITPRINT313:MOV A,45HRL AMOV 45H,AMOV 50H,45HRET.專業(yè) .專注 .PRINT4:DEC R2MOV A,R3JNZ PRINT403MOV A,R1MOVC A,A+DPTRMOV 46H,APRINT403:MOV A,46HJNB ACC.7,PRINTENDCLR P1.6LCALL WAITSETB P1.6LJMP PRIN

15、T314PRINTEND:LCALL WAITPRINT314:MOV A,46HRL AMOV 46H,AMOV 50H,46HDEC R2INC R7RETTABLE12: DB00H,00H,00H,00H,00H,00H,10H,00H,00H,0CH,00H,78H,04H,1FH,80H,04HDB10H,00H,00H,90H,00H,01H,10H,00H,21H,10H,00H,32H,10H,0CH,12H,1FHDB0F0H,12H,10H,40H,04H,10H,40H,04H,10H,40H,04H,30H,40H,08H,30H,40HDB78H,20H,40H,1

16、8H,20H,40H,18H,60H,40H,18H,40H,40H,18H,80H,40H,19HDB 00H,40H,02H,00H,40H,00H,00H,00HTABLE11:DB00H,00H,00H,00H,00H,00H,03H,86H,00H,01H,06H,00H,01H,0CH,00H,31HDB08H,08H,31H,0FH,0FCH,11H,10H,00H,11H,12H,00H,11H,21H,80H,11H,40HDB0C0H,11H,80H,40H,11H,00H,08H,11H,1FH,0FCH,11H,11H,88H,11H,11H,88 HDB11H,11H

17、,88H,31H,11H,88H,31H,11H,88H,21H,11H,88H,01H,1FH,0F8H,01HDB 10H,08H,01H,10H,08H,02H,00H,00HTABLE13: DB00H,00H,00H,00H,00H,00H,00H,18H,00H,00H,10H,00H,00H,10H,00H,00HDB10H,00H,00H,10H,00H,00H,10H,0CH,3FH,0FFH,0FEH,00H,10H,00H,00H,18 HDB00H,00H,18H,00H,00H,34H,00H,00H,34H,00H,00H,22H,00H,00H,22H,00HDB

18、00H,41H,00H,00H,0C1H,80H,00H,80H,0C0H,01H,00H,60H,02H,00H,38H,0C HDB 00H,1CH,30H,00H,08H,00H,00H,00HTABLE14: DB00H,00H,00H,00H,00H,00H,04H,20H,60H,02H,10H,40H,03H,18H,0C0H,01HDB18H,80H,01H,11H,00H,10H,02H,0CH,1FH,0FDH,0FEH,10H,00H,18H,30H,00 HDB0A0H,27H,0FFH,0C0H,00H,03H,00H,00H,04H,00H,00H,18H,00H,

19、00H,18H,18HDB3FH,0FFH,0E0H,00H,18H,00H,00H,18H,00H,00H,18H,00H,00H,18H,00H,00 HDB 0F8H,00H,00H,30H,00H,00H,00H,00HSTART100:MOV 20H, #00HMOV 21H, #00HMOV50H,20HLCALL DELAY200MMOV R5,#08HMOV R6,#90HMOV R7,#2MOV R1,#0JNB P1.7,PRINT6032LJMP START1PRINT6032:MOV A,20HJB ACC.0,PRINT512CLR P1.2PRINT502:LCAL

20、L PRINTLINE2MOV R7,#33HDJNZ R5,PRINT502NOPSETB P1.2LCALL DELAY200MMOV R5,#8CLR P1.2PRINT512:LCALL PRINTLINE2MOV R7,#33HDJNZ R5,PRINT512NOPSETB P1.2LCALL DELAY200MMOV R5,#7CLR P1.2PRINT522: LCALL PRINTLINE2MOV R7,#33HDJNZ R5,PRINT522NOPSETB P1.2LCALL DELAY200MLJMP START1;60msDELAY200M: MOV R6, #40DEL

21、12:MOV R7, #250NOPDJNZ R7, DEL22DJNZ R6, DEL12RETWAIT2:CLR AMOV C,P1.1RLC AMOV 41H,AMOV 50H,AXRL A,40HJZ WAIT2MOV 40H,41HMOV 50H,41HRETPRINTLINE2: NOPJNB P1.0,PRINTLINE2MOV R2, #60HMOV R3,#00HCLR AMOV C,P1.1RLC AMOV 40H,AMOV50H,40HLCALL WAITPRINT3002: MOV DPTR,#TABLE21LCALL PRINT12MOV DPTR,#TABLE22L

22、CALL PRINT22MOV DPTR,#TABLE23LCALL PRINT32MOV DPTR,#TABLE24LCALL PRINT42INC R3MOV A,R3CJNE A,#8,PRINT3002MOV R3,#0INC R1DEC R7MOV A,R2JNZ PRINT3002NOPRET.專業(yè) .專注 .MOV 50H,43HPRINT12:MOV A,R3.專業(yè) .專注 .JNZ PRINT4002MOV A, R1MOVC A, A+DPTRMOV 43H,APRINT4002:MOV A,43HJNB ACC.7, PRINT1112CLR P1.3LCALL WAIT

23、SETB P1.3LJMP PRINT3112PRINT1112:LCALL WAITPRINT3112:MOV A,43HRL AMOV 43H,ARETPRINT22:DEC R2MOV A,R3JNZ PRINT4012MOV A,R1MOVC A,A+DPTRMOV 44H,APRINT4012:MOV A,44HJNB ACC.7,PRINT112CLR P1.4LCALL WAITSETB P1.4LJMP PRINT3122PRINT112:LCALL WAITPRINT3122: MOV A,44HRL AMOV 44H,AMOV 50H,44HRETPRINT32:DEC R

24、2MOV A,R3JNZ PRINT4022MOV A,R1MOVC A,A+DPTRMOV 45H,APRINT4022:MOV A,45HJNB ACC.7,PRINT212CLR P1.5LCALL WAITSETB P1.5LJMP PRINT3132PRINT212: LCALL WAITPRINT3132:MOV A,45HRL AMOV 45H,AMOV 50H,45HRETPRINT42:DEC R2MOV A,R3JNZ PRINT4032MOV A,R1.專業(yè) .專注 .MOVC A,A+DPTRMOV 46H,APRINT4032:MOV A,46HJNB ACC.7,P

25、RINTEND2CLR P1.6LCALL WAITSETB P1.6LJMP PRINT3142PRINTEND2:LCALL WAITPRINT3142:MOV A,46HRL AMOV 46H,AMOV 50H,46HDEC R2INC R7.專業(yè) .專注 .RETTABLE23: DB00H,00H,00H,00H,00H,00H,10H,00H,00H,0CH,00H,78H,04H,1FH,80H,04HDB10H,00H,00H,90H,00H,01H,10H,00H,21H,10H,00H,32H,10H,0CH,12H,1FHDB0F0H,12H,10H,40H,04H,10H,40H,04H,10H,40H,04H,30H,40H,08H,30H,40HDB78H,20H,40H,18H,20H,40H,18H,60H,40H,18H,40H,40H,18H,80H,40H,19HDB 00H,40H,02H,00H,40H,00H,00H,00HTABLE24: DB00H,00H,00H,00H,00H,00H,03H,86H,00H,01H,06H,00H,01H,0CH,00H,31HDB08H,08H,31H,0FH,