今天用一個(gè)DGUS II的屏模擬了一下鍵盤加密（類似于網(wǎng)銀加密鍵盤），很簡(jiǎn)單也很實(shí)用。具體視頻和說(shuō)明請(qǐng)參照http://bbs.elecfans.com/user/3035995/articles/。來(lái)看下效果吧~

圖1：第一次錄入

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圖2：第二次錄入

圖3：第三次錄入

代碼如下：

ORG?????? 1000H

GOTO??? START

NOP

NOP

NOP

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ORG?????? 1080H

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START:

?????? LDWR??? R0,5000H

??????? LDADR STRING

??????? MOVC R100,64

??????? MOVXR????? R100,0,32

??????? LDWR? R20,5AA5H

??????? LDWR? R22,0000H;上電禁用掉數(shù)據(jù)錄入控件

??????? LDWR? R24,0100H

??????? LDWR? R26,0000H

??????? LDWR? R0,00B0H

??????? MOVXR????? R20,0,4

???????

MAIN:

?????? CALL????? ANYA_CHUFA

??????? CALL??? CK_LURU

??????? CALL??? CK_CHANGE

??????? GOTO? MAIN

??????? ;====================

??????? ;====================

ANYA_CHUFA:

?????? LDWR??? R0,1F00H

??????? MOVXR????? R10,1,1

??????? IJNE???? R11,0,1

??????? RET

??????? LDWR? R0,00B0H

LOOP:??? MOVXR R10,1,1

?????? IJNE?????? R10,0,LOOP? ;開(kāi)啟本條指令

??????? IJNE???? R11,0,LOOP

??????? LDWR? R20,5AA5H

??????? LDWR? R22,0000H

??????? LDWR? R24,0100H

??????? LDWR? R26,0001H

??????? LDWR? R0,00B0H

??????? MOVXR????? R20,0,4

??????

LOOP1:? MOVXR R10,1,1

?????? IJNE?????? R10,0,LOOP1?????? ;模擬觸發(fā)本條指令?????

??????? IJNE???? R11,0,LOOP1?

??????? LDWR? R20,5AA5H

??????? LDWR? R22,0004H

??????? LDWR? R24,100

??????? LDWR? R26,100

??????? LDWR? R0,00D4H

??????? MOVXR????? R20,0,4

??????

??????? LDWR? R10,0

??????? LDWR? R0,1F00H

??????? MOVXR????? R10,0,1

??????? RET

;====================================

;====================================

CK_LURU:

?????? LDWR??? R0,1F01H

??????? MOVXR????? R10,1,1

??????? IJNE???? R11,0,1

??????? RET

??????? LDWR? R10,1

??????? LDWR? R0,1F02H

??????? MOVXR????? R10,0,1

??????? RET

;============================

CK_CHANGE:

?????? LDWR??? R0,1F02H;檢查標(biāo)志位是不是1

??????? MOVXR????? R10,1,1

??????? IJNE???? R11,0,1

??????? RET

?????? LDWR??? R0,1F01H;在標(biāo)志位是1的情況下檢查是不是在錄入狀態(tài)

??????? MOVXR????? R10,1,1

??????? IJNE???? R11,1,1

??????? RET;錄入狀態(tài)直接返回

??????? LDWR? R0,1F02H;標(biāo)志位清零

??????? LDWR? R10,0

??????? MOVXR????? R10,0,1

??????? LDWR? R0,5011H

??????? MOVXR????? R10,1,1

??????? DEC???? R10,1,1

??????? IJNE???? R11,1,1

??????? LDWR? R10,12

??????? MOVXR????? R10,0,1

??????? LDWR? R0,5000H;錄入過(guò)程中調(diào)用的界面更改

??????? MOVXR????? R10,1,32

??????? LDWR? R0,00B4H

??????? MOVXR????? R10,0,32??

??????? LDWR? R10,5AA5H;更改該條觸控指令

??????? LDWR? R12,0000H

??????? LDWR? R14,0100H

??????? LDWR? R16,0003H

??????? LDWR? R0,00B0H

??????? MOVXR????? R10,0,4

;??????? LDWR R0,00B0H

LOOP3:? MOVXR R10,1,1

?????? IJNE?????? R10,0,LOOP3?

??????? IJNE???? R11,0,LOOP3???

??????? LDWR? R20,5AA5H

??????? LDWR? R22,0000H

??????? LDWR? R24,0100H

??????? LDWR? R26,0000H;禁用該條指令

??????? LDWR? R0,00B0H

??????? MOVXR????? R20,0,4???

??

CK_CHANGE_RET:

?????? NOP

??????? RET???????

;=======================================

STRING:

DB? 00H,00H,00H,00H,00H,00H,01H,03H,00H,B5H,FFH,00H,FFH,00H,FDH,00H,FEH,20H,00H,01H,08H,00H,01H,6AH,01H,5DH,00H,00H,00H,10H,00H,01H,FEH,01H,00H,0CH,00H,62H,01H,4CH,01H,7EH,02H,A5H,00H,62H,01H,4CH,FEH,00H,00H,00H,00H,00H,00H,00H,00H,00H,5AH,1FH,01H,00H,01H,00H

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