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HT48R50A的 AT24C02 IIC 示例程序

HT48R50A的 AT24C02 IIC 示例程序

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COUNTER                 DB      ?
DATA_REGISTER           DB      ?
ADDRESS_REGISTER        DB      ?
SEQ_COUNTER             DB      ?
;--------------------------------------------------------------------
CODE                    .SECTION        AT 00H          ’CODE’
                        ORG     00H
                        JMP     START
START:
                        SET     PBC
                        SET     PB

                        CALL    LCD_RESET

                        CALL    MESSAGE_01
                        CALL    KEY_GET
;--------------------------------------------------------------------
SELECT_12:
                        CALL    MESSAGE_02
                         MOV      A,4FH
                        CALL    LCD_CURSOR
AGAIN_12:
                        CALL    KEY_GET
                         MOV      A,KEY_DATA
                        SUB     A,0DH
                        SZ      ACC
                        JMP     COMPARE_12_1
                        JMP     SELECT_34
COMPARE_12_1:
                         MOV      A,KEY_DATA
                        SUB     A,01H
                        SZ      ACC
                        JMP     COMPARE_12_2
                        JMP     FUNCTION_1
COMPARE_12_2:
                         MOV      A,KEY_DATA
                        SUB     A,02H
                        SZ      ACC
                        JMP     AGAIN_12
                        JMP     FUNCTION_2
                        RET
;--------------------------------------------------------------------
SELECT_34:
                        CALL    MESSAGE_03
                         MOV      A,4FH
                        CALL    LCD_CURSOR
AGAIN_34:
                        CALL    KEY_GET
                         MOV      A,KEY_DATA
                        SUB     A,0CH
                        SZ      ACC
                        JMP     COMPARE_34_D
                        JMP     SELECT_12

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