STC micro STC8A8K64D4 Series - Page 616

STC8A8K64D4 Series Manual
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MOV R0,#0
MOV R1,#0
DELAY1:
NOP
NOP
NOP
NOP
DJNZ R1,DELAY1
DJNZ R0,DELAY1
RET
MAIN:
MOV SP, #5FH
MOV P0M0, #00H
MOV P0M1, #00H
MOV P1M0, #00H
MOV P1M1, #00H
MOV P2M0, #00H
MOV P2M1, #00H
MOV P3M0, #00H
MOV P3M1, #00H
MOV P4M0, #00H
MOV P4M1, #00H
MOV P5M0, #00H
MOV P5M1, #00H
MOV P_SW2,#80H
MOV A,#11100000B ;Set the I2C module as master mode
MOV DPTR,#I2CCFG
MOVX @DPTR,A
MOV A,#00000000B
MOV DPTR,#I2CMSST
MOVX @DPTR,A
SETB EA
CALL START ;Send start command
MOV A,#0A0H
CALL SENDDATA ;Send device address + write command
CALL RECVACK
MOV A,#000H ;Send storage address high byte
CALL SENDDATA
CALL RECVACK
MOV A,#000H ;Send storage address low byte
CALL SENDDATA
CALL RECVACK
MOV A,#12H ;Write test data 1
CALL SENDDATA
CALL RECVACK
MOV A,#78H ;Write test data 2
CALL SENDDATA
CALL RECVACK
CALL STOP ;Send stop command
CALL DELAY ;Waiting for the device to write data
CALL START ;Send start command
MOV A,#0A0H ;Send device address + write command