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Thank you budhy.
I writed SPI_INIT as you write. I work very good.
after I'm coding WriteByte and ReadByte as :
KHOA:
MOV P2,#0
MOV SCON,#52H
MOV TMOD,#21H
MOV TH1,#-3
MOV TL1,TH1
SETB TR1
MOV ADDH,#0
MOV ADDL,#0
MOV A,#'A'
ACALL SEND_PC
ACALL SPI_INIT
ACALL OUT2HEX...
at89s51 programming print port
Thank you for help me.
i m trying it with your code.. but it doesnt work.
i call function Enable_program but output = 0 (not 01101001)
MAIN:
MOV P2,#0
MOV SCON,#52H
MOV TMOD,#21H
MOV TH1,#-3
MOV TL1,TH1
SETB TR1
MOV A,#66
LCALL SEND_PC
LCALL...
at89s51 programming enable
My Name is Joe, Student in VietNam.
Please Help me!
I have a final Exam in University. Topic "Programming ISP 89S51 using 89c51". It likes "89Sxx In-Circuit Serial Programmer".
I have promblem with "Serial Programming Timing".
I am coding some function. But function...
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