8051 Program – simple serial transmission

; simple serial transmission
	ORG 0H
	SJMP 30H
	ORG 30H
	MOV TMOD,#20H	;timer 1; mode 2
	MOV TH1,#-3	;-3=FD loaded into TH1 for 9600 baud, 11.0592MHz
	MOV SCON,#50H	;8-bit, 1 stop bit, REN enabled
	SETB TR1	;Start timer 1
AGAIN:	MOV A,#'Y'	;transfer “Y”
	ACALL TRANS
	MOV A,#'E'	;transfer “E”
	ACALL TRANS
	MOV A,#'S'	;transfer “S”
	ACALL TRANS
	SJMP AGAIN
TRANS:	MOV SBUF,A	;load SBUF
HERE:	JNB TI,HERE	;Wait for last bit to transfer
	CLR TI	;get ready for next byte
	RET
	END

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Related topics:
8051 Program - logical operation   |   8051 Program - parity generation   |   8051 Program - polling an io pin   |   8051 Program - port loopback   |   8051 Program - send ascii to port   |   8051 Program - serializing data   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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