8051 Program – sine wave

; sine wave generation
; standard 8051
; 8-bt DAC interfaced on P1
; table value should be calculated based on DAC
; sample count should be adjusted for requirement
	ORG 0H
	PORT EQU P1
	SINESAMPLECOUNT EQU 13
MAIN:
	LCALL SINEWAVE
	SJMP MAIN
SINEWAVE:
	MOV DPTR, #SINETABLE
	MOV R2, #SINESAMPLECOUNT
cycle:	CLR A
	MOVC A, @A+DPTR
	MOV PORT, A
	INC DPTR
	DJNZ R2, cycle
	RET
	ORG 300H
SINETABLE:
	DB 128, 192, 238, 255, 238, 192
	DB 128, 64, 17, 0, 17, 64, 128
	END

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List of topics: 8051

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