Temperature-Controlled-Fan-Using-8051-Microcontroller/main.asm at main · palotfathima/Temperature-Controlled-Fan-Using-8051-Microcontroller · GitHub

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$NOMOD51
$INCLUDE (8051.MCU)


 org   0000h

SETB P1.0
CPL P1.0
Start:

	 SETB P3.3
	 CLR P3.4
	 SETB P3.5
	 SETB P3.4

	 stay: JB P3.5, stay
	 CLR P3.3

	 SETB P3.7


	MOV TMOD,#00H

	MOV R1, P0
	MOV A, R1
	MOV B, #3
	MUL AB
	MOV P2,A
	CPL A
	MOV R7, A


	SETB TR0

	CLR P1.1
	LCALL HIGH_DONE
	SETB TR0
	LCALL LOW_DONE
	JMP Start

HIGH_DONE:
	SETB P1.1
	CLR TF0
	MOV TH0, R7
        stay1: JNB TF0, stay1
	CLR TF0
	RET


LOW_DONE:
	CLR P1.1
	MOV A, #0FFH
	CLR C
	SUBB A, R7
	MOV TH0, A
	stay2: JNB TF0, stay2
	CLR TF0
	RET

Loop:
      jmp Loop


      END