Temperature_Controlled_Fan/code.asm at master · AdityaKshettri/Temperature_Controlled_Fan · GitHub

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ORG 0000H
LJMP MAIN

ORG 000BH
LJMP INTERRUPT

ORG 0030H
MAIN:
MOV P0, #0FFH
SETB P1.5
MOV A,#38H
ACALL COMMAND
ACALL DELAY
MOV A,#0EH
ACALL COMMAND
ACALL DELAY
MOV A,#01H
ACALL COMMAND
ACALL DELAY
MOV A,#080H
ACALL COMMAND
ACALL DELAY
LJMP AGAIN1

COMMAND:
MOV P2,A
CLR P3.1
CLR P3.0
SETB P3.2
ACALL DELAY
CLR P3.2
RET

DELAY:
MOV R3,#0FFH
AGAIN : DJNZ R3,AGAIN
RET

AGAIN1:
MOV A,#' '
ACALL LCDWRITE
ACALL DELAY
MOV A,#'M'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'I'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'C'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'R'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'C'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'N'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'T'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'R'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'L'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'L'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'E'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'R'
ACALL LCDWRITE
ACALL DELAY
MOV A,#0C1H
ACALL COMMAND
ACALL DELAY
MOV A,#'P'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'R'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'J'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'E'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'C'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'T'
ACALL LCDWRITE
ACALL DELAY
ACALL DELAY1
MOV A,#01H
ACALL COMMAND
ACALL DELAY
MOV A,#' '
ACALL LCDWRITE
ACALL DELAY
MOV A,#'T'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'E'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'M'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'P'
ACALL LCDWRITE
ACALL DELAY
MOV A,#' '
ACALL LCDWRITE
ACALL DELAY
MOV A,#'C'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'N'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'T'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'R'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'O'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'L'
ACALL LCDWRITE
ACALL DELAY
MOV A,#' '
ACALL LCDWRITE
ACALL DELAY
MOV A,#'F'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'A'
ACALL LCDWRITE
ACALL DELAY
MOV A,#'N'
ACALL LCDWRITE
ACALL DELAY
LJMP AGAIN2

LCDWRITE:
MOV P2,A
SETB P3.1
CLR P3.0
SETB P3.2
ACALL DELAY
CLR P3.2
RET

DELAY1:
MOV R3,#0FFH
HERE1: MOV R5,#0FFH
HERE2: MOV 75H,#02FH
HERE3: DJNZ 75H,HERE3
HERE4: DJNZ R5,HERE2
DJNZ R3,HERE1
RET

AGAIN2:
SETB P3.5
SETB P3.3
CLR P3.4
SETB P3.4
HERE5: JB P3.5,HERE5
CLR P3.3
MOV A,#0C1H
ACALL COMMAND
ACALL DELAY
MOV TMOD,#02H
MOV IE,#82H
MOV R1,P0
MOV A,R1
MOV R4,A
ACALL COMPARE
MOV A,R4
LCALL CONVERSION
LCALL LCDWRITETMP
ACALL DELAY1
LJMP MAIN

COMPARE:
CLR C
CJNE R1,#35,GAIN
GAIN: JNC GAIN1
CLR C
CJNE R1,#25,GAIN2
GAIN2: JNC GAIN3
CLR TR0
LJMP GAIN4
GAIN1: ACALL GREATER
LJMP GAIN4
GAIN3: ACALL LOWER
GAIN4: CLR C
RET

GREATER:
CLR TR0
MOV R2,#0AAH
MOV TH0,#0FFH
SETB TR0
RET

LOWER:
CLR TR0
MOV R2,#0AAH
MOV TH0,#1FH
SETB TR0
RET

CONVERSION:
MOV B,#10
DIV AB
MOV R7,B
MOV B,#10
DIV AB
MOV R6,B
 MOV A,R6
ADD A,#30H
MOV R6,A
MOV A,R7
ADD A,#30H
MOV R7,A
RET

LCDWRITETMP:
MOV A,R6
ACALL LCDWRITE
ACALL DELAY
MOV A,R7
ACALL LCDWRITE
ACALL DELAY
MOV A,#'C'
ACALL LCDWRITE
ACALL DELAY
RET

INTERRUPT:
CPL P1.5
CLR TR0
MOV 76H,R2
HERER: DJNZ 76H,HERER
SETB TR0
CPL P1.5
RETI

END