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Printing temperature data to dot matrix printer

( Download Assembly File : printer.zip )
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;===================================================
; Print out temperature data each 60 second
; By: Triwiyanto
; www.mytutorialcafe.com
;===================================================
;1.Use temperature sensor LM35 and 
;  convert analog to digital by ADC0804
;2.Time generate by Timer 0 : mode timer 16 bit,
;  with interrupt every0.05 second second
;3.Each 60 second data will print out to Dot matrix printer.
           ;
           dispclr equ 00000001b
           funcset equ 00111000b
           entrmod equ 00000110b
           dispon equ 00001100b
           cursor equ 00001110b
           blink equ 00001101b
           shiftL equ 00011011b
           counter20 equ 60h
           counter60 equ 61h
           minute equ 62h
           hour equ 63h
           minute1 equ 64h
           minute10 equ 65h
           hour1 equ 66h
           hour10 equ 67h
           second equ 68h
           second1 equ 69h
           second10 equ 6ah
           tenP equ 6bh
           oneP equ 6ch
           fractionP equ 6dh
           ten equ 6eh
           one equ 6fh
           fraction equ 50h
           DataADC equ 51h
           Strobe bit p1.4
           Busy bit p1.5
           ;
           org 0h
           sjmp begin
           org 0bh
           ljmp timerinterrupt
           ;
begin:     acall init_lcd 
           acall write1
           acall write2
start:     jb p1.6, start
bounch:    jnb p1.6, bounch
           acall Init_timer
           acall init_lcd
           acall write3
           acall write4
           next: acall adc
           acall convert
           acall scandisplay
           sjmp next
           ;
shift2left:
           mov R7,#37 
again:     mov R1,#shiftL 
           acall write_inst 
           acall delay 
           djnz R7,again
           ; 
           mov R6,#21
again1:    mov R1,#shiftL 
           acall write_inst 
           acall delay 
           djnz R6,again1 
           ret
           ;
Printout:
           call comment_report
           call enter
           call comment_hour
           call PrintDatahour
           call enter
           call comment_Temp
           call PrintData_Temp
           call enter
           call comment_name
           call enter
           call enter
           call enter
           ret
           ;
printchar:
           mov P3,A
           jb busy,$
           setb strobe
           clr strobe
           acall delay
           Setb strobe
           acall delay
           ret
           ;
delay:     mov R7,#100
del1:      mov R6,#100
           DJNZ R6,$
           DJNZ R7,del1
           ret
           ;

comment_report:
           mov dptr,#Text_report
againH:    clr A
           movc a,@a+dptr
           cjne a,#'$',PrintH
           sjmp OutH
PrintH:    call Printchar
           inc dptr
           call delay
           sjmp againH
OutH:      ret
           ;
comment_hour:
           mov dptr,#Text_hour
againJ:    clr A
           movc a,@a+dptr
           cjne a,#'$',PrintJ
           sjmp OutJ
PrintJ:    call Printchar
           inc dptr
           call delay
           sjmp againJ
OutJ:      ret
           ;
comment_Temp:
           mov dptr,#Text_Temp
againT:    clr A
           movc a,@a+dptr
           cjne a,#'$',PrintT
           sjmp OutT
           PrintT: call printchar
           inc dptr
           call delay
           sjmp againT
OutT:      ret
           ;
comment_name:
           mov dptr,#Text_name
againN:    clr A
           movc a,@a+dptr
           cjne a,#'$',PrintN
           sjmp OutN
PrintN:    call printchar
           inc dptr
           call delay
           sjmp againN
OutN:      ret
           ;
PrintData_Temp:
           mov A,tenP
           call printchar
           mov A,oneP
           call printchar 
           call printcoma
           mov A,fractionP
           call printchar
           call space
           call printpoint
           call printCelcius
           ret
           ;
ADC:       mov A,P2
           mov dataadc,a
           ret
           ;
convert:
           mov R1,#0c5h 
           acall write_inst
           mov a,dataadc
           mov dptr,#data_ten 
           movc a,@a+dptr
           MOV R5,A
           Add A,#30h 
           mov R1,A 
           acall write_data
           ;
           mov R1,#0c6h 
           acall write_inst
           mov a,dataadc
           mov dptr,#data_one 
           movc a,@a+dptr
           mov r6,a
           add A,#30h 
           mov R1,A 
           acall write_data
           ;
           mov R1,#0c8h 
           acall write_inst 
           mov a,dataadc
           mov dptr,#data_fraction 
           movc a,@a+dptr
           mov r7,a
           add A,#30h 
           mov R1,A 
           acall write_data 
           ret
           ;
Print_DataConvert:
           call Convert_HextoBCD 
           mov A,ten
           add A,#30h
           call printchar
           mov A,one
           add A,#30h
           call printchar
           mov A,fraction
           add A,#30h
           call printchar
           ret
           ;
;This Subrutine is to convert hex to BCD 
; for example: 125 will be convert to
; hundred = 1, ten =2, one = 5
; to get print out to printer dot matrix
Convert_HextoBCD: 
           mov B,#100 ; 
           DIV AB ; 
           mov ten,A ;
           mov A,B ; 
           mov B,#10 ;
           DIV AB
           mov one,A
           mov fraction,B
           ret
           ;
PrintDatahour:
           mov A,hour10
           call printchar
           mov A,hour1
           call Printchar
           call Printdoubledot
           mov A,minute10
           call printchar
           mov A,minute1
           call printchar
           call Printdoubledot
           mov A,second10
           call printchar
           mov A,second1 
           call printchar
           call space
           call space
           ret
           ;
scandisplay:
           mov r1,#08bh
           acall write_inst
           mov r1,second1 
           acall write_data
           ;
           mov r1,#08ah
           acall write_inst
           mov r1,second10
           acall write_data
           ;
           mov r1,#088h
           acall write_inst
           mov r1,minute1 
           acall write_data
           ;
           mov r1,#087h
           acall write_inst
           mov r1,minute10
           acall write_data
           ;
           mov r1,#085h
           acall write_inst
           mov r1,hour1
           acall write_data
           ;
           mov r1,#084h
           acall write_inst
           mov r1,hour10
           acall write_data
           sjmp scandisplay
           ;
timerinterrupt:
           mov tl0,#0b0h
           mov th0,#03ch
           djnz counter20,endinterrupt
           mov counter20,#20
           acall hourdigital
           endinterrupt:
           reti
           ;
hourdigital:
           inc second
           mov a,#60
           cjne a,second,updatedisplay
           acall printout
           mov second,#0
           ;
oneminute:
           inc minute
           mov A,#60
           cjne A,minute,updatedisplay
           mov minute,#0
           ;
onehour:
           inc hour
           mov A,#24
           cjne A,hour,updatedisplay
           mov hour,#0
           ;
updatedisplay:
           mov a,second
           mov b,#10
           div ab
           mov second1,b
           mov second10,a
           mov a,minute
           mov b,#10
           div ab
           mov minute1,b
           mov minute10,a
           mov a,hour
           mov b,#10
           div ab
           mov hour1,b
           mov hour10,a
           ;
           mov a,#30h
           add a,second1
           mov second1,a
           ;
           mov a,#30h
           add a,second10
           mov second10,a
           ; 
           mov a,#30h
           add a,minute1
           mov minute1,a
           ;
           mov a,#30h
           add a,minute10
           mov minute10,a
           ;
           mov a,#30h
           add a,hour1
           mov hour1,a
           ;
           mov a,#30h
           add a,hour10
           mov hour10,a
           ret 
           ;
Init_Timer:
           mov counter20,#20
           mov counter60,#60
           mov second,#0
           mov hour,#0
           mov minute,#0
           mov TMOD,#00000001b
           mov tl0,#0b0h
           mov th0,#03ch
           setb ET0
           setb EA
           setb TR0 
           ret
           ;
Write_inst:
           Clr P1.0 
           Mov P0,R1 
           Setb P1.1 
           Acall delay 
           Clr P1.1 
           ret
           ;
Write_data:
           Setb P1.0 
           Mov P0,R1 
           Setb P1.1 
           Acall delay 
           Clr p1.1 
           ret
           ;
Printchar1:
           mov P2,A
           jb busy,$
           setb strobe
           clr strobe
           acall delay
           setb strobe
           ret
           ;
init_lcd:
           mov r1,#dispclr
           acall write_inst
           mov r1,#funcset
           acall write_inst
           mov r1,#dispon
           acall write_inst
           mov r1,#entrmod
           acall write_inst
           ret
           ;
Enter:
           mov A,#0dh
           call printchar
           call delay
           mov A,#0ah
           call printchar
           ret
           ;
Space:
           mov A,#' '
           call printchar
           ret
           ;
Printdoubledot:
           mov A,#':'
           call printchar
           ret
           ;
Printcoma:
           mov A,#','
           call printchar
           ret
           ;
Printpoint:
           mov A,#'o'
           call printchar
           ret
           ;
PrintCelcius:
           mov A,#'C'
           call printchar
           ret
           ;
write1:    mov dptr,#comment1 
           mov R3,#37 
           mov R1,#80h 
           acall write_inst
           tls1: clr a 
           movc a,@a+dptr 
           mov R1,A 
           inc dptr 
           acall write_data 
           djnz R3,tls1 
           ret
           ;
write2:    mov dptr,#comment2 
           mov R3,#21 
           mov R1,#0c0h 
           acall write_inst
           tls2: clr a 
           movc a,@a+dptr 
           mov R1,A 
           inc dptr 
           acall write_data 
           djnz R3,tls2 
           ret
           ;
write3:    mov dptr,#comment3
           mov R3,#11 
           mov R1,#0c0h 
           acall write_inst
           tls3: clr a 
           movc a,@a+dptr 
           mov R1,A 
           inc dptr 
           acall write_data 
           djnz R3,tls3
           ret
           ;
write4:    mov dptr,#comment4
           mov r3,#4
           mov r1,#080h
           acall write_inst
           tls4: clr a
           movc a,@a+dptr
           mov r1,a
           inc dptr
           acall write_data
           djnz r3,tls4
           ;
write5:    mov dptr,#comment5
           mov r3,#4
           mov r1,#086h
           acall write_inst
           tls5: clr a
           movc a,@a+dptr
           mov r1,a
           inc dptr
           acall write_data
           djnz r3,tls5
           ret
           ;
comment1: db' Print Temp Data'
comment2: db' Labcomputer '
comment3: db'Temp: , oC'
comment4: db'hour:'
comment5: db': :'
Text_report: db'Temperature Measurement$'
Text_hour: db'hour:$'
Text_Temp: db'Temp:$'
Text_name: db'Labcomputer$'
           ;
data_ten:
           DB 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
           DB 0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1
           DB 1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2
           DB 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3
           DB 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3
           DB 3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4
           DB 4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5
           DB 5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6
           DB 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7
           DB 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
           DB 7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
           DB 8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9
           DB 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,0
           ;
data_one:
           DB 0,0,0,1,1,1,2,2,3,3,3,4,4,5,5,5,6,6,7,7
           DB 7,8,8,9,9,9,0,0,0,1,1,2,2,2,3,3,4,4,4,5
           DB 5,6,6,6,7,7,8,8,8,9,9,0,0,0,1,1,1,2,2,3
           DB 3,3,4,4,5,5,5,6,6,7,7,7,8,8,9,9,9,0,0,0
           DB 1,1,2,2,2,3,3,4,4,4,5,5,6,6,6,7,7,8,8,8
           DB 9,9,0,0,0,1,1,1,2,2,3,3,3,4,4,5,5,5,6,6
           DB 7,7,7,8,8,9,9,9,0,0,0,1,1,2,2,2,3,3,4,4
           DB 4,5,5,6,6,6,7,7,8,8,8,9,9,0,0,0,1,1,1,2
           DB 2,3,3,3,4,4,5,5,5,6,6,7,7,7,8,8,9,9,9,0
           DB 0,0,1,1,2,2,2,3,3,4,4,4,5,5,6,6,6,7,7,8
           DB 8,8,9,9,0,0,0,1,1,1,2,2,3,3,3,4,4,5,5,5
           DB 6,6,7,7,7,8,8,9,9,9,0,0,0,1,1,2,2,2,3,3
           DB 4,4,4,5,5,6,6,6,7,7,8,8,8,9,9,0
           ;
data_fraction:
           DB 0,9,8,8,7,6,5,5,4,3,2,1,1,0,9,8,7,7,6,5
           DB 4,4,3,2,1,0,0,9,8,7,6,6,5,4,3,3,2,1,0,9
           DB 9,8,7,6,5,5,4,3,2,2,1,0,9,8,8,7,6,5,5,4
           DB 3,2,1,1,0,9,8,7,7,6,5,4,4,3,2,1,0,0,9,8
           DB 7,6,6,5,4,3,3,2,1,0,9,9,8,7,6,5,5,4,3,2
           DB 2,1,0,9,8,8,7,6,5,5,4,3,2,1,1,0,9,8,7,7
           DB 6,5,4,4,3,2,1,0,0,9,9,7,6,6,5,4,3,3,2,1
           DB 0,9,9,8,7,6,5,5,4,3,2,2,1,0,9,8,8,7,6,5
           DB 5,4,3,2,1,1,0,9,8,7,7,6,5,4,4,3,2,1,0,0
           DB 9,8,7,6,6,5,4,3,3,2,1,0,9,9,8,7,6,5,5,4
           DB 3,2,2,1,0,9,8,8,7,6,5,5,4,3,2,1,1,0,9,8
           DB 7,7,6,5,4,4,3,2,1,0,0,9,8,7,6,6,5,4,3,3
           DB 2,1,0,9,9,8,7,6,5,5,4,3,2,2,1,0
           end

BACK

Lesson 1:
T o o l
1.1. Programmer
1.2. Edsim 51
1.3. MIDE-51
1.4. ATMEL ISP

Lesson 2:
Input Output
2.1.LED
2.2.Swicht
2.3.7 Segmen
2.4.LCD Character
2.5.ADC
2.6.DAC
2.7.Motor Stepper
2.8.Keypad

Lesson 3:
Timer Counter
3.1.Basic
3.2.Mode 0
3.3.Mode 1
3.4.Mode 2
3.5.Mode 3

Lesson 4:
Serial Comm.
4.1.Basic
4.2.LED
4.3.Rotate LED
4.2 ADC
4.3.LCD

Lesson 5:
Interuption
5.1.Basic
5.2.Timer
5.2.External