hardik.patel
Member level 5
Need "C" language code from this assembley language for this same circuit diagram
Hi all experts,
nowdays i m working with led dot matrix display using 8051. in which what i want to do is....i want to transmit a string of character by serial UART and display that received string on led dotmatrix display. i had one circuit and a code which is 100% ok but problem is ...it is in assembley language .so please any one here who can help me to convert it in a 'C' language??
(Atleast, if any1 can give me suggest a code & circuit related to display on 8 or more module of (8x8 or 5x7 or 8x10) dot matrix display of any moving character..than i can able to attach it with a serial function.)
Even if any1 had their own circuit diagram or code ..please its also help me lot.
here i am sending you my (.asm) code for your reference and circuit also.
Thanx to all in advance.
- - - Updated - - -
Even i can give u a proteous project for ur reference....if any1 want it.
Hi all experts,
nowdays i m working with led dot matrix display using 8051. in which what i want to do is....i want to transmit a string of character by serial UART and display that received string on led dotmatrix display. i had one circuit and a code which is 100% ok but problem is ...it is in assembley language .so please any one here who can help me to convert it in a 'C' language??
(Atleast, if any1 can give me suggest a code & circuit related to display on 8 or more module of (8x8 or 5x7 or 8x10) dot matrix display of any moving character..than i can able to attach it with a serial function.)
Even if any1 had their own circuit diagram or code ..please its also help me lot.
here i am sending you my (.asm) code for your reference and circuit also.
Thanx to all in advance.
Code:
;Cascadable 8 char dot matrix display
;written by zuisti (shiftregs: 5 x hc595)
CommonCathode equ 1 ;for Proteus simulation, else common anode and
;CommonCathode equ 0 ;in the reality high current drivers needed
DSEG
CCount DATA 20H ;counter for received chars
FPos DATA 21H ;First Pos in the received string
NPos DATA 22H ;Next module's first Pos (last pos + 1 here)
c0 DATA 23H ;for first char (0) storage
c1 DATA 24H ;char 1
c2 DATA 25H ;char 2
c3 DATA 26H ;char 3
c4 DATA 27H ;char 4
c5 DATA 28H ;char 5
c6 DATA 29H ;char 6
c7 DATA 2AH ;char 7
CSEG
ORG 0000H
;89c2051 HW inic (timers, Usart)
MOV SP,#70H
MOV IE,#90H ;enable serial IT
MOV IP,#10H ;serial IT high prioritat
MOV SCON,#50H ;USART mode 1
MOV TMOD,#20H ;Timer 1 Mode 2, no Timer 2
MOV PCON,#80H ;SMOD = 0, no divide /2
MOV TH1,#0F4H ;9600 baud with 22,1184 MHz clock
SETB TR1 ;start Timer 1
CLR TI ;clear transmit IT flag
ajmp DisplayInic
RetiR:
reti ;restore HW IT system
ORG 0023H
;Serial Interrupt Vector
SerIN:
; PUSH ACC
; PUSH PSW
; PUSH B ;it is a pseudo-IT_routine, no save
MOV A,SBUF ;get the received char
clr C
SUBB A,#20H ;a displayable char is min. 20H (space)
jnc Ser0
CJNE A,#(0DH-20H),SerEnd ;press Enter to DisplayInic
DisplayInic:
ORL P1,#07H ;swich off all lines
; read the position switch state to determine the module's display position
; in the received string (from-to: 0...7, 8...15, 16...23 and so on)
; max 16 (0 ... 15) 8_char_modules
MOV A,P3 ;get position switch state (P3.2 ... P3.5)
ANL A,#111100B ;only the switch inputs (states * 4)
rl A ;states * 8
MOV FPos,A ;First pos for this modul
add A,#8
MOV NPos,A ;Next modul's first Pos (last pos + 1 here)
clr A
MOV c0,A ;char 0 cleared (0 + 20h = space)
MOV c1,A
MOV c2,A
MOV c3,A
MOV c4,A
MOV c5,A
MOV c6,A
MOV c7,A
dec A
MOV CCount,A ;inic FFH, after first incr: 0
AJMP SerEnd
Ser0:
inc CCount ;incr the received character counter
cjne A,#61H,Ser1 ;compare the char with 61H (81h-20h)
Ser1:
jc Ser2 ;if C (char <= 80h), good
mov A,#("?"-020H) ;below 60(80)h subst with a "?"
Ser2:
mov B,A ;save the char
mov A,CCount
cjne A,NPos,Ser3 ;compare the counter with NPos (NextPos)
Ser3: cpl C ;C = not C
jc SerEnd ;if C, not for this module
subb A,FPos ; Counter >= FirstPos ?
jc SerEnd ; if C, not for this module
add a,#c0 ;c0 is the place of the char 0 (first)
mov R0,A ;for indirect storing to R2 ... R7
mov @R0,B ;store the char
SerEnd:
CLR RI ;clear receive IT flag
; POP B
; POP PSW
; POP ACC
; RETI
; the SerIn routine doesn't return here, it continues with a new display loop
MOV SP,#70H ;to this, first restore (clear) SP
acall RetiR ;then signalize IT end (call a reti instr. only)
CLR P1.6 ;reset clock and store bits
CLR P1.5 ;to setup for positive pulses
jc DisplayLoop ;C is set (1) here if the display not changed
ORL P1,#07H ;switch off all lines for the changed line out
DisplayLoop:
MOV B,#7 ;7 lines
LineLoop:
mov R1,#c0 ;the first char is in c0 (sum 8 chars)
dec B ;the lines are numbered as 6...0
CharLoop:
mov A,@R1 ;indirect get the next char (from c0 ... c7)
; get the actual line pattern of the char in A from table BITMAP
RL A ;calculate the DPTR for access to the table
RL A
RL A ; x 8 (8 bytes/char)
MOV DPH,A ;temporaly save this
ANL A,#11111000B ;get the highest (was lowest!) 5 bits only
;to calculate the offset in BITMAP
ADD A,#LOW BITMAP ;assume the address of the BITMAP (Carry !!)
MOV DPL,A ;DPL is ready
MOV A,DPH ;restore the shifted char value
ANL A,#00000111B ;now the 3 lowest (was highest!) bits remain
ADDC A,#HIGH BITMAP ;add to high BITMAP with C to compute DPH
MOV DPH,A ;DTPR is pointing now to the char's first byte
mov A,B ;set the additional offset to line no
MOVC A,@A+DPTR ;get the pattern
;the pattern is clocked out to the 5(*8) stage shift reg
;in A the displayed bits are 4 ... 0 only (shifted out in this order)
if CommonCathode
cpl A ;the LED anode expected 1 to switch on
endif
MOV C,ACC.4 ;move A.4 to Carry
MOV P1.7,C ;out C to Data pin
SETB P1.6 ;generate a positive clock pulse
CLR P1.6 ;end of pulse
MOV C,ACC.3 ;A.3
MOV P1.7,C
SETB P1.6
CLR P1.6
MOV C,ACC.2 ;A.2
MOV P1.7,C
SETB P1.6
CLR P1.6
MOV C,ACC.1 ;A.1
MOV P1.7,C
SETB P1.6
CLR P1.6
MOV C,ACC.0 ;A.0
MOV P1.7,C
SETB P1.6
CLR P1.6
inc R1 ;next reg to ind. addressing of a char
cjne R1,#(c7+1),CharLoop ;but max. c7 !!
MOV A,B ;the whole line is shifted out, line no to A
ANL P1,#0F8H ;to prepare the line decoder (138) outputs
ORL P1,A ;to switch this line on
SETB P1.5 ;store shiftregs to output buffers
CLR P1.5 ;the buffers remain unchanged yet
clr A ;a small time delay for displaying the line
D1: DJNZ ACC,D1
D2: DJNZ ACC,D2
;D3: DJNZ ACC,D3
;D4: DJNZ ACC,D4
inc B ;set B back for djnz
djnz B,LineLoop ;go to next line shift out (7...1)
AJMP DisplayLoop ;again
BITMAP:
;7 lines/char = 7 bytes (and a 0 byte for easy computing)
;first byte: pattern for line 0, second byte for line 1 ....
;the lowest 5 bits in a byte are displayed as a line of char (0 = on)
;sum 60H characters, the lenght of the table is 8 x 60H = 300H !!
;subtracted 20H in SerIN routine, chars below 80H substituted with a "?"
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,00H ;Space
DB 0FBH,0FBH,0FBH,0FBH,0FBH,0FFH,0FBH,00H ;!
DB 0F5H,0F5H,0F5H,0FFH,0FFH,0FFH,0FFH,00H ;"
DB 0F5H,0F5H,0E0H,0F5H,0E0H,0F5H,0F5H,00H ;#
DB 0FBH,0F0H,0EBH,0F1H,0FAH,0E1H,0FBH,00H ;$
DB 0E3H,0EAH,0E5H,0FBH,0F4H,0EAH,0F8H,00H ;%
DB 0F7H,0EBH,0EBH,0F7H,0EAH,0EDH,0F2H,00H ;&
DB 0F9H,0F9H,0FDH,0FBH,0FFH,0FFH,0FFH,00H ;'
DB 0FDH,0FBH,0F7H,0F7H,0F7H,0FBH,0FDH,00H ;(
DB 0F7H,0FBH,0FDH,0FDH,0FDH,0FBH,0F7H,00H ;)
DB 0FBH,0EAH,0F1H,0FBH,0F1H,0EAH,0FBH,00H ;*
DB 0FFH,0FBH,0FBH,0E0H,0FBH,0FBH,0FFH,00H ;+
DB 0FFH,0FFH,0FFH,0F3H,0F3H,0FBH,0F7H,00H ;,
DB 0FFH,0FFH,0FFH,0F1H,0FFH,0FFH,0FFH,00H ;-
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0F3H,0F3H,00H ;.
DB 0FFH,0FEH,0FDH,0FBH,0F7H,0EFH,0FFH,00H ;/
DB 0F1H,0EEH,0ECH,0EAH,0E6H,0EEH,0F1H,00H ;0
DB 0FBH,0F3H,0FBH,0FBH,0FBH,0FBH,0F1H,00H ;1
DB 0F1H,0EEH,0FEH,0F1H,0EFH,0EFH,0E0H,00H ;2
DB 0F1H,0EEH,0FEH,0F9H,0FEH,0EEH,0F1H,00H ;3
DB 0FDH,0F9H,0F5H,0EDH,0E0H,0FDH,0FDH,00H ;4
DB 0E0H,0EFH,0E1H,0FEH,0FEH,0FEH,0E1H,00H ;5
DB 0F9H,0F7H,0EFH,0E1H,0EEH,0EEH,0F1H,00H ;6
DB 0E0H,0FEH,0FDH,0FBH,0F7H,0F7H,0F7H,00H ;7
DB 0F1H,0EEH,0EEH,0F1H,0EEH,0EEH,0F1H,00H ;8
DB 0F1H,0EEH,0EEH,0F0H,0FEH,0FDH,0F3H,00H ;9
DB 0FFH,0F3H,0F3H,0FFH,0F3H,0F3H,0FFH,00H ;:
DB 0F3H,0FBH,0F3H,0F3H,0FFH,0F3H,0F3H,00H ;;
DB 0FDH,0FBH,0F7H,0EFH,0F7H,0FBH,0FDH,00H ;<
DB 0FFH,0FFH,0F1H,0FFH,0F1H,0FFH,0FFH,00H ;=
DB 0F7H,0FBH,0FDH,0FEH,0FDH,0FBH,0F7H,00H ;>
DB 0F1H,0EEH,0FEH,0FDH,0FBH,0FFH,0FBH,00H ;?
DB 0F1H,0EEH,0FEH,0F2H,0EAH,0EAH,0F1H,00H ;@
DB 0FBH,0F5H,0EEH,0EEH,0E0H,0EEH,0EEH,00H ;A
DB 0E1H,0F6H,0F6H,0F1H,0F6H,0F6H,0E1H,00H ;B
DB 0F1H,0EEH,0EFH,0EFH,0EFH,0EEH,0F1H,00H ;C
DB 0E1H,0F6H,0F6H,0F6H,0F6H,0F6H,0E1H,00H ;D
DB 0E0H,0EFH,0EFH,0E3H,0EFH,0EFH,0E0H,00H ;E
DB 0E0H,0EFH,0EFH,0E3H,0EFH,0EFH,0EFH,00H ;F
DB 0F1H,0EEH,0EFH,0E8H,0EEH,0EEH,0F1H,00H ;G
DB 0EEH,0EEH,0EEH,0E0H,0EEH,0EEH,0EEH,00H ;H
DB 0F1H,0FBH,0FBH,0FBH,0FBH,0FBH,0F1H,00H ;I
DB 0F8H,0FDH,0FDH,0FDH,0FDH,0FDH,0F3H,00H ;J
DB 0EEH,0EDH,0EBH,0E7H,0EBH,0EDH,0EEH,00H ;K
DB 0EFH,0EFH,0EFH,0EFH,0EFH,0EFH,0E0H,00H ;L
DB 0EEH,0E4H,0EAH,0EAH,0EEH,0EEH,0EEH,00H ;M
DB 0EEH,0E6H,0EAH,0ECH,0EEH,0EEH,0EEH,00H ;N
DB 0F1H,0EEH,0EEH,0EEH,0EEH,0EEH,0F1H,00H ;O
DB 0E1H,0EEH,0EEH,0E1H,0EFH,0EFH,0EFH,00H ;P
DB 0F1H,0EEH,0EEH,0EEH,0EAH,0EDH,0F2H,00H ;Q
DB 0E1H,0EEH,0EEH,0E1H,0EBH,0EDH,0EEH,00H ;R
DB 0F1H,0EEH,0EFH,0F1H,0FEH,0EEH,0F1H,00H ;S
DB 0E0H,0FBH,0FBH,0FBH,0FBH,0FBH,0FBH,00H ;T
DB 0EEH,0EEH,0EEH,0EEH,0EEH,0EEH,0F1H,00H ;U
DB 0EEH,0EEH,0EEH,0F5H,0F5H,0FBH,0FBH,00H ;V
DB 0EEH,0EEH,0EEH,0EAH,0EAH,0E4H,0EEH,00H ;W
DB 0EEH,0EEH,0F5H,0FBH,0F5H,0EEH,0EEH,00H ;X
DB 0EEH,0EEH,0F5H,0FBH,0FBH,0FBH,0FBH,00H ;Y
DB 0E0H,0FEH,0FDH,0FBH,0F7H,0EFH,0E0H,00H ;Z
DB 0F1H,0F7H,0F7H,0F7H,0F7H,0F7H,0F1H,00H ;[
DB 0FFH,0EFH,0F7H,0FBH,0FDH,0FEH,0FFH,00H ;\
DB 0F1H,0FDH,0FDH,0FDH,0FDH,0FDH,0F1H,00H ;[
DB 0FBH,0F5H,0EEH,0FFH,0FFH,0FFH,0FFH,00H ;^
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0E0H,00H ;_
DB 0F3H,0F3H,0F7H,0FBH,0FFH,0FFH,0FFH,00H ;'
DB 0FFH,0FFH,0F1H,0FEH,0F0H,0EEH,0F1H,00H ;a
DB 0EFH,0EFH,0E9H,0E6H,0EEH,0E6H,0E9H,00H ;b
DB 0FFH,0FFH,0F8H,0F7H,0F7H,0F7H,0F8H,00H ;c
DB 0FEH,0FEH,0F2H,0ECH,0EEH,0ECH,0F2H,00H ;d
DB 0FFH,0FFH,0F1H,0EEH,0E0H,0EFH,0F1H,00H ;e
DB 0F9H,0F6H,0F7H,0E1H,0F7H,0F7H,0F7H,00H ;f
DB 0FFH,0FFH,0F0H,0EEH,0F0H,0FEH,0F1H,00H ;g
DB 0EFH,0EFH,0E9H,0E6H,0EEH,0EEH,0EEH,00H ;h
DB 0FBH,0FFH,0F3H,0FBH,0FBH,0FBH,0F1H,00H ;i
DB 0FDH,0FFH,0F9H,0FDH,0FDH,0FDH,0F3H,00H ;j
DB 0F7H,0F7H,0F6H,0F5H,0F3H,0F5H,0F6H,00H ;k
DB 0F3H,0FBH,0FBH,0FBH,0FBH,0FBH,0F1H,00H ;l
DB 0FFH,0FFH,0E5H,0EAH,0EAH,0EAH,0EAH,00H ;m
DB 0FFH,0FFH,0E9H,0E6H,0EEH,0EEH,0EEH,00H ;n
DB 0FFH,0FFH,0F1H,0EEH,0EEH,0EEH,0F1H,00H ;o
DB 0FFH,0FFH,0E1H,0EEH,0E1H,0EFH,0EFH,00H ;p
DB 0FFH,0FFH,0F0H,0EEH,0F0H,0FEH,0FEH,00H ;q
DB 0FFH,0FFH,0E9H,0E6H,0EFH,0EFH,0EFH,00H ;r
DB 0FFH,0FFH,0F0H,0EFH,0F1H,0FEH,0E1H,00H ;s
DB 0FBH,0FBH,0F0H,0FBH,0FBH,0FBH,0FCH,00H ;t
DB 0FFH,0FFH,0EEH,0EEH,0EEH,0ECH,0F2H,00H ;u
DB 0FFH,0FFH,0EEH,0EEH,0EEH,0F5H,0FBH,00H ;v
DB 0FFH,0FFH,0EEH,0EEH,0EAH,0EAH,0F4H,00H ;w
DB 0FFH,0FFH,0EEH,0F5H,0FBH,0F5H,0EEH,00H ;x
DB 0FFH,0FFH,0EEH,0F5H,0FBH,0FBH,0F3H,00H ;y
DB 0FFH,0FFH,0E0H,0FDH,0FBH,0F7H,0E0H,00H ;z
DB 0F9H,0F7H,0F7H,0E7H,0F7H,0F7H,0F9H,00H ;{
DB 0FBH,0FBH,0FBH,0FFH,0FBH,0FBH,0FBH,00H ;|
DB 0F3H,0FDH,0FDH,0FCH,0FDH,0FDH,0F3H,00H ;}
DB 0F5H,0EAH,0FFH,0FFH,0FFH,0FFH,0FFH,00H ;~
DB 0F5H,0EAH,0F5H,0EAH,0F5H,0EAH,0F5H ;DEL
END- - - Updated - - -
Even i can give u a proteous project for ur reference....if any1 want it.
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