Code for reading flow & generating serial output, Assembly Language

Assignment Help:

Assembly Code for Reading Flow & Generating Serial Output

The timer is timer 1 is set for the baud rate 9600, as the crystal used is of 11.0592 Hz.  Then the timer 1 is started by TR1. The program checks the ASCII switch, flow status pins and the respective flow subroutine starts and in the flow subroutine the overflow status is   checked as well as the MOV B ,#X   where X is the character used to be displayed in PC  is used to stored in the register B.  The subroutines returns and the Serial transmission routine is called for serial transmission. In serial transmission subroutine the status of 79H is checked if found enabled then the value of B is transferred in SBUF and followed by character 'L' to SBUF.

The details assembly code is as below:-

         ; Define value setting for Timer in using Generate Baud Rate in transfer data.     

                    MOV IE,#00000000B

                     MOV TMOD,#00100000B

                     MOV TL1,#0FDH

                     MOV TH1,#0FDH

                ; Define value setting for SCON Register that select mode 1

                     MOV SCON,#01010000B

                     SETB TR1  

 MOV   P3 , #0FFH   ; Define  Port 3  as input port

 START  : MOV A ,P3

 ANL A, #80h   ;  Masking of    BITs except P3.7

 CJNE  A ,#00h ,   OVER       ; TO CHECK THE  ASCII  SWITCH 

               CPL 79H     ;   

               OVER :  MOV  A ,P3

               ANL A, #1Ch   ;  Masking of    BITs FLOW RATE

    ACALL FLOW00     ;  FLOW RATE 0  SUBROUTINE 

    ACALL FLOW01 ;  FLOW RATE 1  SUBROUTINE

    ACALL FLOW02 ;  FLOW RATE 2  SUBROUTINE

    ACALL FLOW03;  FLOW RATE 3 SUBROUTINE

    ACALL FLOW04;  FLOW RATE 4  SUBROUTINE

     ACALL FLOW05;  FLOW RATE 5  SUBROUTINE

     ACALL FLOW06 ;  FLOW RATE 6  SUBROUTINE

     ACALL FLOW07 ;  FLOW RATE 7  SUBROUTINE

     JB   79H , SKIP     ;  CHECK FOR ENABLED OR DISABLED SERIAL COMMUNICATION

     ACALL STXD    ;     SERIAL DATA COMMUNICATION  TX

    SKIP :  SJMP   START 

; FLOW RATE   SUBROUTINES SECTION

FLOW00 :    CJNE  A,#00H ,  NEXT0       ;  FLOW RATE   0

MOV B ,#'0'

NEXT0 : RET

FLOW01:    CJNE  A ,#04H  ,  NEXT1       ; FLOW RATE   1

MOV B ,#'1'

NEXT2  : RET

;  SUBROUTINE FLOW RATE   3

FLOW03:    CJNE  A,#0CH ,  NEXT3       ; FLOW RATE   3

MOV B ,#'3'

NEXT3 :RET

;    SUBROUTINE FLOW RATE   4

FLOW04:    CJNE  A,#10H ,  NEXT4       ; FLOW RATE   4

MOV B ,#'4'

NEXT4 :RET

 

;     SUBROUTINE FLOW RATE   5

FLOW05:    CJNE  A, #14H  ,  NEXT5       ; FLOW RATE   5

MOV B ,#'5' 

Next5 :RET

;     SUBROUTINE FLOW RATE   6

FLOW06:    CJNE  A,#18H ,  NEXT6       ; FLOW RATE   6

MOV B ,#'6'

Next6 :RET

;      SIMILARLY SUBROUTINE FLOW RATE   7

 ;   TRANSMISSION SERIAL  SUBROUTINE STARTS 

STXD :           MOV SBUF,B

                     JNB TI,$

                     CLR TI

                     MOV SBUF,#'L'  ;  Sending L  After the flow Rate

                     JNB TI,$

                     CLR TI

     RET 

 END


Related Discussions:- Code for reading flow & generating serial output

End-endp-assemblers directive-microprocessor, END : END of Program:- Th...

END : END of Program:- The END directive marks the ending of the assembly language program. When the assembler comes across this END directive, it avoided the source lines avai

Develop a schematic circuit diagram of system, Develop a suitable schematic...

Develop a suitable schematic circuit diagram of your system showing the interface between the PIC16F84 and the existing mains light & switch, including 5V derivation from the 240V

Memory interface-microprocessor, Memory Interface              ...

Memory Interface                                                                  Figure: Memory Modulation design The memory of a computer contain of number of memo

Input output interface-microprocessor, I/O interface I/O  devices such ...

I/O interface I/O  devices such as displays and keyboards  establish  communication of computer with outside world. Devices may be interfaced in 2 ways Memory mapped I/O and I/

Aaa-arithmetic instruction-microprocessor, AAA: ASCII Adjust after Additio...

AAA: ASCII Adjust after Addition operation the AAA instruction is executed after an ADD instruction that adds 2 ASCII coded operands to give a byte of outcome in the AL. The AAA i

The real time system (rts)-microprocessor, The real time System (RTS) : ...

The real time System (RTS) : Calling the clock real-time is somewhat of a misnomer because it only shows the time setting it has been given. The RTC is the other half of chip

Solotuon, using 8086 assembly language that interchange upper four bits to ...

using 8086 assembly language that interchange upper four bits to lower four bits. assume that data store in byte memory and it written back to same location. and assume the data as

Input output memory mapped-microprocessor, Memory Mapped I/O Memory I/O...

Memory Mapped I/O Memory I/O devices are mapped into the system memory map with ROM and RAM. To access a hardware  device, simply write or  read  to  those  'special'  addresse

Computer organization, write a program using assembly language that print y...

write a program using assembly language that print your name

Or-logical instruction-microprocessor, OR: Logical OR: The OR instruction ...

OR: Logical OR: The OR instruction carries out the OR operation in the similar way as described in case of the AND operation. The restriction on source and destination operands ar

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd