Question

In: Electrical Engineering

Write a Pseudo Code to send an Array of 20 elements from 8051 to the computer...

Write a Pseudo Code to send an Array of 20 elements from 8051 to the computer via serial port at maximum baud rate possible with XTAL=11.0592MHz.

Expert Solution

ORG 0

MOV P2, #0FFH ; make P2 an input port

MOV TMOD,#20H ;timer 1, mode 2

MOV TH1, #0FAH ;4800 baud rate

MOV SCON, #50H ; 8-bit, 1 stop, REN enabled

SETB TR1 ; start timer 1

MOV DPTR, #MYDATA ; load pointer for message

H_1: CLR A

MOV A,@A+DPTR ;get the character

JZ B_1 ;if last character get out

ACALL SEND ;otherwise call transfer

INC DPTR ;next one

SJMP H_1 ;stay in loop B_1:

MOV a,P2 ;read data on P2

ACALL SEND ;transfer it serially

ACALL RECV ;get the serial data

MOV P1,A ;display it on LEDs

SJMP B_1 ;stay in loop indefinitely

---------serial data transfer. ACC has the data-------------

SEND: MOV SBUF,A ;load the data H_2:

JNB TI,H_2 ;stay here until last bit gone

CLR TI ; get ready for next char

RET ;return to caller

Manojponduru answered 4 months ago

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