Dear friends,
I was strugling to simulate the serial i/o using DSCOPE i use to get the transmission ok the recieving part was not working at all. I stumbled across a new way to solve this problem
SOLUTION:
his is for those who are working with microvision1 of keil software.
The program
org 0000h
jmp start
org 0023
jmp timer
start:
mov scon,#50h
mov tmod,#20h
mov ie,#90h
mov scon,#50h
jmp $ ; run the timer wait for serial interrupt in infinite loop
timer:
jb ti,transmit
jb ri,recieve
reti
transmit:
clr ti
reti
recieve:
mov a,sbuf
clr ri
reti
this program is basically written for recieving simulation.
This program will not accept data mov a,sbuf the value of sbuf will be 0 always.
TO SOLVE THIS PROBLEM
assemble this program link it to get the hex file.
Then go to microvision 2 the C++ version of the assembler.
when you want to recieve data type the value in the serial window 1 LO AND BEHOLD!!!! the ri flag is set it goes to the interrupt routine and acquires the data.
Please suggest if there are any other ways of achieving the same .I am new to C++ type of assembly.
Srikanth