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javaid iqbal Posted
2-Nov-2003 07:18 GMT Toolset
C51 |  Serial window 1 javaid iqbal I am using microvision2 (UV2)environment.
when i use the following code from examples(given by keil) i see "hello world" in the serial window, when i use degugger.
#include <REG52.H>
#include <stdio.h>
#ifdef MONITOR51
char code reserve [3] _at_ 0x23;
#endif
void main (void) {
#ifndef MONITOR51
SCON = 0x50;
TMOD = 0x20;
TH1 = 221;
TR1 = 1;
TI = 1;
#endif
while (1) {
printf ("Hello World\n");
}
}
But when i run my code written in assembly(shown below) does not give any output on serial window.
org 00
mov scon,#52h
mov tmod,#20h
mov th1,#221
setb tr1
setb t1
loop: mov A,#1
mov SBuf,A
jmp loop
end
Pl point me my mistake. suggest remedial measures. | | Read-Only Author
Stefan Duncanson Posted
3-Nov-2003 11:41 GMT Toolset
C51 | RE: Serial window 1 Stefan Duncanson You need to wait for TI to go true before loading SBUF. You would also probably be better to use a printable character rather than 1.
In 'C':
while(1)
{
while(!TI);
TI=0;
SBUF='A';
}
Stefan | | Read-Only Author
javaid iqbal Posted
5-Nov-2003 04:22 GMT Toolset
C51 | RE: Serial window 1 javaid iqbal thanks stefen, it solved my problem | |
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