serial data transmission to pc with 89s51

[usman ali butt]

Can i use 89s51 for serial data transmission to pc using hyperterminal? I am unable to do so…. Receiving garbage characters on the hyperterminal… Can any one help me? All the sites having content according to this project are using 89c51 microcontroller….. Does 89s51 is capable of generating baud rate’s…. 

 

My project code is below…

 

#include<reg51.h>

 

void main()

{

char A[]=”usman ali butt”;

int i=0;

 

TMOD=0x20; // Timer1 Mode2 8 bit auto reload

TH1=0xFD; // 9600 bps

SCON=0x50; // 8 Data bit, 1 start bit, 1 stop bit 

TR1=1; // Timer1 ON

while(1)

{

while(A!=’’){

SBUF=A;

while(TI==0); // It automatically poles up to 1 when character is transmitted

TI=0;

i++;

                 }

i=0;

}

 

}

[AJISH ALFRED]

Hi Usman,

I hope this is what you were looking for

http://www.engineersgarage.com/microcontroller/8051projects/interface-serialport-RS232-AT89C51-circuit

[SHAH DISHANT H.]

Hi,

 

Test the hyperterminal settings also.

 

If you are sending ASCII values then configure hyperterminal in ASCII mode.

 

All the best.

[Ashutosh Bhatt]

just check for your crystal frequency

it should bot be 12 MHz

it must be 11.059 MHz.

only this crystal value will give you exact 9600 baud rate

[Author]

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