To write a C program to transmit/receive the character using timer1 mode2, operating at a baud rate of 9600 and display the character using UART

 

Aim:

To write a C program to transmit/receive the character using timer1 mode2,

operating at a baud rate of 9600 and display the character using UART

Algorithm:

Step1. Start the program

Step 2. Declare the header file

Step 3. Set the timer mode1 in mode 2

Step 4. Set the baud rate to9600

Step 5. Set the SCON register to 5

Step 6. Set the timers run bit

Step 7. Start transferring the letter until timer interrupt becomes one

Program:

Without Pointers

#include<reg51.h>

void main()

{

TMOD=0x20;

TH1=0xFD;

SCON=0x50;

TR1=1;

while(1)

{

SBUF='A';

while(TI==0);

TI=0;

}

}

With Pointers

#include<reg51.h>

char tx='A';

char *txp=&tx;

void transmit(char *tx)

{

SBUF=*tx;

while(TI==0);

TI=0;

}

void main()

{

TMOD=0x20;

TH1=0xFD;

SCON=0x50;

TR1=1;

while(1)

{

transmit(txp);

}}