#MA 8051 Both side serial communication over UART line #Embedded C

 

#include <reg51.h>

void uart_init(void);

void sendchar(unsigned char);

unsigned char receivechar(void);

void delay();

void sendstring(char*);

void main()

{

unsigned char ch;

char* str={"Type any character here.. "};

uart_init();

sendstring(str);

sendchar('\r');

sendstring("It will be incremented by one..");

sendchar('\r');

sendchar('\r');

while(1)

{

ch=receivechar();

sendchar(ch+1);

}

}

void uart_init(void)

{

TMOD=0x20;

TH1=0xFD;

SCON=0x50;

TR1=1;

}

void sendchar(unsigned char ch)

{ 

SBUF=ch;

while(TI==0);

TI=0;

}

unsigned char receivechar(void)

{

while(RI==0);

RI=0;

return(SBUF);

}

void delay()

{

int i,j;

for(i=0;i<100;i++)

for(j=0;j<1000;j++);

}

void sendstring(char* str)

{

int i;

for(i=0;str[i]!=0;i++)

sendchar(str[i]);

}