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RS232 interface in C code

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cafukarfoo

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rs232 interface program in c

Hello,

Can anyone share example of a RS232 interface code in C programming
language?

Thanks.
 

c code for rs232

Here is an example for 8051
Code: 
/* RS232 SIMPLE TRIAL */

#include <stdio.h>
#include <reg51.h>


/*Function to initialize RS232 serial port*/
void serial_init()
{
	SCON=0X50;		//Setup for 8-bit data
	TMOD=0X20;		//Setup Timer 1 for auto-reload
	TH1=0XFD;		//Setup for 9600 baud
	TR1=1;			//Turn on Timer 1
	T1=1;			//Indicate Ready to Transmit
}

/*This func display a null-terminated string on the rs232 port*/

void send_serial(unsigned char*s)
{
 while(*s!=0x0)
 {
  SBUF=*s;
  while(!T1)
  {  }
  T1=0;
  s++;
  }
}

/*Start of main program*/

main()
{
 unsigned char crlf[]={0x0D,0x0A,0x0};
 serial_init();
 for (;;)
 {
  send_serial("Another test");
  send_serial(crlf);
 }
}


Also try this
https://www.keil.com/download/docs/200.asp
 
rs232 c code

Thanks huzaifahm.

Anyone have one that work with FPGA?

Thanks.
 

rs232 code in c

char getCharacter (void)
{
char chr; // variable to hold the new character
while (RI != 1) {;}
chr = SBUF;
RI = 0;
return(chr);
}
void send (char a)
{
SBUF = a;
while (TI != 1);
TI=0;
}

void main (void){
char chr;
int i=0,j=0,count=0,inc=47;//inc=47
int index=0;
P1=0X00;
P2=0X00;

SCON = 0x50; // mode 1, 8-bit uart, enable receiver
TMOD = 0x20; // timer 1, mode 2, 8-bit reload
TH1 = 0XE6; // 1200
TL1 = 0XE6;
TR1 = 1;
TI = 0;
SBUF =0;

while(1){


your code

}
}
 

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