// ***********************************************************
// Project:
// Author:
// Module description:
// ***********************************************************
#include <avr\io.h> // Most basic include files
#include <avr\interrupt.h> // Add the necessary ones
#include <avr\signal.h> // here
// Define here the global static variables
//
unsigned char data;
void USART_receive()
{
while((UCSRA & 0x80)==0x00) //wait for RXC flag
{ ; }
data = UDR; //retrieve data from UDR
}
void USART_transmit()
{
while((UCSRA & 0x20)==0x00) //wait for UDRE flag
{ ; }
UDR = data; //load data to UDR for transmission
}
// Main program
//
int main(void)
{
UCSRA = 0x00; //control register initialization
UCSRB = 0x18; //enable transmitter and receiver
UCSRC = 0xBE; //async, odd parity, 2 stop bit,
//9 data bits
UBRRH = 0x00;
UBRRL = 0x33; //Baud Rate initialization
while(1)
{ // Infinite loop; define here the
USART_receive();
USART_transmit();
}
}
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