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usart.c

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/* This file has been prepared for Doxygen automatic documentation generation.*/
/* === Includes ============================================================ */

#include"usart.h"
/* ==== Macros ============================================================= */
/* === Typedefs ============================================================ */
/* === Variables =========================================================== */
/* === Prototypes ========================================================== */
/* === Implementation ====================================================== */

void uartInitialization( const baudRate_t rate ){
  
  //Initialize USART module.
  UBRR0H = 0x00;
  UBRR0L = rate;
  
  //Enable USART transmitter module. Always on.
  ENABLE_RECEIVER;
  ENABLE_TRANSMITTER;
        
  //8-N-1.
  UCSR0C |= ( 1 << UCSZ01 ) | ( 1 << UCSZ00 ); 
  
  ENABLE_RECEIVE_COMPLETE_INTERRUPT;
        
  return;
}


void uartSendSymbol( const uint8_t symbol ){
  
        //Wait until the USART module is ready to
        //transmit a new symbol.
        for( ; !( UCSR0A & ( 1 << UDRE0 ) ); ){
    
        ;
        }
        
        //Put symbol in data register.
        UDR0 = symbol;
  
        return;
}