//POPTE
#define RXD0                0
#define TXD0                1

#define RS485_DDR           DDRE
#define RS485_PORT          PORTE
#define RS485_PIN           PINE

#define GL_BUS_DIR          2
#define Global_Bus_RS485_Dir_RX() {RS485_PORT &= ~(1<<GL_BUS_DIR);}
#define Global_Bus_RS485_Dir_TX() {RS485_PORT |= (1<<GL_BUS_DIR);}

#define LL_BUS_DIR          3
#define Local_Bus_RS485_Dir_RX()  {RS485_PORT &= ~(1<<LL_BUS_DIR);}
#define Local_Bus_RS485_Dir_TX()  {RS485_PORT |= (1<<LL_BUS_DIR);}

//::::::::::::::::::::::::::::::::::::::::::::::::::::::
// Запрет приема
//::::::::::::::::::::::::::::::::::::::::::::::::::::::
void USART0_DisableRecive(void)
{
  UCSR0B &= ~(1 << RXEN0);
  Global_Bus_RS485_Dir_TX();
}

//::::::::::::::::::::::::::::::::::::::::::::::::::::::
// Разрешение приема
//::::::::::::::::::::::::::::::::::::::::::::::::::::::
void USART0_EnableRecive(void)
{
  Global_Bus_RS485_Dir_RX();
  UCSR0B |= (1 << RXEN0);
}


#pragma vector=USART0_TXC_vect
__interrupt void USART0_TX_interrupt( void )
{
  if((usart0.flags & (1<<USART0_FLAG_TX_COMPLETE)) != 0)
  {
    usart0.flags &= ~(1<<USART0_FLAG_TX_COMPLETE);
    usart0.flags |= (1<<USART0_FLAG_SHIFT_REG_EMPTY);
    USART0_EnableRecive();
  }
}