Midisignal auslesen mit Usart

void Usart_init(void)

{

  UCSRB = (1<<RXEN)|(1<<UCSZ2);     // enables Usart receive mode

  UCSRC = (1<<URSEL);               // allows writing to the UCSRC register

  UCSRC |= (1<<UMSEL);              // synchronos Operation

  UCSRC |= (1<<UCSZ1);              // UCSZ1 and UCSZ2 set = 8 bit Word

  UBRRH |= (1<<URSEL);              // allows now writing to the UBRRH register

  UBRRL = 0x15;                     // set Baudrate to 31250

}

unsigned char USART_Receive( void )

{

/* Wait for data to be received */

while ( !(UCSRA & (1<<RXC)) )

;

/* Get and return received data from buffer */

received_byte = UDR;

return received_byte;

}