void uart_init()
{
    USARTC0.CTRLB = USART_TXEN_bm | /*USART_CLK2X_bm | */USART_RXEN_bm;
 33e:   e0 ea           ldi r30, 0xA0   ; 160
 340:   f8 e0           ldi r31, 0x08   ; 8
 342:   88 e1           ldi r24, 0x18   ; 24
 344:   84 83           std Z+4, r24    ; 0x04
    USARTC0.CTRLC = USART_CHSIZE_8BIT_gc;
 346:   83 e0           ldi r24, 0x03   ; 3
 348:   85 83           std Z+5, r24    ; 0x05
    //USARTF0.BAUDCTRLA = 1; // 2MBaud
    PORTC.DIRSET = (1 << 3);
 34a:   88 e0           ldi r24, 0x08   ; 8
 34c:   a0 e4           ldi r26, 0x40   ; 64
 34e:   b6 e0           ldi r27, 0x06   ; 6
 350:   11 96           adiw    r26, 0x01   ; 1
 352:   8c 93           st  X, r24
 354:   11 97           sbiw    r26, 0x01   ; 1

    USARTC0.DATA = 'x';
 356:   88 e7           ldi r24, 0x78   ; 120
 358:   80 83           st  Z, r24
}
 35a:   08 95           ret