src/usart_baundrate_helper.h


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#include <util/setbaud.h>
UBRR0H = UBRRH_VALUE;
UBRR0L = UBRRL_VALUE;
#if USE_2X
UCSR0A |= _BV(U2X0);
#else
UCSR0A &= ~_BV(U2X0);
#endif
#undef BAUD
#undef UBRRH_VALUE
#undef UBRRL_VALUE
#undef USE_2X