.equ BAUDRATE_LOW = UBRR0L .equ BAUDRATE_HIGH = UBRR0H .equ USART_C = UCSR0C .equ USART_B = UCSR0B .equ USART_A = UCSR0A .equ USART_DATA = UDR0 .ifndef URXCaddr .equ URXCaddr = URXC0addr .equ UDREaddr = UDRE0addr .endif .equ bm_USART_RXRD = 1 << RXC0 .equ bm_USART_TXRD = 1 << UDRE0 .equ bm_ENABLE_TX = 1 << TXEN0 .equ bm_ENABLE_RX = 1 << RXEN0 .equ bm_ENABLE_INT_RX = 1<