.equ BAUDRATE_LOW = UBRR1L .equ BAUDRATE_HIGH = UBRR1H .equ USART_C = UCSR1C .equ USART_B = UCSR1B .equ USART_A = UCSR1A .equ USART_DATA = UDR1 .equ URXCaddr = URXC1addr .equ UDREaddr = UDRE1addr .equ bm_USART_RXRD = 1 << RXC1 .equ bm_USART_TXRD = 1 << UDRE1 .equ bm_ENABLE_TX = 1 << TXEN1 .equ bm_ENABLE_RX = 1 << RXEN1 .equ bm_ENABLE_INT_RX = 1<