Here is a list of all struct and union fields with links to the structures/unions they belong to:

• baudrate : usart_rs232_options , usart_spi_options
• charlength : usart_rs232_options
• data_order : usart_spi_options
• DIR : PORT_struct
• paritytype : usart_rs232_options
• PINCRL : PORT_struct
• PORTDATA : PORT_struct
• reserved : USART_struct
• spimode : usart_spi_options
• stopbits : usart_rs232_options
• UBRR : USART_struct
• UCSRnA : USART_struct
• UCSRnB : USART_struct
• UCSRnC : USART_struct
• UDR : USART_struct