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

- u -

• UBRR : USART_struct
• UCSRnA : USART_struct
• UCSRnB : USART_struct
• UCSRnC : USART_struct
• UDR : USART_struct
• uint8 : COG_line_data_packet_type
• unpair : nwk_var_tag
• UnscannedChannels : mlme_scan_conf_tag
• unused : bma_axis8_t , bma_axis10_t , bma_axis14_t , kxtf9_axis_t
• unusedBits : TWI_statusReg
• user_string : app_info_tag
• UserString : NodeDesc_tag , nib_tag