#
#                     BARNACLE Interface
#                   ----------------------
#
#
#                Disco-Kraken  Key In Net List
#               -------------------------------
#
#
#                                        Initial Rev.   6-Dec-2022
#                                        Current Rev.  27-Dec-2023
#
#
#   This net list holds the   Barnacle Interface
#
#
#   The components for the   Barnacle Interface
#   are in the range  1551 to 1599.
#
#
#   NOTE:  In another net list file  the Emergency Rescue
#          functions use  1  section  of the  U1551  hex inverter
#          that is officially part of the Barnacle Interface circuit.
#


#
#     Barnacle Interface  UART Data Buffers  and their  FPGA/CPU Connection:
#   --------------------------------------------------------------------------
#

NET  'CPU_UART_2_Tx__to__Barnacle'  R1551-1               # DK CPU UART Tx Data to Terminator
NET  'Tx_to_Barnacle_Term_Buf'      R1551-2    U1551-3    # DK CPU UART Tx Data to Data Buffer
NET  'CPU_UART_Tx_to_Barnacle_B'    U1551-4    U1551-5    # Inverted
NET  'Data_to_Barnacle_Buf_Term'    U1551-6    R1552-1    # Tx Data to the DK Tx Terminator
NET  'DK_Tx_Data_to_Barnacle'       R1552-2    J7-5       # Tx Data to the Barnacle Connector


NET  'DK_Rx_Data_from_Barnacle'     J7-7       U1551-11   # Rx Data from the Barnacle Connector
NET  'DK_Rx_Data_from_Barnacle_B'   U1551-10   U1551-9    # Inverted
NET  'DK_Rx_Data_to_Terminator'     U1551-8    R1553-1    # Rx Data from the Barnacle to Term
NET  'CPU_UART_2_Rx_from_Barnacle'             R1553-2    # Rx Data from the Barnacle via Buf
                                                          #       and Term to the DK's CPU UART




#
#     List the NetNames of the Signals that must be
#     connected to FPGA Floating Pins.  Here just list
#     the NetNames - the actual connections to these
#     FPGA Floating pins are made in the Nets File:
#     fpga_cpu_floating_connection_nets.txt
#   ----------------------------------------------------
#
#
#      All of these are 3V3 signals:   Barnacle  UART Data
#     ---------------------------------------------------------------------------
#
#   NET  'CPU_UART_2_Tx__to__Barnacle'       # DK CPU UART 2 Tx Data  to  Barnacle
#   NET  'CPU_UART_2_Rx_from_Barnacle'       # DK CPU UART 2 Rx Data from Barnacle
#
#
#





#
#     Barnacle Interface   Master_Reset_B  &  CONTROL  Signals to the Barnacle:
#   -----------------------------------------------------------------------------
#

NET  'Barnacle_Master_Reset_B'    J7-3    # Master_Reset_B  to the Barnacle
NET  'DK_Control_1_to_Barnacle'   J7-9    # Control Signal #1 from DK to the Barnacle
NET  'DK_Control_2_to_Barnacle'   J7-11   # Control Signal #2 from DK to the Barnacle

#   These 3 Barnacle Control Signals come from the Hardwired
#   Reset Circuits  where they are all forced LOW during Power Up.




#
#     Barnacle Interface  Power Feed  and  Ground Pins:
#   -----------------------------------------------------
#

NET  'BULK_5V0'        L1551-2    C1551-2    # Bulk_5V0 Power to Filter
NET  'GROUND'                     C1551-1    # Ground Filter Input Capacitor

NET  'BARNACLE_5V0'    L1551-1    C1552-2    # Filtered Barnacle 5V0 Power
NET  'GROUND'                     C1552-1    # Ground the Bypass Capacitor


NET  'BARNACLE_5V0'    J7-1       J7-13      # Filtered 5V0 to the Barnacle Connector

NET  'GROUND'     J7-2    J7-4    J7-6       # Grounds to the Barnacle Connector
NET  'GROUND'     J7-8    J7-10   J7-12
NET  'GROUND'     J7-14




#
#     3.3 Volt Power and Grounds to the  UART Data Buffers:
#   ---------------------------------------------------------
#

NET  'BULK_3V3'    C1553-1   C1554-1     # UART Data Buffer 3V3 Bypass Caps
NET  'GROUND'      C1553-2   C1554-2     # Ground Side of Bypass Caps

NET  'BULK_3V3'    U1551-14              # 3V3 Power to UART Data Buffer chip
NET  'GROUND'      U1551-7               # Ground  to   UART Data Buffer chip


NET  'GROUND'      U1551-13              # Tie Down the unused input of the
                                         # U1551  hex inverter