| Line 62... |
Line 62... |
b_gpif_bus : inout std_logic_vector(SIZE_DBUS_GPIF-1 downto 0);
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b_gpif_bus : inout std_logic_vector(SIZE_DBUS_GPIF-1 downto 0);
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-- simple test "user interface" signals
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-- simple test "user interface" signals
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o_LEDrx : out std_logic; -- controll LED receive data
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o_LEDrx : out std_logic; -- controll LED receive data
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o_LEDtx : out std_logic; -- controll LED send data
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o_LEDtx : out std_logic; -- controll LED send data
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o_LEDrun : out std_logic; -- power LED
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o_LEDrun : out std_logic; -- power LED
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o_dummy : out std_logic; -- dummy output for otherwise unused signals
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i_mode_switch : in std_logic_vector(2 downto 0));
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i_mode_switch : in std_logic_vector(2 downto 0));
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end GECKO3COM_simple_test;
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end GECKO3COM_simple_test;
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| Line 79... |
Line 80... |
-- lenght of the message stored in the response message rom:
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-- lenght of the message stored in the response message rom:
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signal c_transfer_size_rom : std_logic_vector(31 downto 0) := x"0000000E";
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signal c_transfer_size_rom : std_logic_vector(31 downto 0) := x"0000000E";
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|
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-- we will transmitt 1 MiB data when the pseude random number generator
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-- we will transmitt 1 MiB data when the pseude random number generator
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-- is used:
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-- is used:
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signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00100000";
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--signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00100000";
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signal c_transfer_size_prng : std_logic_vector(31 downto 0) := x"00000FA0";
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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-- COMPONENTS
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-- COMPONENTS
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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| Line 214... |
Line 216... |
b_gpif_bus => b_gpif_bus);
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b_gpif_bus => b_gpif_bus);
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|
|
|
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response_message_rom_1: response_message_rom
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response_message_rom_1: response_message_rom
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port map (
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port map (
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A => s_send_counter_value(3 downto 0),
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A => s_send_counter_value(5 downto 2),
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D => s_message_rom_data);
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D => s_message_rom_data);
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|
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o_LEDrun <= '1';
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o_LEDrun <= '1';
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|
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o_dummy <= s_send_finished or s_receive_end_of_message or s_receive_newdata
|
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or s_receive_data_error;
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|
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-- purpose: converts the mode_switch input to a binary coded value
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-- purpose: converts the mode_switch input to a binary coded value
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-- type : combinational
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-- type : combinational
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-- inputs : i_mode_switch
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-- inputs : i_mode_switch
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-- outputs: s_mode
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-- outputs: s_mode
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| Line 329... |
Line 334... |
elsif i_sysclk'event and i_sysclk = '1' then -- rising clock edge
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elsif i_sysclk'event and i_sysclk = '1' then -- rising clock edge
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if s_send_counter_reset = '1' then
|
if s_send_counter_reset = '1' then
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s_send_counter_value <= (others => '0');
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s_send_counter_value <= (others => '0');
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end if;
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end if;
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if s_send_counter_en = '1' then
|
if s_send_counter_en = '1' then
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s_send_counter_value <= s_send_counter_value + 1;
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s_send_counter_value(31 downto 2) <=
|
|
s_send_counter_value(31 downto 2) + 1;
|
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s_send_counter_value(1 downto 0) <= "00"; -- every fifo write (32bit)
|
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-- transfers 4 bytes.
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end if;
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end if;
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end if;
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end if;
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end process send_counter;
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end process send_counter;
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|
|
-- transfer size counter comparator
|
-- transfer size counter comparator
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s_send_counter_equals_transfer_size <=
|
s_send_counter_equals_transfer_size <=
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'1' when s_send_counter_value = s_send_transfersize else
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'1' when s_send_counter_value >= s_send_transfersize else
|
'0';
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'0';
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|
|
|
|
-- purpose: subracts the send counter end value from the remaining transfer size value
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-- purpose: subracts the send counter end value from the remaining transfer size value
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-- type : combinational
|
-- type : combinational
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