| Line 94... |
Line 94... |
architecture fsm of GECKO3COM_simple_fsm is
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architecture fsm of GECKO3COM_simple_fsm is
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-- XST specific synthesize attributes
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-- XST specific synthesize attributes
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attribute safe_implementation : string;
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attribute safe_implementation : string;
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attribute safe_recovery_state : string;
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attribute safe_recovery_state : string;
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attribute fsm_encoding : string;
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type state_type is (st1_idle, st2_abort, st3_read_msg_id, st4_check_msg_id,
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type state_type is (st1_idle, st2_abort, st3_read_msg_id, st4_check_msg_id,
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st5_read_nbtag, st6_read_transfer_size_low,
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st5_read_nbtag, st6_read_transfer_size_low,
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st7_read_transfer_size_high, st8_check_attributes,
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st7_read_transfer_size_high, st8_check_attributes,
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st9_signal_data_request, st10_signal_receive_new_data,
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st9_signal_data_request, st10_signal_receive_new_data,
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| Line 111... |
Line 112... |
signal state, next_state : state_type;
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signal state, next_state : state_type;
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-- XST specific synthesize attributes
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-- XST specific synthesize attributes
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attribute safe_recovery_state of state : signal is "st1_idle";
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attribute safe_recovery_state of state : signal is "st1_idle";
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attribute safe_implementation of state : signal is "yes";
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attribute safe_implementation of state : signal is "yes";
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attribute fsm_encoding of state : signal is "johnson";
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--Declare internal signals for all outputs of the state-machine
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--Declare internal signals for all outputs of the state-machine
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signal s_receive_fifo_wr_en : std_logic;
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signal s_receive_fifo_wr_en : std_logic;
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signal s_receive_fifo_reset : std_logic;
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signal s_receive_fifo_reset : std_logic;
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signal s_receive_transfersize_en : std_logic_vector((32/SIZE_DBUS_GPIF)-1 downto 0);
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signal s_receive_transfersize_en : std_logic_vector((32/SIZE_DBUS_GPIF)-1 downto 0);
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| Line 348... |
Line 351... |
state = st17_send_nbtag or
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state = st17_send_nbtag or
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state = st18_send_transfer_size_low or
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state = st18_send_transfer_size_low or
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state = st19_send_transfer_size_high or
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state = st19_send_transfer_size_high or
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state = st20_send_attributes or
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state = st20_send_attributes or
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state = st21_send_reserved))
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state = st21_send_reserved))
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or state = st22_send_data
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or (state = st22_send_data and
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i_gpif_tx_full = '0' and
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i_send_fifo_empty = '0')
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or (state = st23_send_wait and
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i_gpif_tx_full = '0' and
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i_send_fifo_empty = '0')
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then
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then
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s_gpif_tx_wr_en <= '1';
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s_gpif_tx_wr_en <= '1';
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end if;
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end if;
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end process;
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end process;
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| Line 374... |
Line 382... |
elsif i_gpif_rx_empty = '0' then
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elsif i_gpif_rx_empty = '0' then
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next_state <= st3_read_msg_id;
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next_state <= st3_read_msg_id;
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end if;
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end if;
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when st2_abort =>
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when st2_abort =>
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if i_gpif_abort = '0' then
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next_state <= st1_idle;
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next_state <= st1_idle;
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end if;
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when st3_read_msg_id =>
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when st3_read_msg_id =>
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next_state <= st4_check_msg_id;
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next_state <= st4_check_msg_id;
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when st4_check_msg_id =>
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when st4_check_msg_id =>
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