LX master: purge unused signals in the receiver.

diff --git a/hw/lxmaster_receiver.vhd b/hw/lxmaster_receiver.vhd
index fd005ce483f9c12318a556816148d5b4ff9e02cd..9be6e1377d29f3b32253b1e28fa8cb119a501fe5 100644 (file)
--- a/hw/lxmaster_receiver.vhd
+++ b/hw/lxmaster_receiver.vhd
@@ -59,10 +59,6 @@ architecture Behavioral of lxmaster_receiver is
        signal lxmaster_data_counter_r  : natural range 0 to 15;
        -- Receiption
        signal lxmaster_frame_start_s   : std_logic;
-       signal lxmaster_sync_s          : std_logic;
-       signal lxmaster_sync_r          : std_logic;
-       signal lxmaster_sync_last_bit_s : std_logic;
-       signal lxmaster_sync_last_bit_r : std_logic;
        signal miso_s                   : std_logic;
        signal sync_s                   : std_logic;
        signal prev_sync_s              : std_logic;
@@ -181,7 +177,6 @@ transmitter_update:
 
                -- Defaults
                lxmaster_ram_reset_s               <= '0';
-               lxmaster_sync_last_bit_s           <= '0';
                rx_done_s                          <= '0';
                -- Defaults of state variables (no change)
                ram_addr_s                         <= ram_addr_r;
@@ -203,7 +198,6 @@ transmitter_update:
                if reset_i = '1' then
                        lxmaster_num_data_s              <= x"00";
                        lxmaster_state_s                 <= ST_END;
-                       lxmaster_sync_s                  <= '0';
                        lxmaster_last_word_s             <= '0';
                        --
                        ram_addr_s                       <= '0' & x"00";
@@ -215,7 +209,6 @@ transmitter_update:
                else
 
                        -- OK, we are enabled, default values
-                       lxmaster_sync_s                  <= '0'; -- Not transferring
                        ram_en_s                         <= '0'; -- Not reading
 
                        case lxmaster_state_r is
@@ -240,12 +233,10 @@ transmitter_update:
 
                                when ST_READY =>
                                        -- We are ready to begin transferring
-                                       lxmaster_sync_s              <= '1'; -- Transferring data next cycle
                                        lxmaster_data_counter_s      <= 0; -- Reset counter
                                        lxmaster_state_s             <= ST_XFER; --Go to transfer loop
 
                                when ST_XFER =>
-                                       lxmaster_sync_s              <= '1'; -- Transferring data next cycle
 
                                        if inc_ram_addr_r = '1' then
                                                -- Update address if second and other loop
@@ -323,19 +314,11 @@ transmitter_update:
                                                        lxmaster_crc_error_s     <= lxmaster_crc_error_int_r or crc_bit_mismatch_v;
                                                else
                                                        -- Begin transmission of next data
-                                                       lxmaster_sync_s          <= '1'; -- Transferring data next cycle
                                                        lxmaster_data_counter_s  <= 0; -- Reset counter
                                                        lxmaster_state_s         <= ST_XFER; --Go to transfer loop
                                                end if;
 
                                        else
-                                               -- Sync goes inactive to signalize termination if we're on last message
-                                               if lxmaster_data_counter_r /= 6 or lxmaster_num_data_r /= x"00" then
-                                                       lxmaster_sync_s          <= '1';
-                                               else
-                                                 lxmaster_sync_last_bit_s <= '1';
-                                               end if;
-
                                                lxmaster_data_counter_s    <= lxmaster_data_counter_r + 1; -- Increment
                                        end if;
 
@@ -399,9 +382,6 @@ state:
                        end if;
                end if;
 
-               lxmaster_sync_r                 <= lxmaster_sync_s;
-               lxmaster_sync_last_bit_r        <= lxmaster_sync_last_bit_s;
-
                prev_sync_r <= prev_sync_s;
                received_data_r <= received_data_s;