Sensor Interfacing code

Sensor-Interface/ACB_interface.vhd

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+----------------------------------------------------------------------------------
+-- Company: 
+-- Engineer: 
+-- 
+-- Create Date: 07/10/2022 03:50:39 PM
+-- Design Name: 
+-- Module Name: ACB_interface - Behavioral
+-- Project Name: 
+-- Target Devices: 
+-- Tool Versions: 
+-- Description: 
+-- 
+-- Dependencies: 
+-- 
+-- Revision:
+-- Revision 0.01 - File Created
+-- Additional Comments:
+-- 
+----------------------------------------------------------------------------------
+
+
+library IEEE;
+use IEEE.STD_LOGIC_1164.ALL;
+USE ieee.numeric_std.ALL;
+-- Uncomment the following library declaration if using
+-- arithmetic functions with Signed or Unsigned values
+--use IEEE.NUMERIC_STD.ALL;
+
+-- Uncomment the following library declaration if instantiating
+-- any Xilinx leaf cells in this code.
+--library UNISIM;
+--use UNISIM.VComponents.all;
+
+entity ACB_interface is
+
+    Port (In_data: in std_logic_vector(9 downto 0);
+        Frame_Valid: in std_logic;
+        Line_valid: in std_logic;
+        In_clock: in std_logic;
+        In_ack: inout std_logic;
+
+        out_ack: inout std_logic;
+        write_data: out std_logic_vector(63 downto 0)
+        );
+
+end ACB_interface;
+
+architecture mixed of ACB_interface is
+
+    type FSM is (Idle, onepixel, twopixels, threepixels, fourpixels, one_word);
+    signal current_state, next_state : FSM;
+    signal written_pixel: std_logic := '0';
+    signal write_to : std_logic_vector(5 downto 0);
+
+    begin
+
+
+    --clocked_input: process(In_clock)
+    --    begin
+    --    If (line_valid = '1' and frame_valid = '1' and in_ack = '1') then
+    --        If (In_clock'event and In_clock = '1') then
+    --            write_data((to_integer(unsigned(write_to)) + 9) downto to_integer(unsigned(write_to))) <= In_Data; 
+    --            written_pixel <= '1';
+    --        end if;
+    --   end if;
+    --    end process clocked_input;
+
+    FSM_state : process(written_pixel)
+        begin
+
+        if(In_clock'event and In_clock = '1') then
+            case current_state is
+                when Idle=> 
+                    If (in_ack = '1') then
+                        next_state <= onepixel;
+                    else 
+                        next_state <= Idle;
+                    end if;        
+                when Onepixel =>
+                    written_pixel <= '0';
+                    write_to <= "000000";
+						  write_data((to_integer(unsigned(write_to)) + 9) downto to_integer(unsigned(write_to))) <= In_Data; 
+                    write_data(15 downto 10) <= "000000";                    
+                    next_state <= twopixels;   
+                when Twopixels =>
+                    written_pixel <= '0';
+                    write_to <= "010000";
+						  write_data((to_integer(unsigned(write_to)) + 9) downto to_integer(unsigned(write_to))) <= In_Data; 
+                    write_data(31 downto 26) <= "000000";                    
+                    next_state <= threepixels; 
+                when Threepixels =>
+                    written_pixel <= '0';
+                    write_to <= "100000";
+						  write_data((to_integer(unsigned(write_to)) + 9) downto to_integer(unsigned(write_to))) <= In_Data; 
+                    write_data(47 downto 42) <= "000000";                    
+                    next_state <= fourpixels;        
+                when Fourpixels =>
+                    written_pixel <= '0';
+                    write_to <= "110000";
+						  write_data((to_integer(unsigned(write_to)) + 9) downto to_integer(unsigned(write_to))) <= In_Data; 
+                    write_data(63 downto 58) <= "000000";
+                    next_state <= one_word;
+                when one_word =>
+                    written_pixel <='0';
+                    in_ack <= '0';
+                    out_ack <= '1';
+                    next_state <= Idle;       
+            end case;  
+
+        end if;    
+    end process;
+
+	 FSM_transition: process(next_state)
+		begin
+
+		current_state <= next_state;
+
+	 end process;	
+
+    end mixed;

Sensor-Interface/README.md

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+