uart_interpreter

LIBRARY ieee;
use ieee.numeric_std.all;
use IEEE.std_logic_1164.all;

library work;
use work.type_package.all;

ENTITY uart_interpreter IS
    generic (
            max_experiment_repetition_counter_value     :   integer;
            max_step_counter_value                      :   integer;
            max_initialization_repetition_counter_value :   integer;
            max_photon_counter_value                    :   integer;

            max_photon_counter_window_pulse_value       :   integer
        );
    PORT(
            rst                                         :   in  std_logic;
            clk                                         :   in  std_logic;

            ready                                       :   in  std_logic;

            byte0                                       :   in std_logic_vector(7 downto 0);
            byte1                                       :   in std_logic_vector(7 downto 0);
            byte2                                       :   in std_logic_vector(7 downto 0);
            byte3                                       :   in std_logic_vector(7 downto 0);
            byte4                                       :   in std_logic_vector(7 downto 0);
            byte5                                       :   in std_logic_vector(7 downto 0);

            experiment_repetition_counter_threshold     :   out integer range 0 to max_experiment_repetition_counter_value;

            initialization_repetition_counter_threshold :   out integer range 0 to max_initialization_repetition_counter_value;

            step_counter_threshold_initialization       :   out integer range 0 to max_step_counter_value;
            step_counter_threshold_measurement          :   out integer range 0 to max_step_counter_value;

            photon_counter_threshold_initialization     :   out integer range 0 to max_photon_counter_value;
            photon_counter_threshold_measurement        :   out integer range 0 to max_photon_counter_value;

            photon_counter_window_offset_initialization :   out integer range 0 to max_photon_counter_window_pulse_value;
            photon_counter_window_length_initialization :   out integer range 0 to max_photon_counter_window_pulse_value;
            photon_counter_window_offset_measurement    :   out integer range 0 to max_photon_counter_window_pulse_value;
            photon_counter_window_length_measurement    :   out integer range 0 to max_photon_counter_window_pulse_value;

            laser_1_offset1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_1_length1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_1_offset2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_1_length2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_1_offset1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_1_length1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_1_offset2_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_1_length2_measurement                 :   out integer range 0 to max_step_counter_value;

            laser_2_offset1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_2_length1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_2_offset2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_2_length2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_2_offset1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_2_length1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_2_offset2_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_2_length2_measurement                 :   out integer range 0 to max_step_counter_value;

            laser_3_offset1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_3_length1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_3_offset2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_3_length2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_3_offset1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_3_length1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_3_offset2_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_3_length2_measurement                 :   out integer range 0 to max_step_counter_value;

            laser_4_offset1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_4_length1_initialization              :   out integer range 0 to max_step_counter_value;
            laser_4_offset2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_4_length2_initialization              :   out integer range 0 to max_step_counter_value;
            laser_4_offset1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_4_length1_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_4_offset2_measurement                 :   out integer range 0 to max_step_counter_value;
            laser_4_length2_measurement                 :   out integer range 0 to max_step_counter_value;

            htm_dac_1_offset1_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_1_length1_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_1_offset2_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_1_length2_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_1_offset1_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_1_length1_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_1_offset2_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_1_length2_measurement               :   out integer range 0 to max_step_counter_value;

            htm_dac_2_offset1_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_2_length1_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_2_offset2_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_2_length2_initialization            :   out integer range 0 to max_step_counter_value;
            htm_dac_2_offset1_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_2_length1_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_2_offset2_measurement               :   out integer range 0 to max_step_counter_value;
            htm_dac_2_length2_measurement               :   out integer range 0 to max_step_counter_value;

            ni_gate_offset1_initialization              :   out integer range 0 to max_step_counter_value;
            ni_gate_length1_initialization              :   out integer range 0 to max_step_counter_value;
            ni_gate_offset2_initialization              :   out integer range 0 to max_step_counter_value;
            ni_gate_length2_initialization              :   out integer range 0 to max_step_counter_value;
            ni_gate_offset1_measurement                 :   out integer range 0 to max_step_counter_value;
            ni_gate_length1_measurement                 :   out integer range 0 to max_step_counter_value;
            ni_gate_offset2_measurement                 :   out integer range 0 to max_step_counter_value;
            ni_gate_length2_measurement                 :   out integer range 0 to max_step_counter_value;

            start                                       :   out std_logic;
            measurement_mode                            :   out t_measurement
        );
END ENTITY uart_interpreter;

ARCHITECTURE behavioural OF uart_interpreter IS
    type t_integer_array_step_counter is array (integer range <>, integer range <>) of integer range 0 to max_step_counter_value;

    signal demux_uart_pulser : t_integer_array_step_counter(0 to 6, 0 to 7);

    signal start_experiment : std_logic;



begin
    laser_1_offset1_initialization <= demux_uart_pulser(0,0);
    laser_1_length1_initialization <= demux_uart_pulser(0,1);
    laser_1_offset2_initialization <= demux_uart_pulser(0,2);
    laser_1_length2_initialization <= demux_uart_pulser(0,3);
    laser_1_offset1_measurement <= demux_uart_pulser(0,4);
    laser_1_length1_measurement <= demux_uart_pulser(0,5);
    laser_1_offset2_measurement <= demux_uart_pulser(0,6);
    laser_1_length2_measurement <= demux_uart_pulser(0,7);

    laser_2_offset1_initialization <= demux_uart_pulser(1,0);
    laser_2_length1_initialization <= demux_uart_pulser(1,1);
    laser_2_offset2_initialization <= demux_uart_pulser(1,2);
    laser_2_length2_initialization <= demux_uart_pulser(1,3);
    laser_2_offset1_measurement <= demux_uart_pulser(1,4);
    laser_2_length1_measurement <= demux_uart_pulser(1,5);
    laser_2_offset2_measurement <= demux_uart_pulser(1,6);
    laser_2_length2_measurement <= demux_uart_pulser(1,7);

    laser_3_offset1_initialization <= demux_uart_pulser(2,0);
    laser_3_length1_initialization <= demux_uart_pulser(2,1);
    laser_3_offset2_initialization <= demux_uart_pulser(2,2);
    laser_3_length2_initialization <= demux_uart_pulser(2,3);
    laser_3_offset1_measurement <= demux_uart_pulser(2,4);
    laser_3_length1_measurement <= demux_uart_pulser(2,5);
    laser_3_offset2_measurement <= demux_uart_pulser(2,6);
    laser_3_length2_measurement <= demux_uart_pulser(2,7);

    laser_4_offset1_initialization <= demux_uart_pulser(3,0);
    laser_4_length1_initialization <= demux_uart_pulser(3,1);
    laser_4_offset2_initialization <= demux_uart_pulser(3,2);
    laser_4_length2_initialization <= demux_uart_pulser(3,3);
    laser_4_offset1_measurement <= demux_uart_pulser(3,4);
    laser_4_length1_measurement <= demux_uart_pulser(3,5);
    laser_4_offset2_measurement <= demux_uart_pulser(3,6);
    laser_4_length2_measurement <= demux_uart_pulser(3,7);

    htm_dac_1_offset1_initialization <= demux_uart_pulser(4,0);
    htm_dac_1_length1_initialization <= demux_uart_pulser(4,1);
    htm_dac_1_offset2_initialization <= demux_uart_pulser(4,2);
    htm_dac_1_length2_initialization <= demux_uart_pulser(4,3);
    htm_dac_1_offset1_measurement <= demux_uart_pulser(4,4);
    htm_dac_1_length1_measurement <= demux_uart_pulser(4,5);
    htm_dac_1_offset2_measurement <= demux_uart_pulser(4,6);
    htm_dac_1_length2_measurement <= demux_uart_pulser(4,7);

    htm_dac_2_offset1_initialization <= demux_uart_pulser(5,0);
    htm_dac_2_length1_initialization <= demux_uart_pulser(5,1);
    htm_dac_2_offset2_initialization <= demux_uart_pulser(5,2);
    htm_dac_2_length2_initialization <= demux_uart_pulser(5,3);
    htm_dac_2_offset1_measurement <= demux_uart_pulser(5,4);
    htm_dac_2_length1_measurement <= demux_uart_pulser(5,5);
    htm_dac_2_offset2_measurement <= demux_uart_pulser(5,6);
    htm_dac_2_length2_measurement <= demux_uart_pulser(5,7);

    ni_gate_offset1_initialization <= demux_uart_pulser(6,0);
    ni_gate_length1_initialization <= demux_uart_pulser(6,1);
    ni_gate_offset2_initialization <= demux_uart_pulser(6,2);
    ni_gate_length2_initialization <= demux_uart_pulser(6,3);
    ni_gate_offset1_measurement <= demux_uart_pulser(6,4);
    ni_gate_length1_measurement <= demux_uart_pulser(6,5);
    ni_gate_offset2_measurement <= demux_uart_pulser(6,6);
    ni_gate_length2_measurement <= demux_uart_pulser(6,7);

    process (rst, clk) is
    begin
        if rst = '1' then
            experiment_repetition_counter_threshold <= 0;

            initialization_repetition_counter_threshold <= 0;

            step_counter_threshold_initialization <= 0;
            step_counter_threshold_measurement <= 0;

            photon_counter_threshold_initialization <= 0;
            photon_counter_threshold_measurement <= 0;

            photon_counter_window_offset_initialization <= 0;
            photon_counter_window_length_initialization <= 0;
            photon_counter_window_offset_measurement <= 0;
            photon_counter_window_length_measurement <= 0;

            start_experiment <= '0';
            measurement_mode <= measurement1;

            demux_uart_pulser <= (others => (others => 0));

        elsif rising_edge(clk) then
            if ready = '1' then
                case to_integer(unsigned(byte0)) is
                    when 0 =>
                        case to_integer(unsigned(byte1)) is
                            when 0 =>
                                experiment_repetition_counter_threshold <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 1 =>
                                initialization_repetition_counter_threshold <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 2 =>
                                step_counter_threshold_initialization <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 3 =>
                                step_counter_threshold_measurement <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 4 =>
                                photon_counter_threshold_initialization <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 5 =>
                                photon_counter_threshold_measurement <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 6 =>
                                photon_counter_window_offset_initialization <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 7 =>
                                photon_counter_window_length_initialization <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 8 =>
                                photon_counter_window_offset_measurement <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 9 =>
                                photon_counter_window_length_measurement <= to_integer(unsigned(byte5 & byte4 & byte3));

                            when 10 =>
                                if byte3 = "00000000" then
                                    measurement_mode <= measurement1;
                                else
                                    measurement_mode <= measurement2;
                                end if;

                            when others =>
                                null;
                        end case;


                    when 1 =>
                        demux_uart_pulser(to_integer(unsigned(byte1)), to_integer(unsigned(byte2))) <= to_integer(unsigned(byte5 & byte4 & byte3));
                    when 2 =>
                        if byte3 /= "00000000" then
                                    start_experiment <= '1';
                        end if;
                    when 3 =>
                        experiment_repetition_counter_threshold <= 0;

                        initialization_repetition_counter_threshold <= 0;

                        step_counter_threshold_initialization <= 0;
                        step_counter_threshold_measurement <= 0;

                        photon_counter_threshold_initialization <= 0;
                        photon_counter_threshold_measurement <= 0;

                        photon_counter_window_offset_initialization <= 0;
                        photon_counter_window_length_initialization <= 0;
                        photon_counter_window_offset_measurement <= 0;
                        photon_counter_window_length_measurement <= 0;

                        start_experiment <= '0';
                        measurement_mode <= measurement1;

                        demux_uart_pulser <= (others => (others => 0));

                    when others =>
                        null;
                end case;

            end if;

            if start_experiment = '1' then
                start_experiment <= '0';
            end if;

        end if;
    end process;

    start <= start_experiment;
end architecture behavioural;