Subversion Repositories iota_pow_vhdl

-- IOTA Pearl Diver VHDL Port

--

-- 2018 by Thomas Pototschnig <microengineer18@gmail.com,

-- http://microengineer.eu

-- discord: pmaxuw#8292

--

-- Permission is hereby granted, free of charge, to any person obtaining

-- a copy of this software and associated documentation files (the

-- "Software"), to deal in the Software without restriction, including

-- without limitation the rights to use, copy, modify, merge, publish,

-- distribute, sublicense, and/or sell copies of the Software, and to

-- permit persons to whom the Software is furnished to do so, subject to

-- the following conditions:

-- 

-- The above copyright notice and this permission notice shall be

-- included in all copies or substantial portions of the Software.

-- 

-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

-- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

-- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

-- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

-- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWAR

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

use IEEE.STD_LOGIC_ARITH.ALL;

use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity de1 is

        port (

                CLOCK_50 : in std_logic;

                reset : in std_logic;

                led_running : out std_logic;

                led_found : out std_logic;

                led_overflow : out std_logic;

--              ////////////////////////        UART    ////////////////////////

                spi_mosi : in std_logic;

                spi_sck : in std_logic;

                spi_ss : in std_logic;

                spi_miso : out std_logic

        );

end;

architecture beh of de1 is

signal nreset : std_logic;

signal pll_clk : std_logic;

signal pll_reset : std_logic := '0';

signal pll_locked : std_logic;

signal spi_data_tx : std_logic_vector(31 downto 0);

signal spi_data_rx  : std_logic_vector(31 downto 0);

signal spi_data_rx_en : std_logic;

signal spi_data_strobe : std_logic;

signal pll_slow : std_logic;

component spi_slave

        port

        (

                clk : in std_logic;

                reset : in std_logic;

                mosi : in std_logic;

                miso : out std_logic;

                sck : in std_logic;

                ss : in std_logic;

                data_strobe : in std_logic;

                data_rd : in std_logic_vector(31 downto 0);

                data_wr : out std_logic_vector(31 downto 0);

                data_wren : out std_logic

        );

end component;

component pll

        PORT

        (

                areset          : IN STD_LOGIC  := '0';

                inclk0          : IN STD_LOGIC  := '0';

                c0              : OUT STD_LOGIC ;

                c1 : out std_logic;

                locked          : OUT STD_LOGIC

        );

end component;

component curl

        port

        (

                clk : in std_logic;

                clk_slow : in std_logic;

                reset : in std_logic;

                spi_data_rx : in std_logic_vector(31 downto 0);

                spi_data_tx : out std_logic_vector(31 downto 0);

                spi_data_rxen : in std_logic;

                spi_data_strobe : out std_logic;

                overflow : out std_logic;

                running : out std_logic;

                found : out std_logic

        );

end component;

begin

        nreset <= not reset;

        pll0 : pll port map (

                areset => pll_reset,

                inclk0 => CLOCK_50,

                c0 => pll_clk,

                c1      => pll_slow,

                locked => pll_locked

        );

        spi0 : spi_slave port map (

                clk => pll_slow,

                reset => nreset,

                mosi => spi_mosi,

                miso => spi_miso,

                sck => spi_sck,

                ss => spi_ss,

                data_strobe => spi_data_strobe,

                data_rd => spi_data_tx,

                data_wr => spi_data_rx,

                data_wren => spi_data_rx_en

        );

        curl0 : curl port map (

                clk => pll_clk,

                reset => nreset,

                clk_slow => pll_slow,

                spi_data_rx => spi_data_rx,

                spi_data_tx => spi_data_tx,

                spi_data_rxen => spi_data_rx_en,

                spi_data_strobe => spi_data_strobe,

                overflow => led_overflow,

                running => led_running,

                found => led_found

        );

end architecture;