Subversion Repositories uart_block

--! @file

--! @brief Point to point wishbone interconnection (Sample Master with uart_wishbone_slave)

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

entity INTERCON_P2P is

port (

            -- External (non-WISHBONE) inputs

            EXTCLK: in std_logic;

            EXTRST: in std_logic;

            -- External signals for simulation purposes

            byte_out: out std_logic_vector(7 downto 0);

                                data_avaible : out std_logic;

            tx: out std_logic;

                           rx : in std_logic

        );

end INTERCON_P2P;

--! @brief Declaring the components (SYC0001a, SERIALMASTER, uart_wishbone_slave)  

--! @details Just instantiate and connect the various components

architecture Behavioral of INTERCON_P2P is

component SYC0001a

    port(

            -- WISHBONE Interface

            CLK_O:  out std_logic;      --! Clock output

            RST_O:  out std_logic;      --! Reset output

            -- NON-WISHBONE Signals

            EXTCLK: in  std_logic;      --! Clock input

            EXTRST: in  std_logic       --! Reset input

         );

end component SYC0001a;

component SERIALMASTER is

        port(

            -- WISHBONE Signals

            ACK_I:  in  std_logic;                                                              --! Ack input

            ADR_O:  out std_logic_vector( 1 downto 0 );  --! Address output

            CLK_I:  in  std_logic;                                                              --! Clock input

            CYC_O:  out std_logic;                                                              --! Cycle output

            DAT_I:  in  std_logic_vector( 31 downto 0 ); --! Data input

            DAT_O:  out std_logic_vector( 31 downto 0 ); --! Data output

            RST_I:  in  std_logic;                                                              --! Reset input

            SEL_O:  out std_logic;                                                              --! Select output

            STB_O:  out std_logic;                                                              --! Strobe output (Works like a chip select)

            WE_O:   out std_logic;                                                              --! Write enable

                                -- NON-WISHBONE Signals

                                byte_rec : out std_logic_vector(7 downto 0)      --! Signal byte received (Used to debug on the out leds)                        

         );

end component;

component uart_wishbone_slave is

    Port ( RST_I : in  STD_LOGIC;                                                               --! Reset Input

           CLK_I : in  STD_LOGIC;                                                               --! Clock Input

           ADR_I0 : in  STD_LOGIC_VECTOR (1 downto 0);   --! Address input

           DAT_I0 : in  STD_LOGIC_VECTOR (31 downto 0);  --! Data Input 0

           DAT_O0 : out  STD_LOGIC_VECTOR (31 downto 0); --! Data Output 0

           WE_I : in  STD_LOGIC;                                                                        --! Write enable input

           STB_I : in  STD_LOGIC;                                                               --! Strobe input (Works like a chip select)

           ACK_O : out  STD_LOGIC;                                                              --! Ack output

                          -- NON-WISHBONE Signals

                          serial_in : in std_logic;                                                     --! Uart serial input

                          data_Avaible : out std_logic;                                         --! Flag to indicate data avaible                                       

                          serial_out : out std_logic                                                    --! Uart serial output

                          );

end component;

signal CLK : std_logic;

signal RST : std_logic;

signal ACK : std_logic;

signal WE  : std_logic;

signal STB  : std_logic;

signal ADR : std_logic_vector(  1 downto 0 );

signal dataI : std_logic_vector (31 downto 0);

signal dataO : std_logic_vector (31 downto 0);

begin

        --! Instantiate SYC0001a

        uSysCon: component SYC0001a

    port map(

                 CLK_O   =>  CLK,

                 RST_O   =>  RST,

                 EXTCLK  =>  EXTCLK,

                 EXTRST  =>  EXTRST

    );

        --! Instantiate SERIALMASTER

        uMasterSerial : component SERIALMASTER

        port map(

                ACK_I => ACK,

                ADR_O => ADR,

                CLK_I => CLK,

                CYC_O => open,

                DAT_I => dataI,

                DAT_O => dataO,

                RST_I => RST,

                SEL_O => open,

                STB_O => STB,

                byte_rec => byte_out,

                WE_O => WE

        );

        --! Instantiate uart_wishbone_slave

        uUartWishboneSlave: component uart_wishbone_slave

        port map(

                RST_I => RST,

                CLK_I => CLK,

                ADR_I0 => ADR,

                DAT_I0 => dataO,

                DAT_O0 => dataI,

                WE_I => WE,

                STB_I => STB,

                ACK_O => ACK,

                serial_in => rx,

                data_Avaible => open,

                serial_out => tx

   );

end Behavioral;