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AIDA-2020 TLU
Commit dd9fb03f authored by David Cussans's avatar David Cussans
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Moved I2C code into TLU repository and modified build script

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firmware/external/opencores_i2c/i2c_master_bit_ctrl.v 0 → 100644
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firmware/external/opencores_i2c/i2c_master_bit_ctrl.vhd 0 → 100644
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firmware/external/opencores_i2c/i2c_master_byte_ctrl.v 0 → 100644
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firmware/external/opencores_i2c/i2c_master_byte_ctrl.vhd 0 → 100644
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firmware/external/opencores_i2c/i2c_master_defines.v 0 → 100644
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/////////////////////////////////////////////////////////////////////
//// ////
//// WISHBONE rev.B2 compliant I2C Master controller defines ////
//// ////
//// ////
//// Author: Richard Herveille ////
//// richard@asics.ws ////
//// www.asics.ws ////
//// ////
//// Downloaded from: http://www.opencores.org/projects/i2c/ ////
//// ////
/////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001 Richard Herveille ////
//// richard@asics.ws ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer.////
//// ////
//// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY ////
//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ////
//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ////
//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR ////
//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ////
//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ////
//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE ////
//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR ////
//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF ////
//// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ////
//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT ////
//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ////
//// POSSIBILITY OF SUCH DAMAGE. ////
//// ////
/////////////////////////////////////////////////////////////////////
// CVS Log
//
// $Id: i2c_master_defines.v,v 1.3 2001-11-05 11:59:25 rherveille Exp $
//
// $Date: 2001-11-05 11:59:25 $
// $Revision: 1.3 $
// $Author: rherveille $
// $Locker: $
// $State: Exp $
//
// Change History:
// $Log: not supported by cvs2svn $
// I2C registers wishbone addresses
// bitcontroller states
`define I2C_CMD_NOP 4'b0000
`define I2C_CMD_START 4'b0001
`define I2C_CMD_STOP 4'b0010
`define I2C_CMD_WRITE 4'b0100
`define I2C_CMD_READ 4'b1000
\ No newline at end of file
firmware/external/opencores_i2c/i2c_master_registers.vhd 0 → 100644
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----------------------------------------------------------------------
-- >>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<<<
----------------------------------------------------------------------
--///////////////////////////////////////////////////////////////////
--// ////
--// WISHBONE rev.B2 compliant I2C Master registers ////
--// ////
--// ////
--// Author: Richard Herveille ////
--// richard@asics.ws ////
--// www.asics.ws ////
--// ////
--// Downloaded from: http://www.opencores.org/projects/i2c/ ////
--// ////
--///////////////////////////////////////////////////////////////////
--// ////
--// Copyright (C) 2001 Richard Herveille ////
--// richard@asics.ws ////
--// ////
--// This source file may be used and distributed without ////
--// restriction provided that this copyright statement is not ////
--// removed from the file and that any derivative work contains ////
--// the original copyright notice and the associated disclaimer.////
--// ////
--// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY ////
--// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ////
--// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ////
--// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR ////
--// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ////
--// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ////
--// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE ////
--// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR ////
--// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF ////
--// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ////
--// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT ////
--// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ////
--// POSSIBILITY OF SUCH DAMAGE. ////
--// ////
--///////////////////////////////////////////////////////////////////
-- --------------------------------------------------------------------
-- >>>>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
-- --------------------------------------------------------------------
-- Copyright (c) 2008 - 2010 by Lattice Semiconductor Corporation
-- --------------------------------------------------------------------
--
-- Disclaimer:
--
-- This VHDL or Verilog source code is intended as a design reference
-- which illustrates how these types of functions can be implemented.
-- It is the user's responsibility to verify their design for
-- consistency and functionality through the use of formal
-- verification methods. Lattice Semiconductor provides no warranty
-- regarding the use or functionality of this code.
--
-- --------------------------------------------------------------------
--
-- Lattice Semiconductor Corporation
-- 5555 NE Moore Court
-- Hillsboro, OR 97214
-- U.S.A
--
-- TEL: 1-800-Lattice (USA and Canada)
-- 503-268-8001 (other locations)
--
-- web: http://www.latticesemi.com/
-- email: techsupport@latticesemi.com
--
-- --------------------------------------------------------------------
-- Code Revision History :
-- --------------------------------------------------------------------
-- Ver: | Author |Mod. Date |Changes Made:
-- V1.0 |K.P. | 7/09 | Initial ver for VHDL
-- | converted from LSC ref design RD1046
-- --------------------------------------------------------------------
-- --------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
entity i2c_master_registers is
port (
wb_clk_i : in std_logic;
rst_i : in std_logic;
wb_rst_i : in std_logic;
wb_dat_i : in std_logic_vector(7 downto 0);
wb_adr_i : in std_logic_vector(2 downto 0);
wb_wacc : in std_logic;
i2c_al : in std_logic;
i2c_busy : in std_logic;
done : in std_logic;
irxack : in std_logic;
prer : out std_logic_vector(15 downto 0); -- clock prescale register
ctr : out std_logic_vector(7 downto 0); -- control register
txr : out std_logic_vector(7 downto 0); -- transmit register
cr : out std_logic_vector(7 downto 0); -- command register
sr : out std_logic_vector(7 downto 0) -- status register
);
end;
architecture arch of i2c_master_registers is
signal ctr_int : std_logic_vector(7 downto 0);
signal cr_int : std_logic_vector(7 downto 0);
signal al : std_logic; -- status register arbitration lost bit
signal rxack : std_logic; -- received aknowledge from slave
signal tip : std_logic; -- transfer in progress
signal irq_flag : std_logic; -- interrupt pending flag
begin
-- generate prescale regisres, control registers, and transmit register
process(wb_clk_i,rst_i)
begin
if (rst_i = '0') then
prer <= (others => '1');
ctr_int <= (others => '0');
txr <= (others => '0');
elsif rising_edge(wb_clk_i) then
if (wb_rst_i = '1') then
prer <= (others => '1');
ctr_int <= (others => '0');
txr <= (others => '0');
elsif (wb_wacc = '1') then
case (wb_adr_i) is
when "000" => prer(7 downto 0) <= wb_dat_i;
when "001" => prer(15 downto 8) <= wb_dat_i;
when "010" => ctr_int <= wb_dat_i;
when "011" => txr <= wb_dat_i;
when others => NULL;
end case;
end if;
end if;
end process;
ctr <= ctr_int;
-- generate command register (special case)
process(wb_clk_i,rst_i)
begin
if (rst_i = '0') then
cr_int <= (others => '0');
elsif rising_edge(wb_clk_i) then
if (wb_rst_i = '1') then
cr_int <= (others => '0');
elsif (wb_wacc = '1') then
if ((ctr_int(7) = '1') AND (wb_adr_i = "100")) then
cr_int <= wb_dat_i;
end if;
else
if ((done = '1') OR (i2c_al = '1')) then
cr_int(7 downto 4) <= "0000"; -- clear command b
end if; -- or when aribitr
cr_int(2 downto 1) <= "00"; -- reserved bits
cr_int(0) <= '0'; -- clear IRQ_ACK b
end if;
end if;
end process;
cr <= cr_int;
-- generate status register block + interrupt request signal
-- each output will be assigned to corresponding sr register locations on top level
process(wb_clk_i,rst_i)
begin
if (rst_i = '0') then
al <= '0';
rxack <= '0';
tip <= '0';
irq_flag <= '0';
elsif rising_edge(wb_clk_i) then
if (wb_rst_i = '1') then
al <= '0';
rxack <= '0';
tip <= '0';
irq_flag <= '0';
else
al <= i2c_al OR (al AND NOT(cr_int(7)));
rxack <= irxack;
tip <= (cr_int(5) OR cr_int(4));
irq_flag <= (done OR i2c_al OR irq_flag) AND NOT(cr_int(0)); -- interrupt request flag is always generated
end if;
end if;
end process;
sr(7) <= rxack;
sr(6) <= i2c_busy;
sr(5) <= al;
sr(4 downto 2) <= "000"; -- reserved
sr(1) <= tip;
sr(0) <= irq_flag;
end arch;
firmware/external/opencores_i2c/i2c_master_top.v 0 → 100644
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firmware/external/opencores_i2c/i2c_master_top.vhd 0 → 100644
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firmware/scripts/setup_workspace.sh
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......@@ -31,6 +31,12 @@ if [ ! -d "$TLUDir" ]; then
echo "Checked out FMC-MTLU code"
fi
# Check out directory for external cores ( e.g. I2C)
if [ ! -d "external" ]; then
echo "Making link to I2C code"
ln -s fmc-mtlu/firmware/external .
fi
# Check out IPBus code
IPBusDir=`pwd`/IPBus2
if [ ! -d "$IPBusDir" ]; then
......@@ -41,11 +47,7 @@ if [ ! -d "$IPBusDir" ]; then
popd
fi
# Check out directory for external cores ( e.g. I2C)
if [ ! -d "external" ]; then
echo "Checking out I2C code"
svn co http://cactus.hepforge.org/svn/tags/firmware_pre_131_RAL/firmware/external
fi
# Create a directory contain the build products.
WorkDir=workspace
......
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