Subversion Repositories m16c5x

///////////////////////////////////////////////////////////////////////////////

//

//  Copyright 2008-2013 by Michael A. Morris, dba M. A. Morris & Associates

//

//  All rights reserved. The source code contained herein is publicly released

//  under the terms and conditions of the GNU Lesser Public License. No part of

//  this source code may be reproduced or transmitted in any form or by any

//  means, electronic or mechanical, including photocopying, recording, or any

//  information storage and retrieval system in violation of the license under

//  which the source code is released.

//

//  The source code contained herein is free; it may be redistributed and/or 

//  modified in accordance with the terms of the GNU Lesser General Public

//  License as published by the Free Software Foundation; either version 2.1 of

//  the GNU Lesser General Public License, or any later version.

//

//  The source code contained herein is freely released WITHOUT ANY WARRANTY;

//  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A

//  PARTICULAR PURPOSE. (Refer to the GNU Lesser General Public License for

//  more details.)

//

//  A copy of the GNU Lesser General Public License should have been received

//  along with the source code contained herein; if not, a copy can be obtained

//  by writing to:

//

//  Free Software Foundation, Inc.

//  51 Franklin Street, Fifth Floor

//  Boston, MA  02110-1301 USA

//

//  Further, no use of this source code is permitted in any form or means

//  without inclusion of this banner prominently in any derived works. 

//

//  Michael A. Morris

//  Huntsville, AL

//

///////////////////////////////////////////////////////////////////////////////`timescale 1ns / 1ps

`timescale 1ns / 1ps

///////////////////////////////////////////////////////////////////////////////

// Company:         M. A. Morris & Associates

// Engineer:        Michael A. Morris

//

// Create Date:     09:03:15 05/10/2008

// Design Name:     LTAS 

// Module Name:     C:/XProjects/ISE10.1i/LTAS/tb_SSPx_Slv.v

// Project Name:    LTAS 

// Target Devices:  XC3S700AN-5FFG484I 

// Tool versions:   ISE 10.1i SP3 

//

// Description: This test bench is intended to test the SSP Slave interface

//              that will be used with the LPC2148 ARM microcomputer.

//

// Verilog Test Fixture created by ISE for module: SSPx_Slv

//

// Dependencies:

// 

// Revision History:

//

//  0.01    08E10   MAM     File Created

//

// Additional Comments: 

//

///////////////////////////////////////////////////////////////////////////////

module tb_SSPx_Slv_v;

// UUT Ports

reg     Rst;

reg     SSEL;

reg     SCK;

reg     MOSI;

wire    MISO;

wire    [2:0] RA;

wire    WnR;

wire    En;

wire    EOC;

wire    [11:0] DI;

reg     [11:0] DO;

wire    [3:0] BC;

// Instantiate the Unit Under Test (UUT)

SSPx_Slv    uut (

                .Rst(Rst),

                .SSEL(SSEL),

                .SCK(SCK),

                .MOSI(MOSI),

                .MISO(MISO),

                .RA(RA),

                .WnR(WnR),

                .En(En),

                .EOC(EOC),

                .DI(DI),

                .DO(DO),

                .BC(BC)

            );

initial begin

    // Initialize Inputs

    Rst  = 1;

    SSEL = 0;

    SCK  = 0;

    MOSI = 0;

    DO   = 16'b0;

    // Wait 100 ns for global reset to finish

    #100 Rst = 0;

    // Add stimulus here

    #100;

    SSP(3'h7, 1'b1, 12'h556, 12'hAA9);

end

//  Task SSP Write

task SSP;

    input   [2:0] RAIn;

    input   Cmd;

    input   [11:0] DIn;

    input   [11:0] DOut;

    begin

           SSEL = 1; MOSI = RAIn[2]; DO = DOut;

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = RAIn[1];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = RAIn[0];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = Cmd;

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[11];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[10];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 9];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 8];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 7];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 6];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 5];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 4];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 3];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 2];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 1];

        #5 SCK  = 1;

        #5 SCK  = 0; MOSI = DIn[ 0];

        #5 SCK  = 1;

        #5 SCK  = 0; SSEL = 0;

        #10;

    end

endtask

endmodule