Added wrappers for two more primitives

/*******************************************************************************

 * Module: oddr

 * Date:2014-05-13  

 * Author: Andrey Filippov

 * Description: ODDR wrapper

 *

 * Copyright (c) 2014 Elphel, Inc.

 * oddr.v is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 *  oddr.v is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/> .

 *******************************************************************************/

`timescale 1ns/1ps

module  oddr#(

        parameter DDR_CLK_EDGE = "OPPOSITE_EDGE",

        parameter INIT          = 1'b0,

        parameter SRTYPE = "SYNC"

)(

    input  clk,

    input  ce,

    input  rst,

    input  set,

    input [1:0] din,

    output dq

);

    /* Instance template for module ODDR */

    ODDR #(

        .DDR_CLK_EDGE(DDR_CLK_EDGE),

        .INIT(INIT),

        .SRTYPE(SRTYPE)

    ) ODDR_i (

        .Q(dq), // output 

        .C(clk), // input 

        .CE(ce), // input 

        .D1(din[0]), // input 

        .D2(din[1]), // input 

        .R(rst), // input 

        .S(set) // input 

    );

endmodule

/*******************************************************************************

 * Module: oddr_ds

 * Date:2014-05-13  

 * Author: Andrey Filippov

 * Description: wrapper for ODDR+OBUFDS

 *

 * Copyright (c) 2014 Elphel, Inc.

 * oddr_ds.v is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 *  oddr_ds.v is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/> .

 *******************************************************************************/

`timescale 1ns/1ps

module  oddr_ds # (

        parameter CAPACITANCE ="DONT_CARE",

        parameter IOSTANDARD = "DIFF_SSTL15",

        parameter SLEW =       "SLOW",

        parameter DDR_CLK_EDGE = "OPPOSITE_EDGE",

        parameter INIT          = 1'b0,

        parameter SRTYPE = "SYNC"

)(

    input  clk,

    input  ce,

    input  rst,

    input  set,

    input [1:0] din,

    output dq,

    output ndq

);

    wire idq;

    /* Instance template for module ODDR */

    ODDR #(

        .DDR_CLK_EDGE(DDR_CLK_EDGE),

        .INIT(INIT),

        .SRTYPE(SRTYPE)

    ) ODDR_i (

        .Q(idq), // output 

        .C(clk), // input 

        .CE(ce), // input 

        .D1(din[0]), // input 

        .D2(din[1]), // input 

        .R(rst), // input 

        .S(set) // input 

    );

    /* Instance template for module OBUFDS */

    OBUFDS #(

        .CAPACITANCE(CAPACITANCE),

        .IOSTANDARD(IOSTANDARD),

        .SLEW(SLEW)

    ) OBUFDS_i (

        .O(dq), // output 

        .OB(ndq), // output 

        .I(idq) // input 

    );

endmodule

endmodule