//#############################################################################
//# Purpose: Serial to Parallel Converter                                     #
//#############################################################################
//# Author:   Andreas Olofsson                                                #
//# License:  MIT (see below)                                                 # 
//#############################################################################

module oh_ser2par (/*AUTOARG*/
   // Outputs
   dout,
   // Inputs
   clk, din, lsbfirst, shift
   );

   //###########################
   //# INTERFACE
   //###########################

   // parameters
   parameter  PW   = 64;             // parallel packet width
   parameter  SW   = 1;              // serial packet width
   localparam CW   = $clog2(PW/SW);  // serialization factor (for counter)
   
   // reset, clk
   input           clk;        // sampling clock   
   
   //data interface
   input [SW-1:0]  din;        // serial data
   output [PW-1:0] dout;       // parallel data  
   
   // control interface
   input 	   lsbfirst;   // lsb first order
   input 	   shift;      // shift the shifter
   
   //##############################
   //# BODY
   //##############################

   reg [PW-1:0]    dout;
   reg [CW-1:0]    count;
   wire [PW-1:0]   shiftdata;

   always @ (posedge clk)
     if(shift & lsbfirst)
       dout[PW-1:0] <= {din[SW-1:0],dout[PW-1:SW]};
     else if(shift)
       dout[PW-1:0] <= {dout[PW-SW-1:0],din[SW-1:0]};
   
endmodule // oh_ser2par

///////////////////////////////////////////////////////////////////////////////
// The MIT License (MIT)                                                     //
//                                                                           //
// Copyright (c) 2015-2016, Adapteva, Inc.                                   //
//                                                                           //
// 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 SOFTWARE.                                //
//                                                                           //  
///////////////////////////////////////////////////////////////////////////////