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// ***************************************************************************
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// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/1ns

module qpsk_demod (
  clk,
  data_qpsk_i,
  data_qpsk_q,
  data_valid,
  data_output
);

  input             clk;
  input   [15:0]    data_qpsk_i;
  input   [15:0]    data_qpsk_q;
  input             data_valid;
  output  [ 1:0]    data_output;

  wire    [15:0]    filtered_data_i;
  wire    [15:0]    filtered_data_q;
  wire    [ 7:0]    demodulated_data;

  // output logic
  assign data_output = demodulated_data[1:0];

  // instantiation
  Raised_Cosine_Receive_Filter i_rx_filter (
    .clk(clk),
    .reset(1'b0),
    .enb_1_1_1(data_valid),
    .In1_re(data_qpsk_i),
    .In1_im(data_qpsk_q),
    .Out1_im(filtered_data_i),
    .Out1_re(filtered_data_q)
  );

  QPSK_Demodulator_Baseband i_qpsk_demod(
    .in0_re(filtered_data_i),
    .in0_im(filtered_data_q),
    .out0(demodulated_data)
  );

endmodule