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-rw-r--r--fpga/usrp2/gpif/packet_reframer.v70
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diff --git a/fpga/usrp2/gpif/packet_reframer.v b/fpga/usrp2/gpif/packet_reframer.v
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--- a/fpga/usrp2/gpif/packet_reframer.v
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-//
-// Copyright 2011-2012 Ettus Research LLC
-//
-// This program 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.
-//
-// This program 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/>.
-//
-
-
-// Join vita packets longer than one GPIF frame
-
-module packet_reframer
- (input clk, input reset, input clear,
- input [15:0] data_i,
- input src_rdy_i,
- output dst_rdy_o,
- output [18:0] data_o,
- output src_rdy_o,
- input dst_rdy_i,
- output reg state,
- output eof_out,
- output reg [15:0] length);
-
- //reg state;
- //reg [15:0] length;
-
- localparam RF_IDLE = 0;
- localparam RF_PKT = 1;
-
- always @(posedge clk)
- if(reset | clear)
- state <= RF_IDLE;
- else
- if(src_rdy_i & dst_rdy_i)
- case(state)
- RF_IDLE :
- begin
- length <= {data_i[14:0],1'b0};
- state <= RF_PKT;
- end
- RF_PKT :
- begin
- if(eof_out) state <= RF_IDLE;
- length <= length - 1;
- end
- endcase // case (state)
-
- assign dst_rdy_o = dst_rdy_i; // this is a little pessimistic but ok
- assign src_rdy_o = src_rdy_i;
-
- wire occ_out = 0;
- assign eof_out = (state == RF_PKT) & (length == 2);
- wire sof_out = (state == RF_IDLE);
- assign data_o = {occ_out, eof_out, sof_out, data_i[15:0]};
-
-
-endmodule // packet_reframer
-
-
-
-