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authorMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
committerMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
commitfd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch)
tree3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/control_lib/wb_bus_writer.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/control_lib/wb_bus_writer.v')
-rw-r--r--fpga/usrp2/control_lib/wb_bus_writer.v74
1 files changed, 0 insertions, 74 deletions
diff --git a/fpga/usrp2/control_lib/wb_bus_writer.v b/fpga/usrp2/control_lib/wb_bus_writer.v
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-//
-// Copyright 2011 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/>.
-//
-
-
-// wb_bus_writer
-//
-// WB Bus Master device to send a sequence of single-word transactions
-// based on a list in a RAM or ROM (FASM interface)
-// ROM data format is {WB_ADDR[15:0],WB_DATA[31:0]}
-// continues until it gets an all-1s entry
-
-module wb_bus_writer (input start,
- output done,
- output reg [15:0] rom_addr,
- input [47:0] rom_data,
- // WB Master Interface, don't need wb_dat_i
- input wb_clk_i,
- input wb_rst_i,
- output [31:0] wb_dat_o,
- input wb_ack_i,
- output [15:0] wb_adr_o,
- output wb_cyc_o,
- output [3:0] wb_sel_o,
- output wb_stb_o,
- output wb_we_o
- );
-
-`define IDLE 0
-`define READ 1
-
- reg [3:0] state;
-
- assign done = (state != `IDLE) && (&rom_data); // Done when we see all 1s
-
- always @(posedge wb_clk_i)
- if(wb_rst_i)
- begin
- rom_addr <= #1 0;
- state <= #1 0;
- end
- else if(start)
- begin
- rom_addr <= #1 0;
- state <= #1 `READ;
- end
- else if((state == `READ) && wb_ack_i)
- if(done)
- state <= #1 `IDLE;
- else
- rom_addr <= #1 rom_addr + 1;
-
- assign wb_dat_o = rom_data[31:0];
- assign wb_adr_o = rom_data[47:32];
- assign wb_sel_o = 4'b1111; // All writes are the full 32 bits
-
- assign wb_cyc_o = !done & (state != `IDLE);
- assign wb_stb_o = !done & (state != `IDLE);
- assign wb_we_o = !done & (state != `IDLE);
-
-endmodule // wb_bus_writer