aboutsummaryrefslogtreecommitdiffstats
path: root/fpga/usrp2/models/cpld_model.v
diff options
context:
space:
mode:
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/models/cpld_model.v
parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
downloaduhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz
uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2
uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/models/cpld_model.v')
-rw-r--r--fpga/usrp2/models/cpld_model.v113
1 files changed, 0 insertions, 113 deletions
diff --git a/fpga/usrp2/models/cpld_model.v b/fpga/usrp2/models/cpld_model.v
deleted file mode 100644
index 900577852..000000000
--- a/fpga/usrp2/models/cpld_model.v
+++ /dev/null
@@ -1,113 +0,0 @@
-//
-// 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/>.
-//
-
-
-module cpld_model
- (input aux_clk, input start, input mode, input done,
- output dout, output reg sclk, output detached);
-
- reg [7:0] rom[0:65535];
-
- reg [15:0] addr;
- reg [7:0] data;
- assign dout = data[7];
-
- reg [2:0] state, bitcnt;
-
- localparam IDLE = 3'd0;
- localparam READ = 3'd1;
- localparam BIT1 = 3'd2;
- localparam BIT2 = 3'd3;
- localparam DONE = 3'd4;
- localparam DETACHED = 3'd5;
- localparam ERROR = 3'd7;
-
- integer i;
- reg [1023:0] ROMFile;
-
- initial begin
- for (i=0;i<65536;i=i+1) begin
- rom[i] <= 32'h0;
- end
- if ( !$value$plusargs( "rom=%s", ROMFile ) )
- begin
- $display( "Using default ROM file, 'flash.rom'" );
- ROMFile = "flash.rom";
- end
- else
- $display( "Using %s as ROM file.", ROMFile);
-
- #1 $readmemh( ROMFile,rom );
- end
-
- initial addr = 16'd0;
- initial data = 8'd0;
- initial state = IDLE;
- initial bitcnt = 3'd0;
- initial sclk = 1'b0;
-
- always @(posedge aux_clk)
- case(state)
- IDLE :
- if(start)
- if(~mode)
- state <= READ;
- else
- state <= ERROR;
- READ :
- if(done)
- state <= DONE;
- else
- begin
- data <= rom[addr];
- addr <= addr + 1;
- bitcnt <= 3'd0;
- if(addr==16'hFFFF)
- state <= ERROR;
- else
- state <= BIT1;
- end // else: !if(start)
- BIT1 :
- begin
- sclk <= 1'b1;
- state <= BIT2;
- end
- BIT2 :
- begin
- sclk <= 1'b0;
- data <= {data[6:0],1'b0};
- bitcnt <= bitcnt + 1;
- if(bitcnt==7)
- state <= READ;
- else
- state <=BIT1;
- end
- DONE :
- begin
- if(start)
- state <= ERROR;
- else
- state <= DETACHED;
- end
- DETACHED :
- if(start)
- state <= ERROR;
- endcase // case(state)
-
- assign detached = (state == DETACHED) || (state == IDLE);
-
-endmodule // cpld_model