diff options
Diffstat (limited to 'fpga/usrp2/control_lib/setting_reg.v')
-rw-r--r-- | fpga/usrp2/control_lib/setting_reg.v | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/fpga/usrp2/control_lib/setting_reg.v b/fpga/usrp2/control_lib/setting_reg.v new file mode 100644 index 000000000..e4c84d910 --- /dev/null +++ b/fpga/usrp2/control_lib/setting_reg.v @@ -0,0 +1,42 @@ +// +// 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 setting_reg + #(parameter my_addr = 0, + parameter width = 32, + parameter at_reset=32'd0) + (input clk, input rst, input strobe, input wire [7:0] addr, + input wire [31:0] in, output reg [width-1:0] out, output reg changed); + + always @(posedge clk) + if(rst) + begin + out <= at_reset; + changed <= 1'b0; + end + else + if(strobe & (my_addr==addr)) + begin + out <= in; + changed <= 1'b1; + end + else + changed <= 1'b0; + +endmodule // setting_reg |