diff options
author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
---|---|---|
committer | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
commit | fd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch) | |
tree | 3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp2/control_lib/simple_uart_tx.v | |
parent | 3b66804e41891e358c790b453a7a59ec7462dba4 (diff) | |
download | uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2 uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip |
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp2/control_lib/simple_uart_tx.v')
-rw-r--r-- | fpga/usrp2/control_lib/simple_uart_tx.v | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/fpga/usrp2/control_lib/simple_uart_tx.v b/fpga/usrp2/control_lib/simple_uart_tx.v deleted file mode 100644 index f38460bd4..000000000 --- a/fpga/usrp2/control_lib/simple_uart_tx.v +++ /dev/null @@ -1,77 +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 simple_uart_tx - #(parameter DEPTH=0) - (input clk, input rst, - input [7:0] fifo_in, input fifo_write, output [7:0] fifo_level, output fifo_full, - input [15:0] clkdiv, output baudclk, output reg tx); - - reg [15:0] baud_ctr; - reg [3:0] bit_ctr; - - wire read, empty; - wire [7:0] char_to_send; - - medfifo #(.WIDTH(8),.DEPTH(DEPTH)) fifo - (.clk(clk),.rst(rst), - .datain(fifo_in),.write(fifo_write),.full(fifo_full), - .dataout(char_to_send),.read(read),.empty(empty), - .clear(0),.space(fifo_level),.occupied() ); - - always @(posedge clk) - if(rst) - baud_ctr <= 0; - else if (baud_ctr >= clkdiv) - baud_ctr <= 0; - else - baud_ctr <= baud_ctr + 1; - - always @(posedge clk) - if(rst) - bit_ctr <= 0; - else if(baud_ctr == clkdiv) - if(bit_ctr == 9) - bit_ctr <= 0; - else if(bit_ctr != 0) - bit_ctr <= bit_ctr + 1; - else if(~empty) - bit_ctr <= 1; - - always @(posedge clk) - if(rst) - tx <= 1; - else - case(bit_ctr) - 0 : tx <= 1; - 1 : tx <= 0; - 2 : tx <= char_to_send[0]; - 3 : tx <= char_to_send[1]; - 4 : tx <= char_to_send[2]; - 5 : tx <= char_to_send[3]; - 6 : tx <= char_to_send[4]; - 7 : tx <= char_to_send[5]; - 8 : tx <= char_to_send[6]; - 9 : tx <= char_to_send[7]; - default : tx <= 1; - endcase // case(bit_ctr) - - assign read = (bit_ctr == 9) && (baud_ctr == clkdiv); - assign baudclk = (baud_ctr == 1); // Only for debug purposes - -endmodule // simple_uart_tx |