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author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
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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.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.v')
-rw-r--r-- | fpga/usrp2/control_lib/simple_uart.v | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/fpga/usrp2/control_lib/simple_uart.v b/fpga/usrp2/control_lib/simple_uart.v deleted file mode 100644 index f44a719f4..000000000 --- a/fpga/usrp2/control_lib/simple_uart.v +++ /dev/null @@ -1,79 +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 - #(parameter TXDEPTH = 1, - parameter RXDEPTH = 1, - parameter CLKDIV_DEFAULT = 16'd0) - (input clk_i, input rst_i, - input we_i, input stb_i, input cyc_i, output reg ack_o, - input [2:0] adr_i, input [31:0] dat_i, output reg [31:0] dat_o, - output rx_int_o, output tx_int_o, output tx_o, input rx_i, output baud_o); - - // Register Map - localparam SUART_CLKDIV = 0; - localparam SUART_TXLEVEL = 1; - localparam SUART_RXLEVEL = 2; - localparam SUART_TXCHAR = 3; - localparam SUART_RXCHAR = 4; - - wire wb_acc = cyc_i & stb_i; // WISHBONE access - wire wb_wr = wb_acc & we_i; // WISHBONE write access - - reg [15:0] clkdiv; - wire [7:0] rx_char; - wire tx_fifo_full, rx_fifo_empty; - wire [7:0] tx_fifo_level, rx_fifo_level; - - always @(posedge clk_i) - if (rst_i) - ack_o <= 1'b0; - else - ack_o <= wb_acc & ~ack_o; - - always @(posedge clk_i) - if (rst_i) - clkdiv <= CLKDIV_DEFAULT; - else if (wb_wr) - case(adr_i) - SUART_CLKDIV : clkdiv <= dat_i[15:0]; - endcase // case(adr_i) - - always @(posedge clk_i) - case (adr_i) - SUART_TXLEVEL : dat_o <= tx_fifo_level; - SUART_RXLEVEL : dat_o <= rx_fifo_level; - SUART_RXCHAR : dat_o <= rx_char; - endcase // case(adr_i) - - simple_uart_tx #(.DEPTH(TXDEPTH)) simple_uart_tx - (.clk(clk_i),.rst(rst_i), - .fifo_in(dat_i[7:0]),.fifo_write(ack_o && wb_wr && (adr_i == SUART_TXCHAR)), - .fifo_level(tx_fifo_level),.fifo_full(tx_fifo_full), - .clkdiv(clkdiv),.baudclk(baud_o),.tx(tx_o)); - - simple_uart_rx #(.DEPTH(RXDEPTH)) simple_uart_rx - (.clk(clk_i),.rst(rst_i), - .fifo_out(rx_char),.fifo_read(ack_o && ~wb_wr && (adr_i == SUART_RXCHAR)), - .fifo_level(rx_fifo_level),.fifo_empty(rx_fifo_empty), - .clkdiv(clkdiv),.rx(rx_i)); - - assign tx_int_o = ~tx_fifo_full; - assign rx_int_o = ~rx_fifo_empty; - -endmodule // simple_uart |