Create initial release of minispartan6 audio project

src_v/audio/audio_dac.v

@@ -0,0 +1,125 @@
+//-----------------------------------------------------------------
+//                      Audio Controller
+//                           V0.1
+//                     Ultra-Embedded.com
+//                     Copyright 2012-2019
+//
+//                 Email: [email protected]
+//
+//                         License: GPL
+// If you would like a version with a more permissive license for
+// use in closed source commercial applications please contact me
+// for details.
+//-----------------------------------------------------------------
+//
+// This file is open source HDL; 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 2 of 
+// the License, or (at your option) any later version.
+//
+// This file 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 file; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA
+//-----------------------------------------------------------------
+
+//-----------------------------------------------------------------
+//                          Generated File
+//-----------------------------------------------------------------
+
+module audio_dac
+(
+    // Inputs
+     input           clk_i
+    ,input           rst_i
+    ,input           audio_clk_i
+    ,input           inport_tvalid_i
+    ,input  [ 31:0]  inport_tdata_i
+    ,input  [  3:0]  inport_tstrb_i
+    ,input  [  3:0]  inport_tdest_i
+    ,input           inport_tlast_i
+
+    // Outputs
+    ,output          inport_tready_o
+    ,output          audio_l_o
+    ,output          audio_r_o
+);
+
+
+
+//-----------------------------------------------------------------
+// Params
+//-----------------------------------------------------------------
+localparam CLK_RATE_KHZ          = 50000;
+localparam AUDIO_RATE            = 44100;
+
+// Generated params
+localparam WHOLE_CYCLES          = (CLK_RATE_KHZ*1000) / (AUDIO_RATE*128);
+localparam ERROR_BASE            = 10000;
+localparam [63:0] ERRORS_PER_BIT = ((CLK_RATE_KHZ * 1000 * ERROR_BASE) / (AUDIO_RATE*128)) - (WHOLE_CYCLES * ERROR_BASE);
+
+//-----------------------------------------------------------------
+// External clock source
+//-----------------------------------------------------------------
+wire    bit_clock_w;
+
+assign bit_clock_w = audio_clk_i;
+
+//-----------------------------------------------------------------
+// Buffer
+//-----------------------------------------------------------------
+reg [15:0] left_q;
+reg [15:0] right_q;
+reg        pop_q;
+
+always @ (posedge rst_i or posedge clk_i )
+begin
+   if (rst_i)
+   begin
+        right_q <= 16'b0;
+        left_q  <= 16'b0;
+        pop_q   <= 1'b0;
+   end
+   else if (bit_clock_w && inport_tvalid_i)
+   begin
+        {right_q, left_q} <= inport_tdata_i;
+        pop_q   <= 1'b1;
+   end
+   else
+        pop_q   <= 1'b0;
+end
+
+assign inport_tready_o = pop_q;
+
+//-----------------------------------------------------------------
+// DAC instances
+//-----------------------------------------------------------------
+sigma_dac
+#( .NBITS(16) )
+u_dac_l
+(
+    .clk_i(clk_i),
+    .rst_i(rst_i),
+
+    .din_i(left_q),
+    .dout_o(audio_l_o)
+);
+
+sigma_dac
+#( .NBITS(16) )
+u_dac_r
+(
+    .clk_i(clk_i),
+    .rst_i(rst_i),
+
+    .din_i(right_q),
+    .dout_o(audio_r_o)
+);
+
+
+endmodule

src_v/audio/audio_defs.v

@@ -0,0 +1,133 @@
+//-----------------------------------------------------------------
+//                      Audio Controller
+//                           V0.1
+//                     Ultra-Embedded.com
+//                     Copyright 2012-2019
+//
+//                 Email: [email protected]
+//
+//                         License: GPL
+// If you would like a version with a more permissive license for
+// use in closed source commercial applications please contact me
+// for details.
+//-----------------------------------------------------------------
+//
+// This file is open source HDL; 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 2 of 
+// the License, or (at your option) any later version.
+//
+// This file 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 file; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA
+//-----------------------------------------------------------------
+
+//-----------------------------------------------------------------
+//                          Generated File
+//-----------------------------------------------------------------
+
+`define AUDIO_CFG    8'h0
+
+    `define AUDIO_CFG_INT_THRESHOLD_DEFAULT    0
+    `define AUDIO_CFG_INT_THRESHOLD_B          0
+    `define AUDIO_CFG_INT_THRESHOLD_T          15
+    `define AUDIO_CFG_INT_THRESHOLD_W          16
+    `define AUDIO_CFG_INT_THRESHOLD_R          15:0
+
+    `define AUDIO_CFG_BYTE_SWAP      16
+    `define AUDIO_CFG_BYTE_SWAP_DEFAULT    0
+    `define AUDIO_CFG_BYTE_SWAP_B          16
+    `define AUDIO_CFG_BYTE_SWAP_T          16
+    `define AUDIO_CFG_BYTE_SWAP_W          1
+    `define AUDIO_CFG_BYTE_SWAP_R          16:16
+
+    `define AUDIO_CFG_CH_SWAP      17
+    `define AUDIO_CFG_CH_SWAP_DEFAULT    0
+    `define AUDIO_CFG_CH_SWAP_B          17
+    `define AUDIO_CFG_CH_SWAP_T          17
+    `define AUDIO_CFG_CH_SWAP_W          1
+    `define AUDIO_CFG_CH_SWAP_R          17:17
+
+    `define AUDIO_CFG_TARGET_DEFAULT    0
+    `define AUDIO_CFG_TARGET_B          18
+    `define AUDIO_CFG_TARGET_T          19
+    `define AUDIO_CFG_TARGET_W          2
+    `define AUDIO_CFG_TARGET_R          19:18
+
+    `define AUDIO_CFG_VOL_CTRL_DEFAULT    0
+    `define AUDIO_CFG_VOL_CTRL_B          24
+    `define AUDIO_CFG_VOL_CTRL_T          26
+    `define AUDIO_CFG_VOL_CTRL_W          3
+    `define AUDIO_CFG_VOL_CTRL_R          26:24
+
+    `define AUDIO_CFG_BUFFER_RST      31
+    `define AUDIO_CFG_BUFFER_RST_DEFAULT    0
+    `define AUDIO_CFG_BUFFER_RST_B          31
+    `define AUDIO_CFG_BUFFER_RST_T          31
+    `define AUDIO_CFG_BUFFER_RST_W          1
+    `define AUDIO_CFG_BUFFER_RST_R          31:31
+
+`define AUDIO_STATUS    8'h4
+
+    `define AUDIO_STATUS_LEVEL_DEFAULT    0
+    `define AUDIO_STATUS_LEVEL_B          16
+    `define AUDIO_STATUS_LEVEL_T          31
+    `define AUDIO_STATUS_LEVEL_W          16
+    `define AUDIO_STATUS_LEVEL_R          31:16
+
+    `define AUDIO_STATUS_FULL      1
+    `define AUDIO_STATUS_FULL_DEFAULT    0
+    `define AUDIO_STATUS_FULL_B          1
+    `define AUDIO_STATUS_FULL_T          1
+    `define AUDIO_STATUS_FULL_W          1
+    `define AUDIO_STATUS_FULL_R          1:1
+
+    `define AUDIO_STATUS_EMPTY      0
+    `define AUDIO_STATUS_EMPTY_DEFAULT    0
+    `define AUDIO_STATUS_EMPTY_B          0
+    `define AUDIO_STATUS_EMPTY_T          0
+    `define AUDIO_STATUS_EMPTY_W          1
+    `define AUDIO_STATUS_EMPTY_R          0:0
+
+`define AUDIO_CLK_DIV    8'h8
+
+    `define AUDIO_CLK_DIV_WHOLE_CYCLES_DEFAULT    0
+    `define AUDIO_CLK_DIV_WHOLE_CYCLES_B          0
+    `define AUDIO_CLK_DIV_WHOLE_CYCLES_T          15
+    `define AUDIO_CLK_DIV_WHOLE_CYCLES_W          16
+    `define AUDIO_CLK_DIV_WHOLE_CYCLES_R          15:0
+
+`define AUDIO_CLK_FRAC    8'hc
+
+    `define AUDIO_CLK_FRAC_NUMERATOR_DEFAULT    0
+    `define AUDIO_CLK_FRAC_NUMERATOR_B          0
+    `define AUDIO_CLK_FRAC_NUMERATOR_T          15
+    `define AUDIO_CLK_FRAC_NUMERATOR_W          16
+    `define AUDIO_CLK_FRAC_NUMERATOR_R          15:0
+
+    `define AUDIO_CLK_FRAC_DENOMINATOR_DEFAULT    0
+    `define AUDIO_CLK_FRAC_DENOMINATOR_B          16
+    `define AUDIO_CLK_FRAC_DENOMINATOR_T          31
+    `define AUDIO_CLK_FRAC_DENOMINATOR_W          16
+    `define AUDIO_CLK_FRAC_DENOMINATOR_R          31:16
+
+`define AUDIO_FIFO_WRITE    8'h20
+
+    `define AUDIO_FIFO_WRITE_CH_B_DEFAULT    0
+    `define AUDIO_FIFO_WRITE_CH_B_B          0
+    `define AUDIO_FIFO_WRITE_CH_B_T          15
+    `define AUDIO_FIFO_WRITE_CH_B_W          16
+    `define AUDIO_FIFO_WRITE_CH_B_R          15:0
+
+    `define AUDIO_FIFO_WRITE_CH_A_DEFAULT    0
+    `define AUDIO_FIFO_WRITE_CH_A_B          16
+    `define AUDIO_FIFO_WRITE_CH_A_T          31
+    `define AUDIO_FIFO_WRITE_CH_A_W          16
+    `define AUDIO_FIFO_WRITE_CH_A_R          31:16
+