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-rw-r--r--tests/iwls2005/spi/spi_clgen.v108
-rw-r--r--tests/iwls2005/spi/spi_defines.v159
-rw-r--r--tests/iwls2005/spi/spi_shift.v238
-rw-r--r--tests/iwls2005/spi/spi_top.v287
-rw-r--r--tests/iwls2005/spi/timescale.v2
5 files changed, 0 insertions, 794 deletions
diff --git a/tests/iwls2005/spi/spi_clgen.v b/tests/iwls2005/spi/spi_clgen.v
deleted file mode 100644
index 7bc4f6e5..00000000
--- a/tests/iwls2005/spi/spi_clgen.v
+++ /dev/null
@@ -1,108 +0,0 @@
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// spi_clgen.v ////
-//// ////
-//// This file is part of the SPI IP core project ////
-//// http://www.opencores.org/projects/spi/ ////
-//// ////
-//// Author(s): ////
-//// - Simon Srot (simons@opencores.org) ////
-//// ////
-//// All additional information is avaliable in the Readme.txt ////
-//// file. ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2002 Authors ////
-//// ////
-//// This source file may be used and distributed without ////
-//// restriction provided that this copyright statement is not ////
-//// removed from the file and that any derivative work contains ////
-//// the original copyright notice and the associated disclaimer. ////
-//// ////
-//// This source file is free software; you can redistribute it ////
-//// and/or modify it under the terms of the GNU Lesser General ////
-//// Public License as published by the Free Software Foundation; ////
-//// either version 2.1 of the License, or (at your option) any ////
-//// later version. ////
-//// ////
-//// This source 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 Lesser General Public License for more ////
-//// details. ////
-//// ////
-//// You should have received a copy of the GNU Lesser General ////
-//// Public License along with this source; if not, download it ////
-//// from http://www.opencores.org/lgpl.shtml ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-
-`include "spi_defines.v"
-`include "timescale.v"
-
-module spi_clgen (clk_in, rst, go, enable, last_clk, divider, clk_out, pos_edge, neg_edge);
-
- parameter Tp = 1;
-
- input clk_in; // input clock (system clock)
- input rst; // reset
- input enable; // clock enable
- input go; // start transfer
- input last_clk; // last clock
- input [`SPI_DIVIDER_LEN-1:0] divider; // clock divider (output clock is divided by this value)
- output clk_out; // output clock
- output pos_edge; // pulse marking positive edge of clk_out
- output neg_edge; // pulse marking negative edge of clk_out
-
- reg clk_out;
- reg pos_edge;
- reg neg_edge;
-
- reg [`SPI_DIVIDER_LEN-1:0] cnt; // clock counter
- wire cnt_zero; // conter is equal to zero
- wire cnt_one; // conter is equal to one
-
-
- assign cnt_zero = cnt == {`SPI_DIVIDER_LEN{1'b0}};
- assign cnt_one = cnt == {{`SPI_DIVIDER_LEN-1{1'b0}}, 1'b1};
-
- // Counter counts half period
- always @(posedge clk_in or posedge rst)
- begin
- if(rst)
- cnt <= #Tp {`SPI_DIVIDER_LEN{1'b1}};
- else
- begin
- if(!enable || cnt_zero)
- cnt <= #Tp divider;
- else
- cnt <= #Tp cnt - {{`SPI_DIVIDER_LEN-1{1'b0}}, 1'b1};
- end
- end
-
- // clk_out is asserted every other half period
- always @(posedge clk_in or posedge rst)
- begin
- if(rst)
- clk_out <= #Tp 1'b0;
- else
- clk_out <= #Tp (enable && cnt_zero && (!last_clk || clk_out)) ? ~clk_out : clk_out;
- end
-
- // Pos and neg edge signals
- always @(posedge clk_in or posedge rst)
- begin
- if(rst)
- begin
- pos_edge <= #Tp 1'b0;
- neg_edge <= #Tp 1'b0;
- end
- else
- begin
- pos_edge <= #Tp (enable && !clk_out && cnt_one) || (!(|divider) && clk_out) || (!(|divider) && go && !enable);
- neg_edge <= #Tp (enable && clk_out && cnt_one) || (!(|divider) && !clk_out && enable);
- end
- end
-endmodule
-
diff --git a/tests/iwls2005/spi/spi_defines.v b/tests/iwls2005/spi/spi_defines.v
deleted file mode 100644
index a6925918..00000000
--- a/tests/iwls2005/spi/spi_defines.v
+++ /dev/null
@@ -1,159 +0,0 @@
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// spi_define.v ////
-//// ////
-//// This file is part of the SPI IP core project ////
-//// http://www.opencores.org/projects/spi/ ////
-//// ////
-//// Author(s): ////
-//// - Simon Srot (simons@opencores.org) ////
-//// ////
-//// All additional information is avaliable in the Readme.txt ////
-//// file. ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2002 Authors ////
-//// ////
-//// This source file may be used and distributed without ////
-//// restriction provided that this copyright statement is not ////
-//// removed from the file and that any derivative work contains ////
-//// the original copyright notice and the associated disclaimer. ////
-//// ////
-//// This source file is free software; you can redistribute it ////
-//// and/or modify it under the terms of the GNU Lesser General ////
-//// Public License as published by the Free Software Foundation; ////
-//// either version 2.1 of the License, or (at your option) any ////
-//// later version. ////
-//// ////
-//// This source 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 Lesser General Public License for more ////
-//// details. ////
-//// ////
-//// You should have received a copy of the GNU Lesser General ////
-//// Public License along with this source; if not, download it ////
-//// from http://www.opencores.org/lgpl.shtml ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-
-//
-// Number of bits used for devider register. If used in system with
-// low frequency of system clock this can be reduced.
-// Use SPI_DIVIDER_LEN for fine tuning theexact number.
-//
-//`define SPI_DIVIDER_LEN_8
-`define SPI_DIVIDER_LEN_16
-//`define SPI_DIVIDER_LEN_24
-//`define SPI_DIVIDER_LEN_32
-
-`ifdef SPI_DIVIDER_LEN_8
- `define SPI_DIVIDER_LEN 8 // Can be set from 1 to 8
-`endif
-`ifdef SPI_DIVIDER_LEN_16
- `define SPI_DIVIDER_LEN 16 // Can be set from 9 to 16
-`endif
-`ifdef SPI_DIVIDER_LEN_24
- `define SPI_DIVIDER_LEN 24 // Can be set from 17 to 24
-`endif
-`ifdef SPI_DIVIDER_LEN_32
- `define SPI_DIVIDER_LEN 32 // Can be set from 25 to 32
-`endif
-
-//
-// Maximum nuber of bits that can be send/received at once.
-// Use SPI_MAX_CHAR for fine tuning the exact number, when using
-// SPI_MAX_CHAR_32, SPI_MAX_CHAR_24, SPI_MAX_CHAR_16, SPI_MAX_CHAR_8.
-//
-`define SPI_MAX_CHAR_128
-//`define SPI_MAX_CHAR_64
-//`define SPI_MAX_CHAR_32
-//`define SPI_MAX_CHAR_24
-//`define SPI_MAX_CHAR_16
-//`define SPI_MAX_CHAR_8
-
-`ifdef SPI_MAX_CHAR_128
- `define SPI_MAX_CHAR 128 // Can only be set to 128
- `define SPI_CHAR_LEN_BITS 7
-`endif
-`ifdef SPI_MAX_CHAR_64
- `define SPI_MAX_CHAR 64 // Can only be set to 64
- `define SPI_CHAR_LEN_BITS 6
-`endif
-`ifdef SPI_MAX_CHAR_32
- `define SPI_MAX_CHAR 32 // Can be set from 25 to 32
- `define SPI_CHAR_LEN_BITS 5
-`endif
-`ifdef SPI_MAX_CHAR_24
- `define SPI_MAX_CHAR 24 // Can be set from 17 to 24
- `define SPI_CHAR_LEN_BITS 5
-`endif
-`ifdef SPI_MAX_CHAR_16
- `define SPI_MAX_CHAR 16 // Can be set from 9 to 16
- `define SPI_CHAR_LEN_BITS 4
-`endif
-`ifdef SPI_MAX_CHAR_8
- `define SPI_MAX_CHAR 8 // Can be set from 1 to 8
- `define SPI_CHAR_LEN_BITS 3
-`endif
-
-//
-// Number of device select signals. Use SPI_SS_NB for fine tuning the
-// exact number.
-//
-`define SPI_SS_NB_8
-//`define SPI_SS_NB_16
-//`define SPI_SS_NB_24
-//`define SPI_SS_NB_32
-
-`ifdef SPI_SS_NB_8
- `define SPI_SS_NB 8 // Can be set from 1 to 8
-`endif
-`ifdef SPI_SS_NB_16
- `define SPI_SS_NB 16 // Can be set from 9 to 16
-`endif
-`ifdef SPI_SS_NB_24
- `define SPI_SS_NB 24 // Can be set from 17 to 24
-`endif
-`ifdef SPI_SS_NB_32
- `define SPI_SS_NB 32 // Can be set from 25 to 32
-`endif
-
-//
-// Bits of WISHBONE address used for partial decoding of SPI registers.
-//
-`define SPI_OFS_BITS 4:2
-
-//
-// Register offset
-//
-`define SPI_RX_0 0
-`define SPI_RX_1 1
-`define SPI_RX_2 2
-`define SPI_RX_3 3
-`define SPI_TX_0 0
-`define SPI_TX_1 1
-`define SPI_TX_2 2
-`define SPI_TX_3 3
-`define SPI_CTRL 4
-`define SPI_DEVIDE 5
-`define SPI_SS 6
-
-//
-// Number of bits in ctrl register
-//
-`define SPI_CTRL_BIT_NB 14
-
-//
-// Control register bit position
-//
-`define SPI_CTRL_ASS 13
-`define SPI_CTRL_IE 12
-`define SPI_CTRL_LSB 11
-`define SPI_CTRL_TX_NEGEDGE 10
-`define SPI_CTRL_RX_NEGEDGE 9
-`define SPI_CTRL_GO 8
-`define SPI_CTRL_RES_1 7
-`define SPI_CTRL_CHAR_LEN 6:0
-
diff --git a/tests/iwls2005/spi/spi_shift.v b/tests/iwls2005/spi/spi_shift.v
deleted file mode 100644
index b17ac8b1..00000000
--- a/tests/iwls2005/spi/spi_shift.v
+++ /dev/null
@@ -1,238 +0,0 @@
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// spi_shift.v ////
-//// ////
-//// This file is part of the SPI IP core project ////
-//// http://www.opencores.org/projects/spi/ ////
-//// ////
-//// Author(s): ////
-//// - Simon Srot (simons@opencores.org) ////
-//// ////
-//// All additional information is avaliable in the Readme.txt ////
-//// file. ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2002 Authors ////
-//// ////
-//// This source file may be used and distributed without ////
-//// restriction provided that this copyright statement is not ////
-//// removed from the file and that any derivative work contains ////
-//// the original copyright notice and the associated disclaimer. ////
-//// ////
-//// This source file is free software; you can redistribute it ////
-//// and/or modify it under the terms of the GNU Lesser General ////
-//// Public License as published by the Free Software Foundation; ////
-//// either version 2.1 of the License, or (at your option) any ////
-//// later version. ////
-//// ////
-//// This source 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 Lesser General Public License for more ////
-//// details. ////
-//// ////
-//// You should have received a copy of the GNU Lesser General ////
-//// Public License along with this source; if not, download it ////
-//// from http://www.opencores.org/lgpl.shtml ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-
-`include "spi_defines.v"
-`include "timescale.v"
-
-module spi_shift (clk, rst, latch, byte_sel, len, lsb, go,
- pos_edge, neg_edge, rx_negedge, tx_negedge,
- tip, last,
- p_in, p_out, s_clk, s_in, s_out);
-
- parameter Tp = 1;
-
- input clk; // system clock
- input rst; // reset
- input [3:0] latch; // latch signal for storing the data in shift register
- input [3:0] byte_sel; // byte select signals for storing the data in shift register
- input [`SPI_CHAR_LEN_BITS-1:0] len; // data len in bits (minus one)
- input lsb; // lbs first on the line
- input go; // start stansfer
- input pos_edge; // recognize posedge of sclk
- input neg_edge; // recognize negedge of sclk
- input rx_negedge; // s_in is sampled on negative edge
- input tx_negedge; // s_out is driven on negative edge
- output tip; // transfer in progress
- output last; // last bit
- input [31:0] p_in; // parallel in
- output [`SPI_MAX_CHAR-1:0] p_out; // parallel out
- input s_clk; // serial clock
- input s_in; // serial in
- output s_out; // serial out
-
- reg s_out;
- reg tip;
-
- reg [`SPI_CHAR_LEN_BITS:0] cnt; // data bit count
- reg [`SPI_MAX_CHAR-1:0] data; // shift register
- wire [`SPI_CHAR_LEN_BITS:0] tx_bit_pos; // next bit position
- wire [`SPI_CHAR_LEN_BITS:0] rx_bit_pos; // next bit position
- wire rx_clk; // rx clock enable
- wire tx_clk; // tx clock enable
-
- assign p_out = data;
-
- assign tx_bit_pos = lsb ? {!(|len), len} - cnt : cnt - {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1};
- assign rx_bit_pos = lsb ? {!(|len), len} - (rx_negedge ? cnt + {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1} : cnt) :
- (rx_negedge ? cnt : cnt - {{`SPI_CHAR_LEN_BITS{1'b0}},1'b1});
-
- assign last = !(|cnt);
-
- assign rx_clk = (rx_negedge ? neg_edge : pos_edge) && (!last || s_clk);
- assign tx_clk = (tx_negedge ? neg_edge : pos_edge) && !last;
-
- // Character bit counter
- always @(posedge clk or posedge rst)
- begin
- if(rst)
- cnt <= #Tp {`SPI_CHAR_LEN_BITS+1{1'b0}};
- else
- begin
- if(tip)
- cnt <= #Tp pos_edge ? (cnt - {{`SPI_CHAR_LEN_BITS{1'b0}}, 1'b1}) : cnt;
- else
- cnt <= #Tp !(|len) ? {1'b1, {`SPI_CHAR_LEN_BITS{1'b0}}} : {1'b0, len};
- end
- end
-
- // Transfer in progress
- always @(posedge clk or posedge rst)
- begin
- if(rst)
- tip <= #Tp 1'b0;
- else if(go && ~tip)
- tip <= #Tp 1'b1;
- else if(tip && last && pos_edge)
- tip <= #Tp 1'b0;
- end
-
- // Sending bits to the line
- always @(posedge clk or posedge rst)
- begin
- if (rst)
- s_out <= #Tp 1'b0;
- else
- s_out <= #Tp (tx_clk || !tip) ? data[tx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]] : s_out;
- end
-
- // Receiving bits from the line
- always @(posedge clk or posedge rst)
- begin
- if (rst)
- data <= #Tp {`SPI_MAX_CHAR{1'b0}};
-`ifdef SPI_MAX_CHAR_128
- else if (latch[0] && !tip)
- begin
- if (byte_sel[3])
- data[31:24] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[23:16] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[15:8] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[7:0] <= #Tp p_in[7:0];
- end
- else if (latch[1] && !tip)
- begin
- if (byte_sel[3])
- data[63:56] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[55:48] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[47:40] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[39:32] <= #Tp p_in[7:0];
- end
- else if (latch[2] && !tip)
- begin
- if (byte_sel[3])
- data[95:88] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[87:80] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[79:72] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[71:64] <= #Tp p_in[7:0];
- end
- else if (latch[3] && !tip)
- begin
- if (byte_sel[3])
- data[127:120] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[119:112] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[111:104] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[103:96] <= #Tp p_in[7:0];
- end
-`else
-`ifdef SPI_MAX_CHAR_64
- else if (latch[0] && !tip)
- begin
- if (byte_sel[3])
- data[31:24] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[23:16] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[15:8] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[7:0] <= #Tp p_in[7:0];
- end
- else if (latch[1] && !tip)
- begin
- if (byte_sel[3])
- data[63:56] <= #Tp p_in[31:24];
- if (byte_sel[2])
- data[55:48] <= #Tp p_in[23:16];
- if (byte_sel[1])
- data[47:40] <= #Tp p_in[15:8];
- if (byte_sel[0])
- data[39:32] <= #Tp p_in[7:0];
- end
-`else
- else if (latch[0] && !tip)
- begin
- `ifdef SPI_MAX_CHAR_8
- if (byte_sel[0])
- data[`SPI_MAX_CHAR-1:0] <= #Tp p_in[`SPI_MAX_CHAR-1:0];
- `endif
- `ifdef SPI_MAX_CHAR_16
- if (byte_sel[0])
- data[7:0] <= #Tp p_in[7:0];
- if (byte_sel[1])
- data[`SPI_MAX_CHAR-1:8] <= #Tp p_in[`SPI_MAX_CHAR-1:8];
- `endif
- `ifdef SPI_MAX_CHAR_24
- if (byte_sel[0])
- data[7:0] <= #Tp p_in[7:0];
- if (byte_sel[1])
- data[15:8] <= #Tp p_in[15:8];
- if (byte_sel[2])
- data[`SPI_MAX_CHAR-1:16] <= #Tp p_in[`SPI_MAX_CHAR-1:16];
- `endif
- `ifdef SPI_MAX_CHAR_32
- if (byte_sel[0])
- data[7:0] <= #Tp p_in[7:0];
- if (byte_sel[1])
- data[15:8] <= #Tp p_in[15:8];
- if (byte_sel[2])
- data[23:16] <= #Tp p_in[23:16];
- if (byte_sel[3])
- data[`SPI_MAX_CHAR-1:24] <= #Tp p_in[`SPI_MAX_CHAR-1:24];
- `endif
- end
-`endif
-`endif
- else
- data[rx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]] <= #Tp rx_clk ? s_in : data[rx_bit_pos[`SPI_CHAR_LEN_BITS-1:0]];
- end
-
-endmodule
-
diff --git a/tests/iwls2005/spi/spi_top.v b/tests/iwls2005/spi/spi_top.v
deleted file mode 100644
index 09b2e50e..00000000
--- a/tests/iwls2005/spi/spi_top.v
+++ /dev/null
@@ -1,287 +0,0 @@
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// spi_top.v ////
-//// ////
-//// This file is part of the SPI IP core project ////
-//// http://www.opencores.org/projects/spi/ ////
-//// ////
-//// Author(s): ////
-//// - Simon Srot (simons@opencores.org) ////
-//// ////
-//// All additional information is avaliable in the Readme.txt ////
-//// file. ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2002 Authors ////
-//// ////
-//// This source file may be used and distributed without ////
-//// restriction provided that this copyright statement is not ////
-//// removed from the file and that any derivative work contains ////
-//// the original copyright notice and the associated disclaimer. ////
-//// ////
-//// This source file is free software; you can redistribute it ////
-//// and/or modify it under the terms of the GNU Lesser General ////
-//// Public License as published by the Free Software Foundation; ////
-//// either version 2.1 of the License, or (at your option) any ////
-//// later version. ////
-//// ////
-//// This source 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 Lesser General Public License for more ////
-//// details. ////
-//// ////
-//// You should have received a copy of the GNU Lesser General ////
-//// Public License along with this source; if not, download it ////
-//// from http://www.opencores.org/lgpl.shtml ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-
-
-`include "spi_defines.v"
-`include "timescale.v"
-
-module spi_top
-(
- // Wishbone signals
- wb_clk_i, wb_rst_i, wb_adr_i, wb_dat_i, wb_dat_o, wb_sel_i,
- wb_we_i, wb_stb_i, wb_cyc_i, wb_ack_o, wb_err_o, wb_int_o,
-
- // SPI signals
- ss_pad_o, sclk_pad_o, mosi_pad_o, miso_pad_i
-);
-
- parameter Tp = 1;
-
- // Wishbone signals
- input wb_clk_i; // master clock input
- input wb_rst_i; // synchronous active high reset
- input [4:0] wb_adr_i; // lower address bits
- input [32-1:0] wb_dat_i; // databus input
- output [32-1:0] wb_dat_o; // databus output
- input [3:0] wb_sel_i; // byte select inputs
- input wb_we_i; // write enable input
- input wb_stb_i; // stobe/core select signal
- input wb_cyc_i; // valid bus cycle input
- output wb_ack_o; // bus cycle acknowledge output
- output wb_err_o; // termination w/ error
- output wb_int_o; // interrupt request signal output
-
- // SPI signals
- output [`SPI_SS_NB-1:0] ss_pad_o; // slave select
- output sclk_pad_o; // serial clock
- output mosi_pad_o; // master out slave in
- input miso_pad_i; // master in slave out
-
- reg [32-1:0] wb_dat_o;
- reg wb_ack_o;
- reg wb_int_o;
-
- // Internal signals
- reg [`SPI_DIVIDER_LEN-1:0] divider; // Divider register
- reg [`SPI_CTRL_BIT_NB-1:0] ctrl; // Control and status register
- reg [`SPI_SS_NB-1:0] ss; // Slave select register
- reg [32-1:0] wb_dat; // wb data out
- wire [`SPI_MAX_CHAR-1:0] rx; // Rx register
- wire rx_negedge; // miso is sampled on negative edge
- wire tx_negedge; // mosi is driven on negative edge
- wire [`SPI_CHAR_LEN_BITS-1:0] char_len; // char len
- wire go; // go
- wire lsb; // lsb first on line
- wire ie; // interrupt enable
- wire ass; // automatic slave select
- wire spi_divider_sel; // divider register select
- wire spi_ctrl_sel; // ctrl register select
- wire [3:0] spi_tx_sel; // tx_l register select
- wire spi_ss_sel; // ss register select
- wire tip; // transfer in progress
- wire pos_edge; // recognize posedge of sclk
- wire neg_edge; // recognize negedge of sclk
- wire last_bit; // marks last character bit
-
- // Address decoder
- assign spi_divider_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_DEVIDE);
- assign spi_ctrl_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_CTRL);
- assign spi_tx_sel[0] = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_0);
- assign spi_tx_sel[1] = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_1);
- assign spi_tx_sel[2] = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_2);
- assign spi_tx_sel[3] = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_TX_3);
- assign spi_ss_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[`SPI_OFS_BITS] == `SPI_SS);
-
- // Read from registers
- always @(wb_adr_i or rx or ctrl or divider or ss)
- begin
- case (wb_adr_i[`SPI_OFS_BITS])
-`ifdef SPI_MAX_CHAR_128
- `SPI_RX_0: wb_dat = rx[31:0];
- `SPI_RX_1: wb_dat = rx[63:32];
- `SPI_RX_2: wb_dat = rx[95:64];
- `SPI_RX_3: wb_dat = {{128-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:96]};
-`else
-`ifdef SPI_MAX_CHAR_64
- `SPI_RX_0: wb_dat = rx[31:0];
- `SPI_RX_1: wb_dat = {{64-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:32]};
- `SPI_RX_2: wb_dat = 32'b0;
- `SPI_RX_3: wb_dat = 32'b0;
-`else
- `SPI_RX_0: wb_dat = {{32-`SPI_MAX_CHAR{1'b0}}, rx[`SPI_MAX_CHAR-1:0]};
- `SPI_RX_1: wb_dat = 32'b0;
- `SPI_RX_2: wb_dat = 32'b0;
- `SPI_RX_3: wb_dat = 32'b0;
-`endif
-`endif
- `SPI_CTRL: wb_dat = {{32-`SPI_CTRL_BIT_NB{1'b0}}, ctrl};
- `SPI_DEVIDE: wb_dat = {{32-`SPI_DIVIDER_LEN{1'b0}}, divider};
- `SPI_SS: wb_dat = {{32-`SPI_SS_NB{1'b0}}, ss};
- default: wb_dat = 32'bx;
- endcase
- end
-
- // Wb data out
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- wb_dat_o <= #Tp 32'b0;
- else
- wb_dat_o <= #Tp wb_dat;
- end
-
- // Wb acknowledge
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- wb_ack_o <= #Tp 1'b0;
- else
- wb_ack_o <= #Tp wb_cyc_i & wb_stb_i & ~wb_ack_o;
- end
-
- // Wb error
- assign wb_err_o = 1'b0;
-
- // Interrupt
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- wb_int_o <= #Tp 1'b0;
- else if (ie && tip && last_bit && pos_edge)
- wb_int_o <= #Tp 1'b1;
- else if (wb_ack_o)
- wb_int_o <= #Tp 1'b0;
- end
-
- // Divider register
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- divider <= #Tp {`SPI_DIVIDER_LEN{1'b0}};
- else if (spi_divider_sel && wb_we_i && !tip)
- begin
- `ifdef SPI_DIVIDER_LEN_8
- if (wb_sel_i[0])
- divider <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:0];
- `endif
- `ifdef SPI_DIVIDER_LEN_16
- if (wb_sel_i[0])
- divider[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- divider[`SPI_DIVIDER_LEN-1:8] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:8];
- `endif
- `ifdef SPI_DIVIDER_LEN_24
- if (wb_sel_i[0])
- divider[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- divider[15:8] <= #Tp wb_dat_i[15:8];
- if (wb_sel_i[2])
- divider[`SPI_DIVIDER_LEN-1:16] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:16];
- `endif
- `ifdef SPI_DIVIDER_LEN_32
- if (wb_sel_i[0])
- divider[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- divider[15:8] <= #Tp wb_dat_i[15:8];
- if (wb_sel_i[2])
- divider[23:16] <= #Tp wb_dat_i[23:16];
- if (wb_sel_i[3])
- divider[`SPI_DIVIDER_LEN-1:24] <= #Tp wb_dat_i[`SPI_DIVIDER_LEN-1:24];
- `endif
- end
- end
-
- // Ctrl register
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- ctrl <= #Tp {`SPI_CTRL_BIT_NB{1'b0}};
- else if(spi_ctrl_sel && wb_we_i && !tip)
- begin
- if (wb_sel_i[0])
- ctrl[7:0] <= #Tp wb_dat_i[7:0] | {7'b0, ctrl[0]};
- if (wb_sel_i[1])
- ctrl[`SPI_CTRL_BIT_NB-1:8] <= #Tp wb_dat_i[`SPI_CTRL_BIT_NB-1:8];
- end
- else if(tip && last_bit && pos_edge)
- ctrl[`SPI_CTRL_GO] <= #Tp 1'b0;
- end
-
- assign rx_negedge = ctrl[`SPI_CTRL_RX_NEGEDGE];
- assign tx_negedge = ctrl[`SPI_CTRL_TX_NEGEDGE];
- assign go = ctrl[`SPI_CTRL_GO];
- assign char_len = ctrl[`SPI_CTRL_CHAR_LEN];
- assign lsb = ctrl[`SPI_CTRL_LSB];
- assign ie = ctrl[`SPI_CTRL_IE];
- assign ass = ctrl[`SPI_CTRL_ASS];
-
- // Slave select register
- always @(posedge wb_clk_i or posedge wb_rst_i)
- begin
- if (wb_rst_i)
- ss <= #Tp {`SPI_SS_NB{1'b0}};
- else if(spi_ss_sel && wb_we_i && !tip)
- begin
- `ifdef SPI_SS_NB_8
- if (wb_sel_i[0])
- ss <= #Tp wb_dat_i[`SPI_SS_NB-1:0];
- `endif
- `ifdef SPI_SS_NB_16
- if (wb_sel_i[0])
- ss[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- ss[`SPI_SS_NB-1:8] <= #Tp wb_dat_i[`SPI_SS_NB-1:8];
- `endif
- `ifdef SPI_SS_NB_24
- if (wb_sel_i[0])
- ss[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- ss[15:8] <= #Tp wb_dat_i[15:8];
- if (wb_sel_i[2])
- ss[`SPI_SS_NB-1:16] <= #Tp wb_dat_i[`SPI_SS_NB-1:16];
- `endif
- `ifdef SPI_SS_NB_32
- if (wb_sel_i[0])
- ss[7:0] <= #Tp wb_dat_i[7:0];
- if (wb_sel_i[1])
- ss[15:8] <= #Tp wb_dat_i[15:8];
- if (wb_sel_i[2])
- ss[23:16] <= #Tp wb_dat_i[23:16];
- if (wb_sel_i[3])
- ss[`SPI_SS_NB-1:24] <= #Tp wb_dat_i[`SPI_SS_NB-1:24];
- `endif
- end
- end
-
- assign ss_pad_o = ~((ss & {`SPI_SS_NB{tip & ass}}) | (ss & {`SPI_SS_NB{!ass}}));
-
- spi_clgen clgen (.clk_in(wb_clk_i), .rst(wb_rst_i), .go(go), .enable(tip), .last_clk(last_bit),
- .divider(divider), .clk_out(sclk_pad_o), .pos_edge(pos_edge),
- .neg_edge(neg_edge));
-
- spi_shift shift (.clk(wb_clk_i), .rst(wb_rst_i), .len(char_len[`SPI_CHAR_LEN_BITS-1:0]),
- .latch(spi_tx_sel[3:0] & {4{wb_we_i}}), .byte_sel(wb_sel_i), .lsb(lsb),
- .go(go), .pos_edge(pos_edge), .neg_edge(neg_edge),
- .rx_negedge(rx_negedge), .tx_negedge(tx_negedge),
- .tip(tip), .last(last_bit),
- .p_in(wb_dat_i), .p_out(rx),
- .s_clk(sclk_pad_o), .s_in(miso_pad_i), .s_out(mosi_pad_o));
-endmodule
-
diff --git a/tests/iwls2005/spi/timescale.v b/tests/iwls2005/spi/timescale.v
deleted file mode 100644
index 60d4ecbd..00000000
--- a/tests/iwls2005/spi/timescale.v
+++ /dev/null
@@ -1,2 +0,0 @@
-`timescale 1ns / 10ps
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 04:16:30 +0000