mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-10-28 23:16:32 +08:00
117 lines
3.2 KiB
Verilog
117 lines
3.2 KiB
Verilog
//-----------------------------------------------------------------------------
|
|
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
|
//
|
|
// 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.
|
|
//
|
|
// See LICENSE.txt for the text of the license.
|
|
//-----------------------------------------------------------------------------
|
|
|
|
`include "lo_read.v"
|
|
/*
|
|
pck0 - input main 24MHz clock (PLL / 4)
|
|
[7:0] adc_d - input data from A/D converter
|
|
lo_is_125khz - input freq selector (1=125kHz, 0=136kHz)
|
|
|
|
pwr_lo - output to coil drivers (ssp_clk / 8)
|
|
adc_clk - output A/D clock signal
|
|
ssp_frame - output SSS frame indicator (goes high while the 8 bits are shifted)
|
|
ssp_din - output SSP data to ARM (shifts 8 bit A/D value serially to ARM MSB first)
|
|
ssp_clk - output SSP clock signal 1MHz/1.09MHz (pck0 / 2*(11+lo_is_125khz) )
|
|
|
|
ck_1356meg - input unused
|
|
ck_1356megb - input unused
|
|
ssp_dout - input unused
|
|
cross_hi - input unused
|
|
cross_lo - input unused
|
|
|
|
pwr_hi - output unused, tied low
|
|
pwr_oe1 - output unused, undefined
|
|
pwr_oe2 - output unused, undefined
|
|
pwr_oe3 - output unused, undefined
|
|
pwr_oe4 - output unused, undefined
|
|
dbg - output alias for adc_clk
|
|
*/
|
|
|
|
module testbed_lo_read;
|
|
reg pck0;
|
|
reg [7:0] adc_d;
|
|
reg lo_is_125khz;
|
|
reg [15:0] divisor;
|
|
|
|
wire pwr_lo;
|
|
wire adc_clk;
|
|
wire ck_1356meg;
|
|
wire ck_1356megb;
|
|
wire ssp_frame;
|
|
wire ssp_din;
|
|
wire ssp_clk;
|
|
reg ssp_dout;
|
|
wire pwr_hi;
|
|
wire pwr_oe1;
|
|
wire pwr_oe2;
|
|
wire pwr_oe3;
|
|
wire pwr_oe4;
|
|
wire cross_lo;
|
|
wire cross_hi;
|
|
wire dbg;
|
|
|
|
lo_read #(5,10) dut(
|
|
.pck0(pck0),
|
|
.ck_1356meg(ck_1356meg),
|
|
.ck_1356megb(ck_1356megb),
|
|
.pwr_lo(pwr_lo),
|
|
.pwr_hi(pwr_hi),
|
|
.pwr_oe1(pwr_oe1),
|
|
.pwr_oe2(pwr_oe2),
|
|
.pwr_oe3(pwr_oe3),
|
|
.pwr_oe4(pwr_oe4),
|
|
.adc_d(adc_d),
|
|
.adc_clk(adc_clk),
|
|
.ssp_frame(ssp_frame),
|
|
.ssp_din(ssp_din),
|
|
.ssp_dout(ssp_dout),
|
|
.ssp_clk(ssp_clk),
|
|
.cross_hi(cross_hi),
|
|
.cross_lo(cross_lo),
|
|
.dbg(dbg),
|
|
.lo_is_125khz(lo_is_125khz),
|
|
.divisor(divisor)
|
|
);
|
|
|
|
integer idx, i, adc_val=8;
|
|
|
|
// main clock
|
|
always #5 pck0 = !pck0;
|
|
|
|
task crank_dut;
|
|
begin
|
|
@(posedge adc_clk) ;
|
|
adc_d = adc_val;
|
|
adc_val = (adc_val *2) + 53;
|
|
end
|
|
endtask
|
|
|
|
initial begin
|
|
|
|
// init inputs
|
|
pck0 = 0;
|
|
adc_d = 0;
|
|
ssp_dout = 0;
|
|
lo_is_125khz = 1;
|
|
divisor = 255; //min 16, 95=125kHz, max 255
|
|
|
|
// simulate 4 A/D cycles at 125kHz
|
|
for (i = 0 ; i < 8 ; i = i + 1) begin
|
|
crank_dut;
|
|
end
|
|
$finish;
|
|
end
|
|
endmodule // main
|