-//-----------------------------------------------------------------------------\r
-// The FPGA is responsible for interfacing between the A/D, the coil drivers,\r
-// and the ARM. In the low-frequency modes it passes the data straight\r
-// through, so that the ARM gets raw A/D samples over the SSP. In the high-\r
-// frequency modes, the FPGA might perform some demodulation first, to\r
-// reduce the amount of data that we must send to the ARM.\r
-//\r
-// I am not really an FPGA/ASIC designer, so I am sure that a lot of this\r
-// could be improved.\r
-//\r
-// Jonathan Westhues, March 2006\r
-// Added ISO14443-A support by Gerhard de Koning Gans, April 2008\r
-//-----------------------------------------------------------------------------\r
-\r
-`include "lo_read.v"\r
-`include "lo_simulate.v"\r
-`include "hi_read_tx.v"\r
-`include "hi_read_rx_xcorr.v"\r
-`include "hi_simulate.v"\r
-`include "hi_iso14443a.v"\r
-`include "util.v"\r
-\r
-module fpga(\r
- spck, miso, mosi, ncs,\r
- pck0i, ck_1356meg, ck_1356megb,\r
- pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4,\r
- adc_d, adc_clk, adc_noe,\r
- ssp_frame, ssp_din, ssp_dout, ssp_clk,\r
- cross_hi, cross_lo,\r
- dbg\r
-);\r
- input spck, mosi, ncs;\r
- output miso;\r
- input pck0i, ck_1356meg, ck_1356megb;\r
- output pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4;\r
- input [7:0] adc_d;\r
- output adc_clk, adc_noe;\r
- input ssp_dout;\r
- output ssp_frame, ssp_din, ssp_clk;\r
- input cross_hi, cross_lo;\r
- output dbg;\r
-\r
- IBUFG #(.IOSTANDARD("DEFAULT") ) pck0b(\r
- .O(pck0),\r
- .I(pck0i)\r
- );\r
-//assign pck0 = pck0i;\r
-//-----------------------------------------------------------------------------\r
-// The SPI receiver. This sets up the configuration word, which the rest of\r
-// the logic looks at to determine how to connect the A/D and the coil\r
-// drivers (i.e., which section gets it). Also assign some symbolic names\r
-// to the configuration bits, for use below.\r
-//-----------------------------------------------------------------------------\r
-\r
-reg [7:0] conf_word_shift;\r
-reg [7:0] conf_word;\r
-\r
-// We switch modes between transmitting to the 13.56 MHz tag and receiving\r
-// from it, which means that we must make sure that we can do so without\r
-// glitching, or else we will glitch the transmitted carrier.\r
-always @(posedge ncs)\r
-begin\r
- conf_word <= conf_word_shift;\r
-end\r
-\r
-always @(posedge spck)\r
-begin\r
- if(~ncs)\r
- begin\r
- conf_word_shift[7:1] <= conf_word_shift[6:0];\r
- conf_word_shift[0] <= mosi;\r
- end\r
-end\r
-\r
-wire [2:0] major_mode;\r
-assign major_mode = conf_word[7:5];\r
-\r
-// For the low-frequency configuration:\r
-wire lo_is_125khz;\r
-assign lo_is_125khz = conf_word[3];\r
-\r
-// For the high-frequency transmit configuration: modulation depth, either\r
-// 100% (just quite driving antenna, steady LOW), or shallower (tri-state\r
-// some fraction of the buffers)\r
-wire hi_read_tx_shallow_modulation;\r
-assign hi_read_tx_shallow_modulation = conf_word[0];\r
-\r
-// For the high-frequency receive correlator: frequency against which to\r
-// correlate.\r
-wire hi_read_rx_xcorr_848;\r
-assign hi_read_rx_xcorr_848 = conf_word[0];\r
-// and whether to drive the coil (reader) or just short it (snooper)\r
-wire hi_read_rx_xcorr_snoop;\r
-assign hi_read_rx_xcorr_snoop = conf_word[1];\r
-\r
-// For the high-frequency simulated tag: what kind of modulation to use.\r
-wire [2:0] hi_simulate_mod_type;\r
-assign hi_simulate_mod_type = conf_word[2:0];\r
-\r
-//-----------------------------------------------------------------------------\r
-// And then we instantiate the modules corresponding to each of the FPGA's\r
-// major modes, and use muxes to connect the outputs of the active mode to\r
-// the output pins.\r
-//-----------------------------------------------------------------------------\r
-\r
-lo_read lr(\r
- pck0, ck_1356meg, ck_1356megb,\r
- lr_pwr_lo, lr_pwr_hi, lr_pwr_oe1, lr_pwr_oe2, lr_pwr_oe3, lr_pwr_oe4,\r
- adc_d, lr_adc_clk,\r
- lr_ssp_frame, lr_ssp_din, ssp_dout, lr_ssp_clk,\r
- cross_hi, cross_lo,\r
- lr_dbg,\r
- lo_is_125khz\r
-);\r
-\r
-lo_simulate ls(\r
- pck0, ck_1356meg, ck_1356megb,\r
- ls_pwr_lo, ls_pwr_hi, ls_pwr_oe1, ls_pwr_oe2, ls_pwr_oe3, ls_pwr_oe4,\r
- adc_d, ls_adc_clk,\r
- ls_ssp_frame, ls_ssp_din, ssp_dout, ls_ssp_clk,\r
- cross_hi, cross_lo,\r
- ls_dbg\r
-);\r
-\r
-hi_read_tx ht(\r
- pck0, ck_1356meg, ck_1356megb,\r
- ht_pwr_lo, ht_pwr_hi, ht_pwr_oe1, ht_pwr_oe2, ht_pwr_oe3, ht_pwr_oe4,\r
- adc_d, ht_adc_clk,\r
- ht_ssp_frame, ht_ssp_din, ssp_dout, ht_ssp_clk,\r
- cross_hi, cross_lo,\r
- ht_dbg,\r
- hi_read_tx_shallow_modulation\r
-);\r
-\r
-hi_read_rx_xcorr hrxc(\r
- pck0, ck_1356meg, ck_1356megb,\r
- hrxc_pwr_lo, hrxc_pwr_hi, hrxc_pwr_oe1, hrxc_pwr_oe2, hrxc_pwr_oe3, hrxc_pwr_oe4,\r
- adc_d, hrxc_adc_clk,\r
- hrxc_ssp_frame, hrxc_ssp_din, ssp_dout, hrxc_ssp_clk,\r
- cross_hi, cross_lo,\r
- hrxc_dbg,\r
- hi_read_rx_xcorr_848, hi_read_rx_xcorr_snoop\r
-);\r
-\r
-hi_simulate hs(\r
- pck0, ck_1356meg, ck_1356megb,\r
- hs_pwr_lo, hs_pwr_hi, hs_pwr_oe1, hs_pwr_oe2, hs_pwr_oe3, hs_pwr_oe4,\r
- adc_d, hs_adc_clk,\r
- hs_ssp_frame, hs_ssp_din, ssp_dout, hs_ssp_clk,\r
- cross_hi, cross_lo,\r
- hs_dbg,\r
- hi_simulate_mod_type\r
-);\r
-\r
-hi_iso14443a hisn(\r
- pck0, ck_1356meg, ck_1356megb,\r
- hisn_pwr_lo, hisn_pwr_hi, hisn_pwr_oe1, hisn_pwr_oe2, hisn_pwr_oe3, hisn_pwr_oe4,\r
- adc_d, hisn_adc_clk,\r
- hisn_ssp_frame, hisn_ssp_din, ssp_dout, hisn_ssp_clk,\r
- cross_hi, cross_lo,\r
- hisn_dbg,\r
- hi_simulate_mod_type\r
-);\r
-\r
-// Major modes:\r
-// 000 -- LF reader (generic)\r
-// 001 -- LF simulated tag (generic)\r
-// 010 -- HF reader, transmitting to tag; modulation depth selectable\r
-// 011 -- HF reader, receiving from tag, correlating as it goes; frequency selectable\r
-// 100 -- HF simulated tag\r
-// 101 -- HF ISO14443-A\r
-// 110 -- unused\r
-// 111 -- everything off\r
-\r
-mux8 mux_ssp_clk (major_mode, ssp_clk, lr_ssp_clk, ls_ssp_clk, ht_ssp_clk, hrxc_ssp_clk, hs_ssp_clk, hisn_ssp_clk, 1'b0, 1'b0);\r
-mux8 mux_ssp_din (major_mode, ssp_din, lr_ssp_din, ls_ssp_din, ht_ssp_din, hrxc_ssp_din, hs_ssp_din, hisn_ssp_din, 1'b0, 1'b0);\r
-mux8 mux_ssp_frame (major_mode, ssp_frame, lr_ssp_frame, ls_ssp_frame, ht_ssp_frame, hrxc_ssp_frame, hs_ssp_frame, hisn_ssp_frame, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe1 (major_mode, pwr_oe1, lr_pwr_oe1, ls_pwr_oe1, ht_pwr_oe1, hrxc_pwr_oe1, hs_pwr_oe1, hisn_pwr_oe1, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe2 (major_mode, pwr_oe2, lr_pwr_oe2, ls_pwr_oe2, ht_pwr_oe2, hrxc_pwr_oe2, hs_pwr_oe2, hisn_pwr_oe2, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe3 (major_mode, pwr_oe3, lr_pwr_oe3, ls_pwr_oe3, ht_pwr_oe3, hrxc_pwr_oe3, hs_pwr_oe3, hisn_pwr_oe3, 1'b0, 1'b0);\r
-mux8 mux_pwr_oe4 (major_mode, pwr_oe4, lr_pwr_oe4, ls_pwr_oe4, ht_pwr_oe4, hrxc_pwr_oe4, hs_pwr_oe4, hisn_pwr_oe4, 1'b0, 1'b0);\r
-mux8 mux_pwr_lo (major_mode, pwr_lo, lr_pwr_lo, ls_pwr_lo, ht_pwr_lo, hrxc_pwr_lo, hs_pwr_lo, hisn_pwr_lo, 1'b0, 1'b0);\r
-mux8 mux_pwr_hi (major_mode, pwr_hi, lr_pwr_hi, ls_pwr_hi, ht_pwr_hi, hrxc_pwr_hi, hs_pwr_hi, hisn_pwr_hi, 1'b0, 1'b0);\r
-mux8 mux_adc_clk (major_mode, adc_clk, lr_adc_clk, ls_adc_clk, ht_adc_clk, hrxc_adc_clk, hs_adc_clk, hisn_adc_clk, 1'b0, 1'b0);\r
-mux8 mux_dbg (major_mode, dbg, lr_dbg, ls_dbg, ht_dbg, hrxc_dbg, hs_dbg, hisn_dbg, 1'b0, 1'b0);\r
-\r
-// In all modes, let the ADC's outputs be enabled.\r
-assign adc_noe = 1'b0;\r
-\r
-endmodule\r
+//-----------------------------------------------------------------------------
+// The FPGA is responsible for interfacing between the A/D, the coil drivers,
+// and the ARM. In the low-frequency modes it passes the data straight
+// through, so that the ARM gets raw A/D samples over the SSP. In the high-
+// frequency modes, the FPGA might perform some demodulation first, to
+// reduce the amount of data that we must send to the ARM.
+//
+// I am not really an FPGA/ASIC designer, so I am sure that a lot of this
+// could be improved.
+//
+// Jonathan Westhues, March 2006
+// Added ISO14443-A support by Gerhard de Koning Gans, April 2008
+//-----------------------------------------------------------------------------
+
+`include "lo_read.v"
+`include "lo_passthru.v"
+`include "lo_edge_detect.v"
+`include "hi_read_tx.v"
+`include "hi_read_rx_xcorr.v"
+`include "hi_simulate.v"
+`include "hi_iso14443a.v"
+`include "util.v"
+
+module fpga(
+ spcki, miso, mosi, ncs,
+ pck0i, ck_1356meg, ck_1356megb,
+ pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4,
+ adc_d, adc_clk, adc_noe,
+ ssp_frame, ssp_din, ssp_dout, ssp_clk,
+ cross_hi, cross_lo,
+ dbg
+);
+ input spcki, mosi, ncs;
+ output miso;
+ input pck0i, ck_1356meg, ck_1356megb;
+ output pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4;
+ input [7:0] adc_d;
+ output adc_clk, adc_noe;
+ input ssp_dout;
+ output ssp_frame, ssp_din, ssp_clk;
+ input cross_hi, cross_lo;
+ output dbg;
+
+//assign pck0 = pck0i;
+ IBUFG #(.IOSTANDARD("DEFAULT") ) pck0b(
+ .O(pck0),
+ .I(pck0i)
+ );
+//assign spck = spcki;
+ IBUFG #(.IOSTANDARD("DEFAULT") ) spckb(
+ .O(spck),
+ .I(spcki)
+ );
+//-----------------------------------------------------------------------------
+// The SPI receiver. This sets up the configuration word, which the rest of
+// the logic looks at to determine how to connect the A/D and the coil
+// drivers (i.e., which section gets it). Also assign some symbolic names
+// to the configuration bits, for use below.
+//-----------------------------------------------------------------------------
+
+reg [15:0] shift_reg;
+reg [7:0] divisor;
+reg [7:0] conf_word;
+
+// We switch modes between transmitting to the 13.56 MHz tag and receiving
+// from it, which means that we must make sure that we can do so without
+// glitching, or else we will glitch the transmitted carrier.
+always @(posedge ncs)
+begin
+ case(shift_reg[15:12])
+ 4'b0001: conf_word <= shift_reg[7:0];
+ 4'b0010: divisor <= shift_reg[7:0];
+ endcase
+end
+
+always @(posedge spck)
+begin
+ if(~ncs)
+ begin
+ shift_reg[15:1] <= shift_reg[14:0];
+ shift_reg[0] <= mosi;
+ end
+end
+
+wire [2:0] major_mode;
+assign major_mode = conf_word[7:5];
+
+// For the low-frequency configuration:
+wire lo_is_125khz;
+assign lo_is_125khz = conf_word[3];
+
+// For the high-frequency transmit configuration: modulation depth, either
+// 100% (just quite driving antenna, steady LOW), or shallower (tri-state
+// some fraction of the buffers)
+wire hi_read_tx_shallow_modulation;
+assign hi_read_tx_shallow_modulation = conf_word[0];
+
+// For the high-frequency receive correlator: frequency against which to
+// correlate.
+wire hi_read_rx_xcorr_848;
+assign hi_read_rx_xcorr_848 = conf_word[0];
+// and whether to drive the coil (reader) or just short it (snooper)
+wire hi_read_rx_xcorr_snoop;
+assign hi_read_rx_xcorr_snoop = conf_word[1];
+
+// Divide the expected subcarrier frequency for hi_read_rx_xcorr by 4
+wire hi_read_rx_xcorr_quarter;
+assign hi_read_rx_xcorr_quarter = conf_word[2];
+
+// For the high-frequency simulated tag: what kind of modulation to use.
+wire [2:0] hi_simulate_mod_type;
+assign hi_simulate_mod_type = conf_word[2:0];
+
+// For the high-frequency simulated tag: what kind of modulation to use.
+wire lf_field;
+assign lf_field = conf_word[0];
+
+//-----------------------------------------------------------------------------
+// And then we instantiate the modules corresponding to each of the FPGA's
+// major modes, and use muxes to connect the outputs of the active mode to
+// the output pins.
+//-----------------------------------------------------------------------------
+
+lo_read lr(
+ pck0, ck_1356meg, ck_1356megb,
+ lr_pwr_lo, lr_pwr_hi, lr_pwr_oe1, lr_pwr_oe2, lr_pwr_oe3, lr_pwr_oe4,
+ adc_d, lr_adc_clk,
+ lr_ssp_frame, lr_ssp_din, ssp_dout, lr_ssp_clk,
+ cross_hi, cross_lo,
+ lr_dbg,
+ lo_is_125khz, divisor
+);
+
+lo_passthru lp(
+ pck0, ck_1356meg, ck_1356megb,
+ lp_pwr_lo, lp_pwr_hi, lp_pwr_oe1, lp_pwr_oe2, lp_pwr_oe3, lp_pwr_oe4,
+ adc_d, lp_adc_clk,
+ lp_ssp_frame, lp_ssp_din, ssp_dout, lp_ssp_clk,
+ cross_hi, cross_lo,
+ lp_dbg, divisor
+);
+
+lo_edge_detect ls(
+ pck0, ck_1356meg, ck_1356megb,
+ ls_pwr_lo, ls_pwr_hi, ls_pwr_oe1, ls_pwr_oe2, ls_pwr_oe3, ls_pwr_oe4,
+ adc_d, ls_adc_clk,
+ ls_ssp_frame, ls_ssp_din, ssp_dout, ls_ssp_clk,
+ cross_hi, cross_lo,
+ ls_dbg, divisor,
+ lf_field
+);
+
+hi_read_tx ht(
+ pck0, ck_1356meg, ck_1356megb,
+ ht_pwr_lo, ht_pwr_hi, ht_pwr_oe1, ht_pwr_oe2, ht_pwr_oe3, ht_pwr_oe4,
+ adc_d, ht_adc_clk,
+ ht_ssp_frame, ht_ssp_din, ssp_dout, ht_ssp_clk,
+ cross_hi, cross_lo,
+ ht_dbg,
+ hi_read_tx_shallow_modulation
+);
+
+hi_read_rx_xcorr hrxc(
+ pck0, ck_1356meg, ck_1356megb,
+ hrxc_pwr_lo, hrxc_pwr_hi, hrxc_pwr_oe1, hrxc_pwr_oe2, hrxc_pwr_oe3, hrxc_pwr_oe4,
+ adc_d, hrxc_adc_clk,
+ hrxc_ssp_frame, hrxc_ssp_din, ssp_dout, hrxc_ssp_clk,
+ cross_hi, cross_lo,
+ hrxc_dbg,
+ hi_read_rx_xcorr_848, hi_read_rx_xcorr_snoop, hi_read_rx_xcorr_quarter
+);
+
+hi_simulate hs(
+ pck0, ck_1356meg, ck_1356megb,
+ hs_pwr_lo, hs_pwr_hi, hs_pwr_oe1, hs_pwr_oe2, hs_pwr_oe3, hs_pwr_oe4,
+ adc_d, hs_adc_clk,
+ hs_ssp_frame, hs_ssp_din, ssp_dout, hs_ssp_clk,
+ cross_hi, cross_lo,
+ hs_dbg,
+ hi_simulate_mod_type
+);
+
+hi_iso14443a hisn(
+ pck0, ck_1356meg, ck_1356megb,
+ hisn_pwr_lo, hisn_pwr_hi, hisn_pwr_oe1, hisn_pwr_oe2, hisn_pwr_oe3, hisn_pwr_oe4,
+ adc_d, hisn_adc_clk,
+ hisn_ssp_frame, hisn_ssp_din, ssp_dout, hisn_ssp_clk,
+ cross_hi, cross_lo,
+ hisn_dbg,
+ hi_simulate_mod_type
+);
+
+// Major modes:
+// 000 -- LF reader (generic)
+// 001 -- LF simulated tag (generic)
+// 010 -- HF reader, transmitting to tag; modulation depth selectable
+// 011 -- HF reader, receiving from tag, correlating as it goes; frequency selectable
+// 100 -- HF simulated tag
+// 101 -- HF ISO14443-A
+// 110 -- LF passthrough
+// 111 -- everything off
+
+mux8 mux_ssp_clk (major_mode, ssp_clk, lr_ssp_clk, ls_ssp_clk, ht_ssp_clk, hrxc_ssp_clk, hs_ssp_clk, hisn_ssp_clk, lp_ssp_clk, 1'b0);
+mux8 mux_ssp_din (major_mode, ssp_din, lr_ssp_din, ls_ssp_din, ht_ssp_din, hrxc_ssp_din, hs_ssp_din, hisn_ssp_din, lp_ssp_din, 1'b0);
+mux8 mux_ssp_frame (major_mode, ssp_frame, lr_ssp_frame, ls_ssp_frame, ht_ssp_frame, hrxc_ssp_frame, hs_ssp_frame, hisn_ssp_frame, lp_ssp_frame, 1'b0);
+mux8 mux_pwr_oe1 (major_mode, pwr_oe1, lr_pwr_oe1, ls_pwr_oe1, ht_pwr_oe1, hrxc_pwr_oe1, hs_pwr_oe1, hisn_pwr_oe1, lp_pwr_oe1, 1'b0);
+mux8 mux_pwr_oe2 (major_mode, pwr_oe2, lr_pwr_oe2, ls_pwr_oe2, ht_pwr_oe2, hrxc_pwr_oe2, hs_pwr_oe2, hisn_pwr_oe2, lp_pwr_oe2, 1'b0);
+mux8 mux_pwr_oe3 (major_mode, pwr_oe3, lr_pwr_oe3, ls_pwr_oe3, ht_pwr_oe3, hrxc_pwr_oe3, hs_pwr_oe3, hisn_pwr_oe3, lp_pwr_oe3, 1'b0);
+mux8 mux_pwr_oe4 (major_mode, pwr_oe4, lr_pwr_oe4, ls_pwr_oe4, ht_pwr_oe4, hrxc_pwr_oe4, hs_pwr_oe4, hisn_pwr_oe4, lp_pwr_oe4, 1'b0);
+mux8 mux_pwr_lo (major_mode, pwr_lo, lr_pwr_lo, ls_pwr_lo, ht_pwr_lo, hrxc_pwr_lo, hs_pwr_lo, hisn_pwr_lo, lp_pwr_lo, 1'b0);
+mux8 mux_pwr_hi (major_mode, pwr_hi, lr_pwr_hi, ls_pwr_hi, ht_pwr_hi, hrxc_pwr_hi, hs_pwr_hi, hisn_pwr_hi, lp_pwr_hi, 1'b0);
+mux8 mux_adc_clk (major_mode, adc_clk, lr_adc_clk, ls_adc_clk, ht_adc_clk, hrxc_adc_clk, hs_adc_clk, hisn_adc_clk, lp_adc_clk, 1'b0);
+mux8 mux_dbg (major_mode, dbg, lr_dbg, ls_dbg, ht_dbg, hrxc_dbg, hs_dbg, hisn_dbg, lp_dbg, 1'b0);
+
+// In all modes, let the ADC's outputs be enabled.
+assign adc_noe = 1'b0;
+
+endmodule
projects / proxmark3-svn / blobdiff