| 6658905f |
1 | `include "lo_read.v"\r |
| 6658905f |
2 | /*\r |
| 3 | pck0 - input main 24Mhz clock (PLL / 4)\r |
| 4 | [7:0] adc_d - input data from A/D converter\r |
| 5 | lo_is_125khz - input freq selector (1=125Khz, 0=136Khz)\r |
| 6 | \r |
| 7 | pwr_lo - output to coil drivers (ssp_clk / 8)\r |
| 8 | adc_clk - output A/D clock signal\r |
| 9 | ssp_frame - output SSS frame indicator (goes high while the 8 bits are shifted)\r |
| 10 | ssp_din - output SSP data to ARM (shifts 8 bit A/D value serially to ARM MSB first)\r |
| 11 | ssp_clk - output SSP clock signal 1Mhz/1.09Mhz (pck0 / 2*(11+lo_is_125khz) )\r |
| 12 | \r |
| 13 | ck_1356meg - input unused\r |
| 14 | ck_1356megb - input unused\r |
| 15 | ssp_dout - input unused\r |
| 16 | cross_hi - input unused\r |
| 17 | cross_lo - input unused\r |
| 18 | \r |
| 19 | pwr_hi - output unused, tied low\r |
| 20 | pwr_oe1 - output unused, undefined\r |
| 21 | pwr_oe2 - output unused, undefined\r |
| 22 | pwr_oe3 - output unused, undefined\r |
| 23 | pwr_oe4 - output unused, undefined\r |
| 24 | dbg - output alias for adc_clk\r |
| 25 | */\r |
| 26 | \r |
| 27 | module testbed_lo_read;\r |
| 28 | reg pck0;\r |
| 29 | reg [7:0] adc_d;\r |
| 30 | reg lo_is_125khz;\r |
| 30f2a7d3 |
31 | reg [15:0] divisor;\r |
| 6658905f |
32 | \r |
| 33 | wire pwr_lo;\r |
| 34 | wire adc_clk;\r |
| 35 | wire ck_1356meg;\r |
| 36 | wire ck_1356megb;\r |
| 37 | wire ssp_frame;\r |
| 38 | wire ssp_din;\r |
| 39 | wire ssp_clk;\r |
| 1c38843b |
40 | reg ssp_dout;\r |
| 6658905f |
41 | wire pwr_hi;\r |
| 42 | wire pwr_oe1;\r |
| 43 | wire pwr_oe2;\r |
| 44 | wire pwr_oe3;\r |
| 45 | wire pwr_oe4;\r |
| 46 | wire cross_lo;\r |
| 47 | wire cross_hi;\r |
| 48 | wire dbg;\r |
| 49 | \r |
| 1c38843b |
50 | lo_read #(5,10) dut(\r |
| 6658905f |
51 | .pck0(pck0),\r |
| 1c38843b |
52 | .ck_1356meg(ck_1356meg),\r |
| 53 | .ck_1356megb(ck_1356megb),\r |
| 54 | .pwr_lo(pwr_lo),\r |
| 55 | .pwr_hi(pwr_hi),\r |
| 56 | .pwr_oe1(pwr_oe1),\r |
| 57 | .pwr_oe2(pwr_oe2),\r |
| 58 | .pwr_oe3(pwr_oe3),\r |
| 59 | .pwr_oe4(pwr_oe4),\r |
| 6658905f |
60 | .adc_d(adc_d),\r |
| 61 | .adc_clk(adc_clk),\r |
| 1c38843b |
62 | .ssp_frame(ssp_frame),\r |
| 63 | .ssp_din(ssp_din),\r |
| 64 | .ssp_dout(ssp_dout),\r |
| 65 | .ssp_clk(ssp_clk),\r |
| 66 | .cross_hi(cross_hi),\r |
| 67 | .cross_lo(cross_lo),\r |
| 68 | .dbg(dbg),\r |
| 30f2a7d3 |
69 | .lo_is_125khz(lo_is_125khz),\r |
| 70 | .divisor(divisor)\r |
| 71 | );\r |
| 72 | \r |
| 73 | integer idx, i, adc_val=8;\r |
| 6658905f |
74 | \r |
| 75 | // main clock\r |
| 76 | always #5 pck0 = !pck0;\r |
| 77 | \r |
| 6658905f |
78 | task crank_dut;\r |
| 79 | begin\r |
| 80 | @(posedge adc_clk) ;\r |
| 30f2a7d3 |
81 | adc_d = adc_val;\r |
| 82 | adc_val = (adc_val *2) + 53;\r |
| 6658905f |
83 | end\r |
| 84 | endtask\r |
| 85 | \r |
| 86 | initial begin\r |
| 87 | \r |
| 88 | // init inputs\r |
| 89 | pck0 = 0;\r |
| 90 | adc_d = 0;\r |
| 1c38843b |
91 | ssp_dout = 0;\r |
| 30f2a7d3 |
92 | lo_is_125khz = 1;\r |
| 1c38843b |
93 | divisor = 255; //min 16, 95=125Khz, max 255\r |
| 6658905f |
94 | \r |
| 95 | // simulate 4 A/D cycles at 125Khz\r |
| 30f2a7d3 |
96 | for (i = 0 ; i < 8 ; i = i + 1) begin\r |
| 6658905f |
97 | crank_dut;\r |
| 98 | end\r |
| 99 | $finish;\r |
| 100 | end\r |
| 6658905f |
101 | endmodule // main\r |
projects / proxmark3-svn / blame