X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ca8a3478d949a03953129ec34d209a9c80079252..5ea2a24839c71ba6e58af937a392a6204b8b4696:/fpga/hi_read_tx.v?ds=sidebyside diff --git a/fpga/hi_read_tx.v b/fpga/hi_read_tx.v deleted file mode 100644 index 819f1697..00000000 --- a/fpga/hi_read_tx.v +++ /dev/null @@ -1,78 +0,0 @@ -//----------------------------------------------------------------------------- -// The way that we connect things when transmitting a command to an ISO -// 15693 tag, using 100% modulation only for now. -// -// Jonathan Westhues, April 2006 -//----------------------------------------------------------------------------- - -module hi_read_tx( - pck0, ck_1356meg, ck_1356megb, - pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4, - adc_d, adc_clk, - ssp_frame, ssp_din, ssp_dout, ssp_clk, - cross_hi, cross_lo, - dbg, - shallow_modulation -); - input pck0, 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; - input ssp_dout; - output ssp_frame, ssp_din, ssp_clk; - input cross_hi, cross_lo; - output dbg; - input shallow_modulation; - -// low frequency outputs, not relevant -assign pwr_lo = 1'b0; -assign pwr_oe2 = 1'b0; - -// The high-frequency stuff. For now, for testing, just bring out the carrier, -// and allow the ARM to modulate it over the SSP. -reg pwr_hi; -reg pwr_oe1; -reg pwr_oe3; -reg pwr_oe4; - -always @(ck_1356megb or ssp_dout or shallow_modulation) -begin - if(shallow_modulation) - begin - pwr_hi <= ck_1356megb; - pwr_oe1 <= 1'b0; - pwr_oe3 <= 1'b0; - pwr_oe4 <= ssp_dout; - end - else - begin - pwr_hi <= ck_1356megb & ~ssp_dout; - pwr_oe1 <= 1'b0; - pwr_oe3 <= 1'b0; - pwr_oe4 <= 1'b0; - end -end - - -// Then just divide the 13.56 MHz clock down to produce appropriate clocks -// for the synchronous serial port. - -reg [6:0] hi_div_by_128; - -always @(posedge ck_1356meg) - hi_div_by_128 <= hi_div_by_128 + 1; - -assign ssp_clk = hi_div_by_128[6]; - -reg [2:0] hi_byte_div; - -always @(negedge ssp_clk) - hi_byte_div <= hi_byte_div + 1; - -assign ssp_frame = (hi_byte_div == 3'b000); - -assign ssp_din = 1'b0; - -assign dbg = ssp_frame; - -endmodule \ No newline at end of file