X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/467340996e7af6563070df2c96c374e6a97b1456..9932c55a4accc135200bca93edec8022f8bdcf12:/fpga/hi_read_rx_xcorr.v diff --git a/fpga/hi_read_rx_xcorr.v b/fpga/hi_read_rx_xcorr.v index f816199e..f3e4fecd 100644 --- a/fpga/hi_read_rx_xcorr.v +++ b/fpga/hi_read_rx_xcorr.v @@ -15,9 +15,9 @@ module hi_read_rx_xcorr( 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; + output adc_clk, ssp_frame, ssp_din; input ssp_dout; - output ssp_frame, ssp_din, ssp_clk; + output ssp_clk; input cross_hi, cross_lo; output dbg; input xcorr_is_848, snoop; @@ -88,21 +88,21 @@ begin // These are the correlators: we correlate against in-phase and quadrature // versions of our reference signal, and keep the (signed) result to // send out later over the SSP. - if(corr_i_cnt == 7'd0) + if(corr_i_cnt == 6'd0) begin if(snoop) - begin - // Send only 7 most significant bits of tag signal (signed), LSB is reader signal: - corr_i_out <= {corr_i_accum[13:7], after_hysteresis_prev_prev}; - corr_q_out <= {corr_q_accum[13:7], after_hysteresis_prev}; - after_hysteresis_prev_prev <= after_hysteresis; - end + begin + // Send only 7 most significant bits of tag signal (signed), LSB is reader signal: + corr_i_out <= {corr_i_accum[13:7], after_hysteresis_prev_prev}; + corr_q_out <= {corr_q_accum[13:7], after_hysteresis_prev}; + after_hysteresis_prev_prev <= after_hysteresis; + end else - begin - // 8 most significant bits of tag signal - corr_i_out <= corr_i_accum[13:6]; - corr_q_out <= corr_q_accum[13:6]; - end + begin + // 8 most significant bits of tag signal + corr_i_out <= corr_i_accum[13:6]; + corr_q_out <= corr_q_accum[13:6]; + end corr_i_accum <= adc_d; corr_q_accum <= adc_d; @@ -123,7 +123,7 @@ begin // The logic in hi_simulate.v reports 4 samples per bit. We report two // (I, Q) pairs per bit, so we should do 2 samples per pair. - if(corr_i_cnt == 6'd31) + if(corr_i_cnt == 6'd32) after_hysteresis_prev <= after_hysteresis; // Then the result from last time is serialized and send out to the ARM.