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fix 'hf iclass snoop'

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* code deduplication: use ISO15693 snoop function
* speed up SnoopIso15693(), reduce DMA buffer size
* add jamming option '-j' to 'hf iclass snoop'
* fix issue #882
* whitespace fixes
This commit is contained in:
pwpiwi 2019-11-08 14:27:09 +01:00
commit be09ea8603
11 changed files with 166 additions and 817 deletions
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8
fpga/hi_reader.v
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@ -139,7 +139,7 @@ begin
// These are the correlators: we correlate against in-phase and quadrature
// versions of our reference signal, and keep the (signed) results or the
// resulting amplitude to send out later over the SSP.
if(corr_i_cnt == 6'd0)
if (corr_i_cnt == 6'd0)
begin
if (minor_mode == `FPGA_HF_READER_MODE_SNIFF_AMPLITUDE)
begin
@ -213,7 +213,7 @@ begin
end
// for each Q/I pair report two reader signal samples when sniffing. Store the 2nd.
if(corr_i_cnt == 6'd32)
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.
@ -221,10 +221,10 @@ begin
// ssp_clk should be the adc_clk divided by 64/16 = 4.
// ssp_clk frequency = 13,56MHz / 4 = 3.39MHz
if(corr_i_cnt[1:0] == 2'b00)
if (corr_i_cnt[1:0] == 2'b00)
begin
// Don't shift if we just loaded new data, obviously.
if(corr_i_cnt != 6'd0)
if (corr_i_cnt != 6'd0)
begin
corr_i_out[7:0] <= {corr_i_out[6:0], corr_q_out[7]};
corr_q_out[7:1] <= corr_q_out[6:0];