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improve iso15 sniff quality

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This commit is contained in:
Yann GASCUEL 2024-01-18 12:21:21 +01:00
commit fa3c2e386b
2 changed files with 129 additions and 104 deletions
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5
fpga/hi_reader.v
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@ -44,8 +44,13 @@ reg after_hysteresis, after_hysteresis_prev, after_hysteresis_prev_prev;
reg [11:0] has_been_low_for;
always @(negedge adc_clk)
begin
`ifdef WITH_HF_15_LOWSIGNAL
if (& adc_d[7:4]) after_hysteresis <= 1'b1;
else if (~(| adc_d[7:6])) after_hysteresis <= 1'b0;
`else
if (& adc_d[7:0]) after_hysteresis <= 1'b1;
else if (~(| adc_d[7:0])) after_hysteresis <= 1'b0;
`endif
if (after_hysteresis)
begin