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hi_read_tx: remove jerry-riged hysteresis based receiver

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This future got obsolete by a x-correlation based receiver.

This reverts commit 24fe4df.
This commit is contained in:
Andreas Dröscher 2018-08-18 22:14:20 +02:00
commit 4c6ca8d5e2
1 changed files with 3 additions and 16 deletions
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19
fpga/hi_read_tx.v
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@ -71,21 +71,8 @@ always @(negedge ssp_clk)
assign ssp_frame = (hi_byte_div == 3'b000);
// Implement a hysteresis to give out the received signal on
// ssp_din. Sample at fc.
assign adc_clk = ck_1356meg;
assign ssp_din = 1'b0;
// ADC data appears on the rising edge, so sample it on the falling edge
reg after_hysteresis;
always @(negedge adc_clk)
begin
if(& adc_d[7:0]) after_hysteresis <= 1'b1;
else if(~(| adc_d[7:0])) after_hysteresis <= 1'b0;
end
assign dbg = ssp_frame;
assign ssp_din = after_hysteresis;
assign dbg = ssp_din;
endmodule
endmodule