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This commit is contained in:
Philippe Teuwen 2020-10-06 20:44:23 +02:00
commit 491adacb94
18 changed files with 998 additions and 998 deletions
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38
fpga/hi_simulate.v
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@ -35,8 +35,8 @@ module hi_simulate(
// Power amp goes between LOW and tri-state, so pwr_hi (and pwr_lo) can
// always be low.
assign pwr_hi = 1'b0; // HF antenna connected to GND
assign pwr_lo = 1'b0; // LF antenna connected to GND
assign pwr_hi = 1'b0; // HF antenna connected to GND
assign pwr_lo = 1'b0; // LF antenna connected to GND
// This one is all LF, so doesn't matter
assign pwr_oe2 = 1'b0;
@ -53,7 +53,7 @@ begin
if (& adc_d[7:5]) after_hysteresis <= 1'b1; // if (adc_d >= 224)
else if (~(| adc_d[7:5])) after_hysteresis <= 1'b0; // if (adc_d <= 31)
if (adc_d >= 224)
if (adc_d >= 224)
begin
has_been_low_for <= 12'd0;
end
@ -65,9 +65,9 @@ begin
after_hysteresis <= 1'b1;
end
else
begin
begin
has_been_low_for <= has_been_low_for + 1;
end
end
end
end
@ -100,20 +100,20 @@ end
reg ssp_frame;
always @(negedge adc_clk)
begin
if (mod_type == `FPGA_HF_SIMULATOR_MODULATE_212K)
begin
if (ssp_clk_divider[8:5] == 4'd1)
ssp_frame <= 1'b1;
if (ssp_clk_divider[8:5] == 4'd5)
ssp_frame <= 1'b0;
end
if (mod_type == `FPGA_HF_SIMULATOR_MODULATE_212K)
begin
if (ssp_clk_divider[8:5] == 4'd1)
ssp_frame <= 1'b1;
if (ssp_clk_divider[8:5] == 4'd5)
ssp_frame <= 1'b0;
end
else
begin
if (ssp_clk_divider[7:4] == 4'd1)
ssp_frame <= 1'b1;
if (ssp_clk_divider[7:4] == 4'd5)
ssp_frame <= 1'b0;
end
begin
if (ssp_clk_divider[7:4] == 4'd1)
ssp_frame <= 1'b1;
if (ssp_clk_divider[7:4] == 4'd5)
ssp_frame <= 1'b0;
end
end
@ -143,6 +143,6 @@ always @(*)
assign pwr_oe1 = 1'b0; // 33 Ohms Load
assign pwr_oe4 = modulating_carrier; // 33 Ohms Load
// This one is always on, so that we can watch the carrier.
assign pwr_oe3 = 1'b0; // 10k Load
assign pwr_oe3 = 1'b0; // 10k Load
endmodule