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change the way clk_en is generated

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This commit is contained in:
Raphaël Jacquot 2019-03-04 19:59:00 +01:00
parent f502451548
commit 7e0f4a9c0f
1 changed files with 5 additions and 18 deletions
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23
saturn_top.v
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@ -80,8 +80,7 @@ always @(posedge clk) begin
test <= {test[6:0], test[7]};
delay <= { delay[2:0], delay[3]};
if (delay[0]) clk_en <= 1'b1;
if (clk_en) clk_en <= 1'b0;
clk_en <= delay[0]?1'b1:1'b0;
if (reset) begin
clk_en <= 1'b0;
@ -176,26 +175,14 @@ initial begin
end
always @(posedge clk_25mhz) begin
delay <= delay + 26'b1;
// led <= char_counter[7:0];
if (delay[`TEST_BIT]) begin
delay <= `DELAY_START;
reset <= btn[1];
clk2 <= ~clk2;
end
reset <= btn[1];
delay <= delay[`TEST_BIT]?`DELAY_START:delay + 26'b1;
clk_en <= delay[`TEST_BIT]?1'b1:1'b0;
led[7] <= halt;
led[6] <= char_send;
led[5] <= serial_busy;
if (clk2 && !halt) begin
clk_en <= 1'b1;
end
if (clk_en) begin
clk_en <= 1'b0;
end
led[3] <= clk_en;
// led[1:0] <= phase;
end
endmodule