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ecp5: Blinky tweaks

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-07-11 10:09:02 +02:00
parent 610adfef7e
commit eac5a6dbd8
2 changed files with 24 additions and 24 deletions
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34
ecp5/synth/blinky.v
View File

@ -1,13 +1,16 @@
module top(input clk_pin, output [3:0] led_pin, output gpio0_pin);
module top(input clk_pin, input btn_pin, output [3:0] led_pin, output gpio0_pin);
wire clk;
wire [7:0] led;
wire btn;
wire gpio0;
(* BEL="X0/Y35/PIOA" *) (* IO_TYPE="LVCMOS33" *)
TRELLIS_IO #(.DIR("INPUT")) clk_buf (.B(clk_pin), .O(clk));
(* BEL="X4/Y71/PIOA" *) (* IO_TYPE="LVCMOS33" *)
TRELLIS_IO #(.DIR("INPUT")) btn_buf (.B(btn_pin), .O(btn));
(* BEL="X0/Y23/PIOC" *) (* IO_TYPE="LVCMOS33" *)
TRELLIS_IO #(.DIR("OUTPUT")) led_buf_0 (.B(led_pin[0]), .I(led[0]));
(* BEL="X0/Y23/PIOD" *) (* IO_TYPE="LVCMOS33" *)
@ -30,27 +33,38 @@ module top(input clk_pin, output [3:0] led_pin, output gpio0_pin);
(* BEL="X0/Y62/PIOD" *) (* IO_TYPE="LVCMOS33" *)
TRELLIS_IO #(.DIR("OUTPUT")) gpio0_buf (.B(gpio0_pin), .I(gpio0));
localparam ctr_width = 28;
localparam ctr_width = 24;
localparam ctr_max = 2**ctr_width - 1;
reg [ctr_width-1:0] ctr = 0;
reg [9:0] pwm_ctr = 0;
reg dir = 0;
always@(posedge clk)
ctr <= ctr + 1'b1;
always@(posedge clk) begin
ctr <= btn ? ctr : (dir ? ctr - 1'b1 : ctr + 1'b1);
if (ctr[ctr_width-1 : ctr_width-3] == 0 && dir == 1)
dir <= 1'b0;
else if (ctr[ctr_width-1 : ctr_width-3] == 7 && dir == 0)
dir <= 1'b1;
pwm_ctr <= pwm_ctr + 1'b1;
end
reg [9:0] brightness [0:7];
localparam bright_max = 2**10 - 1;
reg [7:0] led_reg;
genvar i;
generate
for (i = 0; i < 8; i=i+1) begin
always @ (posedge clk) begin
if (ctr[ctr_width-1 : ctr_width-3] > i)
brightness[i] <= 10'h3FF;
else if (ctr[ctr_width-1 : ctr_width-3] == i)
if (ctr[ctr_width-1 : ctr_width-3] == i)
brightness[i] <= bright_max;
else if (ctr[ctr_width-1 : ctr_width-3] == (i - 1))
brightness[i] <= ctr[ctr_width-4:ctr_width-13];
else if (ctr[ctr_width-1 : ctr_width-3] == (i + 1))
brightness[i] <= bright_max - ctr[ctr_width-4:ctr_width-13];
else
brightness[i] <= 0;
led_reg[i] <= ctr[9:0] < brightness[i];
led_reg[i] <= pwm_ctr < brightness[i];
end
end
endgenerate

14
ecp5/synth/ulx3s_empty.config
View File

@ -1,19 +1,5 @@
.device LFE5U-45F
.comment Lattice Semiconductor Corporation Bitstream
.comment Version: Diamond (64-bit) 3.10.0.111.2
.comment Bitstream Status: Final Version 10.25
.comment Design name: wire_impl1.ncd
.comment Architecture: sa5p00
.comment Part: LFE5U-45F-6CABGA381
.comment Date: Sun Jul 8 15:46:42 2018
.comment Rows: 9470
.comment Cols: 846
.comment Bits: 8011620
.comment Readback: Off
.comment Security: Off
.comment Bitstream CRC: 0x66BA
.tile CIB_R10C3:PVT_COUNT2
unknown: F2B0
unknown: F3B0