diff options
Diffstat (limited to 'ecp5/synth/blinky.v')
| -rw-r--r-- | ecp5/synth/blinky.v | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/ecp5/synth/blinky.v b/ecp5/synth/blinky.v index 36ec7ae3..9c6b187b 100644 --- a/ecp5/synth/blinky.v +++ b/ecp5/synth/blinky.v @@ -1,46 +1,46 @@ module top(input clk_pin, input btn_pin, output [7:0] led_pin, output gpio0_pin); - wire clk; - wire [7:0] led; + wire clk; + wire [7:0] led; wire btn; wire gpio0; - (* LOC="G2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("INPUT")) clk_buf (.B(clk_pin), .O(clk)); + (* LOC="G2" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("INPUT")) clk_buf (.B(clk_pin), .O(clk)); - (* LOC="R1" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("INPUT")) btn_buf (.B(btn_pin), .O(btn)); + (* LOC="R1" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("INPUT")) btn_buf (.B(btn_pin), .O(btn)); - (* LOC="B2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_0 (.B(led_pin[0]), .I(led[0])); - (* LOC="C2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_1 (.B(led_pin[1]), .I(led[1])); - (* LOC="C1" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_2 (.B(led_pin[2]), .I(led[2])); + (* LOC="B2" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_0 (.B(led_pin[0]), .I(led[0])); + (* LOC="C2" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_1 (.B(led_pin[1]), .I(led[1])); + (* LOC="C1" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_2 (.B(led_pin[2]), .I(led[2])); (* LOC="D2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_3 (.B(led_pin[3]), .I(led[3])); + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_3 (.B(led_pin[3]), .I(led[3])); - (* LOC="D1" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_4 (.B(led_pin[4]), .I(led[4])); - (* LOC="E2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_5 (.B(led_pin[5]), .I(led[5])); - (* LOC="E1" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_6 (.B(led_pin[6]), .I(led[6])); + (* LOC="D1" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_4 (.B(led_pin[4]), .I(led[4])); + (* LOC="E2" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_5 (.B(led_pin[5]), .I(led[5])); + (* LOC="E1" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_6 (.B(led_pin[6]), .I(led[6])); (* LOC="H3" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_7 (.B(led_pin[7]), .I(led[7])); + TRELLIS_IO #(.DIR("OUTPUT")) led_buf_7 (.B(led_pin[7]), .I(led[7])); - (* LOC="L2" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) gpio0_buf (.B(gpio0_pin), .I(gpio0)); + (* LOC="L2" *) (* IO_TYPE="LVCMOS33" *) + TRELLIS_IO #(.DIR("OUTPUT")) gpio0_buf (.B(gpio0_pin), .I(gpio0)); 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 [ctr_width-1:0] ctr = 0; + reg [9:0] pwm_ctr = 0; reg dir = 0; - always@(posedge clk) begin - ctr <= btn ? ctr : (dir ? ctr - 1'b1 : 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) @@ -54,19 +54,19 @@ module top(input clk_pin, input btn_pin, output [7:0] led_pin, output gpio0_pin) 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] <= 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] <= pwm_ctr < brightness[i]; - end - end + for (i = 0; i < 8; i=i+1) begin + always @ (posedge clk) begin + 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] <= pwm_ctr < brightness[i]; + end + end endgenerate assign led = led_reg; |