diff options
Diffstat (limited to 'ecp5/synth/blinky.v')
| -rw-r--r-- | ecp5/synth/blinky.v | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/ecp5/synth/blinky.v b/ecp5/synth/blinky.v index ac7c6ea3..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 [3:0] led_pin, output gpio0_pin); +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; - (* BEL="X0/Y35/PIOA" *) (* 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)); - (* BEL="X4/Y71/PIOA" *) (* 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)); - (* 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" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_1 (.B(led_pin[1]), .I(led[1])); - (* BEL="X0/Y26/PIOA" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_2 (.B(led_pin[2]), .I(led[2])); - (* BEL="X0/Y26/PIOC" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_3 (.B(led_pin[3]), .I(led[3])); + (* 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])); - (* BEL="X0/Y26/PIOB" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_4 (.B(led_pin[4]), .I(led[4])); - (* BEL="X0/Y32/PIOD" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_5 (.B(led_pin[5]), .I(led[5])); - (* BEL="X0/Y26/PIOD" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_6 (.B(led_pin[6]), .I(led[6])); - (* BEL="X0/Y29/PIOD" *) (* IO_TYPE="LVCMOS33" *) - TRELLIS_IO #(.DIR("OUTPUT")) led_buf_7 (.B(led_pin[7]), .I(led[7])); + (* 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])); - (* BEL="X0/Y62/PIOD" *) (* 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) @@ -54,24 +54,24 @@ module top(input clk_pin, input btn_pin, output [3:0] 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; // Tie GPIO0, keep board from rebooting - TRELLIS_SLICE #(.MODE("LOGIC"), .LUT0_INITVAL(16'hFFFF)) vcc (.F0(gpio0)); + assign gpio0 = 1'b1; endmodule |