mirror of
https://github.com/supleed2/ELEC50003-P1-CW.git
synced 2024-12-23 14:05:49 +00:00
83 lines
1.8 KiB
Coq
83 lines
1.8 KiB
Coq
|
module FpsMonitor(
|
||
|
|
input clk50,
|
||
|
|
input vs,
|
||
|
|
|
||
|
|
// output frame pixel data
|
||
|
|
output reg [7:0] fps,
|
||
|
|
output wire [6:0] hex_fps_h,
|
||
|
|
output wire [6:0] hex_fps_l
|
||
|
|
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
parameter ONE_SEC = 32'd50_000_000;
|
||
|
|
|
||
|
|
reg [3:0] fps_h;
|
||
|
|
reg [3:0] fps_l;
|
||
|
|
|
||
|
|
reg [7:0] rfps;
|
||
|
|
reg [3:0] rfps_l;
|
||
|
|
reg [3:0] rfps_h;
|
||
|
|
|
||
|
|
reg [26:0] sec_cnt;
|
||
|
|
reg pre_vs;
|
||
|
|
wire one_sec_mask;
|
||
|
|
|
||
|
|
assign one_sec_mask = (sec_cnt>= (ONE_SEC - 1'b1) )?1'b1:1'b0;
|
||
|
|
|
||
|
|
always @(posedge clk50)
|
||
|
|
if(one_sec_mask) sec_cnt <= 27'h0;
|
||
|
|
else sec_cnt <= sec_cnt + 1'b1;
|
||
|
|
|
||
|
|
|
||
|
|
always @(posedge clk50) begin
|
||
|
|
pre_vs <= vs;
|
||
|
|
if(sec_cnt == 27'd0) begin
|
||
|
|
rfps <= 8'd0;
|
||
|
|
rfps_h <= 4'd0;
|
||
|
|
rfps_l <= 4'd0;
|
||
|
|
end
|
||
|
|
else if({pre_vs,vs} == 2'b01) begin
|
||
|
|
rfps <= rfps + 1'b1;
|
||
|
|
|
||
|
|
if(rfps_l == 4'd9) begin
|
||
|
|
rfps_l <= 4'd0;
|
||
|
|
rfps_h <= rfps_h + 1'b1;
|
||
|
|
end
|
||
|
|
else rfps_l <= rfps_l + 1'b1;
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
always @ (posedge clk50)
|
||
|
|
if(one_sec_mask) begin
|
||
|
|
fps <= rfps;
|
||
|
|
fps_h <= rfps_h;
|
||
|
|
fps_l <= rfps_l;
|
||
|
|
end
|
||
|
|
|
||
|
|
assign hex_fps_h = (fps_h == 4'd0)?7'h40: //0
|
||
|
|
(fps_h == 4'd1)?7'h79: //1
|
||
|
|
(fps_h == 4'd2)?7'h24: //2
|
||
|
|
(fps_h == 4'd3)?7'h30: //3
|
||
|
|
(fps_h == 4'd4)?7'h19: //4
|
||
|
|
(fps_h == 4'd5)?7'h12: //5
|
||
|
|
(fps_h == 4'd6)?7'h02: //6
|
||
|
|
(fps_h == 4'd7)?7'h78: //7
|
||
|
|
(fps_h == 4'd8)?7'h00: //8
|
||
|
|
7'h10; //9
|
||
|
|
|
||
|
|
assign hex_fps_l = (fps_l == 4'd0)?7'h40: //0
|
||
|
|
(fps_l == 4'd1)?7'h79: //1
|
||
|
|
(fps_l == 4'd2)?7'h24: //2
|
||
|
|
(fps_l == 4'd3)?7'h30: //3
|
||
|
|
(fps_l == 4'd4)?7'h19: //4
|
||
|
|
(fps_l == 4'd5)?7'h12: //5
|
||
|
|
(fps_l == 4'd6)?7'h02: //6
|
||
|
|
(fps_l == 4'd7)?7'h78: //7
|
||
|
|
(fps_l == 4'd8)?7'h00: //8
|
||
|
|
7'h10; //9
|
||
|
|
endmodule
|
||
|
|
|