LED Documented (sec*)

module LED(
input clk_50,
input [6:0]id,              //id of the color received
input [1:0]reset,
output R1,
output G1,
output B1,
output R2,
output G2,
output B2,
output R3,
output G3,
output B3
);reg [8:0]rgb = 9'b000000000;          //rgb value is stored together in this variable(3 bits each)
reg clk_1=0;                                    //for 2.5 MHz cll
reg [1:0]count=0;                               //Count for color case
reg [20:0]sec=0;
reg [4:0]C_COUNT=0;
reg flag = 0;                                   //Is enabled when to detect color

always @(posedge clk_50)begin               //Converts 50 MHz clk to 1 MHz
    if(reset==2'b01)
    begin
        clk_1<=0;
        C_COUNT<=0;
    end
    if(C_COUNT == 49)begin
        C_COUNT <= 1;
    end else begin
        C_COUNT <= C_COUNT + 1;
    end
    clk_1 <= (C_COUNT > 10);
end


always @(posedge clk_1)
begin
    if(reset==2'b01)
    begin
        rgb <= 9'b000000000;        //Variable storing rgb vlaue is reset
        count <= 0;
        flag <= 0;
    end
    if(id == 0)
    begin
        flag <= 1;                      //flag resets to 1, to detect color only once
    end
    if((id == 1) && (flag == 1))            //if id 1, red color is stored in rgb variable
    begin
        rgb[3*count+2] <= 1;
        rgb[3*count+1] <= 0;
        rgb[3*count+0] <= 0;
        count <= count + 1;
        flag <= 0;
    end
    else if((id == 2) && (flag == 1))       //if id 2, green color is stored in rgb variable
    begin
        rgb[3*count+2] <= 0;
        rgb[3*count+1] <= 1;
        rgb[3*count+0] <= 0;
        count <= count + 1;
        flag <= 0;
    end
    else if((id == 3) && (flag == 1))       //if id 3, blue color is stored in rgb variable
    begin
        rgb[3*count+2] <= 0;
        rgb[3*count+1] <= 0;
        rgb[3*count+0] <= 1;
        count <= count + 1;
        flag <= 0;
    end

    if(reset == 2'b11)
    begin
        sec <= sec+1;

        if(sec < 1000000)
        begin
            rgb <= 9'b111111111;
        end else begin
            rgb <= 9'b0;
        end
    end
end

assign R3 = rgb[8];
assign G3 = rgb[7];
assign B3 = rgb[6];
assign R2 = rgb[5];
assign G2 = rgb[4];
assign B2 = rgb[3];
assign R1 = rgb[2];
assign G1 = rgb[1];
assign B1 = rgb[0];


endmodule