LED Documented (sec*) 2.0

/*

*Team Id:			SM#2349
*Author List:		(Premraj,Siddesh,Viraj,Siddharth)
*Filename:			LED
*Theme:				Soil Monitoring Bot
*Input:				(clk_50, id, reset)
*Output:				(R1, G1, B1, R2, G2, B2, R3, G3, B3)

*/


module LED(
input clk_50,
input [6:0]id,				//id of the color received
input [1:0]reset,			//reset so that one color doesn't get detected multiple times
output R1,					//Output variables for each LED
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];					//Assigning Output Variables
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