code.v

键盘去抖动CPLD设计经过验证,可以直接用数码管显示,同时也希望大家给于新想法

//--------------------------------
//Generate scan code
//Filename : CODE.v
//--------------------------------
module CODE
	(
		CLK,
		SCAN_CODE
	);


	input	CLK;

	output	[1:0]	SCAN_CODE;

	parameter	leng=9;

	reg	[leng-1:0]	REG;

always @ (posedge CLK)
begin
	REG = REG + 9'b01;
end

assign SCAN_CODE = REG[leng-1:leng-2];

endmodule