alarmset.v

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//模块：闹钟设置模块
//功能：设定闹钟的开关、闹钟的时间
//输入：当前模式Mode，设置选择SetSel，设置脉冲CPin，Reset，
//输出：闹钟开关(AlarmEn)，整点报时开关AlarmHourEn
//		起闹时间(AAM,AHour12,AHour,AMin)
`timescale 1ns / 100ps
module AlarmSet(Mode,SetSel,Clk,CPin,Reset,
	AAM,AHour,AHour12,AMin,
	AlarmEn,AlarmHourEn);
	input [1:0]Mode;
	input [2:0]SetSel;
	input CPin,Clk,Reset;
	output [5:0] AHour;
	output [6:0] AMin;
	output [4:0] AHour12;
	output AAM,AlarmEn,AlarmHourEn;
	reg AlarmEn,AlarmHourEn;
	wire HourSetCE,MinSetCE,AlarmEnSet,AlarmHourEnSet;
	//Mode==11进入闹钟模式，SetSel==00调闹钟开关 01调小时 10调分钟 11整点报时开关
	assign {HourSetCE,MinSetCE,AlarmEnSet,AlarmHourEnSet}
			=(Mode==2'b11)?(
			(SetSel[1:0]==2'b00)?{CPin,3'b00}:(
			(SetSel[1:0]==2'b01)?{1'b0,CPin,2'b0}:(
			(SetSel[1:0]==2'b10)?{2'b0,CPin,1'b0}:{3'b00,CPin}))
			):4'b000;
		
	//Counter for Minute
	BCD2Count U_Minute
	(
		.CE(MinSetCE),
		.Clk(Clk),
		.Count(AMin),
		.Reset(Reset)
	);
	defparam U_Minute.Begin = 0;
	defparam U_Minute.End = 'h59;
	defparam U_Minute.Size = 7;	
	
	//Counter for Hour
	BCD2Count U_Hour
	(
		.CE(HourSetCE),
		.Clk(Clk),
		.Count(AHour),
		.Reset(Reset)
	);
	
	defparam U_Hour.Begin = 0;
	defparam U_Hour.End = 'h23;
	defparam U_Hour.Size = 6;	   
	
	Hour24_12 U_Hour24_12(AHour,AHour12,AAM);

	always @(negedge Reset or posedge Clk)  //set Enable of Alarm
		begin
			if (!Reset)AlarmEn<=1;
			else if (AlarmEnSet) AlarmEn<=~AlarmEn;
		end
	
	always @(negedge Reset or posedge Clk)  //set Enable of Alarm
		begin
			if (!Reset)AlarmHourEn<=1;
			else if (AlarmHourEnSet) AlarmHourEn<=~AlarmHourEn;
		end	
endmodule