time_run.v

verilog描述 年月日

`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company: 
// Engineer: 
// 
// Create Date:    20:54:58 04/13/2008 
// Design Name: 
// Module Name:    showchange24or12 
// Project Name: 
// Target Devices: 
// Tool versions: 
// Description: 
//
// Dependencies: 
//
// Revision: 
// Revision 0.01 - File Created
// Additional Comments: 
//
//////////////////////////////////////////////////////////////////////////////////
module time_run(clk, adj , cf , mode , set , shows, showm, showh , day , week , month , year);
    input clk;
    input adj;
    input cf;
    input mode;
    input set;
    output [7:0] shows ;
    output [7:0] showm ;
    output [7:0] showh ;
	 output [7:0] day ;
    output [7:0] week ;
    output [7:0] month ;
	 output [15:0] year ;
	 
reg     ADJ=0 , leap_year=1 ,AMorPM = 0  ,   change = 0  , flag  = 0; 
reg  cls=0  , clm=0 , clh = 0  ;
reg  modestate = 0;

reg[7:0] shows = 8'h00  , showm = 8'h00 , showh = 8'h23 , day = 8'h01  ,  month = 8'h01 ; //2000:01:01:6:00:00:00
reg[2:0] week  = 3'b110  ,  weekback = 3'b110; 
reg[15:0] year = 16'h2000 , yearback = 16'h2000 ;
reg[7:0] hback = 8'h00  , mback = 8'h00 ,   monthback = 8'h01  ,  dayback = 8'h01 ;

reg[7:0] dclk1 = 8'b0000000  , dclk2 = 8'b0000000 , dclk3 = 8'b0000000 ,dclk4 = 8'b0000000 ;
reg[7:0] count = 8'h00   ;
reg[3:0] settime=4'h0;
reg[2:0] circle = 000 ;
reg[3:0] reset = 0;
reg[3:0]      circs = 0;


//------------------------------------clock frequency division , get cls ,clm ,clh ,cld , clw ,clm ,cly----------------



always @(posedge clk)   //get one minute touch off singal  -----cls
begin
   cls = 0 ;
 if(dclk1==59)
    begin
	   cls=1;
		dclk1=0;
     end
	else
	  dclk1 = dclk1 + 1;
end	  


always @(posedge clk)   //get one hour touch off singal    ------clm
begin
clm = 0 ;
if(cls==1)
begin
   
 if(dclk2==59)
    begin
	   clm=1;
		dclk2=0;
     end
	else
	  dclk2 = dclk2 + 1;
end	
end

always @(posedge clk)   //get one  touch off singal     -------clh
begin
clh = 0 ;
if(clm==1)
begin
   
 if(dclk3==23)
    begin	   
		clh   = 1;
		dclk3 = 1;
     end
	else
	  dclk3 = dclk3 + 1;
end	
end

//----------------------------------------------------------------------------------------------------------
always @(posedge clk)
begin
if(mode == 1 & settime == 0)
modestate = modestate + 1;

end

//-------------------------------60 minite reset ,and other circs-------------------------------------------

always @(posedge clk)
begin
reset =0;
  begin
   if(adj==0 & cf==0 & set==0 )
       begin
		    if(count == 59)
		     begin
			  reset =1;
    		  
           end			  
		    else
			  count = count + 1;
			  
		 end
   else if( adj==1 ) 
	     count = 0;
		  
	else if( cf==1 ) 
	     count = 0;

   else if( set==1 ) 
	     count = 0;	
	 end

end


//-------------------------hour ,minute ,year ,month  ,day  set----------------------------------------------

always @(posedge clk)
begin 
if(reset == 1)
 settime = 0;
else
  begin
     if( set==1 )
	         begin
	          settime = settime + 1 ;	  
		          if(settime==1)
		           begin
			        hback = showh;   
                 mback = showm ;
                 yearback = year;	
                 monthback = month;
                 dayback = day ;
					  weekback = week;
			       end		  
	         end
	  
     else 
	        if(modestate==2'b00 & settime>0)
	     circs = 0 ;
	  
 begin

 
case(settime)
4'h1:                                                         //hour   set 
	    begin
		  if(mode == 1)
   		 settime = 0;
	     else
			 begin
		 
			 if(adj==1 & cf==0)                                                    
			       begin
			           
	                       if(hback[7:4]==4'h2)                            
	                         begin
	                           if(hback[3:0] >= 4'h3)
							          hback = 0;
		                
							         else
							         hback[3:0] = hback[3:0]+1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(hback[3:0] == 4'h9)
							         begin
							          hback[3:0] =0;
							          hback[7:4] = hback[7:4]+1;
					               end
                           else							
					            hback[3:0]=hback[3:0]+1;
                           end 
		             
				         circs = 4'h1;  
				      end

            else if(adj==0 & cf==1)                            
                begin
					      if(hback[7:4]==4'h0)                            
	                         begin
	                           if(hback[3:0]== 4'h0)
							         begin
										hback[7:4] = 2;
		                        hback[3:0] = 3;
										 end
							         else
							         hback[3:0]=hback[3:0] - 1;
					                            
			                   end    			        
		                else  
                           begin
		                     if(hback[3:0] == 4'h0)
							         begin
							      hback[3:0] =4'h9;
							      hback[7:4] = hback[7:4] - 1;
					               end
                           else							
					            hback[3:0]=hback[3:0] - 1;
                           end 	
                   circs = 4'h1; 									
					 end	
					 
				end		
           
		   end
			
				
			
			
4'h2  :                                                            //minute set
         begin
			if(mode == 1)
   		 settime = 0;
	     else
			 begin
			     if(adj==1 & cf==0)                                             
			       begin
			           
	                       if(mback[7:4]==4'h5)                            
	                         begin
	                           if(mback[3:0]== 4'h9)
							          begin
										 mback = 0;
		                         end
							         else
							         mback[3:0]=mback[3:0]+1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(mback[3:0] == 4'h9)
							         begin
							      mback[3:0] =0;
							      mback[7:4] = mback[7:4]+1;
					               end
                           else							
					            mback[3:0]=mback[3:0]+1;
                           end 
		             
				          circs = 4'h2; 
				      end

            else if(adj==0 & cf==1)                           
                begin
					      if(mback[7:4]==4'h0)                            
	                         begin
	                           if(mback[3:0]== 4'h0)
							          begin
										 mback[7:4] = 4'h5;
		                         mback[3:0] = 4'h9;
										 end
							         else
							         mback[3:0]=mback[3:0] - 1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(mback[3:0] == 0)
							         begin
							      mback[3:0] = 4'h9;
							      mback[7:4] = mback[7:4] - 1;
					               end
                           else							
					            mback[3:0] = mback[3:0] - 1;
                           end 	
						circs = 4'h2; 			
					 end	
				end	
           				
		   end   
			
       		
				
				
4'h3:                                                        //year set
                begin
				if(mode == 1)
   		 settime = 0;
	     else
			 begin	 
					 
			 if(adj==1 & cf==0)                                         
			       begin
			           
	                      if(yearback[7:4]==4'h9)                            
	                         begin
	                           if(yearback[3:0]== 4'h9)
							          begin
										 yearback[15:0] = 16'h2000;
		                         end
							         else
							         yearback[3:0] = yearback[3:0]+1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(yearback[3:0] == 4'h9)
							         begin
							      yearback[3:0] = 4'h0;
							      yearback[7:4] = yearback[7:4]+1;
					               end
                           else							
					            yearback[3:0] = yearback[3:0]+1;
                           end 
		             
				         circs = 4'h3;  
				      end

            else if(adj==0 & cf==1)                          
                begin
					      if(yearback[7:4]==4'h0)                            
	                         begin
	                           if(yearback[3:0]== 4'h0)
							          begin
										yearback[7:4] = 4'h9;
		                        yearback[3:0] = 4'h9;
										 end
							         else
							         yearback[3:0] = yearback[3:0] - 1;
					                            
			                   end    			        
		               else  
                           begin
		                     if(yearback[3:0] == 0)
							         begin
							      yearback[3:0] = 4'h9;
							      yearback[7:4] = yearback[7:4] - 1;
					               end
                           else							
					            yearback[3:0] = yearback[3:0] - 1;
                           end 			 
					   circs = 4'h3; 
					 end	
					 
				end	
			 	
		   end     
			 
			 
4'h4:                                                         //month set
           
			    begin
				 
				 if(mode == 1)
   		 settime = 0;
	     else
			 begin
			 if(adj==1 & cf==0)                                         
			       begin
			           
	                     if(monthback[7:4]==4'h1)                            
	                         begin
	                           if(monthback[3:0] == 4'h2)
							          begin
										 monthback = 8'h01;
		                         end
							         else
							         monthback[3:0] = monthback[3:0]+1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(monthback[3:0] == 4'h9)
							         begin
							      monthback[3:0] = 0;
							      monthback[7:4] = monthback[7:4]+1;
					               end
                           else							
					            monthback[3:0] = monthback[3:0]+1;
                           end 
		             circs = 4'h4; 
				          
				      end

            else if(adj==0 & cf==1)                           
					   begin  
						  if(monthback[7:4]==4'h0)                            
	                         begin
	                           if(monthback[3:0]== 4'h1)
							          begin
										monthback[7:4] = 4'h1;
		                        monthback[3:0] = 4'h2;
										 end
							         else
							         monthback[3:0] = monthback[3:0] - 1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(monthback[3:0] == 0)
							         begin
							      monthback[3:0] = 4'h9;
							      monthback[7:4] = monthback[7:4] - 1;
					               end
                           else							
					            monthback[3:0]= monthback[3:0] - 1;
                           end 
							circs = 4'h4; 
							end		
					 end	
				
          end			
			
4'h5:                                                         //day set
          
			    begin
				 if(mode == 1)
   		 settime = 0;
	     else
			 begin
				 
			 if(adj==1 & cf==0)                                       
			       begin
			           weekback = weekback + 1;
			              begin
	                       if(dayback[7:4]==4'h3)                            
	                         begin
	                           if(dayback[3:0] >= 4'h1)
							          begin
										 dayback[7:0] = 8'h01;
		                         end
							         else
							         dayback[3:0]=day[3:0]+1;
					                            
			                   end    			        
		                   else  
                           begin
		                     if(dayback[3:0] == 4'h9)
							         begin
							      dayback[3:0] =4'h1;
							      dayback[7:4] = dayback[7:4]+1;
					               end
                           else							
					            dayback[3:0]= dayback[3:0]+1;
                           end 
		                end
				          circs = 4'h5;  
				      end

            else if(adj==0 & cf==1)  
                 begin
                   weekback = weekback - 1;
                     begin                         
					      if(dayback[7:4]==4'h0)                            
	                         begin
	                           if(dayback[3:0]== 4'h1)
							          begin
										dayback[7:4] = 4'h3;
		                        dayback[3:0] = 4'h1;
										 end
							         else
							         dayback[3:0]= dayback[3:0] - 1;