easy counter problem..

[suddy72]

anyone got code for counting from 0000 to 1111 but when it gets to 1111 , goes to 0001 instead of 0000 then counts down again, and synchrounous with the clock.

thanks

 

[VSMVDD]

BOOL y; // or use int8
int8 x;

if((x=0x0F)&&(!y)){x=0x01;y=TRUE;}
else{x=0x00;y=FALSE;}

 

[suddy72]

sorry meant to say in VHDL.

What i am doing is counting through adresses and when i get to the bottom of the address array i dont want to go back to address 0000 i want to go back to adresss 0001

 

[VSMVDD]

convert the code aspect to your vhdl structure needed

same thing really

 

[kaustubh]

module counter(q,clk,rst);
output reg [3:0]q;
input clk;
input rst;
//reg p;
always @(posedge clk or negedge rst)
begin
if(!rst)
q <= 4'b0000;
else if (q == 4'b0000)
q <= 4'b0001;
else
q <= q+1;
end
endmodule

 

[kanagavel_docs]

Please correct this code

module counter(q,clk,rst);
output reg [3:0]q;
input clk;
input rst;
//reg p;
always @(posedge clk or negedge rst)
begin
if(!rst)
q <= 4'b0000;
//else if (q == 4'b0000)
else if(q == 4'b1111)
q <= 4'b0001;
else
q <= q+1;
end
endmodule

 

[master_picengineer]

module counter(q,clk,rst);
output reg [3]q;
input clk;
input rst;
//reg p;
always @(posedge clk or negedge rst)
begin
if(!rst)
q <= 4'b0000;
else if (q == 4'b1111)
q <= 4'b0001;
else
q <= q+1;
end
endmodule

Added after 35 minutes:

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