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Altera_Forum
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14 years ago

Down Counting State Machine problem

Greetings I have a state machine that needs to count down from a given number (0-9) while at the same time toggling back and fourth to another state machine. So if I have the number thre...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Yes, I am counting down from (400) for simulation purposes

Here is my latest... Still having problems with signal tap 

when HighError1 =>
     
     ErrorLED <= '0';
     FLTline  <= '1';
     shortwait <= shortwait - 1;
      if (shortwait = 0) then 
      state <= HighError2;
      shortwait <= halfsecdelay;
      else state <= HighError1;
      end if;
     
    when HighError2 =>
          
     if(HighBits = "0000")then
      state <= waitone;
      longwait <= twosecdelay;
      shortwait <= halfsecdelay;
     elsif(HighBits > "0000")then
      shortwait <= (shortwait - 1);
      ErrorLED <= '1';
      FLTline  <= '1';
      if(shortwait = 0)then
       HighBits <= (HighBits - "0001");
       longwait <= twosecdelay;
       shortwait <= halfsecdelay;
       state <= HighError1;
      else state <= HighError2;
      end if;
     else state <= HighError2;
     end if;