vriable length counter

[Altera_Forum]

hello, 

im trying to do a simple morsecode :     library ieee; use ieee.std_logic_1164.all; entity morse is  port ( sw : in std_logic_vector(2 downto 0); e : in std_logic; clock : in std_logic; led : out std_logic_vector(6 downto 0));   end morse; architecture behavioral of morse is signal clk :std_logic:='0'; signal sr : std_logic_vector(15 downto 0):="0000000000000000"; signal n : integer:=0; begin   halfsecclk : process(clock) variable count : integer :=0; begin if clock'event and clock='1' then count:=count + 1; if count = 2 then count :=0; clk <= not clk; end if; end if; end process;   muxes : process(e) begin if e'event and e='0' then case sw is when "000" => sr <= "0000000000011101"; n <=6 ; when "001" => sr <= "0000000101010111"; n <=10 ; when "010" => sr <= "0000010111010111"; n <= 12; when "011" => sr <= "0000000001010111"; n <= 8; when "100" => sr <= "0000000000000001"; n <= 2; when "101" => sr <= "0000000101110101"; n <= 10; when "110" => sr <= "0000000101110111"; n <= 10; when "111" => sr <= "0000000001010101"; n <= 8; when others => null; end case; end if; end process;   counter : process(clk) variable cnt : integer:=0; begin if rising_edge(clk) then   if sr(0)='0' then led <= "1111111"; elsif sr(0)='1' then led <= "0111111"; end if;   sr<="0" & sr(15 downto 1);   end if; end process;   end behavioral;     what i faild to do is to make the counter process shift the (sr) shift register by (n) times then stop and waits for the next value of sw is entered, i have tried many ideas but it didnt worked as i want it to.   any suggestions please ?   thanks in advance

[Altera_Forum]

--- Quote Start ---  what i faild to do is to make the counter process shift the (sr) shift register by (n) times then stop and waits for the next value of sw is entered, i have tried many ideas but it didnt worked as i want it to.   any suggestions please ?  --- Quote End ---     - Did you simulate the design? If so, what were the results? If not, get one and try it.  - What else did you try? What didn't work out as you wanted it to?   Kevin Jennings

[Altera_Forum]

I'll try to explain more on what i want , depending on the input (sw) the register (sr) will assigned a collection of bits, also the signal (n) will be assigned an integer value which is the number of bits in the register, all of this will happen in the first process. 

 in the second process which is clocked i want it to shift the (sr) register for each rising edge clock (n) times.   here is what I've done:   counter : process(clk) begin if rising_edge(clk) then if n/=0 then if sr(0)='0' then led <= "1111111"; elsif sr(0)='1' then led <= "0111111"; end if; n<=n-1; sr<="0" & sr(15 downto 1); end if; end if; end process;  end behavioral;   It's totaly wrong since two processes driving sr and n.   I know what I've done is stuped but I'm new to the vhdl and i came from another enviroment.

[Altera_Forum]

--- Quote Start ---  I'll try to explain more on what i want  --- Quote End ---     I would prefer that you answer the questions I posed instead...repeated here since they are still necessary. - Did you simulate the design? If so, what were the results? If not, get one and try it.  - What else did you try? What didn't work out as you wanted it to?     --- Quote Start ---    depending on the input (sw) the register (sr) will assigned a collection of bits, also the signal (n) will be assigned an integer value which is the number of bits in the register, all of this will happen in the first process.   in the second process which is clocked i want it to shift the (sr) register for each rising edge clock (n) times.   here is what I've done: <snip of partial code>   It's totaly wrong since two processes driving sr and n.   --- Quote End ---      OK, so you know what the problem is, you have two processes each driving a couple of signals...one would think then you know what to do which is to combine them into one process (hint: that's the answer)     --- Quote Start ---  I know what I've done is stuped but I'm new to the vhdl and i came from another enviroment.  --- Quote End ---   It sounds like you know what the problem is, you can't have two drivers for one signal. So what is your question?   Kevin Jennings

[Altera_Forum]

I've got it, thank you K J :)

[Altera_Forum]

can you post your final morse code here? I am trying to do something similar. but cant figure it out 

 thanks :)