process
begin
clk <= not clk;
wait for 10ns;
end process;
process(clk)
begin
if(clk = '1' and clk'event) then
--Do something
end if;
end process;
Presently I am using 2 process blocks to implement the condition above.
Is there a way I can do it in a single process block?
Something like the code described below. However, the problem with the
code described below is that the rising edge of the clock is never
sensed in the simulation. I tried using a blocking assignment
(variables), but that was not successful either.
I am pretty sure my understanding is missing something. But i cant
figure out what.
process
begin
clk <= not clk;
wait for 10ns;
if(clk = '1' and clk'event) then
--Do something
end if;
end process;
Thanks in advance.
Guest
#5220486
First snippet: Rejoy M. wrote: > process(clk) Second snippet: Rejoy M. wrote: > process You forgot the sensitivity list of the process.
Peter wrote: > You forgot the sensitivity list of the process. There's a wait in the process, therefore there's no need for a sensitivity list Rejoy M. wrote: > Is there a way I can do it in a single process block? Generate the clock without a process: clk <= not clk after 10ns; Or do it that way: process begin wait for 10ns; --Do something end process;
Guest
#5220550
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Guest
#5220553
Rejoy M. wrote: > Something like the code described below. However, the problem with the > code described below is that the rising edge of the clock is never > sensed in the simulation. what is the init value of clk?
No Comment wrote: > Rejoy M. wrote: > >> Something like the code described below. However, the problem with the >> code described below is that the rising edge of the clock is never >> sensed in the simulation. > > what is the init value of clk? The initial value of clk is defined as 0
Thank you for your reply Lothar.