Hi,
I am new to verilog and am looking for code to read a PWM singal coming from a sensor.
can anyone help me?
Best Regards,
Rob Berry

Hi Rob,

what does "read" in your question mean exactly? I assume that the signal
is already a digital signal and has the appropriate amplitude for your
accepting circuit (an FPGA?). Most likely, it will be asynchronous to your
circuit's clock, so you have to synchronize it. The standard two flip-flop
synchronizer will perhaps do. What is the basic frequency of your PWM signal?
Is it significantly lower than your clock frequency? Then "reading" could
mean "count the clock cycles in which the signal is high/low".

Hellwig

Hi,
Thanks for the reply. here is all I know about the PWM signal is 10usec step size.
I agree it need to synchronized with the clock. I did find a PWM_Reader sample on this site but cant get it to work. I must be doing something wrong. I appreciate the help. I am new to Verilog and am learning allot every day.
The code I am trying to get to work is located here:
www.OPENCORES.com/serial_div_uu/web_uploads/pwm_reader.v

Thanks!
Rob

Is this the code you are trying to work with?

What problems are you having?

Dan