There are many types of hardware peripherals that can be used to
generate a 120 kHZ clock signal depending upon your application.

What do you need a 120 kHZ clock signal for?  

- Kal.

dding wrote:
> 
>     I want to generate squares from parallel in the highest frequency and
> stable needed. pthread_create() and pthread_make_periodic_np() only give me
> the stable square wave about 30k HZ . I need 120k HZ or more.
> 
>     I think I can use rtl_request_irq() to register a timer handler and use
> rtl_hard_enable_irq() to enable it! but I don't know how to do it in detail
> ! Who can help me ? Thanks a lot!
> 
>             dding
> 
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