Re: LF: Raspberry PI ,gpio pin 4 clock rate under 32 KHz HOW ?

["Graham" <g8fzk@g8fzk.fsnet.co.uk>]

Joe,

Yes , that  can be  done , but  relies  on a constant   cpu  'load'  , not 
sure as  to  how much  jitter  there  could be  using  that  method . seems 
the  documentation  is a bit thin , if you  want to  go out  side the  usual 
..
Tnx-G,

--------------------------------------------------
From: <jcraig@mun.ca>
Sent: Wednesday, March 26, 2014 10:25 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: Raspberry PI ,gpio pin 4 clock rate  under  32 KHz HOW ?

> Hi Graham,
>
> This is probably too simplistic, but you can toggle the output with
> a sleep(t) between to make a square f=1/(2t).
>
> Cheers
> Joe VO1NA
>
> On Wed, 26 Mar 2014, Graham wrote:
>
> > Raspberry PI ,gpio pin 4 clock rate  under  32 KHz HOW ?
> >
> > Q  Is there  a  way  to  produce a  audio  frequency  clock  . from  gpio 
> > pin - 4  ?
> > Dividing  the  main clock  , would  appear to be  limited to   app 
> > 32KHz
> > is there  another  way  to  produce  lower  / audio  frequency's  ?
> >
> > Tnx -G,