Re: [Gumstix-users] HWUART RTS/CTS

[Andrei R. <ar...@ya...>]

cross 49-52, should be 48-51

--- Andrei Rylin <ar...@ya...> wrote:

> GPIOs 49-52 are never used by anything bluetooth,
> but they are needed for compact flash. Alternatively
> HWUART may use pins 42-45 which are shared with
> BTUART.
> Read more in
>
http://download.intel.com/design/pca/applicationsprocessors/manuals/27878002.pdf
> page 13 and/or
>
http://download.intel.com/design/pca/applicationsprocessors/manuals/27869302.pdf
> page 4-4
> 
> 
> --- Polychronis Ypodimatopoulos <ypod@MIT.EDU>
> wrote:
> 
> > Thanks for the reply.
> > 
> > This suggestion seems to work, but as the guide
> says
> > 
> > (http://docwiki.gumstix.org/Gumstix_UARTs#HWUART),
> > you loose the 
> > wifistix if you move HWUART to gpio 48,49,50,51.
> > However, I 'm not using bluetooth and I need to
> > access to all 4 pins of 
> > the HWUART.
> > Can I access them somewhere else using a thumbstix
> > or breakout?
> > 
> > Thanks,
> > Pol
> > 
> > 
> > 
> > Andrei Rylin wrote:
> > > Make sure that RTS and CTS pins are configured,
> > > I use the following in one of the files
> > > in /etc/init.d/
> > >
> > > echo -n "HWUART RxD "; echo AF1 in >
> > /proc/gpio/GPIO49
> > >               
> > > echo -n "HWUART TxD "; echo AF1 out >
> > > /proc/gpio/GPIO48               
> > > echo -n "HWUART CTS "; echo AF1 in >
> > /proc/gpio/GPIO50
> > >               
> > > echo -n "HWUART RTS "; echo AF1 out >
> > > /proc/gpio/GPIO51
> > >
> > > --- Polychronis Ypodimatopoulos <ypod@MIT.EDU>
> > wrote:
> > >
> > >   
> > >> I 'm trying to use the HWUART with RTS/CTS. I
> > have a
> > >> connex400 and a 
> > >> thumbstix and supposedly I can use the HW TX/RX
> > pins
> > >> and the Y1_RTS, 
> > >> Y1_CTS pins that can be found next to the PWM
> > pins
> > >> of the thumbstix.
> > >> My assumptions are:
> > >>
> > >> -HWUART is 3.3V level
> > >> -Y1_RTS, Y1_CTS are enabled and are part of the
> > >> HWUART
> > >> -ckermit (which I compiled in the buildroot) is
> > >> compatible with RTS/CTS 
> > >> (SET FLOW RTS/CTS)
> > >>
> > >> ... but this doesn't work....
> > >> any clues?
> > >> Thanks!
> > >>
> > >> p.
> > >>
> > >>
> > >>     
> > >
> >
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