Thanks everyone for your help- I used a different MAX232 card (as it
turned out a much cheaper, $3 from ebay one) and all is working. It did
require the rx/tx->ioio wires reversed, and a 'straight through' serial
cable, but it is now all working fine (on my kitchen table). Will test
'in anger' tomorrow!
Thanks again to everyone who replied.
Cheers
Adam
On 15/09/12 06:12, Jacques Legalland wrote:
Hi Simon,
I am sorry, the attached datasheet was too big ...
Have a look page 11 attached.
Cheers.
Jacques Legalland
Bonjour,
Bisous
Bien amicalement
Cordialement
Jacques Legalland
06 13 66 69 82
> Date: Fri, 14 Sep 2012 11:39:55 +0100
> Subject: Re: [Xcsoar-user] IOIO Problems...
> From: simon.taylor...@gmail.com
> To: legall...@hotmail.com
> CC: xcsoar-user@lists.sourceforge.net
>
> On 14 September 2012 11:11, Jacques Legalland
<legall...@hotmail.com> wrote:
> > Hi Adam,
> >
> > First idea :
> > the MAX323 board uses a MAX3232 IC. This IC doesn't respect
exactly the
> > RS232 voltage (+12v, -12v), but only +5v, -5v (See the attached
datasheet).
> > Maybe, this is not enough for the GPSnav which is supplied with 12v.
> > If you have an oscilloscope, you can see on pin 2 & 3 of DB9 if
the GPSnav
> > exchanges with IOIO.
> >
>
> I couldn't find the attached datasheet, but I reckon it may be talking
> about one of the other MAX chips?
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