RE: [Paparazzi-devel] Lisa/L Uart Ports

[mark.griffin]

Hi Antoine,
Thanks for confirming that. 

However, as uart2 is not 5v tolerant and uart3 is 5v tolerant, it seems more 
appropriate/safer to assign uart3 to telemetry as there may be some modems that 
run only at 5v. Also, as the Spektrum RX is 3.3v only, it would seem more 
appropriate to connect it to uart2.

So, I suggest that the Eagle schematics are not modified and the default 
settings in the software are modified.

FYC, Mark

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of antoine drouin
Sent: vendredi, 25. mars 2011 12:46
To: address@hidden
Subject: Re: [Paparazzi-devel] Lisa/L Uart Ports

Hi Mark

You are right the default assignment is

  uart1=GPS, uart2=telemetry, uart3=Spektrum primary RX,
uart5=Spektrum_secondary RX

but this is all configurable.

We'll put the right defaults in the eagle file as soon as we make a
new revision of lisa/L

Regards

Poine


On Thu, Mar 24, 2011 at 9:23 AM,  <address@hidden> wrote:
> I noticed that there is an inconsistency in the assignment of uart2 and
> uart3 on the Lisa/L.
>
>
>
> The schematic diagrams
> (http://svn.sv.gnu.org/viewvc/paparazzi-hardware/trunk/lisa/v1.1/lisa_l.sch?view=markup&root=paparazzi&pathrev=6438)
> indicate that:
>
> uart1=GPS, uart2=Spektrum primary RX, uart3=telemetry, uart5=Spektrum
> secondary RX.
>
>
>
> Whereas the code (/conf/boards/lisa_l_1.0.makefile/)and some other diagrams
> on the Wiki indicate that:
>
>  uart1=GPS, uart2=telemetry, uart3=Spektrum primary RX, uart5=Spektrum
> secondary RX
>
>
>
> I suspect that the code is correct. Can someone confirm which one is
> correct?
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
>

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