Re: [Paparazzi-devel] LISA/M Version Compatibility

[Piotr Esden-Tempski]

Hi,

You will need to at least remove the pull-up resistors on USB_DP and USB_DM 
(R28 and R27) and connect UART1_TX to 3v3 or even better to USB_VBUS to be able 
to use USB. You can also remove R14 and Q2 if you want.

This means for Lisa/M 1.0 that you can only use GPS RX while using USB. That 
was fixed in Lisa/M 2.0 where the use of UART1 got swapped with UART3.

I hope this helps.

Cheers Piotr

--
Transition Robotics Inc.
http://transition-robotics.com
the makers of the Quadshot
Co-Founder, Embedded systems Engineer
Mobile: +1 831 440 7454
Skype: esdentem

On May 4, 2012, at 3:58 AM, Felix Ruess wrote:

> Hi Luke,
> 
> yes, you can of course still use Lisa/M 1.0.
> I think that if you want to use luftboot (the usb bootloader) instead
> of flashing via JTAG you will have to make some minor modifications on
> the usb connector circuit.
> Esden, can you clear this up (and document it on the wiki)?
> 
> Apart from the fact that you have 8 servo connectors now, the actual
> core functionality didn't change significantly.
> http://paparazzi.enac.fr/wiki/Lisa/M#Detailed_Hardware_Revision_History
> 
> So if you already have a Lisa/M 1.0 (and you can fix the usb circuit
> yourself) there is no real need to ditch it.
> 
> Cheers, Felix
> 
> On Fri, May 4, 2012 at 3:04 AM, Luke Ionno <address@hidden> wrote:
>> I have a question about the different LISA versions…  I’ve got a V1.0 board
>> that I bought some time ago, and never got around to playing with, and I was
>> wondering if (a) it is still compatible with the current software release,
>> and (b) if there are any hardware modifications that can/should/must be
>> implemented?  (I’m comfortable with SMT soldering, etc.)  More importantly,
>> would it be worth the effort, or have the V2.0 modifications significantly
>> improved functionality and usability, as a general-purpose [fixed-wing]
>> Paparazzi autopilot?
>> 
>> 
>> 
>> Thanks!
>> 
>> 
>> 
>> -Luke
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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>> 
> 
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