Re: [Gumstix-users] I2C pull ups on the DuoVero

[Ash C. <ash...@gm...>]

There are pull-ups to 1.8V internal to the DuoVero board on I2C2 and
I2C3 signals.
(The text is buried in Section 2.6 of
http://gumstix.org/images/duovero_srm_latest.pdf)

--Ash

On Thu, Aug 22, 2013 at 4:38 AM, Conor O'Rourke
<con...@sc...> wrote:
> If the Duovero is similar to the Overo (which I don't know anything
> about) then I'd say the answer is no - there are no pullups. I see the
> Toby board for the Overo has 1.5K pull ups on the I2C3 lines on the
> 1.8V side. Is this a safe assumption?
>
> Thanks,
>
> Conor.
>
>
> On Thu, Aug 22, 2013 at 12:20 PM, Conor O'Rourke
> <con...@sc...> wrote:
>> Hi all,
>>
>> Can I assume that there are no pull ups internal to the Duovero on
>> i2c2 and i2c3? The docs say that all i2c interfaces are pulled to 1.8V
>> but that's under the Internal Signals section so I assume it only
>> applies to that section?
>>
>> I suppose I could just get out an ammeter, connect from i2c2-sda to
>> ground through it and see how much current flows but I'd thought I'd
>> ask here first.
> [snip]
>
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