Re: [Gumstix-users] Robostix pin D.0 (I2C SCL) doesn't drive high (using i2c-test)

[VaibhavGhadiok <vai...@gm...>]

They are not loaded.


Dave Hylands wrote:
> 
> Hi Vaibhav,
> 
> On Fri, Oct 30, 2009 at 7:14 PM, VaibhavGhadiok
> <vai...@gm...> wrote:
>>
>> On the other hand if I change the i2c-test program on the robostix to
>> drive
>> the pin high by default (initially), before it accepts any input., then I
>> notice that the pin only gets driven to 2.5 V.
>>
>> Maybe the gumstix pins are in some state that cause the voltage to drop.
>> Since I don't do anything to the gumstix side of things. This is without
>> running the gumstix i2c-test program.
> 
> Just to clarify - you need to make sure that the i2c-pxa and i2c-dev
> drivers are NOT loaded on the gumstix when using the i2c-test.
> Otherwise they will see the activity on the SCL and SDA lines and may
> get confused and may try to drive the lines.
> 
> -- 
> Dave Hylands
> Shuswap, BC, Canada
> http://www.DaveHylands.com/
> 
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