Re: [Lcd4linux-devel] display on WRAP-Board - how fast is i2c? ho w good is the lpc connector?

[Stefan K. <ste...@cr...>]

Hi Luis,

Luis.F.Correia schrieb am 25.07.2006 15:27:
> 
> For the sake of completeness, here's an update to the schematics:
> 
> The PCF is powered by +5V, but the I2C inputs are biased to
> +3.3v, which is the correct voltage level of the WRAP board.

My datasheet says that voltage between 2.5V and 6.0V are valid. Must I
provide 5V also? And where to take ...

>> > you'll need to add the specific /dev entries.
>> 
>> Be free to provide me wiht your major/minor numbers. My 
>> devices are currently
>> 
>> ls -al /dev/i2*
>> crw-r--r--    1 root     root      89,   0 Jul 25 13:06 /dev/i2c-0
>> crw-r--r--    1 root     root      89,   1 Jul 25 13:06 /dev/i2c-1

> If pcf8574 must _not_ be loaded. If it is, then lcd4linux will not work.

O.k.

> The messages around loading the i2c bus including the scx200_acb.

There are no messages ..

MfG

Stefan