[Gta04-owner] I2C3 on the GTA04

Andreas Kemnade andreas at kemnade.info
Sat Jul 26 19:40:27 CEST 2014


Hi,

On Sat, 2014-07-26 at 18:14 +0200, Andreas Kemnade wrote: 
> Hi,
> 
> On Fri, 2014-07-25 at 07:31 +0200, Dr. H. Nikolaus Schaller wrote: 
> > 
> > The GTA04 has no pull-ups on I2C3, but you can enable the pullups
> > on pinmux. This should solve the "I2C_STAT" message.
> > 
> cb278d1b board/goldelico/gta04/gta04.h        (H. Nikolaus Schaller
> 2010-12-18 12:17:30 +0100 269) MUX_VAL(CP(I2C4_SCL), (IEN  | PTU | EN  |
> M0)) /*I2C4_SCL*/\
> cb278d1b board/goldelico/gta04/gta04.h        (H. Nikolaus Schaller
> 2010-12-18 12:17:30 +0100 270) MUX_VAL(CP(I2C4_SDA), (IEN  | PTU | EN  |
> M0)) /*I2C4_SDA*/\
> 
> It should have them since ages... 
> Do I mix something up? Does something else play with the pinmuxes?
> My AS3935 does mess up the i2c bus with the other sensors on it when
> vaux1 is not enabled. So I am trying to move it to the free one.
> 
> But i2cdetect -r -y 3 does not work properly.
> Anything else missing?
> 
Pullups are enabled, but ...
Perhaps the internal pullups are too weak?

Greetings
Andreas Kemnade



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