On Apr 27, 2007, at 8:56 PM, Michael Lorenz wrote:

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> Hello,
>
> looks like the routines in dev/i2c/i2c_bitbang.c don't support  
> synchronisation ( as in - when raising SCL wait until the SCL line  
> is actually up )

Well, some devices supported by that code can't really tell, IIRC,  
which is why it has delay loops instead.

> which gives endless troubles with slow i2c devices, like DDC2  
> monitors.
> Any objections against adding that ( with reasonable bail-out timer  
> of course ) to i2c_bitbang_read_byte() and i2c_bitbang_write_byte() ?
>
> have fun
> Michael
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-- thorpej