I2C awful slow

Matthias Katzengruber katzengruber at gmail.com
Wed Aug 27 10:45:37 CEST 2008

Hello guys,

I'm not sure if this is the right mailing list.
Is there a possibility to speed up I2C?
Because currently it seems to me, that there is a fix delay of 10ms 
between each time I want to read/write something to I2C. ( from userspace)
Actually it should be possible to do that much faster.
The openmoko has I2c with fastmode. (400kbit/s)
Has anyone an idea, why it is so awful slow?
I use the phone with some additional i2c-pwm-moduls for controlling an 
helicopter and I need to speed that up.
Thanks for your help.


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