[En-Nut-Discussion] TWI initialization - new attempt

[Tim Tait]

The SCL and SDA lines must idle HIGH. The AVR master will assume another 
master has the bus if it sees SCL low. Those 2 lines should be pulled 
high after a reset, and stay that way until AVR master starts to send 
TWI transactions. So that may be your problem, the next question is why.

Tim

Peter Sodermanns wrote:

> Douglas Pearless schrieb:
>
>> Do you have any pullup resistors on the SDA and SCL lines?
>
>
> Yes. Both 1.5 KOhm.
>
> Peter
>
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