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Looking for i2c (TWI) using USI example (AVR Butterfly ATmega169)

2006-12-15 by James Ronald

Tonight I tried to compile the i2c examples in AVRlib.  I found that the AVR 
Butterfly does not support i2c the same as the ATmega8, 128, 16, 163 and 
such.  Instead, the 169 uses the USI to do TWI.   I did find Atmel 
application note 310 which describes how to go about setting up USI to do 
TWI but I was hoping to find another example as well.  I have searched for 
the past few hours with little luck.  I'm surprised that I could not find 
examples of connecting an AVR Butterfly to a SRF08 an i2c compus or such. 
Anyway, if anyone has a TWI USI example I would be appreciative.

Much Thanks
Jim Ronald

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