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STM32L152 Nucleo I2C problem...

Question asked by on Apr 9, 2015
I have bought two of these Nucleo boards to evaluate the I2C, I have downloaded the STM32Cube_FW_L1_V1.1.0 examples. They compile fine and download to the boards however none of the four board to boar examples work. I have made one board the master and the other a slave. I tried with and without 10k pull ups and I get data on the bus but the slave does not acknowledge it's address and thus they just timeout. 

Can someone help? 

I'm also interested in learning how to different information between them once they are working.