I tried the I2C error messages - out of curiosity I run the code with both USE_I2C1 and USE_I2C2 flags. As you can see on the plot, most of the time the messages I was receiving were from bus 2, and only occasionally from bus 1. Do you know how to set both messages to be sent on the same update rate?
![i2c_line](https://f.cloud.github.com/assets/2790461/383721/adf1f26a-a623-11e2-85de-ab5993a08037.png)