I've had good success w/the MPU6050 in the I2C dev lib.
I'm moving to the STM32 ARM Cortex M4 in the STM32F405/F406 line.
Work is underway to get things working w/the Arduino-like wirish library that's part of libmaple.
I'm thinking after I get the libmaple ported to the STM32F405/F406, I'd be willing to contribute some time to get the core of I2C Dev Lib ported to the STM32.
I saw on the main i2cdevlib page that STM32 was a future target - so if it sounds like my efforts are helpful, please let me know and we can establish any guidelines, etc.
Cheers,
- scott
