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F28069 communication with RPi via I2C

Hi there,

I am using the C2000 F28069 launchpad as the I2C slave for the Raspberry Pi. I can sufficiently read data from the Pi, and I want to be able to write back data to the Pi when the Pi requests a read condition. I have been able to send a byte to the Pi using I2caRegs.I2CDXR, and then setting the stop bit, however, the line continues to transmit additional 0xFF bytes until the I2C line crashes. 

How do I use the C2000 F28069 as a I2C slave device and write to the master (Pi) when the master calls read?

Thanks.