How much of your I2C source can be easily ported to X86 & ARM ? It would be nice if the top-level was common, and only the bottom-level was specific to different CPU families. I'd like to test & use I2C on both x86 & ARM. == Chris Glur. ------------------------------------------------------------ Chris Burrows wrote:--- An I2C interface is moving closer to the top of my list of things to do. However, if somebody else beats me to it I won't complain :) This will open up connectivity to a wide range of peripheral devices e.g. accelerometers, EEPROMs, digital compasses, DACs, distance, gesture, altitude, temperature, barometric pressure and humidity sensors etc. etc. for use with embedded RISC5 target systems. We have already written driver software and simple examples of their use for a number of these devices in Oberon-07 for ARM Cortex-M3 and M4 microcontrollers.