Hi, I use the opencores i2c verilog (http://www.opencores.org/projects/i2c/) in a small FPGA to implement an I2C interface on an embedded system. I've just upgraded to version 2.8 of the I2C code, and have written algorithm/adapter drivers for that interface. The driver does not yet support everything that the verilog core is capabale of, but does do enough to support the devices we have on the card (LM83, MAX6550, EEPROM). Since most of the hard work is done by the verilog the drivers are quite simple. I've implemented them following the "bit" model, with an algorithm driver to do the transfers and adapter drivers to provide access to the registers implemented in the chip (all these do is hide the register addresses and widths), so it should be easily portable to new cards that use the same verilog. Is this of interest? John Morris john.morris at spirentcom.com
