There is a I2C/Rs232 converter someone is selling. I think it is
PIC-based. Of course you can build your own. Since usually the reason to
troubleshoot I2C is incorrect timing or signal levels a DSO is the way to
go. A cheap one that does 1MHz and 2 channels (Game Boy ?) should do it.

Peter

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu