I'd use conventional async comms with RS485, RS232 or opto-isolated interfaces. Bob Ammerman RAm Systems (contract development of high performance, high function, low-level software) ----- Original Message ----- From: "Quentin" To: Sent: Tuesday, May 15, 2001 6:27 AM Subject: [EE]: serial comms between modules > Hi > I am looking at ways to do low cost serial comms between a couple of > boards: > The boards will be within 1 meter from each other and must be "hot" > swapable. > Any ideas at the best type to use? > Some thoughts of mine: > Not sure if I2C would like the hot swapping because of bus state > start/stop and it not floating when in use. Maybe I can make the last > board I plug in wait in floating state. > What about CAN? Problem I think of is that only very little high end > PICs can do it. Same with USB (overkill, IMO). > RS485, possible, but you need aditional tranceiver IC's. > > Thanks > Quentin > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body