> On 9/14/05, Manwlis Giannos wrote: > > Hello to all. I'm new to the list and i don't really > > know if i'm addressing the right list. > > I want to interface more than 2 PIC > > micros. How can achieve that? Is the SPI the best > > solution? In 1996, "CAN" (controller area network) was the preferred method of=20 connecting multiple microcontrollers together. It works really well, but=20 unfortunately PICmicros don't have built in support for CAN (some 8051 do,= =20 as far as I know). Some PICmicros have support for I2C, though, and I2C als= o=20 allows you to connect multiple microcontrollers to the same bus. SPI is=20 possible, but unfortunately it requires you to increase the number of pins= =20 used for every device you add, and it isn't really peer-to-peer=20 (multi-master). As Vasile said, you could also use a 4 or 8-bit parallel bu= s=20 with addressing lines, but that will really eat away your I/O capabilities.= =20 Obviously, if you provide more information about what you want to do, that= =20 would help in possible bus selections. Greetings, Maarten Hofman. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist