I2C slave Stamp

Archiver

Greetings All,
I was wondering if anyone had any ideas (links, code, etc...) for
running a BS2 as a _slave_ on the I2C bus? I've seen plenty of
examples for master applications, but none for slave. I've searched
this message board, no help - I've searched the internet, no help.
(Interesting side note, the word "slave" in your search terms turns
up more fetish sites than you can shake a stick at.)
Thanks in advance,
Thomas

Archiver

Thomas,

According to the Basic STAMP manual (page 137, the page for the
command I2CIN) the BS2 cannot operate as a slave. The I2C definition
of a master is the device which generates the clock, and initiates
data transfer. The definition of a slave is the device which is
addressed by the master. The BS2 does not have a device type or a
unique address for the I2C bus, and thus cannot operate as a slave. I
have a small I2C tutorial at:
http://www.high-techgarage.com/tutorial/i2c.php which goes over some
of the basics of I2C protocol. There is also a link on that page to a
copy of the I2C bus specification ver 2.1 which goes into lengthy
detail about device types and protocols.

Good luck with your I2C project!

--Jeff Wallace
--Add a RTC, 256k EEPROM and an I2C buss to your BS2
--http://www.high-techgarage.com/products/timekeeper.php

--- In basicstamps@y..., thomas_seeker@y... wrote:
> Greetings All,
> I was wondering if anyone had any ideas (links, code, etc...) for
> running a BS2 as a _slave_ on the I2C bus? I've seen plenty of
> examples for master applications, but none for slave. I've searched
> this message board, no help - I've searched the internet, no help.
> (Interesting side note, the word "slave" in your search terms turns
> up more fetish sites than you can shake a stick at.)
> Thanks in advance,
> Thomas