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PICList Thread
'[PIC]: I2C Slave responds to 2 I2C addresses simul'
2001\07\24@121722 by Pete Mahowald

picon face
I'd like to have a software routine for Microchip PICs that can be a slave
on 2 I2C addresses at the same time (composite device?).




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2001\07\24@151425 by Olin Lathrop

face picon face
> I'd like to have a software routine for Microchip PICs that can be a slave
> on 2 I2C addresses at the same time (composite device?).

The Microchip IIC hardware can't do this, so you would have to code it
manually.  Unfortunately doing a IIC slave is trickier than a master because
the master controls the clock.  What about a second cheap PIC with IIC
hardware communicating to the first PIC by some other means?


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Olin Lathrop, embedded systems consultant in Littleton Massachusetts
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2001\07\25@092626 by Alan B. Pearce

face picon face
> I'd like to have a software routine for Microchip PICs that can be a slave
> on 2 I2C addresses at the same time (composite device?).

Can you use the broadcast address as the second address? Probably not a wise
way to go, but done right may solve your problem.

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