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Keil forum cerial port to I2C??

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cerial port to I2C??

gabriel bashaar over 14 years ago

I HAVE ANOTHER QUESTION:

I like to interface the serial port of my PC to a I2C bus. does anyone have a schematic and software for that? thanks advanced.

and another question:

I have to design a master I2C that will command around 100 slaves distributed over 200-307m distance, is there any precautions to consider with such a number of slaves and such distances.

ou are thanks

0 Tamir Michael over 14 years ago

200-307m

"m" as in meter, millimeter or...?
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0 Mike Kleshov over 14 years ago

I have to design a master I2C that will command around 100 slaves distributed over 200-307m distance, is there any precautions to consider with such a number of slaves and such distances.

Well, I2C will not work with 300 meters of distance and 100 slaves. It's not designed for that. It's designed for inter-chip communications on a PCB.
You should look at RS-485 instead.
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0 ²erik malund over 14 years ago in reply to Mike Kleshov

You should look at RS-485 instead.
I totally agree with Mike and add you will need 1/8 load transceivers for it.

Erik

1/4 will do for now but Murphy states that you will some day run over 128
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