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Title: serial port to I2C?? Post by: gabriel on March 20, 2010, 08:56:24 08:56 Hello:
I like to interface the serial port of my PC to a I2C bus. does anyone have a schematic and software for that? thanks in advance. another question: I have to design a master I2C that will command around 100 slaves distributed over 200-300m distance, is there any precautions to consider with such a number of slaves and such distances. thank you Title: Re: serial port to I2C?? Post by: cncbasher on March 20, 2010, 10:59:33 10:59 http://www.robotfuzz.com/OSIF_guide#serial
take a look here note the article says usb but also has serial Title: Re: serial port to I2C?? Post by: hate on March 20, 2010, 12:09:12 12:09 If u'll a master for the I2C, u just need to communicate ur master with the PC through serial. As for the distance I haven't tried I2C but RS485 works reliable and well but u also have to consider ur data rate on both hardware.
Regards... Title: Re: serial port to I2C?? Post by: gabriel on March 20, 2010, 12:55:06 12:55 Thanks for the link!!
In fact I would like to build an simple interface without a microcontroller, just using the port pins (using inpout32.dll) like many parallel-to-i2c interfaces. In the serial port, there is 2 outputs and 4 inputs which is enough. Certainly we should use a max232 and some transistors, I'm searching for something already made like this. Thanks |