On Tue, May 5, 2015 at 4:29 PM, Hessam Mohammadmoradi <[email protected]> wrote:
> Hello, > > I am trying to the same thing, and I had the same problem. I was able to > successfully read from I2C for the first time. After doing massive search, > I found out that TelosB pins are open drain and you need to use pull up > resistors between VCC, SCL and SDA pins. Resistor capacity does not matter > ( I used 20K). > I2C by design is open collector/drain. It says so in all the i2c specs I've looked at. glad you figured it out. > > Thanks, > Hessam > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher
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