[Paparazzi-devel] I2C Questions

[Kurtis Kraemer]

Hello,

 

I just received an ArduIMU that I would like to integrate into my Tiny2.11. I also have Eagle Tree Airspeed and Altitude sensors that I have not yet integrated.

 

Each of these sensors uses I2C, but I am uncertain whether or not I can use all of these sensors simultaneously through the single I2C bus on the Tiny/TWOG.

 

From what I can tell from the wiki (http://paparazzi.enac.fr/wiki/Airspeed_sensor#Making_hardware_known_to_the_Autopilot), I can set a particular I2C address for each module:

 

<param name="AIRSPEED_ETS_I2C_DEV" value="i2c1"/>

 

However, is there a limit to how many can be used? i.e. "i2c0", "i2c1", "i2c2", etc. Also, what is the parameter name for setting the ArduIMU address?

Is there anything else that I need to change to get them to work together?

 

As for wiring, do I just connect the SDA and SCL of each sensor in parallel with each other, or in series?

 

Thanks!

 

- Kurtis