Change Release Notes
This release is minor and the update focus is on the EZ-Script i2c read/write commands. The i2c is normally a confusing protocol due to the addressing issues. I have created the i2c commands in EZ-Script to figure out all addressing conversion for you
Click here to read about i2c: http://www.ez-robot.com/Community/Forum/posts.aspx?threadId=322
Click here to locate the i2c port on your EZ-B: http://www.ez-robot.com/Tutorials/Hardware.aspx
For example, the confusion behind the i2c addressing lies in shifting the 7 bit address into an 8 bit address, and setting the LSB to 0 or 1 depending on the direction of the data. Does that sound confusing? Good, because you do not need to worry about any of that with ARC!
If you communicating with an i2c device (for example an Arduino or Compass, etc) - you may be given one of many address types....
Quote:
Device Address: 0xa0or
Device Address: 0x50
or
Device Read Address: 0x50 Device Write Address: 0x51
The above list of addresses are all the same - surprisingly. In any other environment, you would need to understand how they are the same to know how to use them. You would need to convert between 7 bit and 8 bit of 0xa0 to 0x50. You would then also need to convert the 0x50 to 0x51. Wow, so confusing! Well, ARC makes it easy.
In fact, you can use ANY i2c device address - without needing to format or convert the bytes. ARC will figure it out for you You simply connect the device to your i2c port, read the manual to find the i2c address, and enter it in ARC's EZ-Script i2cWrite() or i2cRead() commands.
- Release() fix
- i2cWrite() and i2cRead() do not need device address conversion
- Change tracking color by ControlCommand(). See below example
Tracking Color Change Command
ControlCommand("Camera", CameraColorTracking, "Red" )
or
ControlCommand("Camera", CameraColorTrackingEnable, "Blue" )
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The EZ peezy continues...Thank You DJ!
Nice! Just in time for my I2C bits and bobs that are on their way to me. As always, thanks DJ.
OK, I'm fixen to show my ignorance here. I've been really interested in the 12C port but don't really understand it. What types of devices can I run through the 12C port?
I have a optical shaft encoder on one of my DC motors that I cant figure out how to use with EZ-B. Is there a device out there that can interface with EZ-B that will let me use this encoder now?
You will soon dave
Humm, a clue. I love mysteries.
http://forums.parallax.com/showthread.php/99160-List-of-I2C-devices...for you Dave!
Wow, thanks. Now I have something to read this afternoon.
As I said way back in the beginning of our journey....
There is one ring that rules them ... EZ aye !