Jump to content
43oh

Recommended Posts

Quote

 

My I²C device doesn't work with Energia but works on Arduino...

 

Check the usual suspects:

  • Is the I²C bus initialised?
Wire.begin();
  • Does the I²C device run at 3.3V?

Otherwise, use a logic-level converter.

  • Are pull-ups installed?

Try 10, 4.7 or 2.2 kΩ for the SDA and SCL lines.

  • In case the LaunchPad provides multiple I²C ports, is the correct port selected?

Try 

    Wire.setModule(0); // or other port number
    Wire.begin();
  • Still nothing?

Use a logic analyser to trace the signals on the I²C port.

3647962_orig.png.2be967c277e17425d32687c8ac9b3b04.png

(To be continued...)

Link to post
Share on other sites
  • 5 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...