Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 2 of 2

Thread: Teensy 4.0 - Is the JTAG exposed?

  1. #1
    Junior Member
    Join Date
    Aug 2019
    Posts
    2

    Teensy 4.0 - Is the JTAG exposed?

    Hi Just wondering if the JTAG was exposed for chip on the the Teensy 4.0

    Maybe some of the unmarked round pads on the back of the board?

    Thanks

    Martin

  2. #2
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    9,033
    Not as published no. Paul did identify most of the rounds pads in one post - IIRC they were there for device factory testing of the numerous voltages and such critical to detecting the proper T4 function.

    There was a note about a non-specific future idea potentially utilizing IIRC the bootloader CPU for debugging support in some fashion.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •