Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 5 of 5

Thread: Using Reset on ILI9341 board

  1. #1
    Junior Member
    Join Date
    Jan 2017
    Posts
    15

    Using Reset on ILI9341 board

    I am working on a library for the ILI9341 and I am making a lot of changes to code and to some information on an SD card. When I push the reset button on the Teensy, I am finding that the display device gets "stuck" unless I power it and the teensy down and then re-program the teensy. I've been experimenting a little bit with the reset pin-- looks like pulling it low and then setting it high again in fact causes a reset. Can anyone offer more concrete parameters? Thanks.

    Ed

  2. #2
    Senior Member Projectitis's Avatar
    Join Date
    Feb 2018
    Location
    New Zealand
    Posts
    180
    Hi Ed, I've only just got my display so haven't started coding yet - but I've done a bit of reading of the ILI9341 datasheet.
    It contains tons of useful info. SOme stuff that may help:
    - Using the reset pin, page 218 has a bunch of info, including timing for the pulse
    - You can send a command to the display (Software reset). Page 90

  3. #3
    Junior Member
    Join Date
    Jan 2017
    Posts
    15
    Thanks for the link. Hardware reset is easy to implement, and seems to have been at least partially helpful. Hopefully, if this library works, more to come.

  4. #4
    Senior Member+ KurtE's Avatar
    Join Date
    Jan 2014
    Posts
    9,018
    On some boards that I am using these displays, I tie the displays reset line to the CPU reset line, so it gets reset each time the processor resets...

    I think the first place I saw that done was with @FrankB's flex board: https://forum.pjrc.com/threads/36869-T3-x-Flexiboard(-)

  5. #5
    Senior Member Projectitis's Avatar
    Join Date
    Feb 2018
    Location
    New Zealand
    Posts
    180
    Good tip, KurtE!

Posting Permissions

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