How to make GPIO Input and pulled up ?
I would like to configure a GPIO pin on UP2 as the INT pin for my device, which is low active.
I looked both BIOS settings and the UpDemoApp:
The pulled up option is only available for OUTPUT GPIO.
Does anyone have similar experience on GPIO configuration? Is there anyway I can configure an GPIO to be INPUT, pulled up ?
I hope it is not a limitation of UP2 board. If unfortunately so, are there any other UPboards that can support this ?
I'd appreciate for any suggestions, since I've stuck here for a long time !
Thanks !!
Comments
-
From the UpWiki Pinout page of UpBoard:
https://wiki.up-community.org/Pinout
There is a Known Limitations and Issues section :The SoC GPIO pins include configurable internal pull-up resistors, but these are not really effective when the level translators are configured in input mode. If pull-up or pull-down resistors are needed for stabilizing floating input signals on a header pin, the user would need to include these in the external circuit connected to the UP board.
Although this seems only applied to (UP Board Rev. A0.2), I am not sure if UP2 or UP Xtreme has the same limitation too?
Tagged
Categories
- All Categories
- 63 Announcements & News
- 139 Product News - New Product/Product Change Notice/ End-of-life
- 112 Welcome Developers!
- 60 Unboxing & Project Sharing
- 114 Tech Updates
- 3.6K UP Products
- 119 UP 7000
- 25 UP Squared i12
- 24 UP Xtreme i12
- 14 UP Squared Pro 7000
- 1 UP Element i12 Edge
- 24 UP Squared V2
- 65 UP 4000
- 23 UP Xtreme i11
- 34 UP Squared 6000
- 59 UP Squared Pro
- 135 UP Xtreme
- 820 UP Squared
- 1.4K UP Board
- 74 UP Core Plus
- 217 UP Core
- 3 UP Xtreme Lite
- 40 UP AI Edge
- 265 Starter Kits & Peripheral