Search

Technical Discussion Group Forum

This forum is provided for user discussion. While Beacon EmbeddedWorks support staff and engineers participate, Beacon EmbeddedWorks does not guarantee the accuracy of all information within in the Technical Discussion Group (TDG).

The "Articles" forums provide brief Articles written by Beacon EmbeddedWorks engineers that address the most frequently asked technical questions.

To receive email notifications when updates are posted for a Beacon EmbeddedWorks product download, please subscribe to the TDG Forum of interest.

TDG Forum

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 14 Nov 2011 01:15 PM by  richard.laborde@logicpd.com
GPIO pin mappings
 2 Replies
Sort:
You are not authorized to post a reply.
Author Messages
brian.jarvis
New Member
New Member
Posts:


--
29 Jun 2011 01:12 PM
    Hello - I'm trying to perform a timing test using the AM3517 EVM dev kit. What I'd like to do is trigger an interrupt using either one of the pushbuttons or one of the dip switches from the bank of user switches (S2) Then I have some code which will execute an ISR upon receiving the interrupt. That ISR generates an edge on another GPIO pin. I will use an oscilloscope to measure the amount of time it takes from the moment of triggering the interrupt to the moment of the response edge generated by my code. This code is easy. What isn't (thus far) is figuring out the mapping between the user switches (or pushbuttons) and IRQs, and also what the GPIO pin mappings are for generating the output edge. I would like to use one of the user LEDs for the output edge. Could anyone point me towards a document/page/resource that identifies how the user I/O lines (dip switches, pushbuttons, LEDs) on the evm board map onto the available GPIO numbers and IRQs that the linux kernel can use the gpio-sysfs library with?

    Thanks,
    Brian
    david.lorek@gmail.com
    New Member
    New Member
    Posts:


    --
    14 Nov 2011 12:31 PM
    I'm having trouble locating any documentation that includes a detailed pin description for the AM3517 EVM. Can anyone point me to one?
    richard.laborde@logicpd.com
    Basic Member
    Basic Member
    Posts:247


    --
    14 Nov 2011 01:15 PM
    David,

    Is the Hardware Specification not sufficient for your needs?
    You are not authorized to post a reply.