Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.

Infrared PDA Locator

  • 21-10-2004 04:07PM
    #1
    pbarry
    Registered Users, Registered Users 2 Posts: 194 ✭✭


    I want to create an application on a PDA using J2ME.

    It will locate the PDA based on Infrared signals received from emitters placed at various points.

    I understand the J2ME side of things but I've never included Infrared in an application before!!

    Any idea of how to incorporate infrared functionality into my application?

    Any tips on Infrared API's or where to begin researching?? I've googled for ages but I'm still none the wiser!!

    Cheers.


Comments

  • #2
    stevenmu
    Moderators, Society & Culture Moderators Posts: 9,688 Mod ✭✭✭✭stevenmu


    Infrared ports are generally exposed by the operating system as serial comm ports so that's what you need to be googling for.

    Are you aware that the range of infrared on PDAs is generally very short and they're directional aswell ? This doesn't really affect the programming side of things but it does mean that in practice the PDA will have to close to and pointing at an emitter.


  • #3
    pbarry
    Registered Users, Registered Users 2 Posts: 194 ✭✭pbarry


    Cheers stevenmu, I'll keep the PDA infrared limitation in mind. I'm currently just trying to come up with a 4th year project proposal, but I'm hitting brick walls for every idea.

    I posted a thread yesterday regarding another idea. The thread is "J2ME PDA Locator Application" in Programming Forum. It utilises Hotspot MAC address. Caught between the two ideas!


  • #4
    Hobbes
    Registered Users, Registered Users 2 Posts: 21,264 ✭✭✭✭Hobbes


    AFAIR there are two kinds of Infra-red signals. One is for data transfer and another is for remote controls. Some PDAs support both.

    With the remote control based signal it is a lot less fussy then the data transfer one but not good for data. So you don't have to be close and just be pointing in the general direction of the transmitter.


Advertisement