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Thread: XM Station updating - Confusion galore..

  1. #1
    Maximum Bitrate pyros's Avatar
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    XM Station updating - Confusion galore..

    Can anyone clarify this for me please?

    I've been searching and searching, but all the info I've found is incomplete (I think). I've seen a few replies from guino saying this has been discussed before, but I can't seem to find the threads.

    From what I understand:
    - XMPCR does not automatically update, so RR polls it and updates manually.
    - XMD1000 units automatically updates

    The problem is I read somewhere on here (or atleast thought I did) that the XM Station List on the XM screen only updates once per minute. Did I misread this?

    Looking at the code, on the frmSkin.frm there is a timer that runs every .1 sec (as per the comments) and within this timer there is an XM if/else block which checks the XMQueue. The way I understand the XMQueue to work is that it polls the serial port to check for incoming data and stores it accordingly.

    So am I right to assume that the XM station list (with the XMD1000 receiver) updates live rather than in a static interval (ie: 60 seconds) ? Or does it just update the internal variables and the xm playlist/station list viewable to the user is updated (for example) once per minute?

    If it is updated live, is it only the current channel, currently viewable channels or all channels in the playlist?

    If anyone could please help clarify this it would be greately appreciated...

    Thanks,
    Chris
    2004 Ford Mustang Mach 1
    Specs: Epia M2-1000, 512mb ram, SB Audigy NX, Lilliput 7" Touchscreen, M2-ATX, DVD, 160gb HDD, gps, obdII, wifi, bluetooth, XM radio, HQCT and Logitech wireless gamepad.
    Install Status: DONE

    My XM FAQ

  2. #2
    Constant Bitrate DeadlyAP1's Avatar
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    I do not know if this will help you, but it is my experience with the XMD1000.

    The unit appears to update the channels live exactly like the XM Xpress (stand alone unit) reciever in my other car, if not faster and independantly of one another. The channels update track info both on the current channel and the ones listed on the screen at the time. I have about 10 visible at any given time with my setup. this is very handy and I use it to see what I want to listen to next based on what is playing on other channels.

  3. #3
    Maximum Bitrate pyros's Avatar
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    Thanks for the reply Deadly... that does somewhat clear it up... when teh channels update.. is it all at once or do they update independently as the songs change?

    Thanks,
    Chris
    2004 Ford Mustang Mach 1
    Specs: Epia M2-1000, 512mb ram, SB Audigy NX, Lilliput 7" Touchscreen, M2-ATX, DVD, 160gb HDD, gps, obdII, wifi, bluetooth, XM radio, HQCT and Logitech wireless gamepad.
    Install Status: DONE

    My XM FAQ

  4. #4
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    guino's Avatar
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    There are two types of updates RR does with the channels. They're very similar for both the XMD and XMPCR.

    1-RR constantly polls the currently listed stations of the playlist (live)
    2-Every minute or so, RR will update LABELS of code "XMINFO;*" which are basically dynamic labels that can display what's on a specific station (outside the playlist and on any screen of RR). This function is mostly provided for weather and traffic statuses.

    RR doen't keep track of what's playing on ALL stations -- only the currently listed (meaning, in current view), but as soon as you scroll through the list, RR starts updating the contents of the newly displayed stations immediately (live). This provides for faster updates for the stations in display, specially when you have made a favorites list of stations.
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  5. #5
    Maximum Bitrate pyros's Avatar
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    Thanks for the reply guino, that clears it up. I guess I got the XMINFO confused with the regular list..

    Thanks,
    Chris
    2004 Ford Mustang Mach 1
    Specs: Epia M2-1000, 512mb ram, SB Audigy NX, Lilliput 7" Touchscreen, M2-ATX, DVD, 160gb HDD, gps, obdII, wifi, bluetooth, XM radio, HQCT and Logitech wireless gamepad.
    Install Status: DONE

    My XM FAQ

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