jks

About

Username
jks
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Member, Administrator, Moderator
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Location
Tauranga, New Zealand RF82ci
Callsign
ZL4VO/KF6VO
Additional information
KiwiSDR support email: support@kiwisdr.com

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  • kiwi.bin fails on PMUX check

    jksjks
    In case anyone is interested I'll explain: For various reasons a user program (one with privileges) cannot directly change the pin mux (PMUX) that determines which device functions and attributes are assigned to the I/O pins of the Sitara processor used on the Beagle. This is specified by device (cape) overlay files used by the kernel and by some other mechanisms. So there is some checking code to make sure the pins are in the state the Kiwi server expects. The panic you saw occurred when one of the unused expansion pins on the P8 connector was detected to have been set as an input with a pull-up rather than a plain input with no pull-up or pull-down. More pins were in unexpected states as shown in the file you attached.

    Now this by itself is not a problem. But the real question is why is this different all of a sudden when there are hundreds of other units out there running without an issue? This is one of the reasons why the Kiwi is shipped with a fixed, known-working Debian distribution. To try and eliminate the side-effects of dependancies like these.


    KA7U

  • Do you want a Facebook Page for KiwiSDR?

    jksjks
    "A" on 2097 is one of HF pirate beacons. Some of the best info is on HF Underground: https://www.hfunderground.com/board/index.php/topic,9478.0.html

    For a discussion of military "letter/marker beacons", some of which are in the Kiwi dx list, see here: https://en.wikipedia.org/wiki/Letter_beacon

    I personally boycott Facebook, but you guys can obviously do what you want. But I won't be contributing there if you do.
    At some point we'll need subcategories for the Kiwi discussions here.

    PA0PJE

  • Is there any gain control?

    jksjks
    Hi Neil,

    If you press the "more" button on the lower right control panel you'll see various AGC parameters that can be adjusted. Changing the Threshold and Slope will effect the gain. There is also a Manual Gain slider that becomes active if you turn the AGC off.

    There is the volume control of course. There is no hardware gain control in the RF front-end. This was a cost tradeoff. 

    MA3101SWL

  • WSPR Upload Fails?

    jksjks
    Okay, I think I know now what this might be. I'll try and get a fix in the next release so everyone can test.
    Thanks for the help!

    Bjarne

  • Blank web page problems

    jksjks
    Something is dreadfully wrong here. Try pulling from git first:
    cdp
    mst
    m git
    mc
    m
    mi
    ku

    rixon

  • Blank web page problems

    jksjks
    This looks like the files in the in-program/in-memory cache have become corrupted somehow. Try building and installing the daemon from scratch:
    cdp
    more Makefile -- the first two lines: what version number does it say you're running?
    msa
    mc
    m
    mi
    ku

    rixon

  • Blank web page problems

    jksjks
    The other thing you can do to get more printf output from the kiwi server program is to run it from the shell instead of as the usual daemon process. Do a "cdp" to get to the build directory. "mst" to stop the daemon. Then "k" to run directly. Not all the kiwi program printfs go to the syslog file to keep the log size under control.

    After you're done and control-C to stop the "k" program. Use "msa" to restart the daemon (or "ku" -- kiwi up).

    rixon

  • Blank web page problems

    jksjks
    What does the javascript console of the browser say? (i.e. option/alt-command-k in Firefox) The built-in web server (mongoose), which is just a monolithic chunk of C code, doesn't keep a traditional web server log file.
    rixon

  • Placing my own labels on my KiwiSDR

    jksjks
    The label system needs a complete overhaul, but that's a separate topic.

    To do what you need there are a couple of options. If you're running a recent release (we're on v1.10 currently) you can edit the labels directly with the browser UI. See here: http://kiwisdr.com/quickstart/#id-user-marker

    But that's kind of cumbersome because you'd have to delete each label, one-at-a-time, from 25 MHz up. Or worse, all of them since none would apply if you only have a transverter connected. So try editing the database file directly. FIrst, login to the Beagle with ssh or PuTTY as root. Type 'cdp' to go the project build directory. 'mst' to stop the server. 'cd ~/kiwi.config'. Make a backup copy: 'cp dx.json dx.json.bak' Then edit the file dx.json using whatever text editor on Debian you can deal with. 'nano' is not too bad. It uses control characters for commands. It has on-screen help. The dx.json file entries are sorted by frequency, so delete the ones you want. Restart the server by doing a 'cdp' and 'ku'.

    Your idea about adding an offset to the displayed frequencies is a good one and I'll add it to the wish list.

    PE2BZ