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user113695

Member since Jun 2020 • Last active Feb 2024
  • 13 conversations
  • 57 comments

JavaScript novice and tinkerer.

Most recent activity

  • in Bangle.js
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    This is all very exciting. Years ago (for the Bangle 1) I wrote an STL viewer that does some of the heavy lifting in C (viewstl in the app store). Back then I did all the math library function (mostly trig functions) in JS and passed the results into C (simple arithmetic fp ops worked fine, albeit not using the fpu).
    I have a half-finished Space Shuttle lander game that uses 3d graphics. My approach was to fill arrays with polygon screen coordinates in C and then call graphics routines in JS, but your approach of accessing the screen buffer directly from native code seems better performance wise, Felipe. I might adopt that approach, thanks for figuring all this out, very impressive!

  • in Bangle.js
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    Tested again (after updating to version 0.28 of the Recorder app), it seems to work fine now. Not sure what the issue was previously.
    Thanks for the help.

  • in Bangle.js
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    Thanks. Yes, Log GPS was checked.
    The GPS coordinate columns are just empty in the downloaded CSVs.
    I will investigate further on my end, maybe I really just got very unlucky with GPS locks. I just wanted to make sure this isn't some regression in the nightly builds or newer versions of the Recorder app.

  • in Bangle.js
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    Hi,
    For about the last 3 weeks I have been unable to get the 'Recorder' app (version 0.27) to record any GPS waypoints, on at least about 10 occasions - this has worked fine previously.
    Initially I assumed that I had no GPS fix (this has happened in the past), but for the last several experiments I have made it a point to get a good GPS fix first (confirmed via the GPSInfo app) and walking around outside under open skies for ~20 minutes.
    I am running a nightly build firmware version 2v18.69 (and a slightly earlier builds over the last week) and was wondering if someone else had experienced similar issues, possibly due to a code regression somewhere (maybe related to GPS sharing via GB, which I explicitly turned off for the experiments above)?
    I will try to instrument the Recorder code and keep a console open on the phone to see if I can gain some more insight.
    Thanks,
    Marko

  • in Bangle.js
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    Well, the STL Viewer and Mandel apps also use floats, although I haven't officially ported either to Bangle 2 (just running hacked versions privately). Don't have the watch near me at the moment, I will see how things break - I usually pass floats in flat arrays in and out of compiled C via pointers in my code, so I am not sure where the passing in registers comes in here...
    I also freely concede that a more reliable HR monitor is much higher on most people's priority list than a 3D viewer on a watch... ;-)

  • in General
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    Take a look at the source for the View STL app (Bangle 1 only atm) - I use this technique quite a bit in it.

  • in General
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    Fanoush probably has a point here, regarding the temporary array getting cleaned up in garbage collection.
    Instead I have used a global auxiliary Uint32Array large enough to be in a flat memory area for passing in additional parameters. Not very elegant but works...

  • in General
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    I think I had a similar problem back then. I believe that E.getAddressOf will only return the address to a flat memory area if the Array is above a certain size. Try padding your Uint32Array with a few 0s at the end.

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