As a JS dev, I have never really tried serious watchface development for Pebble until now with the introduction of the Alloy JS framework. Being able to write modern JS is great (please bring the same conveniences to pkjs!), but I am constantly running into memory issues that I have no idea how to d…

I second this! I’m running into constant “fxAbort memory full” errors in the emulator with a watchface I’m building and I’m having a heck of a time trying to troubleshoot it! The watchface is moderately complex (uses location, networking, clay settings, etc.) but it’s not SO complicated that I wou…

The comments in my mdbl.c file might help a little, you can apparently control the size of the virtual memory allocations, I just don’t have much experience doing this. Without a debugger I’m basically using trial and error (and frankly some GitHub Copilot, so be warned) to try to optimize the JS an…

Well, xsbug is not yet supported but is planned: fxMapArchive failed - Pebble watchface build with Alloy · Moddable-OpenSource/moddable · Discussion #1602 · GitHub For now, we need to rely on instrumentation added via ModdableCreationRecord flags: ModdableCreationRecord creation = { .recordSize …

cr0ybot - you are my “hero of the week” :smiley: . I ‘stole’ your mdbl.c for my own watchface where I was running into constant memory errors and … it just worked. Errors gone. I tweaked from there; I was able to go quite a bit lower on the memory allocation before the errors returned. I dug aroun…

I’m glad it was helpful! Unfortunately the things I was trying to do were seemingly too much for Alloy so I switched to C, but I would like to try again for something simpler. Also since the project was completely rewritten, the link above no longer works. Here’s a permalink to the last version of …

Alloy debugging with xsbug?

Watchapp/Face Developers Corner

Topic		Replies	Views
fxAbort Memory Issues with new update Watchface discussion	2	69	June 24, 2026
AlloyJS WatchFace and Health Data Watchapp/Face Developers Corner	11	265	May 5, 2026
SDK 4.17 emulator firmware ignores `ModdableCreationRecord` memory sizes, causing apps to crash on launch Watchapp/Face Developers Corner	0	27	July 23, 2026
Using pebble/vibes in CloudPebble w/Alloy crashes the emulator Watchapp/Face Developers Corner	2	67	May 21, 2026
Is there a plan to enable alloy on the Core 2 Duo? Watchapp/Face Developers Corner	4	263	March 10, 2026

Alloy debugging with xsbug?

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