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Amended documentation to cover Glance view crash

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Philip Abbey
2026-03-13 10:34:47 +00:00
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Devices.md
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@@ -18,7 +18,7 @@ A user has reported a maximum of 26 items with Ver 3.5. This measurement has sho
As a worked example, for Ver 3.6 working on an `instinct2x` device:
| Feature | Memory (bytes) | Cost (bytes) |
|--------------------------------------|---------------:|-------------:|
|:-------------------------------------|---------------:|-------------:|
| Declared available to application | 98,304 | |
| Measured available to application | 94,112 | (4,192 less) |
| Application used | 65,696 | |
@@ -28,167 +28,188 @@ As a worked example, for Ver 3.6 working on an `instinct2x` device:
Our test menu presently contains a mix of 28 items, consisting of nested group, toggle, tap, info and numeric items with templates. So each item requires (12,624 + 14,856) / 28 = 982 bytes.
## Glance Memory Usage
Using a `venu2` device the Glance view memory statistics are:
| Measure | Memory (bytes) |
|:----------|----------------:|
| Total | 61,344 |
| Peak Used | 32,224 |
| Free | 29,120 |
This means that for older devices listed below, with only 32 kB of Glance memory, the Glance view crashes with an "_Out Of Memory Error_". There is no opportunity in the code to intervene and no way to catch this fatal error. Nor is there any way to disable the Glance view on a device by device basis. Therefore, the only answer at present is to allow the Glance view to crash. It may display "HomeAssistant" as the Glance view text before crashing.
This problem has been explored via a [Github issue](https://github.com/house-of-abbey/GarminHomeAssistant/issues/347). This is now listed as a [known issue](./README.md#known-issues).
## Garmin Devices
The following table details all the devices as at 1 October 2025 and whether they are supported by Garmin HomeAssistant. The available application memory is also detailed so that it can be compared to an application version listed above. Of particular concern are the 'Instinct' range of devices, being the smallest we currently support. New feature requests are now being vetted against how they might affect our ability to support the 'Instinct' range of devices. At some point support may have to be withdrawn in order to allow the Garmin HomeAssistant application to grow further.
The following table details all the devices as at March 2026 and whether they are supported by Garmin HomeAssistant. The available application and glance memory is also detailed so that it can be compared to an application version listed above. Of particular concern are the 'Instinct' range of devices, being the smallest we currently support. New feature requests are now being vetted against how they might affect our ability to support the 'Instinct' range of devices. At some point support may have to be withdrawn in order to allow the Garmin HomeAssistant application to grow further.
| Device | Supported | Application Memory |
|----------------------------|:---------:|--------------------:|
| d2bravo | N | 65,536 |
| d2bravo_titanium | N | 65,536 |
| fenix3 | N | 65,536 |
| fenix3_hr | N | 65,536 |
| fr230 | N | 65,536 |
| fr235 | N | 65,536 |
| fr630 | N | 65,536 |
| fr920xt | N | 65,536 |
| vivoactive | N | 65,536 |
| descentg1 | Y | 98,304 |
| instinct2 | Y | 98,304 |
| instinct2s | Y | 98,304 |
| instinct2x | Y | 98,304 |
| instinctcrossover | Y | 98,304 |
| approachs60 | N | 131,072 |
| enduro | Y | 131,072 |
| fenix5 | Y | 131,072 |
| fenix5s | Y | 131,072 |
| fenix6 | Y | 131,072 |
| fenix6s | Y | 131,072 |
| fenixchronos | Y | 131,072 |
| fr245 | Y | 131,072 |
| fr55 | Y | 131,072 |
| fr645 | Y | 131,072 |
| fr735xt | N | 131,072 |
| fr935 | Y | 131,072 |
| instinct3solar45mm | Y | 131,072 |
| instincte40mm | Y | 131,072 |
| instincte45mm | Y | 131,072 |
| venusq | Y | 131,072 |
| vivoactive3 | Y | 131,072 |
| vivoactive3d | N | 131,072 |
| vivoactive_hr | N | 131,072 |
| edge_520 | N | 262,144 |
| fr255 | Y | 524,288 |
| fr255s | Y | 524,288 |
| approachs50 | Y | 786,432 |
| approachs7042mm | Y | 786,432 |
| approachs7047mm | Y | 786,432 |
| d2airx10 | Y | 786,432 |
| d2mach1 | Y | 786,432 |
| descentg2 | Y | 786,432 |
| descentmk343mm | Y | 786,432 |
| descentmk351mm | Y | 786,432 |
| enduro3 | Y | 786,432 |
| epix2 | Y | 786,432 |
| epix2pro42mm | Y | 786,432 |
| epix2pro47mm | Y | 786,432 |
| epix2pro47mmsystem7preview | Y | 786,432 |
| epix2pro51mm | Y | 786,432 |
| fenix7 | Y | 786,432 |
| fenix7pro | Y | 786,432 |
| fenix7pronowifi | Y | 786,432 |
| fenix7s | Y | 786,432 |
| fenix7spro | Y | 786,432 |
| fenix7x | Y | 786,432 |
| fenix7xpro | Y | 786,432 |
| fenix7xpronowifi | Y | 786,432 |
| fenix843mm | Y | 786,432 |
| fenix847mm | Y | 786,432 |
| fenix8pro47mm | Y | 786,432 |
| fenix8solar47mm | Y | 786,432 |
| fenix8solar51mm | Y | 786,432 |
| fenixe | Y | 786,432 |
| fr165 | Y | 786,432 |
| fr165m | Y | 786,432 |
| fr255m | Y | 786,432 |
| fr255sm | Y | 786,432 |
| fr265 | Y | 786,432 |
| fr265s | Y | 786,432 |
| fr57042mm | Y | 786,432 |
| fr57047mm | Y | 786,432 |
| fr955 | Y | 786,432 |
| fr965 | Y | 786,432 |
| fr970 | Y | 786,432 |
| instinct3amoled45mm | Y | 786,432 |
| instinct3amoled50mm | Y | 786,432 |
| instinctcrossoveramoled | Y | 786,432 |
| marq2 | Y | 786,432 |
| marq2aviator | Y | 786,432 |
| system8preview | N | 786,432 |
| venu2 | Y | 786,432 |
| venu2plus | Y | 786,432 |
| venu2s | Y | 786,432 |
| venu3 | Y | 786,432 |
| venu3s | Y | 786,432 |
| venu441mm | Y | 786,432 |
| venu445mm | Y | 786,432 |
| venusq2 | Y | 786,432 |
| venusq2m | Y | 786,432 |
| venux1 | Y | 786,432 |
| vivoactive5 | Y | 786,432 |
| vivoactive6 | Y | 786,432 |
| approachs62 | N | 1,048,576 |
| d2air | Y | 1,048,576 |
| edge1030 | Y | 1,048,576 |
| edge1030bontrager | Y | 1,048,576 |
| edge1030plus | Y | 1,048,576 |
| edge1040 | Y | 1,048,576 |
| edge1050 | Y | 1,048,576 |
| edge520plus | Y | 1,048,576 |
| edge530 | Y | 1,048,576 |
| edge540 | Y | 1,048,576 |
| edge550 | Y | 1,048,576 |
| edge820 | Y | 1,048,576 |
| edge830 | Y | 1,048,576 |
| edge840 | Y | 1,048,576 |
| edge850 | Y | 1,048,576 |
| edgeexplore | Y | 1,048,576 |
| edgeexplore2 | Y | 1,048,576 |
| edgemtb | Y | 1,048,576 |
| edge_1000 | N | 1,048,576 |
| epix | N | 1,048,576 |
| fr645m | Y | 1,048,576 |
| legacyherocaptainmarvel | Y | 1,048,576 |
| legacyherofirstavenger | Y | 1,048,576 |
| legacysagadarthvader | Y | 1,048,576 |
| legacysagarey | Y | 1,048,576 |
| venu | Y | 1,048,576 |
| venud | Y | 1,048,576 |
| venusqm | Y | 1,048,576 |
| vivoactive3m | Y | 1,048,576 |
| vivoactive3mlte | Y | 1,048,576 |
| vivoactive4 | Y | 1,048,576 |
| vivoactive4s | Y | 1,048,576 |
| d2charlie | N | 1,310,720 |
| d2delta | Y | 1,310,720 |
| d2deltapx | Y | 1,310,720 |
| d2deltas | Y | 1,310,720 |
| descentmk1 | N | 1,310,720 |
| descentmk2 | Y | 1,310,720 |
| descentmk2s | Y | 1,310,720 |
| fenix5plus | Y | 1,310,720 |
| fenix5splus | Y | 1,310,720 |
| fenix5x | Y | 1,310,720 |
| fenix5xplus | Y | 1,310,720 |
| fenix6pro | Y | 1,310,720 |
| fenix6spro | Y | 1,310,720 |
| fenix6xpro | Y | 1,310,720 |
| fr245m | Y | 1,310,720 |
| fr745 | Y | 1,310,720 |
| fr945 | Y | 1,310,720 |
| fr945lte | Y | 1,310,720 |
| marqadventurer | Y | 1,310,720 |
| marqathlete | Y | 1,310,720 |
| marqaviator | Y | 1,310,720 |
| marqcaptain | Y | 1,310,720 |
| marqcommander | Y | 1,310,720 |
| marqdriver | Y | 1,310,720 |
| marqexpedition | Y | 1,310,720 |
| marqgolfer | Y | 1,310,720 |
| gpsmap66 | Y | 2,359,296 |
| gpsmap67 | Y | 2,359,296 |
| gpsmap86 | N | 2,359,296 |
| gpsmaph1 | Y | 2,359,296 |
| montana7xx | Y | 2,359,296 |
| oregon7xx | N | 2,359,296 |
| rino7xx | N | 2,359,296 |
| Device | Supported | Application Memory | Glance Memory |
|:---------------------------|:---------:|-------------------:|---------------:|
| approachs50 | Y | 786,432 | 65,536 |
| approachs60 | N | 131,072 | |
| approachs62 | N | 1,048,576 | |
| approachs7042mm | Y | 786,432 | 65,536 |
| approachs7047mm | Y | 786,432 | 65,536 |
| d2air | Y | 1,048,576 | |
| d2airx10 | Y | 786,432 | 65,536 |
| d2bravo | N | 65,536 | |
| d2bravo_titanium | N | 65,536 | |
| d2charlie | N | 1,310,720 | |
| d2delta | Y | 1,310,720 | |
| d2deltapx | Y | 1,310,720 | |
| d2deltas | Y | 1,310,720 | |
| d2mach1 | Y | 786,432 | 65,536 |
| d2mach2 | Y | 786,432 | 65,536 |
| descentg1 | Y | 98,304 | 32,768 |
| descentg2 | Y | 786,432 | 65,536 |
| descentmk1 | N | 1,310,720 | |
| descentmk2 | Y | 1,310,720 | 32,768 |
| descentmk2s | Y | 1,310,720 | 32,768 |
| descentmk343mm | Y | 786,432 | 65,536 |
| descentmk351mm | Y | 786,432 | 65,536 |
| edge1030 | Y | 1,048,576 | |
| edge1030bontrager | Y | 1,048,576 | |
| edge1030plus | Y | 1,048,576 | |
| edge1040 | Y | 1,048,576 | 65,536 |
| edge1050 | Y | 1,048,576 | 65,536 |
| edge130 | N | | |
| edge130plus | N | | |
| edge520plus | Y | 1,048,576 | |
| edge530 | Y | 1,048,576 | |
| edge540 | Y | 1,048,576 | 65,536 |
| edge550 | Y | 1,048,576 | 65,536 |
| edge820 | Y | 1,048,576 | |
| edge830 | Y | 1,048,576 | |
| edge840 | Y | 1,048,576 | 65,536 |
| edge850 | Y | 1,048,576 | 65,536 |
| edgeexplore | Y | 1,048,576 | |
| edgeexplore2 | Y | 1,048,576 | 65,536 |
| edgemtb | Y | 1,048,576 | 65,536 |
| edge_1000 | N | 1,048,576 | |
| edge_520 | N | 262,144 | |
| enduro | Y | 131,072 | 32,768 |
| enduro3 | Y | 786,432 | 65,536 |
| epix | N | 1,048,576 | |
| epix2 | Y | 786,432 | 65,536 |
| epix2pro42mm | Y | 786,432 | 65,536 |
| epix2pro47mm | Y | 786,432 | 65,536 |
| epix2pro47mmsystem7preview | Y | 786,432 | 65,536 |
| epix2pro51mm | Y | 786,432 | 65,536 |
| etrextouch | Y | 2,359,296 | |
| fenix3 | N | 65,536 | |
| fenix3_hr | N | 65,536 | |
| fenix5 | Y | 131,072 | |
| fenix5plus | Y | 1,310,720 | |
| fenix5s | Y | 131,072 | |
| fenix5splus | Y | 1,310,720 | |
| fenix5x | Y | 1,310,720 | |
| fenix5xplus | Y | 1,310,720 | |
| fenix6 | Y | 131,072 | 32,768 |
| fenix6pro | Y | 1,310,720 | 32,768 |
| fenix6s | Y | 131,072 | 32,768 |
| fenix6spro | Y | 1,310,720 | 32,768 |
| fenix6xpro | Y | 1,310,720 | 32,768 |
| fenix7 | Y | 786,432 | 65,536 |
| fenix7pro | Y | 786,432 | 65,536 |
| fenix7pronowifi | Y | 786,432 | 65,536 |
| fenix7s | Y | 786,432 | 65,536 |
| fenix7spro | Y | 786,432 | 65,536 |
| fenix7x | Y | 786,432 | 65,536 |
| fenix7xpro | Y | 786,432 | 65,536 |
| fenix7xpronowifi | Y | 786,432 | 65,536 |
| fenix843mm | Y | 786,432 | 65,536 |
| fenix847mm | Y | 786,432 | 65,536 |
| fenix8pro47mm | Y | 786,432 | 65,536 |
| fenix8solar47mm | Y | 786,432 | 65,536 |
| fenix8solar51mm | Y | 786,432 | 65,536 |
| fenixchronos | Y | 131,072 | |
| fenixe | Y | 786,432 | 65,536 |
| fr165 | Y | 786,432 | 65,536 |
| fr165m | Y | 786,432 | 65,536 |
| fr230 | N | 65,536 | |
| fr235 | N | 65,536 | |
| fr245 | Y | 131,072 | 32,768 |
| fr245m | Y | 1,310,720 | 32,768 |
| fr255 | Y | 524,288 | 65,536 |
| fr255m | Y | 786,432 | 65,536 |
| fr255s | Y | 524,288 | 65,536 |
| fr255sm | Y | 786,432 | 65,536 |
| fr265 | Y | 786,432 | 65,536 |
| fr265s | Y | 786,432 | 65,536 |
| fr45 | N | | |
| fr55 | Y | 131,072 | 32,768 |
| fr57042mm | Y | 786,432 | 65,536 |
| fr57047mm | Y | 786,432 | 65,536 |
| fr630 | N | 65,536 | |
| fr645 | Y | 131,072 | |
| fr645m | Y | 1,048,576 | |
| fr735xt | N | 131,072 | |
| fr745 | Y | 1,310,720 | 32,768 |
| fr920xt | N | 65,536 | |
| fr935 | Y | 131,072 | |
| fr945 | Y | 1,310,720 | 32,768 |
| fr945lte | Y | 1,310,720 | 32,768 |
| fr955 | Y | 786,432 | 65,536 |
| fr965 | Y | 786,432 | 65,536 |
| fr970 | Y | 786,432 | 65,536 |
| garminswim2 | N | | |
| gpsmap66 | Y | 2,359,296 | |
| gpsmap67 | Y | 2,359,296 | |
| gpsmap86 | N | 2,359,296 | |
| gpsmaph1 | Y | 2,359,296 | |
| instinct2 | Y | 98,304 | 32,768 |
| instinct2s | Y | 98,304 | 32,768 |
| instinct2x | Y | 98,304 | 32,768 |
| instinct3amoled45mm | Y | 786,432 | 65,536 |
| instinct3amoled50mm | Y | 786,432 | 65,536 |
| instinct3solar45mm | Y | 131,072 | 32,768 |
| instinctcrossover | Y | 98,304 | 32,768 |
| instinctcrossoveramoled | Y | 786,432 | 65,536 |
| instincte40mm | Y | 131,072 | 32,768 |
| instincte45mm | Y | 131,072 | 32,768 |
| legacyherocaptainmarvel | Y | 1,048,576 | |
| legacyherofirstavenger | Y | 1,048,576 | |
| legacysagadarthvader | Y | 1,048,576 | |
| legacysagarey | Y | 1,048,576 | |
| marq2 | Y | 786,432 | 65,536 |
| marq2aviator | Y | 786,432 | 65,536 |
| marqadventurer | Y | 1,310,720 | 32,768 |
| marqathlete | Y | 1,310,720 | 32,768 |
| marqaviator | Y | 1,310,720 | 32,768 |
| marqcaptain | Y | 1,310,720 | 32,768 |
| marqcommander | Y | 1,310,720 | 32,768 |
| marqdriver | Y | 1,310,720 | 32,768 |
| marqexpedition | Y | 1,310,720 | 32,768 |
| marqgolfer | Y | 1,310,720 | 32,768 |
| montana7xx | Y | 2,359,296 | |
| oregon7xx | N | 2,359,296 | |
| rino7xx | N | 2,359,296 | |
| system8preview | N | 786,432 | 65,536 |
| venu | Y | 1,048,576 | |
| venu2 | Y | 786,432 | 65,536 |
| venu2plus | Y | 786,432 | 65,536 |
| venu2s | Y | 786,432 | 65,536 |
| venu3 | Y | 786,432 | 65,536 |
| venu3s | Y | 786,432 | 65,536 |
| venu441mm | Y | 786,432 | 65,536 |
| venu445mm | Y | 786,432 | 65,536 |
| venud | Y | 1,048,576 | |
| venusq | Y | 131,072 | |
| venusq2 | Y | 786,432 | 65,536 |
| venusq2m | Y | 786,432 | 65,536 |
| venusqm | Y | 1,048,576 | |
| venux1 | Y | 786,432 | 65,536 |
| vivoactive | N | 65,536 | |
| vivoactive3 | Y | 131,072 | |
| vivoactive3d | N | 131,072 | |
| vivoactive3m | Y | 1,048,576 | |
| vivoactive3mlte | Y | 1,048,576 | |
| vivoactive4 | Y | 1,048,576 | |
| vivoactive4s | Y | 1,048,576 | |
| vivoactive5 | Y | 786,432 | 65,536 |
| vivoactive6 | Y | 786,432 | 65,536 |
| vivoactive_hr | N | 131,072 | |
| vivolife | N | | |