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| 06:07.54 | *** topic/#card10badge is Logix (Wiki): https://card10.badge.events.ccc.de/ git: https://git.card10.badge.events.ccc.de/card10 % current version: https://card10.badge.events.ccc.de/en/firmwareupdate/ % Display: https://www.aliexpress.com/item/4000018872259.html |
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| 12:03.24 | schneider | rahix[m]: how do i get to a TCB to be used with task_backtrace ? |
| 12:07.57 | rahix[m] | `task_backtrace <task-id-global>` should do the trick where the id is from the "ID Global" column here: https://firmware.card10.badge.events.ccc.de/overview.html#epicardium |
| 12:11.15 | rahix[m] | Might be very buggy when FPU was active |
| 12:19.19 | schneider | my current state is in schneider/fat-locking |
| 12:19.33 | schneider | sometimes i still get" |
| 12:19.35 | schneider | [ 612] card10.cfg: seek2 failed (-9), aborting |
| 12:20.17 | schneider | -9 should be "bad fd", but im not sure why and especially why only sometimes |
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| 13:21.52 | Stormwind_mobile | How complicated would things be if someone made a "second harmonic" board with a bigger screen? Just a flag in a config and a new parameter in a library, or would that be a big pile of work? |
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| 13:47.11 | schneider | i was wondering about that too |
| 13:47.33 | schneider | i think mainly: mapping the current screen content onto the new display |
| 13:48.01 | schneider | it should not be too hard to make the lcd library support both |
| 13:48.12 | schneider | (but it will consume twice as much memory then) |
| 13:51.33 | Stormwind_mobile | That's one of the unintended consequences I am talking about. |
| 13:52.14 | schneider | it will also consume extra 4 mA of backlight |
| 13:52.19 | Stormwind_mobile | "It should not be too hard..." - famous last words ð |
| 13:54.40 | Stormwind_mobile | Would the memory aspect introduce a bottleneck? |
| 13:55.49 | Stormwind_mobile | The SPI bus also would need more bandwidth and CPU time, unless that is done by DMA |
| 13:56.44 | Stormwind_mobile | Does the firmware make use of the display's "tearing effect" output? |
| 13:57.38 | schneider | no, it does not |
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| 14:09.51 | Stormwind_mobile | I remember there are strange artifacts flickering on the screen sometimes. Might that be the reason behind it? |
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| 14:24.59 | schneider | don't think so |
| 14:25.04 | schneider | don't know what is happening either |
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| 15:02.35 | schneider | rahix[m]: why does 268 efs_get_new(EpicFileSystem *fs, uint32_t *idx, struct FatObject **obj, int *rc) |
| 15:02.49 | schneider | always set idx to 0? |
| 15:03.03 | schneider | looks buggy to me |
| 15:04.10 | schneider | i think we can not have more than one file open at any time atm ;) |
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| 16:56.31 | Stormwind_mobile | schneider: the Tearing output seems to be wired to PMIC_GPIO, but is labeled "display reset" on the inter board connector. |
| 17:14.49 | pippin | in practice, with double buffering - tearing does not tend to be much of a problem on the card10 ; only really visible if one is doing things like rapidly changing the color of the whole display |
| 17:15.58 | pippin | with animations that have coherence between frames; scan-out tearing is not glaring |
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