A fork of https://github.com/crosspoint-reader/crosspoint-reader
chore: Clarify X3 RTC in SCOPE.md (#1687)
## Summary
Clarify that X3 device has a reliable RTC chip, so clock feature can be
in-scope depending on device.
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### AI Usage
While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.
Did you use AI tools to help write this code? _**NO**_
authored by
Zach Nelson
and committed by
GitHub
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SCOPE.md
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SCOPE.md
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* **Language Support:** E.g. Support for multiple languages both in the reader and in the interfaces.
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* **Reference Tools:** E.g. Local dictionary lookup. Providing quick, offline definitions to enhance comprehension
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without breaking focus.
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* **Clock Display (device dependent):**
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| Device | Scope |
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| -- | -- |
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| X3 | The X3 uses a dedicated DS3231 RTC, which maintains accurate time across sleep cycles and can be treated as a reliable wall clock. |
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| X4 | The X4 relies on the ESP32-C3's internal RTC, which drifts significantly during deep sleep. NTP sync could correct this, with an appropriate user experience around connecting to the internet on wake or on demand. This causes some tension with the **Active Connectivity** section below, so please open a discussion about this UX if it's a feature you would find useful. |
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### Out-of-Scope
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### In-scope — Technically Unsupported
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*These features align with CrossPoint's goals but are impractical on the current hardware or produce poor UX.*
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* **Clock Display:** The ESP32-C3's RTC drifts significantly during deep sleep; making the clock untrustworthy after any sleep cycle. NTP sync could help, but CrossPoint doesn't connect to the internet on every boot.
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* **PDF Rendering:** PDFs are fixed-layout documents, so rendering them requires displaying pages as images rather than reflowable text — resulting in constant panning and zooming that makes for a poor reading experience on e-ink.
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