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Rustmix X4 Firmware v1.1.0 — Hindi and Gujarati EPUB Support

Rustmix X4 Firmware v1.1.0 — Hindi and Gujarati EPUB Support Latest
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@aimindseye aimindseye released this 10 Jun 18:14
v1.1.0
6bf2e84

Rustmix X4 Firmware v1.1.0

This release adds host-prepared Indic EPUB rendering for Hindi, Sanskrit, and Gujarati books on the Xteink X4.

Highlights

  • Adds Devanagari EPUB rendering for Hindi and Sanskrit content.
  • Adds Gujarati EPUB rendering, including mixed-script books.
  • Performs complex Indic shaping on a computer so the constrained X4 firmware does not need to run a large shaping engine on-device.
  • Uses page-local FAT 8.3-safe cache assets under /FCACHE/<BOOKID>.
  • Splits dense shaped pages before firmware-safe glyph, VRUN-byte, or page-font limits are exceeded.
  • Cleans macOS AppleDouble ._* files and .DS_Store metadata before cache validation.
  • Preserves existing Reader features, TXT/EPUB browsing, bookmarks, settings, Wi-Fi Transfer, and the accepted X4/CrossPoint-compatible partition layout.

Validated books

  • Garud Purana EPUB with Hindi and Sanskrit Devanagari text.
  • Srimad Bhagavat Mahapuran Volume 1 EPUB with Hindi Devanagari text.
  • Gujarati Valmiki Ramayana EPUB.

Preparing an Indic EPUB cache

Use static Noto TTF files and place the generated cache at the SD-card root:

python3 tools/font_prepare/prepare_book.py epub \
  --book "/path/to/book.epub" \
  --device-path GARUDPUR.EPU \
  --latin-font "/path/to/NotoSans-Regular.ttf" \
  --devanagari-font "/path/to/NotoSansDevanagari-Medium.ttf" \
  --out "/Volumes/<SDCARD>/FCACHE" \
  --clean

Add --gujarati-font "/path/to/NotoSansGujarati-Regular.ttf" for Gujarati books.

See README.md, USERGUIDE.md, and SCREENSHOTS.md for the complete workflow and physically validated device screenshots.

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v1.0.0

v1.0.0

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@aimindseye aimindseye released this 23 May 00:35
v1.0.0
e403162

Rustmix X4 Firmware v1.0.0

First public release of Rustmix X4 firmware for the Xteink X4 e-ink device.

Rustmix is a Rust-based reference firmware intended for Xteink X4 users and developers who want to experiment with reader firmware, SD-card apps, custom fonts, flashcards, dictionary data, and sleep images.

Highlights

  • Rust firmware for Xteink X4 / ESP32-C3.
  • Standard Xteink X4-compatible partition layout.
  • First-boot SD provisioning under /RUSTMIX.
  • Wi-Fi Transfer support for managing SD card files.
  • Reader, Library, Recent, Settings, Tools, Productivity, and Games sections.
  • Lua app architecture for SD-loaded apps.
  • Custom font support.
  • Dictionary support with shard files.
  • Flashcards support with text and image-based topics.
  • Random sleep image support from /RUSTMIX/SLEEP.
  • Release firmware file: rustfirmware.bin.

First install

Use the included firmware file:

scripts/flash_x4_release_bin.sh dist/rustmix-x4/rustfirmware.bin /dev/ttyACM0
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