OpenEPaperLink

mirror of https://github.com/OpenEPaperLink/OpenEPaperLink.git synced 2026-03-21 00:04:28 +01:00

Table of Contents

v0028

Fixed a bug where an interrupted transfer wouldn't be continued properly
Improved compatibility with ESP32-S2/TagAP-based accesspoints
Fixed handling for large compressed files; Too large files could overflow a buffer during rendering
Added a few commands
Added 'deep sleep' command, blanking the screen and forcing the tag to sleep

Greatly reduced EPD booster, resulting in much less EPD power consumption
Will now work down to approximately 2 volts (if your batteries would support any currents at that low a voltage)
No more red-bleed in large areas with black/red

Moved various parts to C++, most parts compiled with -O3
Improved stability, watchdog now runs properly
Improved icons for no-RF and low battery
Common codebase for protocol and drawing text and icons with M3 firmware
Moved 'settings' and 'profile' to the back of the flash space, to allow universal firmwares in the future
Support for much larger firmware's in the future
Software version now correctly reported
Sending Full DataAvailReq packets works reliably
MD5 validation for both firmware and images
Firmware magic number is validated when doing OTA updates to ensure the correct file is flashed
Simplified EPD driver for UC8159
Reduced power consumption
Introduces OEPLfs in order to reduce codesize and keep data out of RAM
Introduces EPD-driver abstraction layer
Uses compression on images and icons
This version supports compression of the transferred image data, when the AP supports it
- Uses zlib for compression, with a fixed window(dictionary) size of 8192
- Reduces unnecessary block transfers

Due to larger size, this version cannot be flashed from previous versions! You'll need to flash to v0026 first!
Waking the tag up from NFC will crash and reboot the tag