flutter_ymodem_lib 0.0.1

A pure Dart implementation of the YModem file transfer protocol for Flutter. Works on Android, iOS, Windows, macOS and Linux without any native code, ideal for BLE OTA firmware upgrades (e.g. together [...]

0.0.1

• Initial release.
• Pure Dart YModem sender engine ported from YModemlib_Android:
  • hello handshake, package 0 (file name / size / MD5), 128 (SOH) and 1024 (STX) data packages, EOT and final package handshake, MD5_OK / MD5_ERR support;
  • CRC-16/XMODEM (big-endian in the frame);
  • automatic retransmission on NAK / timeout, CAN handling, stop() cancellation;
  • split BLE notification responses (ACK + C, split MD5_OK).
• Streaming YModemSource with YModemFileSource and YModemBytesSource implementations.
• Registered as a Dart-only plugin for Android, iOS, Windows, macOS and Linux (zero native code).
• Full example app for all five platforms with flutter_blue_plus (2.3.12, Windows backend flutter_blue_plus_winrt 0.0.20), file picking, MTU negotiation, chunked writes and a live protocol log.
• Unit tests: CRC vectors, package layout, end-to-end transfers against a fake receiver, retries, timeout and cancellation.