Crate zmodem2 

ZMODEM file transfer protocol library. Sender and Receiver are caller-driven state machines for sending and receiving files with the ZMODEM protocol. The crate is no_std compatible and heapless.

The caller owns all I/O. The loop is the same for both roles:

1. Create a Sender or Receiver.
2. Call poll() to get the next Action:
   • Action::WriteWire — write the bytes to the transport, then call wire_written(n).
   • Action::ReadFile (sender) — read the requested file bytes and provide them with Sender::submit_file.
   • Action::WriteFile (receiver) — persist the bytes, then call Receiver::file_written.
   • Action::Event — handle a protocol Event.
   • Action::Idle — feed incoming transport bytes with submit_wire(), or call timeout() if none arrive.
3. The sender offers files with Sender::start_file and ends the session with Sender::finish.

Structs

FileInfo

File metadata advertised by the sender.

Position

Byte offset in a ZMODEM file transfer.

Receiver

ZMODEM receiver state machine.

Sender

ZMODEM sender state machine.

Enums

Action

The next action the caller must perform, returned by Sender::poll and Receiver::poll.

Error

Top-level error type.

Event

Protocol-level event surfaced through Action::Event.