Crate fdomain_uart_driver_lib 

Target-side FDomain UART driver daemon for Fuchsia devices.

This component acts as the target-side transport bridge between a physical or virtual serial device (/dev/class/serial) and the Remote Control Service (fuchsia.developer.remotecontrol.connector.Connector).

Architecture

1. Boot Argument Check: Checks fuchsia.boot.Arguments for dev.fdomain.uart (defaults to disabled; opt-in via dev.fdomain.uart=true) and dev.fdomain.uart.baud (defaults to 1000000).
2. Device Discovery: Scans /dev/class/serial, preferring Class::Generic ports over Class::Console ports, and configures 8N1 at the target baud rate.
3. Handshake: Runs TargetHandshake supporting ProtocolId::ResendSP (Go-Back-N sliding-window framing) and preserves any trailing bytes read past the handshake frame.
4. Bridge Tasks: Spawns four concurrent tasks (writer_task, receiver_task, sender_task, and coordinator_task) that multiplex FDomain channels over UART frames and connect each channel to RCS via fdomain_toolbox_socket.

Re-exports

pub use error::Result;

Modules

coordinator

Multiplexed FDomain channel coordinator and RCS socket bridge tasks.

error

Error types for the target-side FDomain UART driver.

receiver

Target-side ResendSP frame receiver task and session validation.

sender

Target-side ResendSP Go-Back-N sender task and retransmission management.

serial

Low-level serial I/O traits, device discovery, handshake, frame reader, and writer task.

Functions

run_driver

Runs the target-side FDomain UART driver daemon.