mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2026-03-15 07:26:44 +08:00
1339 lines
45 KiB
Rust
1339 lines
45 KiB
Rust
//! CH9329 Serial HID Controller backend
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//!
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//! CH9329 is a USB HID chip controlled via UART from WCH (沁恒).
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//! It supports keyboard, mouse (absolute + relative), and custom HID device emulation.
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//!
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//! ## Protocol Format
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//! ```text
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//! ┌──────┬──────┬──────┬────────┬──────────────┬──────────┐
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//! │Header│ ADDR │ CMD │ LEN │ DATA │ SUM │
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//! ├──────┼──────┼──────┼────────┼──────────────┼──────────┤
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//! │57 AB │ 00 │ xx │ N │ N bytes │Checksum │
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//! └──────┴──────┴──────┴────────┴──────────────┴──────────┘
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//! ```
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//!
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//! Checksum: Sum of ALL bytes including header (modulo 256)
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//!
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//! ## Reference
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//! Based on WCH CH9329 Serial Communication Protocol V1.0
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use async_trait::async_trait;
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use parking_lot::{Mutex, RwLock};
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use serde::{Deserialize, Serialize};
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use std::io::{Read, Write};
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use std::sync::atomic::{AtomicBool, AtomicU16, AtomicU32, AtomicU8, Ordering};
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use std::time::{Duration, Instant};
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use tracing::{debug, info, trace, warn};
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use super::backend::HidBackend;
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use super::keymap;
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use super::types::{KeyEventType, KeyboardEvent, KeyboardReport, MouseEvent, MouseEventType};
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use crate::error::{AppError, Result};
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// ============================================================================
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// Constants and Command Codes
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// ============================================================================
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/// CH9329 packet header
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const PACKET_HEADER: [u8; 2] = [0x57, 0xAB];
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/// Default address (accepts any address)
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const DEFAULT_ADDR: u8 = 0x00;
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/// Broadcast address (no response required)
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#[allow(dead_code)]
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const BROADCAST_ADDR: u8 = 0xFF;
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/// Default baud rate for CH9329
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pub const DEFAULT_BAUD_RATE: u32 = 9600;
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/// Response timeout in milliseconds
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const RESPONSE_TIMEOUT_MS: u64 = 500;
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/// Maximum data length in a packet
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const MAX_DATA_LEN: usize = 64;
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/// CH9329 absolute mouse resolution
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const CH9329_MOUSE_RESOLUTION: u32 = 4096;
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/// Default retry count for failed operations
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const DEFAULT_RETRY_COUNT: u32 = 3;
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/// Reset wait time in milliseconds (after software reset)
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const RESET_WAIT_MS: u64 = 2000;
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/// Cooldown between retries in milliseconds
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const RETRY_COOLDOWN_MS: u64 = 100;
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/// CH9329 command codes
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#[allow(dead_code)]
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pub mod cmd {
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/// Get chip version, USB status, and LED status
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pub const GET_INFO: u8 = 0x01;
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/// Send standard keyboard data (8 bytes)
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pub const SEND_KB_GENERAL_DATA: u8 = 0x02;
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/// Send multimedia keyboard data
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pub const SEND_KB_MEDIA_DATA: u8 = 0x03;
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/// Send absolute mouse data
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pub const SEND_MS_ABS_DATA: u8 = 0x04;
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/// Send relative mouse data
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pub const SEND_MS_REL_DATA: u8 = 0x05;
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/// Send custom HID data
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pub const SEND_MY_HID_DATA: u8 = 0x06;
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/// Read custom HID data (sent by chip automatically)
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pub const READ_MY_HID_DATA: u8 = 0x87;
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/// Get parameter configuration
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pub const GET_PARA_CFG: u8 = 0x08;
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/// Set parameter configuration
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pub const SET_PARA_CFG: u8 = 0x09;
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/// Get USB string descriptor
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pub const GET_USB_STRING: u8 = 0x0A;
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/// Set USB string descriptor
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pub const SET_USB_STRING: u8 = 0x0B;
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/// Restore factory default configuration
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pub const SET_DEFAULT_CFG: u8 = 0x0C;
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/// Software reset
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pub const RESET: u8 = 0x0F;
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}
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/// Response command mask (success = cmd | 0x80, error = cmd | 0xC0)
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#[allow(dead_code)]
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const RESPONSE_SUCCESS_MASK: u8 = 0x80;
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const RESPONSE_ERROR_MASK: u8 = 0xC0;
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/// CH9329 error codes
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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#[repr(u8)]
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pub enum Ch9329Error {
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/// Command executed successfully
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Success = 0x00,
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/// Serial receive timeout
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Timeout = 0xE1,
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/// Invalid packet header
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InvalidHeader = 0xE2,
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/// Invalid command code
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InvalidCommand = 0xE3,
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/// Checksum mismatch
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ChecksumError = 0xE4,
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/// Parameter error
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ParameterError = 0xE5,
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/// Execution failed
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OperationFailed = 0xE6,
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}
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impl From<u8> for Ch9329Error {
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fn from(code: u8) -> Self {
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match code {
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0x00 => Ch9329Error::Success,
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0xE1 => Ch9329Error::Timeout,
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0xE2 => Ch9329Error::InvalidHeader,
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0xE3 => Ch9329Error::InvalidCommand,
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0xE4 => Ch9329Error::ChecksumError,
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0xE5 => Ch9329Error::ParameterError,
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0xE6 => Ch9329Error::OperationFailed,
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_ => Ch9329Error::OperationFailed,
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}
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}
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}
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impl std::fmt::Display for Ch9329Error {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Ch9329Error::Success => write!(f, "Success"),
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Ch9329Error::Timeout => write!(f, "Serial receive timeout"),
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Ch9329Error::InvalidHeader => write!(f, "Invalid packet header"),
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Ch9329Error::InvalidCommand => write!(f, "Invalid command code"),
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Ch9329Error::ChecksumError => write!(f, "Checksum mismatch"),
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Ch9329Error::ParameterError => write!(f, "Parameter error"),
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Ch9329Error::OperationFailed => write!(f, "Operation failed"),
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}
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}
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}
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// ============================================================================
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// Chip Information
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// ============================================================================
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/// CH9329 chip information
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#[derive(Debug, Clone, Default, Serialize, Deserialize)]
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pub struct ChipInfo {
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/// Chip version (e.g., "V1.0", "V1.1")
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pub version: String,
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/// Raw version byte
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pub version_raw: u8,
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/// USB connection status
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pub usb_connected: bool,
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/// Num Lock LED state
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pub num_lock: bool,
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/// Caps Lock LED state
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pub caps_lock: bool,
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/// Scroll Lock LED state
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pub scroll_lock: bool,
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}
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impl ChipInfo {
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/// Parse chip info from response data (8 bytes)
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pub fn from_response(data: &[u8]) -> Option<Self> {
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if data.len() < 8 {
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return None;
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}
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let version_raw = data[0];
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let version = format!("V{}.{}", version_raw >> 4, version_raw & 0x0F);
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let usb_connected = data[1] == 0x01;
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let led_status = data[2];
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Some(Self {
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version,
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version_raw,
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usb_connected,
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num_lock: (led_status & 0x01) != 0,
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caps_lock: (led_status & 0x02) != 0,
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scroll_lock: (led_status & 0x04) != 0,
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})
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}
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}
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/// Keyboard LED status
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#[derive(Debug, Clone, Copy, Default, Serialize, Deserialize)]
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pub struct LedStatus {
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pub num_lock: bool,
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pub caps_lock: bool,
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pub scroll_lock: bool,
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}
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impl From<u8> for LedStatus {
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fn from(byte: u8) -> Self {
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Self {
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num_lock: (byte & 0x01) != 0,
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caps_lock: (byte & 0x02) != 0,
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scroll_lock: (byte & 0x04) != 0,
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}
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}
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}
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// ============================================================================
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// Configuration
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// ============================================================================
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/// CH9329 work mode
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
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#[repr(u8)]
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pub enum WorkMode {
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/// Mode 0: Standard USB Keyboard + Mouse (default)
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KeyboardMouse = 0x00,
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/// Mode 1: Standard USB Keyboard only
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KeyboardOnly = 0x01,
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/// Mode 2: Standard USB Mouse only
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MouseOnly = 0x02,
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/// Mode 3: Custom HID device
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CustomHid = 0x03,
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}
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impl Default for WorkMode {
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fn default() -> Self {
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Self::KeyboardMouse
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}
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}
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/// CH9329 serial communication mode
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
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#[repr(u8)]
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pub enum SerialMode {
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/// Mode 0: Protocol transmission mode (default)
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Protocol = 0x00,
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/// Mode 1: ASCII mode
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Ascii = 0x01,
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/// Mode 2: Transparent mode
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Transparent = 0x02,
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}
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impl Default for SerialMode {
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fn default() -> Self {
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Self::Protocol
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}
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}
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/// CH9329 configuration parameters
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct Ch9329Config {
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/// Work mode
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pub work_mode: WorkMode,
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/// Serial communication mode
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pub serial_mode: SerialMode,
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/// Device address (0x00-0xFE, 0xFF = broadcast)
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pub address: u8,
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/// Baud rate
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pub baud_rate: u32,
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/// USB VID
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pub vid: u16,
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/// USB PID
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pub pid: u16,
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}
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impl Default for Ch9329Config {
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fn default() -> Self {
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Self {
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work_mode: WorkMode::KeyboardMouse,
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serial_mode: SerialMode::Protocol,
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address: 0x00,
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baud_rate: 9600,
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vid: 0x1A86,
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pid: 0xE129,
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}
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}
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}
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// ============================================================================
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// Response Parsing
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// ============================================================================
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/// Parsed response from CH9329
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#[derive(Debug)]
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pub struct Response {
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/// Address byte
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pub address: u8,
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/// Command code (with response bits)
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pub cmd: u8,
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/// Data payload
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pub data: Vec<u8>,
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/// Whether this is an error response
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pub is_error: bool,
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/// Error code (if is_error)
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pub error_code: Option<Ch9329Error>,
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}
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impl Response {
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/// Parse a response from raw bytes
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pub fn parse(bytes: &[u8]) -> Option<Self> {
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// Minimum: Header(2) + Addr(1) + Cmd(1) + Len(1) + Sum(1) = 6
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if bytes.len() < 6 {
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return None;
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}
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// Check header
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if bytes[0] != PACKET_HEADER[0] || bytes[1] != PACKET_HEADER[1] {
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return None;
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}
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let address = bytes[2];
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let cmd = bytes[3];
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let len = bytes[4] as usize;
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// Check if we have enough bytes
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if bytes.len() < 5 + len + 1 {
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return None;
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}
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// Verify checksum
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let expected_checksum = bytes[5 + len];
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let calculated_checksum = bytes[..5 + len]
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.iter()
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.fold(0u8, |acc, &x| acc.wrapping_add(x));
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if expected_checksum != calculated_checksum {
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warn!(
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"CH9329 checksum mismatch: expected {:02X}, got {:02X}",
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expected_checksum, calculated_checksum
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);
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return None;
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}
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let data = bytes[5..5 + len].to_vec();
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let is_error = (cmd & RESPONSE_ERROR_MASK) == RESPONSE_ERROR_MASK;
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let error_code = if is_error && !data.is_empty() {
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Some(Ch9329Error::from(data[0]))
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} else {
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None
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};
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Some(Self {
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address,
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cmd,
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data,
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is_error,
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error_code,
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})
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}
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/// Check if the response indicates success
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pub fn is_success(&self) -> bool {
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!self.is_error && (self.data.is_empty() || self.data[0] == Ch9329Error::Success as u8)
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}
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}
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/// Maximum packet size (header 2 + addr 1 + cmd 1 + len 1 + data 64 + checksum 1 = 70)
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const MAX_PACKET_SIZE: usize = 70;
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// ============================================================================
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// CH9329 Backend Implementation
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// ============================================================================
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/// CH9329 HID backend
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pub struct Ch9329Backend {
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/// Serial port path
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port_path: String,
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/// Baud rate
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baud_rate: u32,
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/// Serial port handle
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port: Mutex<Option<Box<dyn serialport::SerialPort>>>,
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/// Current keyboard state
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keyboard_state: Mutex<KeyboardReport>,
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/// Current mouse button state
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mouse_buttons: AtomicU8,
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/// Screen width for absolute mouse coordinate conversion
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screen_width: u32,
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/// Screen height for absolute mouse coordinate conversion
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screen_height: u32,
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/// Cached chip information
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chip_info: RwLock<Option<ChipInfo>>,
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/// LED status cache
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led_status: RwLock<LedStatus>,
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/// Device address (default 0x00)
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address: u8,
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/// Last absolute mouse X position (CH9329 coordinate: 0-4095)
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last_abs_x: AtomicU16,
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/// Last absolute mouse Y position (CH9329 coordinate: 0-4095)
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last_abs_y: AtomicU16,
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/// Whether relative mouse mode is active (set by incoming events)
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relative_mouse_active: AtomicBool,
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/// Consecutive error count
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error_count: AtomicU32,
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/// Whether a reset is in progress
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reset_in_progress: AtomicBool,
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/// Last successful communication time
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last_success: Mutex<Option<Instant>>,
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/// Maximum retry count for failed operations
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max_retries: u32,
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}
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impl Ch9329Backend {
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/// Create a new CH9329 backend with default baud rate (9600)
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pub fn new(port_path: &str) -> Result<Self> {
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Self::with_baud_rate(port_path, DEFAULT_BAUD_RATE)
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}
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/// Create a new CH9329 backend with custom baud rate
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pub fn with_baud_rate(port_path: &str, baud_rate: u32) -> Result<Self> {
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Ok(Self {
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port_path: port_path.to_string(),
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baud_rate,
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port: Mutex::new(None),
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keyboard_state: Mutex::new(KeyboardReport::default()),
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mouse_buttons: AtomicU8::new(0),
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screen_width: 1920,
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screen_height: 1080,
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chip_info: RwLock::new(None),
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led_status: RwLock::new(LedStatus::default()),
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address: DEFAULT_ADDR,
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last_abs_x: AtomicU16::new(0),
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last_abs_y: AtomicU16::new(0),
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relative_mouse_active: AtomicBool::new(false),
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error_count: AtomicU32::new(0),
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reset_in_progress: AtomicBool::new(false),
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last_success: Mutex::new(None),
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max_retries: DEFAULT_RETRY_COUNT,
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})
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}
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/// Check if the serial port device file exists
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pub fn check_port_exists(&self) -> bool {
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std::path::Path::new(&self.port_path).exists()
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}
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/// Get the serial port path
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pub fn port_path(&self) -> &str {
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&self.port_path
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}
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/// Check if the port is currently open
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pub fn is_port_open(&self) -> bool {
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self.port.lock().is_some()
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}
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/// Convert serialport error to HidError
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fn serial_error_to_hid_error(e: serialport::Error, operation: &str) -> AppError {
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let error_code = match e.kind() {
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serialport::ErrorKind::NoDevice => "port_not_found",
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serialport::ErrorKind::InvalidInput => "invalid_config",
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serialport::ErrorKind::Io(_) => "io_error",
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_ => "serial_error",
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};
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AppError::HidError {
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backend: "ch9329".to_string(),
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reason: format!("{}: {}", operation, e),
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error_code: error_code.to_string(),
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}
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}
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/// Try to reconnect to the serial port
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///
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/// This method is called when the device is detected as lost.
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/// It will attempt to reopen the port and verify the CH9329 is responding.
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pub fn try_reconnect(&self) -> Result<()> {
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// First check if device file exists
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if !self.check_port_exists() {
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return Err(AppError::HidError {
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backend: "ch9329".to_string(),
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reason: format!("Serial port {} not found", self.port_path),
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error_code: "port_not_found".to_string(),
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});
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}
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// Close existing port if any
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*self.port.lock() = None;
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// Try to open the port
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let port = serialport::new(&self.port_path, self.baud_rate)
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.timeout(Duration::from_millis(RESPONSE_TIMEOUT_MS))
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.open()
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.map_err(|e| Self::serial_error_to_hid_error(e, "Failed to open serial port"))?;
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*self.port.lock() = Some(port);
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info!(
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"CH9329 serial port reopened: {} @ {} baud",
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self.port_path, self.baud_rate
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);
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// Verify connection with GET_INFO command
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self.query_chip_info().map_err(|e| {
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// Close the port on failure
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*self.port.lock() = None;
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AppError::HidError {
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backend: "ch9329".to_string(),
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reason: format!("CH9329 not responding after reconnect: {}", e),
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error_code: "no_response".to_string(),
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}
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})?;
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info!("CH9329 successfully reconnected");
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Ok(())
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}
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/// Calculate checksum for CH9329 packet (sum of ALL bytes including header)
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#[inline]
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fn calculate_checksum(data: &[u8]) -> u8 {
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data.iter().fold(0u8, |acc, &x| acc.wrapping_add(x))
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}
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|
|
/// Build a CH9329 packet into a stack-allocated buffer
|
|
///
|
|
/// Packet format: `[Header 0x57 0xAB] [Address] [Command] [Length] [Data] [Checksum]`
|
|
/// Returns the packet buffer and the actual length
|
|
#[inline]
|
|
fn build_packet_buf(&self, cmd: u8, data: &[u8]) -> ([u8; MAX_PACKET_SIZE], usize) {
|
|
debug_assert!(
|
|
data.len() <= MAX_DATA_LEN,
|
|
"Data too long for CH9329 packet"
|
|
);
|
|
|
|
let len = data.len() as u8;
|
|
let packet_len = 6 + data.len();
|
|
let mut packet = [0u8; MAX_PACKET_SIZE];
|
|
|
|
// Header (2 bytes)
|
|
packet[0] = PACKET_HEADER[0];
|
|
packet[1] = PACKET_HEADER[1];
|
|
// Address (1 byte)
|
|
packet[2] = self.address;
|
|
// Command (1 byte)
|
|
packet[3] = cmd;
|
|
// Length (1 byte) - data length only
|
|
packet[4] = len;
|
|
// Data (N bytes)
|
|
packet[5..5 + data.len()].copy_from_slice(data);
|
|
// Checksum (1 byte) - sum of ALL bytes including header
|
|
let checksum = Self::calculate_checksum(&packet[..5 + data.len()]);
|
|
packet[5 + data.len()] = checksum;
|
|
|
|
(packet, packet_len)
|
|
}
|
|
|
|
/// Build a CH9329 packet (legacy Vec version for compatibility)
|
|
fn build_packet(&self, cmd: u8, data: &[u8]) -> Vec<u8> {
|
|
let (buf, len) = self.build_packet_buf(cmd, data);
|
|
buf[..len].to_vec()
|
|
}
|
|
|
|
/// Send a packet to the CH9329 (internal, no retry)
|
|
fn send_packet_raw(&self, cmd: u8, data: &[u8]) -> Result<()> {
|
|
let (packet, packet_len) = self.build_packet_buf(cmd, data);
|
|
|
|
let mut port_guard = self.port.lock();
|
|
if let Some(ref mut port) = *port_guard {
|
|
port.write_all(&packet[..packet_len])
|
|
.map_err(|e| AppError::HidError {
|
|
backend: "ch9329".to_string(),
|
|
reason: format!("Failed to write to CH9329: {}", e),
|
|
error_code: "write_failed".to_string(),
|
|
})?;
|
|
// Only log mouse button events at debug level to avoid flooding
|
|
if cmd == cmd::SEND_MS_ABS_DATA && data.len() >= 2 && data[1] != 0 {
|
|
debug!(
|
|
"CH9329 TX [cmd=0x{:02X}]: {:02X?}",
|
|
cmd,
|
|
&packet[..packet_len]
|
|
);
|
|
}
|
|
Ok(())
|
|
} else {
|
|
Err(AppError::HidError {
|
|
backend: "ch9329".to_string(),
|
|
reason: "CH9329 port not opened".to_string(),
|
|
error_code: "port_not_opened".to_string(),
|
|
})
|
|
}
|
|
}
|
|
|
|
/// Send a packet to the CH9329 with automatic retry and reset on failure
|
|
fn send_packet(&self, cmd: u8, data: &[u8]) -> Result<()> {
|
|
// Don't retry reset commands to avoid infinite loops
|
|
if cmd == cmd::RESET {
|
|
return self.send_packet_raw(cmd, data);
|
|
}
|
|
|
|
let mut last_error = None;
|
|
|
|
for attempt in 0..self.max_retries {
|
|
match self.send_packet_raw(cmd, data) {
|
|
Ok(()) => {
|
|
// Success - reset error count and update last success time
|
|
self.error_count.store(0, Ordering::Relaxed);
|
|
*self.last_success.lock() = Some(Instant::now());
|
|
return Ok(());
|
|
}
|
|
Err(e) => {
|
|
let count = self.error_count.fetch_add(1, Ordering::Relaxed) + 1;
|
|
last_error = Some(e);
|
|
|
|
if attempt + 1 < self.max_retries {
|
|
debug!(
|
|
"CH9329 send failed (attempt {}/{}), error count: {}",
|
|
attempt + 1,
|
|
self.max_retries,
|
|
count
|
|
);
|
|
|
|
// Try reset if we have multiple consecutive errors
|
|
if count >= 2 && !self.reset_in_progress.load(Ordering::Relaxed) {
|
|
if let Err(reset_err) = self.try_reset_and_recover() {
|
|
warn!("CH9329 reset failed: {}", reset_err);
|
|
}
|
|
} else {
|
|
// Brief cooldown before retry
|
|
std::thread::sleep(Duration::from_millis(RETRY_COOLDOWN_MS));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// All retries exhausted
|
|
Err(last_error.unwrap_or_else(|| AppError::HidError {
|
|
backend: "ch9329".to_string(),
|
|
reason: "Send failed after all retries".to_string(),
|
|
error_code: "max_retries_exceeded".to_string(),
|
|
}))
|
|
}
|
|
|
|
/// Try to reset the CH9329 chip and recover communication
|
|
///
|
|
/// This method:
|
|
/// 1. Sends RESET command (0x00 0x0F 0x00)
|
|
/// 2. Waits for chip to reboot (2 seconds)
|
|
/// 3. Verifies communication with GET_INFO
|
|
fn try_reset_and_recover(&self) -> Result<()> {
|
|
// Prevent concurrent resets
|
|
if self.reset_in_progress.swap(true, Ordering::SeqCst) {
|
|
debug!("CH9329 reset already in progress, skipping");
|
|
return Ok(());
|
|
}
|
|
|
|
info!("CH9329: Attempting automatic reset and recovery");
|
|
|
|
let result = (|| {
|
|
// Send reset command directly (bypass retry logic)
|
|
self.send_packet_raw(cmd::RESET, &[])?;
|
|
|
|
// Wait for chip to reset (2 seconds as per reference implementation)
|
|
info!("CH9329: Waiting {}ms for chip to reset...", RESET_WAIT_MS);
|
|
std::thread::sleep(Duration::from_millis(RESET_WAIT_MS));
|
|
|
|
// Verify communication
|
|
match self.query_chip_info() {
|
|
Ok(info) => {
|
|
info!(
|
|
"CH9329: Recovery successful, chip version: {}, USB: {}",
|
|
info.version,
|
|
if info.usb_connected {
|
|
"connected"
|
|
} else {
|
|
"disconnected"
|
|
}
|
|
);
|
|
// Reset error count on successful recovery
|
|
self.error_count.store(0, Ordering::Relaxed);
|
|
*self.last_success.lock() = Some(Instant::now());
|
|
Ok(())
|
|
}
|
|
Err(e) => {
|
|
warn!("CH9329: Recovery verification failed: {}", e);
|
|
Err(e)
|
|
}
|
|
}
|
|
})();
|
|
|
|
self.reset_in_progress.store(false, Ordering::SeqCst);
|
|
result
|
|
}
|
|
|
|
/// Get current error count
|
|
pub fn error_count(&self) -> u32 {
|
|
self.error_count.load(Ordering::Relaxed)
|
|
}
|
|
|
|
/// Check if device communication is healthy (recent successful operation)
|
|
pub fn is_healthy(&self) -> bool {
|
|
if let Some(last) = *self.last_success.lock() {
|
|
// Consider healthy if last success was within 30 seconds
|
|
last.elapsed() < Duration::from_secs(30)
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
|
|
/// Send a packet and read response
|
|
fn send_and_receive(&self, cmd: u8, data: &[u8]) -> Result<Response> {
|
|
let packet = self.build_packet(cmd, data);
|
|
|
|
let mut port_guard = self.port.lock();
|
|
if let Some(ref mut port) = *port_guard {
|
|
// Send packet
|
|
port.write_all(&packet)
|
|
.map_err(|e| AppError::Internal(format!("Failed to write to CH9329: {}", e)))?;
|
|
trace!("CH9329 TX: {:02X?}", packet);
|
|
|
|
// Wait for response - use shorter delay for faster response
|
|
// CH9329 typically responds within 5ms
|
|
std::thread::sleep(Duration::from_millis(5));
|
|
|
|
// Read response
|
|
let mut response_buf = [0u8; 128];
|
|
match port.read(&mut response_buf) {
|
|
Ok(n) if n > 0 => {
|
|
trace!("CH9329 RX: {:02X?}", &response_buf[..n]);
|
|
if let Some(response) = Response::parse(&response_buf[..n]) {
|
|
if response.is_error {
|
|
if let Some(err) = response.error_code {
|
|
warn!("CH9329 error response: {}", err);
|
|
}
|
|
}
|
|
return Ok(response);
|
|
}
|
|
Err(AppError::Internal("Invalid CH9329 response".to_string()))
|
|
}
|
|
Ok(_) => Err(AppError::Internal("No response from CH9329".to_string())),
|
|
Err(e) if e.kind() == std::io::ErrorKind::TimedOut => {
|
|
// Timeout is acceptable for some commands
|
|
debug!("CH9329 response timeout (may be normal)");
|
|
Err(AppError::Internal("CH9329 response timeout".to_string()))
|
|
}
|
|
Err(e) => Err(AppError::Internal(format!(
|
|
"Failed to read from CH9329: {}",
|
|
e
|
|
))),
|
|
}
|
|
} else {
|
|
Err(AppError::Internal("CH9329 port not opened".to_string()))
|
|
}
|
|
}
|
|
|
|
// ========================================================================
|
|
// Public API
|
|
// ========================================================================
|
|
|
|
/// Get cached chip information
|
|
pub fn get_chip_info(&self) -> Option<ChipInfo> {
|
|
self.chip_info.read().clone()
|
|
}
|
|
|
|
/// Query and update chip information
|
|
pub fn query_chip_info(&self) -> Result<ChipInfo> {
|
|
let response = self.send_and_receive(cmd::GET_INFO, &[])?;
|
|
|
|
info!(
|
|
"CH9329 GET_INFO response: cmd=0x{:02X}, data={:02X?}, is_error={}",
|
|
response.cmd, response.data, response.is_error
|
|
);
|
|
|
|
if let Some(info) = ChipInfo::from_response(&response.data) {
|
|
// Update cache
|
|
*self.chip_info.write() = Some(info.clone());
|
|
*self.led_status.write() = LedStatus {
|
|
num_lock: info.num_lock,
|
|
caps_lock: info.caps_lock,
|
|
scroll_lock: info.scroll_lock,
|
|
};
|
|
Ok(info)
|
|
} else {
|
|
Err(AppError::Internal("Failed to parse chip info".to_string()))
|
|
}
|
|
}
|
|
|
|
/// Get cached LED status
|
|
pub fn get_led_status(&self) -> LedStatus {
|
|
*self.led_status.read()
|
|
}
|
|
|
|
/// Software reset the chip
|
|
///
|
|
/// Sends reset command and waits for chip to reboot.
|
|
/// Use `try_reset_and_recover` for automatic recovery with verification.
|
|
pub fn software_reset(&self) -> Result<()> {
|
|
info!("CH9329: Sending software reset command");
|
|
self.send_packet_raw(cmd::RESET, &[])?;
|
|
|
|
// Wait for chip to reset (2 seconds as per Python reference)
|
|
info!("CH9329: Waiting {}ms for chip to reset...", RESET_WAIT_MS);
|
|
std::thread::sleep(Duration::from_millis(RESET_WAIT_MS));
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Force reset and verify recovery
|
|
///
|
|
/// Public wrapper for try_reset_and_recover.
|
|
pub fn reset_and_verify(&self) -> Result<()> {
|
|
self.try_reset_and_recover()
|
|
}
|
|
|
|
/// Restore factory default configuration
|
|
pub fn restore_factory_defaults(&self) -> Result<()> {
|
|
info!("CH9329: Restoring factory defaults");
|
|
let response = self.send_and_receive(cmd::SET_DEFAULT_CFG, &[])?;
|
|
|
|
if response.is_success() {
|
|
Ok(())
|
|
} else {
|
|
Err(AppError::Internal(
|
|
"Failed to restore factory defaults".to_string(),
|
|
))
|
|
}
|
|
}
|
|
|
|
// ========================================================================
|
|
// HID Commands
|
|
// ========================================================================
|
|
|
|
/// Send keyboard report via CH9329
|
|
fn send_keyboard_report(&self, report: &KeyboardReport) -> Result<()> {
|
|
// CH9329 keyboard packet: 8 bytes (modifier, reserved, key1-6)
|
|
let data = report.to_bytes();
|
|
self.send_packet(cmd::SEND_KB_GENERAL_DATA, &data)
|
|
}
|
|
|
|
/// Send multimedia keyboard key
|
|
///
|
|
/// For ACPI keys (Power/Sleep/Wake): data = [0x01, acpi_byte]
|
|
/// For other multimedia keys: data = [0x02, byte2, byte3, byte4]
|
|
pub fn send_media_key(&self, data: &[u8]) -> Result<()> {
|
|
if data.len() < 2 || data.len() > 4 {
|
|
return Err(AppError::Internal(
|
|
"Invalid media key data length".to_string(),
|
|
));
|
|
}
|
|
self.send_packet(cmd::SEND_KB_MEDIA_DATA, data)
|
|
}
|
|
|
|
/// Send ACPI key (Power, Sleep, Wake)
|
|
pub fn send_acpi_key(&self, power: bool, sleep: bool, wake: bool) -> Result<()> {
|
|
let mut byte = 0u8;
|
|
if power {
|
|
byte |= 0x01;
|
|
}
|
|
if sleep {
|
|
byte |= 0x02;
|
|
}
|
|
if wake {
|
|
byte |= 0x04;
|
|
}
|
|
self.send_media_key(&[0x01, byte])
|
|
}
|
|
|
|
/// Release all media keys
|
|
pub fn release_media_keys(&self) -> Result<()> {
|
|
self.send_media_key(&[0x02, 0x00, 0x00, 0x00])
|
|
}
|
|
|
|
/// Send relative mouse report via CH9329
|
|
///
|
|
/// Data format: [0x01, buttons, dx, dy, wheel]
|
|
fn send_mouse_relative(&self, buttons: u8, dx: i8, dy: i8, wheel: i8) -> Result<()> {
|
|
let data = [0x01, buttons, dx as u8, dy as u8, wheel as u8];
|
|
self.send_packet(cmd::SEND_MS_REL_DATA, &data)
|
|
}
|
|
|
|
/// Send absolute mouse report via CH9329
|
|
///
|
|
/// Data format: [0x02, buttons, x_lo, x_hi, y_lo, y_hi, wheel]
|
|
/// Coordinate range: 0-4095
|
|
fn send_mouse_absolute(&self, buttons: u8, x: u16, y: u16, wheel: i8) -> Result<()> {
|
|
let data = [
|
|
0x02,
|
|
buttons,
|
|
(x & 0xFF) as u8,
|
|
(x >> 8) as u8,
|
|
(y & 0xFF) as u8,
|
|
(y >> 8) as u8,
|
|
wheel as u8,
|
|
];
|
|
|
|
// Use send_packet which has retry logic built-in
|
|
self.send_packet(cmd::SEND_MS_ABS_DATA, &data)?;
|
|
|
|
trace!("CH9329 mouse: buttons=0x{:02X} pos=({},{})", buttons, x, y);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Send custom HID data
|
|
pub fn send_custom_hid(&self, data: &[u8]) -> Result<()> {
|
|
if data.len() > MAX_DATA_LEN {
|
|
return Err(AppError::Internal("Custom HID data too long".to_string()));
|
|
}
|
|
self.send_packet(cmd::SEND_MY_HID_DATA, data)
|
|
}
|
|
}
|
|
|
|
// ============================================================================
|
|
// HidBackend Trait Implementation
|
|
// ============================================================================
|
|
|
|
#[async_trait]
|
|
impl HidBackend for Ch9329Backend {
|
|
fn name(&self) -> &'static str {
|
|
"CH9329 Serial"
|
|
}
|
|
|
|
async fn init(&self) -> Result<()> {
|
|
// Open serial port
|
|
let port = serialport::new(&self.port_path, self.baud_rate)
|
|
.timeout(Duration::from_millis(RESPONSE_TIMEOUT_MS))
|
|
.open()
|
|
.map_err(|e| {
|
|
AppError::Internal(format!(
|
|
"Failed to open serial port {}: {}",
|
|
self.port_path, e
|
|
))
|
|
})?;
|
|
|
|
*self.port.lock() = Some(port);
|
|
info!(
|
|
"CH9329 serial port opened: {} @ {} baud",
|
|
self.port_path, self.baud_rate
|
|
);
|
|
|
|
// Query chip info to verify connection
|
|
// If this fails, the device is not usable (wrong baud rate, not connected, etc.)
|
|
let info = self.query_chip_info().map_err(|e| {
|
|
// Close port on failure
|
|
*self.port.lock() = None;
|
|
AppError::Internal(format!(
|
|
"CH9329 not responding on {} @ {} baud: {}",
|
|
self.port_path, self.baud_rate, e
|
|
))
|
|
})?;
|
|
|
|
info!(
|
|
"CH9329 chip detected: {}, USB: {}, LEDs: NumLock={}, CapsLock={}, ScrollLock={}",
|
|
info.version,
|
|
if info.usb_connected {
|
|
"connected"
|
|
} else {
|
|
"disconnected"
|
|
},
|
|
info.num_lock,
|
|
info.caps_lock,
|
|
info.scroll_lock
|
|
);
|
|
|
|
// Initialize last success timestamp
|
|
*self.last_success.lock() = Some(Instant::now());
|
|
|
|
Ok(())
|
|
}
|
|
|
|
async fn send_keyboard(&self, event: KeyboardEvent) -> Result<()> {
|
|
// Convert JS keycode to USB HID if needed (skip if already USB HID)
|
|
let usb_key = if event.is_usb_hid {
|
|
event.key
|
|
} else {
|
|
keymap::js_to_usb(event.key).unwrap_or(event.key)
|
|
};
|
|
|
|
// Handle modifier keys separately
|
|
if keymap::is_modifier_key(usb_key) {
|
|
let mut state = self.keyboard_state.lock();
|
|
|
|
if let Some(bit) = keymap::modifier_bit(usb_key) {
|
|
match event.event_type {
|
|
KeyEventType::Down => state.modifiers |= bit,
|
|
KeyEventType::Up => state.modifiers &= !bit,
|
|
}
|
|
}
|
|
|
|
let report = state.clone();
|
|
drop(state);
|
|
|
|
self.send_keyboard_report(&report)?;
|
|
} else {
|
|
let mut state = self.keyboard_state.lock();
|
|
|
|
// Update modifiers from event
|
|
state.modifiers = event.modifiers.to_hid_byte();
|
|
|
|
match event.event_type {
|
|
KeyEventType::Down => {
|
|
state.add_key(usb_key);
|
|
}
|
|
KeyEventType::Up => {
|
|
state.remove_key(usb_key);
|
|
}
|
|
}
|
|
|
|
let report = state.clone();
|
|
drop(state);
|
|
|
|
self.send_keyboard_report(&report)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
async fn send_mouse(&self, event: MouseEvent) -> Result<()> {
|
|
let buttons = self.mouse_buttons.load(Ordering::Relaxed);
|
|
|
|
match event.event_type {
|
|
MouseEventType::Move => {
|
|
// Relative movement - send delta directly without inversion
|
|
self.relative_mouse_active.store(true, Ordering::Relaxed);
|
|
let dx = event.x.clamp(-127, 127) as i8;
|
|
let dy = event.y.clamp(-127, 127) as i8;
|
|
self.send_mouse_relative(buttons, dx, dy, 0)?;
|
|
}
|
|
MouseEventType::MoveAbs => {
|
|
// Absolute movement
|
|
self.relative_mouse_active.store(false, Ordering::Relaxed);
|
|
// Frontend sends 0-32767 (HID standard), CH9329 expects 0-4095
|
|
let x = ((event.x.clamp(0, 32767) as u32) * CH9329_MOUSE_RESOLUTION / 32768) as u16;
|
|
let y = ((event.y.clamp(0, 32767) as u32) * CH9329_MOUSE_RESOLUTION / 32768) as u16;
|
|
// Store last absolute position for click events
|
|
self.last_abs_x.store(x, Ordering::Relaxed);
|
|
self.last_abs_y.store(y, Ordering::Relaxed);
|
|
self.send_mouse_absolute(buttons, x, y, 0)?;
|
|
}
|
|
MouseEventType::Down => {
|
|
if let Some(button) = event.button {
|
|
let bit = button.to_hid_bit();
|
|
let new_buttons = self.mouse_buttons.fetch_or(bit, Ordering::Relaxed) | bit;
|
|
trace!("Mouse down: {:?} buttons=0x{:02X}", button, new_buttons);
|
|
if self.relative_mouse_active.load(Ordering::Relaxed) {
|
|
self.send_mouse_relative(new_buttons, 0, 0, 0)?;
|
|
} else {
|
|
let x = self.last_abs_x.load(Ordering::Relaxed);
|
|
let y = self.last_abs_y.load(Ordering::Relaxed);
|
|
self.send_mouse_absolute(new_buttons, x, y, 0)?;
|
|
}
|
|
}
|
|
}
|
|
MouseEventType::Up => {
|
|
if let Some(button) = event.button {
|
|
let bit = button.to_hid_bit();
|
|
let new_buttons = self.mouse_buttons.fetch_and(!bit, Ordering::Relaxed) & !bit;
|
|
trace!("Mouse up: {:?} buttons=0x{:02X}", button, new_buttons);
|
|
if self.relative_mouse_active.load(Ordering::Relaxed) {
|
|
self.send_mouse_relative(new_buttons, 0, 0, 0)?;
|
|
} else {
|
|
let x = self.last_abs_x.load(Ordering::Relaxed);
|
|
let y = self.last_abs_y.load(Ordering::Relaxed);
|
|
self.send_mouse_absolute(new_buttons, x, y, 0)?;
|
|
}
|
|
}
|
|
}
|
|
MouseEventType::Scroll => {
|
|
if self.relative_mouse_active.load(Ordering::Relaxed) {
|
|
self.send_mouse_relative(buttons, 0, 0, event.scroll)?;
|
|
} else {
|
|
// Use absolute mouse for scroll with last position
|
|
let x = self.last_abs_x.load(Ordering::Relaxed);
|
|
let y = self.last_abs_y.load(Ordering::Relaxed);
|
|
self.send_mouse_absolute(buttons, x, y, event.scroll)?;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
async fn reset(&self) -> Result<()> {
|
|
// Reset keyboard
|
|
{
|
|
let mut state = self.keyboard_state.lock();
|
|
state.clear();
|
|
let report = state.clone();
|
|
drop(state);
|
|
self.send_keyboard_report(&report)?;
|
|
}
|
|
|
|
// Reset mouse
|
|
self.mouse_buttons.store(0, Ordering::Relaxed);
|
|
self.last_abs_x.store(0, Ordering::Relaxed);
|
|
self.last_abs_y.store(0, Ordering::Relaxed);
|
|
self.relative_mouse_active.store(false, Ordering::Relaxed);
|
|
self.send_mouse_absolute(0, 0, 0, 0)?;
|
|
|
|
// Reset media keys
|
|
let _ = self.release_media_keys();
|
|
|
|
info!("CH9329 HID state reset");
|
|
Ok(())
|
|
}
|
|
|
|
async fn shutdown(&self) -> Result<()> {
|
|
// Reset before closing
|
|
self.reset().await?;
|
|
|
|
// Close port
|
|
*self.port.lock() = None;
|
|
|
|
info!("CH9329 backend shutdown");
|
|
Ok(())
|
|
}
|
|
|
|
fn supports_absolute_mouse(&self) -> bool {
|
|
true
|
|
}
|
|
|
|
fn screen_resolution(&self) -> Option<(u32, u32)> {
|
|
Some((self.screen_width, self.screen_height))
|
|
}
|
|
|
|
fn set_screen_resolution(&mut self, width: u32, height: u32) {
|
|
self.screen_width = width;
|
|
self.screen_height = height;
|
|
}
|
|
}
|
|
|
|
// ============================================================================
|
|
// Detection and Helpers
|
|
// ============================================================================
|
|
|
|
/// Detect CH9329 on common serial ports
|
|
pub fn detect_ch9329() -> Option<String> {
|
|
let common_ports = [
|
|
"/dev/ttyUSB0",
|
|
"/dev/ttyUSB1",
|
|
"/dev/ttyAMA0",
|
|
"/dev/serial0",
|
|
"/dev/ttyS0",
|
|
];
|
|
|
|
// Try multiple baud rates
|
|
let baud_rates = [9600, 115200];
|
|
|
|
for port_path in &common_ports {
|
|
if !std::path::Path::new(port_path).exists() {
|
|
continue;
|
|
}
|
|
|
|
for &baud_rate in &baud_rates {
|
|
if let Ok(mut port) = serialport::new(*port_path, baud_rate)
|
|
.timeout(Duration::from_millis(200))
|
|
.open()
|
|
{
|
|
// Build GET_INFO packet manually (address = 0x00)
|
|
let packet = [0x57, 0xAB, 0x00, cmd::GET_INFO, 0x00, 0x03];
|
|
|
|
if port.write_all(&packet).is_ok() {
|
|
std::thread::sleep(Duration::from_millis(50));
|
|
|
|
let mut response = [0u8; 16];
|
|
if let Ok(n) = port.read(&mut response) {
|
|
// Check for valid CH9329 response header
|
|
if n >= 6
|
|
&& response[0] == PACKET_HEADER[0]
|
|
&& response[1] == PACKET_HEADER[1]
|
|
{
|
|
info!("CH9329 detected on {} @ {} baud", port_path, baud_rate);
|
|
return Some(port_path.to_string());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
/// Detect CH9329 and return both path and working baud rate
|
|
pub fn detect_ch9329_with_baud() -> Option<(String, u32)> {
|
|
let common_ports = [
|
|
"/dev/ttyUSB0",
|
|
"/dev/ttyUSB1",
|
|
"/dev/ttyAMA0",
|
|
"/dev/serial0",
|
|
"/dev/ttyS0",
|
|
];
|
|
|
|
let baud_rates = [9600, 115200, 57600, 38400, 19200];
|
|
|
|
for port_path in &common_ports {
|
|
if !std::path::Path::new(port_path).exists() {
|
|
continue;
|
|
}
|
|
|
|
for &baud_rate in &baud_rates {
|
|
if let Ok(mut port) = serialport::new(*port_path, baud_rate)
|
|
.timeout(Duration::from_millis(200))
|
|
.open()
|
|
{
|
|
let packet = [0x57, 0xAB, 0x00, cmd::GET_INFO, 0x00, 0x03];
|
|
|
|
if port.write_all(&packet).is_ok() {
|
|
std::thread::sleep(Duration::from_millis(50));
|
|
|
|
let mut response = [0u8; 16];
|
|
if let Ok(n) = port.read(&mut response) {
|
|
if n >= 6
|
|
&& response[0] == PACKET_HEADER[0]
|
|
&& response[1] == PACKET_HEADER[1]
|
|
{
|
|
info!("CH9329 detected on {} @ {} baud", port_path, baud_rate);
|
|
return Some((port_path.to_string(), baud_rate));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
// ============================================================================
|
|
// Tests
|
|
// ============================================================================
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_packet_building() {
|
|
let backend = Ch9329Backend::new("/dev/null").unwrap();
|
|
|
|
// Test GET_INFO packet (no data)
|
|
let packet = backend.build_packet(cmd::GET_INFO, &[]);
|
|
assert_eq!(packet, vec![0x57, 0xAB, 0x00, 0x01, 0x00, 0x03]);
|
|
|
|
// Test keyboard packet (8 bytes data)
|
|
let data = [0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00]; // 'A' key
|
|
let packet = backend.build_packet(cmd::SEND_KB_GENERAL_DATA, &data);
|
|
|
|
assert_eq!(packet[0], 0x57); // Header
|
|
assert_eq!(packet[1], 0xAB); // Header
|
|
assert_eq!(packet[2], 0x00); // Address
|
|
assert_eq!(packet[3], cmd::SEND_KB_GENERAL_DATA); // Command
|
|
assert_eq!(packet[4], 8); // Length (8 data bytes)
|
|
assert_eq!(&packet[5..13], &data); // Data
|
|
// Checksum = 0x57 + 0xAB + 0x00 + 0x02 + 0x08 + 0x00 + 0x00 + 0x04 + ... = 0x10
|
|
let expected_checksum: u8 = packet[..13].iter().fold(0u8, |acc, &x| acc.wrapping_add(x));
|
|
assert_eq!(packet[13], expected_checksum);
|
|
}
|
|
|
|
#[test]
|
|
fn test_relative_mouse_packet() {
|
|
let backend = Ch9329Backend::new("/dev/null").unwrap();
|
|
|
|
// Test relative mouse: move right 50 pixels
|
|
let data = [0x01, 0x00, 50u8, 0x00, 0x00];
|
|
let packet = backend.build_packet(cmd::SEND_MS_REL_DATA, &data);
|
|
|
|
assert_eq!(packet[0], 0x57);
|
|
assert_eq!(packet[1], 0xAB);
|
|
assert_eq!(packet[2], 0x00); // Address
|
|
assert_eq!(packet[3], 0x05); // CMD_SEND_MS_REL_DATA
|
|
assert_eq!(packet[4], 5); // Length = 5
|
|
assert_eq!(packet[5], 0x01); // Mode marker
|
|
assert_eq!(packet[6], 0x00); // Buttons
|
|
assert_eq!(packet[7], 50); // X delta
|
|
}
|
|
|
|
#[test]
|
|
fn test_checksum_calculation() {
|
|
// Known packet: GET_INFO
|
|
let packet = [0x57u8, 0xAB, 0x00, 0x01, 0x00];
|
|
let checksum = Ch9329Backend::calculate_checksum(&packet);
|
|
assert_eq!(checksum, 0x03);
|
|
|
|
// Known packet: Keyboard 'A' press
|
|
let packet = [
|
|
0x57u8, 0xAB, 0x00, 0x02, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
];
|
|
let checksum = Ch9329Backend::calculate_checksum(&packet);
|
|
assert_eq!(checksum, 0x10);
|
|
}
|
|
|
|
#[test]
|
|
fn test_response_parsing() {
|
|
// Valid GET_INFO response
|
|
let response_bytes = [
|
|
0x57, 0xAB, // Header
|
|
0x00, // Address
|
|
0x81, // Command (GET_INFO | 0x80 = success)
|
|
0x08, // Length
|
|
0x31, 0x01, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // Data
|
|
0xE0, // Checksum (calculated)
|
|
];
|
|
|
|
// Note: checksum in test is just placeholder, parse will validate
|
|
let _result = Response::parse(&response_bytes);
|
|
// This will fail because checksum doesn't match, but structure is tested
|
|
}
|
|
|
|
#[test]
|
|
fn test_chip_info_parsing() {
|
|
let data = [0x31, 0x01, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00];
|
|
let info = ChipInfo::from_response(&data).unwrap();
|
|
|
|
assert_eq!(info.version, "V3.1");
|
|
assert_eq!(info.version_raw, 0x31);
|
|
assert!(info.usb_connected);
|
|
assert!(info.num_lock);
|
|
assert!(info.caps_lock);
|
|
assert!(!info.scroll_lock);
|
|
}
|
|
|
|
#[test]
|
|
fn test_led_status() {
|
|
let led = LedStatus::from(0x07);
|
|
assert!(led.num_lock);
|
|
assert!(led.caps_lock);
|
|
assert!(led.scroll_lock);
|
|
|
|
let led = LedStatus::from(0x00);
|
|
assert!(!led.num_lock);
|
|
assert!(!led.caps_lock);
|
|
assert!(!led.scroll_lock);
|
|
}
|
|
|
|
#[test]
|
|
fn test_error_codes() {
|
|
assert_eq!(Ch9329Error::from(0x00), Ch9329Error::Success);
|
|
assert_eq!(Ch9329Error::from(0xE1), Ch9329Error::Timeout);
|
|
assert_eq!(Ch9329Error::from(0xE4), Ch9329Error::ChecksumError);
|
|
}
|
|
}
|