refactor: 重构架构并整理仓库
This commit is contained in:
Horldsence
@@ -0,0 +1,540 @@
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#![cfg_attr(test, allow(clippy::unwrap_used, clippy::expect_used))]
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//! `EscBus` 异步驱动：协议状态机与 1kHz 控制节拍。
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//!
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//! [`EscBus::spawn`] 消费一个 [`CanLink`]，启动收发两个任务：
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//!
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//! - 接收：解码反馈帧，更新各电机共享状态（含多圈累计与方向修正）；
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//! - 发送：按 `period` 节拍为每台电机求值当前命令（速度/位置环 PID / 直发
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//! effort），按 `0x200`/`0x1FF` 分组组帧发送。
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//!
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//! 电机离线（从未收到反馈或反馈超时）时强制 0 输出并复位控制器。
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//! 命令模式切换时同样复位控制器，避免积分冲击。
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use std::sync::{Arc, Mutex, MutexGuard};
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use std::time::Duration;
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use can::{CanFrame, CanLink};
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use motor_protocol::common::{
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EscFeedback, EscModel, clamp_current, command_frame_id, decode_feedback, encode_current_frame,
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};
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use motor_protocol::{COMMAND_FRAME_ID_PRIMARY, COMMAND_FRAME_ID_SECONDARY, TurnTracker};
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use thiserror::Error;
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use tokio::sync::{mpsc, watch};
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use tokio::task::JoinHandle;
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use tokio::time::{Instant, Interval, MissedTickBehavior};
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use tracing::{debug, info, warn};
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use motor::{
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Command, Disable, EffortDrive, EffortPolicy, MotorFeedback, MotorState, PolicyInput,
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PolicySample, PositionDrive, VelocityDrive,
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};
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/// 锁辅助：中毒锁直接恢复内部数据（锁中毒只意味着持锁线程恐慌，
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/// 状态本身仍一致，驱动机不应因此停摆）。
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fn lock<T>(mutex: &Mutex<T>) -> MutexGuard<'_, T> {
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mutex.lock().unwrap_or_else(std::sync::PoisonError::into_inner)
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}
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/// 单台电机的配置。
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#[derive(Debug, Clone)]
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pub struct EscConfig {
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/// 便于日志辨认的名字（如 `front_left`）。
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pub name: String,
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/// 电调 ID（1–8，即 CAN 拨码）。
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pub esc_id: u8,
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/// 电调型号。
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pub model: EscModel,
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/// 减速比（电机转子 : 输出轴）。
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///
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/// 驱动层**不使用**此字段；由上层 `crate::OutputShaft` 应用。
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/// 保留于此作为配置元数据，`chassisd` 包装轮子时必须读取本字段（单一来源）。
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pub gear_ratio: f32,
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/// 安装方向：`+1.0` 或 `-1.0`。反装电机的读写符号在此统一翻转，
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/// 上层永远以"输出轴正转 = 前进方向"工作。
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pub direction: f32,
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/// effort 限幅（raw，`1..=型号满量程`）。
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pub current_limit: i16,
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}
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impl EscConfig {
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/// GM3508 + C620 的常用配置。`kp/ki/ff` 为起步值，需按整车整定。
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#[must_use]
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pub fn gm3508(name: impl Into<String>, esc_id: u8, direction: f32) -> Self {
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Self {
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name: name.into(),
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esc_id,
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model: EscModel::C620,
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// 3591 / 187 ≈ 19.203
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gear_ratio: 3591.0 / 187.0,
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direction,
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current_limit: 12_000,
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}
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}
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/// M2006 + C610（拨弹轮）的常用配置。
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///
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/// 减速比按 P36 起步（36.0），接硬件前需核对；电流标度见 [`EscModel::C610`]。
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#[must_use]
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pub fn m2006(name: impl Into<String>, esc_id: u8, direction: f32) -> Self {
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Self {
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name: name.into(),
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esc_id,
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model: EscModel::C610,
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// M2006 P36 减速比（接入前核对）
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gear_ratio: 36.0,
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direction,
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current_limit: 8_000,
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}
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}
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fn validate(&self) -> Result<(), String> {
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if command_frame_id(self.esc_id).is_none() {
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return Err(format!("esc_id {} out of range 1..=8", self.esc_id));
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}
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if !(self.gear_ratio.is_finite() && self.gear_ratio > 0.0) {
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return Err(format!("gear_ratio must be > 0, got {}", self.gear_ratio));
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}
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// 逐位比较：direction 只允许精确的 ±1.0。
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let dir_bits = self.direction.to_bits();
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if dir_bits != 1.0f32.to_bits() && dir_bits != (-1.0f32).to_bits() {
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return Err(format!("direction must be +1.0 or -1.0, got {}", self.direction));
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}
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if !(1..=self.model.max_current_raw()).contains(&self.current_limit) {
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return Err(format!(
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"current_limit {} out of range 1..={} for {:?}",
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self.current_limit,
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self.model.max_current_raw(),
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self.model
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));
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}
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Ok(())
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}
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}
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/// 总线运行参数。
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#[derive(Debug, Clone)]
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pub struct BusOptions {
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/// 控制节拍（C620 期望 1kHz 命令）。
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pub period: Duration,
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/// 反馈离线阈值：超过该时长未收到某电机反馈 → 强制 0 输出。
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pub feedback_timeout: Duration,
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/// **命令租约**：上层超过该时长未重新下发命令 → 视为 `Disabled`（0 输出）。
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///
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/// 命令是**租约**而非一次性设定值：`set_velocity` / `set_effort_raw` /
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/// `set_position` 每次调用都会续租。上层必须按自己的控制节拍周期性下发
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/// （`chassisd` 的 1kHz 循环天然满足；台架脚本每拍重发即可），
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/// 否则驱动会判定"上层任务已死"并强制零输出——这是防失控的安全设计。
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///
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/// 设置为 `Duration::MAX` 可退化为纯设定值语义（仅建议在无失控风险的台架场景）。
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pub command_timeout: Duration,
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}
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impl Default for BusOptions {
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fn default() -> Self {
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Self {
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period: Duration::from_millis(1),
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feedback_timeout: Duration::from_millis(100),
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// 1kHz 下约 50 拍未刷新即失效。
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command_timeout: Duration::from_millis(50),
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}
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}
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}
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/// 启动错误。
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#[derive(Debug, Clone, PartialEq, Eq, Error)]
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pub enum EscBusError {
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/// 两台电机配置了同一电调 ID。
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#[error("duplicate ESC id {0}")]
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DuplicateEscId(u8),
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/// 电机配置非法（原因见 `reason`）。
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#[error("invalid config for motor {name}: {reason}")]
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InvalidConfig {
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/// 电机名。
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name: String,
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/// 非法原因。
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reason: String,
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},
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/// 一台电机都没有配置。
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#[error("no motors configured")]
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NoMotors,
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}
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/// 单电机共享状态（驱动任务与 [`EscMotor`] 句柄之间）。
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struct MotorShared {
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cfg: EscConfig,
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state: Mutex<MotorState>,
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cmd: Mutex<Command>,
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/// 命令写入时刻（看门狗用）。
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cmd_at: Mutex<Option<Instant>>,
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turn: Mutex<TurnTracker>,
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last_feedback: Mutex<Option<Instant>>,
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offline_warned: std::sync::atomic::AtomicBool,
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}
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impl MotorShared {
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fn new(cfg: EscConfig) -> Self {
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Self {
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cfg,
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state: Mutex::new(MotorState::default()),
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cmd: Mutex::new(Command::Disabled),
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cmd_at: Mutex::new(None),
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turn: Mutex::new(TurnTracker::new()),
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last_feedback: Mutex::new(None),
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offline_warned: std::sync::atomic::AtomicBool::new(false),
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}
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}
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fn store_command(&self, cmd: Command) {
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*lock(&self.cmd) = cmd;
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*lock(&self.cmd_at) = Some(Instant::now());
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}
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/// 应用一帧反馈（原始电调侧值 → 方向修正后的物理量）。
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fn apply_feedback(&self, fb: EscFeedback, now: Instant) {
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let esc_rev = lock(&self.turn).update(fb.angle_raw);
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let dir = self.cfg.direction;
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{
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let mut st = lock(&self.state);
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st.rotor_angle_raw = fb.angle_raw;
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st.rotor_revolutions = dir * esc_rev;
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st.rotor_speed_rpm = dir * f32::from(fb.speed_rpm);
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st.effort_raw = (dir * f32::from(fb.current_raw)) as i16;
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st.temperature_c = fb.temperature_c;
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st.feedback_count = st.feedback_count.saturating_add(1);
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}
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*lock(&self.last_feedback) = Some(now);
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self.offline_warned.store(false, std::sync::atomic::Ordering::Relaxed);
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}
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/// Produce one policy sample while enforcing feedback and command leases.
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fn sample(
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&self,
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feedback_timeout: Duration,
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command_timeout: Duration,
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now: Instant,
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) -> PolicySample {
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let online = matches!(
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*lock(&self.last_feedback),
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Some(t) if now.saturating_duration_since(t) <= feedback_timeout
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);
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if !online && !self.offline_warned.swap(true, std::sync::atomic::Ordering::Relaxed) {
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warn!(motor = %self.cfg.name, esc_id = self.cfg.esc_id, "feedback offline, forcing zero current");
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}
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let fresh = matches!(
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*lock(&self.cmd_at),
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Some(t) if now.saturating_duration_since(t) <= command_timeout
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);
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let command = if online && fresh { *lock(&self.cmd) } else { Command::Disabled };
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PolicySample { id: self.cfg.esc_id, state: *lock(&self.state), command, online }
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}
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}
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/// 电机的公共句柄：可克隆，跨任务共享。
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///
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/// # 命令租约
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///
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/// 下发命令（[`VelocityDrive::set_velocity`] / [`EffortDrive::set_effort_raw`] /
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/// [`PositionDrive::set_position`]）即续租，租期见 [`BusOptions::command_timeout`]。
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/// 只在启动时下发一次、之后不再刷新的脚本会在租约到期后自动失电（0 输出），
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/// 因此台架工具必须在控制循环里逐拍重发同一个设定值。
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#[derive(Clone)]
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pub struct EscMotor {
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shared: Arc<MotorShared>,
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}
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impl EscMotor {
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/// 电机名。
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#[must_use]
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pub fn name(&self) -> &str {
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&self.shared.cfg.name
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}
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/// 电机配置。
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#[must_use]
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pub fn config(&self) -> &EscConfig {
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&self.shared.cfg
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}
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/// 当前命令。
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#[must_use]
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pub fn command(&self) -> Command {
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*lock(&self.shared.cmd)
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}
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/// 最近一帧反馈的时刻（诊断用）。
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#[must_use]
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pub fn last_feedback(&self) -> Option<Instant> {
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*lock(&self.shared.last_feedback)
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}
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}
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impl MotorFeedback for EscMotor {
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fn id(&self) -> u8 {
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self.shared.cfg.esc_id
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}
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fn state(&self) -> MotorState {
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*lock(&self.shared.state)
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}
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fn feedback_age(&self) -> Option<std::time::Duration> {
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let t = *lock(&self.shared.last_feedback);
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Some(Instant::now().saturating_duration_since(t?))
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}
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}
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impl VelocityDrive for EscMotor {
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/// 设定目标转子转速（**租约**，见 [`EscMotor`] 的命令租约说明）。
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fn set_velocity(&self, rotor_rpm: f32) {
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self.shared.store_command(Command::Velocity(rotor_rpm));
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}
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}
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impl EffortDrive for EscMotor {
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/// 直发开环 raw（**租约**，见 [`EscMotor`] 的命令租约说明）。
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fn set_effort_raw(&self, raw: i16) {
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self.shared.store_command(Command::EffortRaw(raw));
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}
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}
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impl PositionDrive for EscMotor {
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/// 设定目标转子多圈位置（**租约**，见 [`EscMotor`] 的命令租约说明）。
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fn set_position(&self, rotor_rev: f32) {
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self.shared.store_command(Command::Position(rotor_rev));
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}
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}
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impl Disable for EscMotor {
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/// 停用（0 输出）；同样受租约保护——上层若已死，租约到期后依旧归零。
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fn disable(&self) {
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self.shared.store_command(Command::Disabled);
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}
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}
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/// 运行中的电调总线。
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pub struct EscBus;
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impl EscBus {
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/// 启动收发任务，返回句柄。
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///
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/// # Errors
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///
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/// 配置为空、电调 ID 重复或单台配置非法时返回 [`EscBusError`]。
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pub fn spawn<P: EffortPolicy>(
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link: CanLink,
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configs: Vec<EscConfig>,
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options: BusOptions,
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policy: P,
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) -> Result<EscBusHandle<P>, EscBusError> {
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if configs.is_empty() {
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return Err(EscBusError::NoMotors);
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}
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let mut motors = Vec::with_capacity(configs.len());
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let mut seen = std::collections::HashSet::new();
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for cfg in configs {
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cfg.validate()
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.map_err(|reason| EscBusError::InvalidConfig { name: cfg.name.clone(), reason })?;
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if !seen.insert(cfg.esc_id) {
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return Err(EscBusError::DuplicateEscId(cfg.esc_id));
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}
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motors.push(EscMotor { shared: Arc::new(MotorShared::new(cfg)) });
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}
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let (shutdown_tx, shutdown_rx) = watch::channel(false);
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let CanLink { outgoing_tx, incoming_rx } = link;
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let motors = Arc::new(motors);
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let policy = Arc::new(Mutex::new(policy));
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let rx_handle =
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tokio::spawn(rx_loop(incoming_rx, Arc::clone(&motors), shutdown_rx.clone()));
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let tx_handle = tokio::spawn(tx_loop(
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outgoing_tx,
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Arc::clone(&motors),
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Arc::clone(&policy),
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options,
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shutdown_rx,
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));
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Ok(EscBusHandle { motors, policy, shutdown_tx, tasks: vec![rx_handle, tx_handle] })
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}
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}
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/// `EscBus` 的控制句柄。
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pub struct EscBusHandle<P> {
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motors: Arc<Vec<EscMotor>>,
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policy: Arc<Mutex<P>>,
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shutdown_tx: watch::Sender<bool>,
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tasks: Vec<JoinHandle<()>>,
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}
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impl<P: EffortPolicy> EscBusHandle<P> {
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/// 按电调 ID 取电机句柄。
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#[must_use]
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pub fn motor(&self, esc_id: u8) -> Option<&EscMotor> {
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self.motors.iter().find(|m| m.id() == esc_id)
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}
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/// 全部电机（按配置顺序）。
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#[must_use]
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pub fn motors(&self) -> &[EscMotor] {
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&self.motors
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}
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/// Mutate the composed control policy between bus ticks.
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pub fn with_policy<R>(&self, update: impl FnOnce(&mut P) -> R) -> R {
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update(&mut lock(&self.policy))
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}
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/// 停止收发任务并等待退出。
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pub async fn shutdown(self) {
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let _ = self.shutdown_tx.send(true);
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for task in self.tasks {
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let _ = task.await;
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||||
}
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}
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}
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async fn rx_loop(
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mut incoming: mpsc::Receiver<CanFrame>,
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motors: Arc<Vec<EscMotor>>,
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||||
mut shutdown: watch::Receiver<bool>,
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||||
) {
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||||
loop {
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let frame = tokio::select! {
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||||
_ = shutdown.changed() => break,
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||||
frame = incoming.recv() => match frame {
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||||
Some(frame) => frame,
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||||
None => break,
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},
|
||||
};
|
||||
match decode_feedback(&frame) {
|
||||
Ok((esc_id, fb)) => {
|
||||
if let Some(motor) = motors.iter().find(|m| m.id() == esc_id) {
|
||||
motor.shared.apply_feedback(fb, Instant::now());
|
||||
}
|
||||
}
|
||||
Err(e) => {
|
||||
debug!(error = %e, id = frame.id, "ignore non-feedback frame");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
async fn tx_loop<P: EffortPolicy>(
|
||||
outgoing: mpsc::Sender<CanFrame>,
|
||||
motors: Arc<Vec<EscMotor>>,
|
||||
policy: Arc<Mutex<P>>,
|
||||
options: BusOptions,
|
||||
mut shutdown: watch::Receiver<bool>,
|
||||
) {
|
||||
let nominal_dt = options.period.as_secs_f32();
|
||||
let mut ticker = tick_every(options.period);
|
||||
let mut last_tick = Instant::now();
|
||||
loop {
|
||||
tokio::select! {
|
||||
_ = shutdown.changed() => break,
|
||||
_ = ticker.tick() => {}
|
||||
}
|
||||
let now = Instant::now();
|
||||
let raw_dt = now.saturating_duration_since(last_tick).as_secs_f32();
|
||||
last_tick = now;
|
||||
let dt = raw_dt.clamp(nominal_dt * 0.5, nominal_dt * 4.0);
|
||||
let mut samples: [PolicySample; 8] = std::array::from_fn(|index| PolicySample {
|
||||
id: u8::try_from(index + 1).unwrap_or(0),
|
||||
state: MotorState::default(),
|
||||
command: Command::Disabled,
|
||||
online: false,
|
||||
});
|
||||
for motor in motors.iter() {
|
||||
let sample =
|
||||
motor.shared.sample(options.feedback_timeout, options.command_timeout, now);
|
||||
if let Some(slot) = samples.get_mut(usize::from(sample.id.saturating_sub(1))) {
|
||||
*slot = sample;
|
||||
}
|
||||
}
|
||||
let efforts = lock(&policy).step(&PolicyInput { samples, dt });
|
||||
for (frame_id, group_start) in
|
||||
[(COMMAND_FRAME_ID_PRIMARY, 1u8), (COMMAND_FRAME_ID_SECONDARY, 5u8)]
|
||||
{
|
||||
let group: Vec<&EscMotor> = motors
|
||||
.iter()
|
||||
.filter(|m| (group_start..group_start + 4).contains(&m.id()))
|
||||
.collect();
|
||||
if group.is_empty() {
|
||||
continue;
|
||||
}
|
||||
let mut currents = [0i16; 4];
|
||||
for motor in &group {
|
||||
let slot = usize::from(motor.id() - group_start);
|
||||
let policy_index = usize::from(motor.id().saturating_sub(1));
|
||||
let physical = efforts.get(policy_index).copied().unwrap_or(0);
|
||||
let directed = (f32::from(physical) * motor.shared.cfg.direction) as i16;
|
||||
currents[slot] = clamp_current(
|
||||
motor.shared.cfg.model,
|
||||
directed.clamp(-motor.shared.cfg.current_limit, motor.shared.cfg.current_limit),
|
||||
);
|
||||
}
|
||||
if outgoing.send(encode_current_frame(frame_id, currents)).await.is_err() {
|
||||
info!("can link closed, tx loop exiting");
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn tick_every(period: Duration) -> Interval {
|
||||
let mut ticker = tokio::time::interval(period);
|
||||
// 错过节拍后直接跳到当前节拍，避免补发帧风暴。
|
||||
ticker.set_missed_tick_behavior(MissedTickBehavior::Skip);
|
||||
ticker
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn config_validate_rejects_bad_values() {
|
||||
let mut cfg = EscConfig::gm3508("m", 1, 1.0);
|
||||
|
||||
cfg.esc_id = 0;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.esc_id = 9;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.esc_id = 5;
|
||||
|
||||
cfg.gear_ratio = 0.0;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.gear_ratio = 19.2;
|
||||
|
||||
cfg.direction = 0.5;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.direction = -1.0;
|
||||
|
||||
cfg.current_limit = 0;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.current_limit = 16385;
|
||||
assert!(cfg.validate().is_err());
|
||||
cfg.current_limit = 12_000;
|
||||
|
||||
assert!(cfg.validate().is_ok());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn gm3508_defaults_are_sane() {
|
||||
let cfg = EscConfig::gm3508("front_left", 1, -1.0);
|
||||
assert_eq!(cfg.model, EscModel::C620);
|
||||
assert!((cfg.gear_ratio - 19.2).abs() < 0.01);
|
||||
assert_eq!(cfg.current_limit, 12_000);
|
||||
assert_eq!(cfg.direction.to_bits(), (-1.0f32).to_bits());
|
||||
assert!(cfg.validate().is_ok());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn m2006_defaults_are_sane() {
|
||||
let cfg = EscConfig::m2006("feeder", 5, 1.0);
|
||||
assert_eq!(cfg.model, EscModel::C610);
|
||||
assert!((cfg.gear_ratio - 36.0).abs() < 0.01);
|
||||
assert!(cfg.validate().is_ok());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user