dummy_usb_lib/get_com.sh at main · lzd-1230/dummy_usb_lib · GitHub

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#!/bin/bash

echo "=== 串口设备列表 ==="
echo ""

# 函数：检查设备是否真实存在且可访问
check_device() {
    local dev=$1
    if [ -e "$dev" ]; then
        # 尝试读取设备信息
        if udevadm info "$dev" >/dev/null 2>&1; then
            return 0
        fi
    fi
    return 1
}

# 函数：显示设备详细信息
show_device_info() {
    local dev=$1
    if check_device "$dev"; then
        echo "  $dev"
        # 获取设备信息
        local vendor=$(udevadm info "$dev" 2>/dev/null | grep "ID_VENDOR=" | cut -d= -f2)
        local model=$(udevadm info "$dev" 2>/dev/null | grep "ID_MODEL=" | cut -d= -f2)
        local serial=$(udevadm info "$dev" 2>/dev/null | grep "ID_SERIAL_SHORT=" | cut -d= -f2)
        local driver=$(udevadm info "$dev" 2>/dev/null | grep "ID_USB_DRIVER=" | cut -d= -f2)

        if [ -n "$vendor" ]; then
            echo "    厂商: $vendor"
        fi
        if [ -n "$model" ]; then
            echo "    型号: $model"
        fi
        if [ -n "$serial" ]; then
            echo "    序列号: $serial"
        fi
        if [ -n "$driver" ]; then
            echo "    驱动: $driver"
        fi

        # 检查是否被占用
        if lsof "$dev" >/dev/null 2>&1; then
            echo "    状态: 已被占用"
            lsof "$dev" | tail -n +2 | awk '{print "      进程: " $1 " (PID: " $2 ")"}'
        else
            echo "    状态: 可用"
        fi
        echo ""
    fi
}

# USB串口设备
echo "=== USB串口设备 (ttyUSB*) ==="
usb_devices=$(ls /dev/ttyUSB* 2>/dev/null)
if [ -z "$usb_devices" ]; then
    echo "未找到 ttyUSB* 设备"
else
    for dev in $usb_devices; do
        show_device_info "$dev"
    done
fi
echo ""

# ACM设备
echo "=== USB ACM设备 (ttyACM*) ==="
acm_devices=$(ls /dev/ttyACM* 2>/dev/null)
if [ -z "$acm_devices" ]; then
    echo "未找到 ttyACM* 设备"
else
    for dev in $acm_devices; do
        show_device_info "$dev"
    done
fi
echo ""

# 传统串口 - 只显示实际存在的设备
echo "=== 传统串口 (ttyS*) - 仅显示实际设备 ==="
serial_devices=$(ls /dev/ttyS* 2>/dev/null)
found_real=0
if [ -n "$serial_devices" ]; then
    for dev in $serial_devices; do
        # 检查是否是真实硬件设备（通过检查设备是否可访问）
        if check_device "$dev"; then
            # 进一步检查：尝试打开设备（非阻塞）
            if timeout 0.1 cat "$dev" >/dev/null 2>&1 || [ $? -eq 124 ] || [ $? -eq 1 ]; then
                show_device_info "$dev"
                found_real=1
            fi
        fi
    done
    if [ $found_real -eq 0 ]; then
        echo "未找到实际可用的 ttyS* 设备"
        echo "提示: 大部分 ttyS* 设备可能是虚拟的，实际USB串口通常显示为 ttyUSB* 或 ttyACM*"
    fi
else
    echo "未找到 ttyS* 设备"
fi
echo ""

# 总结：推荐使用的设备
echo "=== 推荐检查的设备 ==="
echo "通常机械臂使用USB转串口，优先检查以下设备："
for dev in /dev/ttyUSB* /dev/ttyACM*; do
    if [ -e "$dev" ]; then
        echo "  - $dev"
    fi
done