广州微网站建设多少钱,区块链开发前景,网站的花费,网站建设贰金手指科捷6文章目录Linux USB 开发指南1 前言1.1 文档简介1.2 目标读者1.3 适用范围2 模块介绍2.1 模块功能介绍2.2 相关术语介绍2.3 模块配置介绍2.3.1 Device Tree 配置说明2.3.2 board.dts 配置说明2.3.3 kernel menuconfig 配置说明2.4 源码结构介绍2.5 驱动框架介绍2.6 Gadget 配置2…
文章目录Linux USB 开发指南1 前言1.1 文档简介1.2 目标读者1.3 适用范围2 模块介绍2.1 模块功能介绍2.2 相关术语介绍2.3 模块配置介绍2.3.1 Device Tree 配置说明2.3.2 board.dts 配置说明2.3.3 kernel menuconfig 配置说明2.4 源码结构介绍2.5 驱动框架介绍2.6 Gadget 配置2.6.1 打开内核配置2.6.2 linux-4.x/linux-5.4 USB Gadget 配置流程2.7 端点配置2.7.1 端点 fifo 大小2.7.2 端点的属性2.7.3 定义端点的方向2.8 调试方法2.8.1 调试节点2.8.1.1 USB0 调试节点2.8.1.2 USB1 调试节点2.8.2 眼图测试2.8.2.1 USB Device 眼图测试2.8.2.2 USB Host 眼图测试3 FAQ3.1 常见问题3.1.1 USB 基本功能异常排查3.1.1.1 USB Host 基本功能异常排查步骤3.1.1.2 USB Device 基本功能异常排查步骤3.1.2 配置其他 gadget 功能前关闭 adb 功能时却报异常的解决办法4 附录4.1 Linux-4.x/Linux-5.4 Gadget 配置示例4.1.1 小机做 mass storage4.1.2 小机做 cdrom4.1.4 小机做 UAC24.1.5 小机做 UVC4.1.6 小机做 HID4.1.7 小机做 rndis4.1.8 小机做 acm4.1.9 小机做 adb4.1.10 小机做 mass storageadb4.1.11 小机做 uvcuac14.1.12 小机做 hidcdrom4.1.13 小机做 rndisadbLinux USB 开发指南
1 前言
1.1 文档简介
介绍 USB 模块配置和调试方法。
1.2 目标读者
USB 模块开发、维护人员。
1.3 适用范围
表 1-1: 适用产品列表
内核版本驱动文件Linux-4.9drivers/usb/*Linux-5.4drivers/usb/*
2 模块介绍
2.1 模块功能介绍
USB 有主机功能和从设备功能。做主机时能连接 U 盘、USB 鼠标等 USB 设备做从设备时具有 ADB 调试等从设备功能。
2.2 相关术语介绍
表 2-1: 术语介绍
术语说明USBUniversal Serial Bus, 通用串行总线OTGOn-The-GoADBAndroid Debug BridgeAndroid 调试桥Gadget小配件HCDHost Controller Driver主机控制器驱动UDCUSB Device Controller, USB 设备控制器HCIHost Controller Interface主机控制器接口EHCIEnhanced Host Controller Interface增强型主机控制器接口OHCIOpen Host Controller Interface开放式主机控制器接口
2.3 模块配置介绍
2.3.1 Device Tree 配置说明
设备树中存在的是该类芯片所有平台的模块配置设备树文件的路径为kernel/linux-4.9/arch/arm6432 位平台为 arm/boot/dts/sunxi/xxx.dtsixxx 为具体芯片型号如 sun50iw10p1 等, 设备树配置如下所示
• USB0 配置
usbc0:usbc00 {device_type usbc0;compatible allwinner,sunxi-otg-manager;usb_port_type 2;usb_detect_type 1;usb_id_gpio;usb_det_vbus_gpio;usb_regulator_io nocare;usb_wakeup_suspend 0;usb_luns 3;usb_serial_unique 0;usb_serial_number 20080411;rndis_wceis 1;status okay;
};udc:udc-controller0x05100000 {compatible allwinner,sunxi-udc;reg 0x0 0x05100000 0x0 0x1000, /*udc base*/0x0 0x00000000 0x0 0x100, /*sram base*/0x0 0x05200000 0x0 0x1000; /*usb1 base, for common circuit*/interrupts GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH; /*设备使用的中断*/clocks clk_usbphy0, clk_usbotg, clk_usbehci1, clk_usbphy1; /*设备使用的时钟*/status okay; /*是否使能该设备*/
};ehci0:ehci0-controller0x05101000 {compatible allwinner,sunxi-ehci0;reg 0x0 0x05101000 0x0 0xFFF, /*hci0 base*/0x0 0x00000000 0x0 0x100,0x0 0x05100000 0x0 0x1000,0x0 0x07010250 0x0 0x10, /*prcm base, for usb standby*/0x0 0x05200000 0x0 0x1000; /*usb1 base, for common circuit*/interrupts GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH;clocks clk_usbphy0, clk_usbehci0, clk_usbehci1, clk_usbphy1;hci_ctrl_no 0; /*主机控制器的序列*/status okay;
};ohci0:ohci0-controller0x05101400 {compatible allwinner,sunxi-ohci0;reg 0x0 0x05101000 0x0 0xFFF, /*hci0 base*/0x0 0x00000000 0x0 0x100,0x0 0x05100000 0x0 0x1000,0x0 0x07010250 0x0 0x10, /*prcm base, for usb standby*/0x0 0x05200000 0x0 0x1000;/*usb1 base, for common circuit*/interrupts GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH;clocks clk_usbphy0, clk_usbohci0, clk_usbohci1, clk_usbphy1;hci_ctrl_no 0;status okay;
};• USB1 配置
usbc1:usbc10 {device_type usbc1;usb_regulator_io nocare;usb_wakeup_suspend 0;status okay;
};ehci1:ehci1-controller0x05200000 {compatible allwinner,sunxi-ehci1;reg 0x0 0x05200000 0x0 0xFFF,0x0 0x00000000 0x0 0x100,0x0 0x05100000 0x0 0x1000,0x0 0x07010250 0x0 0x10;interrupts GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH;clocks clk_usbphy1, clk_usbehci1;hci_ctrl_no 1;status okay;
};ohci1:ohci1-controller0x05200400 {compatible allwinner,sunxi-ohci1;reg 0x0 0x05200000 0x0 0xFFF,0x0 0x00000000 0x0 0x100,0x0 0x05100000 0x0 0x1000,0x0 0x07010250 0x0 0x10;interrupts GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH;clocks clk_usbphy1, clk_usbohci1, clk_usbohci1_12m, clk_osc48md4, clk_hosc, clk_losc;hci_ctrl_no 1;status okay;
};2.3.2 board.dts 配置说明
board.dts 用于保存每一个板级平台的设备信息如 demo 板perf1 板等里面的配置信息会覆盖上面的 Device Tree 默认配置信息。不同 soc、版型及内核版本对应的 board.dts 具体路径如下device/config/chips/soc/conf igs/{board}/${内核版本}/board.dts。
• USB0 配置
usbc0:usbc00 {device_type usbc0;usb_port_type 0x2;usb_detect_type 0x1;usb_id_gpio pio PH 8 0 0 0xffffffff 0xffffffff;usb_det_vbus_gpio axp_ctrl; usb_regulator_io nocare;det_vbus_supply usb_power_supply;usb_wakeup_suspend 0;usb_luns 3;usb_serial_unique 0;usb_serial_number 20080411;rndis_wceis 1;status okay;
};注1usb_port_typeusb0口默认的模式。
置0devcie模式
置1host模式
置2otg模式。
2usb_detect_typeusb0口otg检测模式。
置0不做检测
置1vbus/id检测
置2id/dpdm检测。
3usb_wakeup_suspendstandby模式。
置0super standby模式
置1usb standby模式支持远程唤醒。udc:udc-controller0x51000000 {det_vbus_supply usb_power_supply
}ehci0:ehci0-controller0x05101000 {drvvbus-supply reg_drivevbus;
};ohci0:ohci0-controller0x05101400 {drvvbus-supply reg_drivevbus;
};说明
若使用 usb standby 模式需注意如下
1、IC 支持远程唤醒
2、若条件 1 满足相关硬件部分需严格按照《硬件设计文档》设计
3、若条件 1、2 满足额外添加属性 “wakeup-source;”, 启用 usb standby 功能。
• USB1 配置
usbc1:usbc10 {device_type usbc1;usb_regulator_io nocare;usb_wakeup_suspend 0;status okay;
};ehci1:ehci1-controller0x05200000 {drvvbus-supply reg_usb1_vbus;
};ohci1:ohci1-controller0x05200400 {drvvbus-supply reg_usb1_vbus;
};• Vbus 配置
reg_usb1_vbus: usb1-vbus {compatible regulator-fixed;gpio pio PH 10 1 2 0 1;regulator-name usb1-vbus;regulator-min-microvolt 5000000;regulator-max-microvolt 5000000;regulator-enable-ramp-delay 1000;enable-active-high;
};2.3.3 kernel menuconfig 配置说明
进入内核根目录执行 make ARCHarm menuconfig64 位平台为 make ARCHarm64 menuconfig进入配置主界面并按以下步骤操作
选择 Device Drivers 选项进入下一级配置如下图所示。 图 2-1: Device Drivers 选项配置
选择 USB support 选项进入下一级配置如下图所示。 图 2-2: USB Support 选项配置
打开如下两图的选项如下图所示。 图 2-3: USB Support 详细配置 1 图 2-4: USB Support 详细配置 2
选择 USB Gadget Support进入下一级配置如下图所示。 图 2-5: USB Gadget Support 选项配置
打开下图的选项并在对应配置中打开所需的功能性配置, 如: 需要存储功能时, 需打开下图中的 “mass storage” 配置, 如下图所示。 图 2-6: USB Gadget Support 详细配置
进入 USB Peripheral Controller并打开下图选项 图 2-7: USB Peripheral Controller 详细配置
返回上一级即 USB support进入 SUNXI USB2.0 Dual Role controller support并打开下图选项如下图所示。 图 2-8: SUNXI USB2.0 Dual Role Controller Support 详细配置
若需支持 MTP PTP 等功能需开启 TYPEC 配置返回上一级即 USB support进入 USB Type-C Support并打开下图选项如下图所示 图 2-9: USB Type-C Support 详细配置
2.4 源码结构介绍
USB 驱动的源代码位于内核 drivers/usb 目录下如下是 sunxi 平台相关源码
• Host
drivers/usb/host/
├── ehci_sunxi.c
├── ohci_sunxi.c
├── sunxi_hci.c
├── sunxi_hci.h• UDC 和 Manager
drivers/usb/sunxi_usb/
├── include
│ ├── sunxi_hcd.h
│ ├── sunxi_sys_reg.h
│ ├── sunxi_udc.h
│ ├── sunxi_usb_board.h
│ ├── sunxi_usb_bsp.h
│ ├── sunxi_usb_config.h
│ ├── sunxi_usb_debug.h
│ └── sunxi_usb_typedef.h
├── Kconfig
├── Makefile
├── manager
│ ├── usbc0_platform.c
│ ├── usbc_platform.h
│ ├── usb_hcd_servers.c
│ ├── usb_hcd_servers.h
│ ├── usb_hw_scan.c
│ ├── usb_hw_scan.h
│ ├── usb_manager.c
│ ├── usb_manager.h
│ ├── usb_msg_center.c
│ └── usb_msg_center.h
├── misc
│ └── sunxi_usb_debug.c
├── udc
│ ├── sunxi_udc_board.c
│ ├── sunxi_udc_board.h
│ ├── sunxi_udc.c
│ ├── sunxi_udc_config.h
│ ├── sunxi_udc_debug.c
│ ├── sunxi_udc_debug.h
│ ├── sunxi_udc_dma.c
│ └── sunxi_udc_dma.h
└── usbc├── usbc.c├── usbc_dev.c├── usbc_i.h└── usbc_phy.c2.5 驱动框架介绍
Linux 内核提供了完整的 USB 驱动程序框架。USB 总线采用树形结构在一条总线上只能有唯一的主机设备。Linux 内核从主机和设备两个角度观察 USB 总线结构。下图是 Linux 内核从主机和设备两个角度观察 USB 总线结构的示意图。 图 2-10: USB 驱动总体结构
USB 子系统主要任务包括
a. 注册和管理设备驱动
b. USB 设备寻找驱动并初始化和配置设备
c. 内核中表现设备的树形结构
d. 与设备交互。
2.6 Gadget 配置
Gadget 是指具有 USB 设备控制器的 USB 设备根据具体的功能配置连接到 PC 后可以作为 mass storage、uac 等设备。Linux 有原生 gadget 框架通用的配置流程可参考下文。
2.6.1 打开内核配置
需在 “USB functions configurable through configfs” 下选择需要的功能。 图 2-11: linux-4.x usb gadget 配置选择
2.6.2 linux-4.x/linux-5.4 USB Gadget 配置流程
Linux-4.x/Linux-5.4 使用 configfs 框架实现 composite gadget 功能。具体流程如下
• 挂载 configs
mount -t configfs none /sys/kernel/config挂载完成之后在/sys/kernel/config 目录下就会生成 usb_gadget/目录。
• 建立 gadgets
mkdir /sys/kernel/config/usb_gadget/g1创建g1/目录之后该目录下会生成很多配置目录这里的g1表示 gadget 1一个 UDC 对应一个 gadget如果你的 SOC 上有多个 gadget可以创建多个gx目录。
• 写入 gadget 的 PID、VID、序列号等信息
echo VID /sys/kernel/config/usb_gadget/g1/idVendor
echo PID /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
echo manufacturer /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
echo product /sys/kernel/config/usb_gadget/g1/strings/0x409/product• 建立 gadget 相关配置 configurations
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409• 建立功能 functions
mkdir /sys/kernel/config/usb_gadget/g1/functions/name.instance namefunction name 任意字符串
• 建立功能和配置的链接
ln -s /sys/kernel/config/usb_gadget/g1/functions/name.instance name /sys/kernel/config/
usb_gadget/g1/configs/c.1• 使能 gadget
echo udc name UDC常见 Gadget 功能的配置方式见附录。
2.7 端点配置
在 Gadget 配置使用过程中可能出现端点的默认配置方式无法满足需求的情况故需对端点进行修改满足需求。可参考现有的端点进行修改。譬如将批量端点改成中断端点参考现有的中断端点进行修改即可。改动内容包括端点 fifo 大小端点属性端点方向。
2.7.1 端点 fifo 大小
以4k平台为例
static const struct sw_udc_fifo ep_fifo[] {{ep0name, 0, 512, 0},/*name fifo_addr fifo_size, double_fifo*/{ep1in_bulk_name, 512, 512, 0},{ep1out_bulk_name, 1024, 512, 0},{ep2in_bulk_name, 1536, 512, 0},{ep2out_bulk_name, 2048, 512, 0},{ep3_iso_name, 2560, 1024, 0},{ep4_int_name, 3584, 512, 0},
};2.7.2 端点的属性
.ep[2] {.num 1,.ep {.name ep1out_bulk_name,.ops sunxi_udc_ep_ops,.maxpacket SW_UDC_EP_FIFO_SIZE,.maxpacket_limit SW_UDC_EP_FIFO_SIZE,.caps USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK,USB_EP_CAPS_DIR_OUT),},.dev sunxi_udc,.bEndpointAddress (USB_DIR_OUT | 1),.bmAttributes USB_ENDPOINT_XFER_BULK,
},2.7.3 定义端点的方向
/*** ep_fifo_in[i] {n} i: the physic ep index, n: ep_fifos index for the ep** eg: ep_fifo_in[2] {3} ep2_in is in ep_fifo[3]* * ep3_iso_name and ep4_int_name cannot be tx or rx simultaneously. * */
static const int ep_fifo_in[] {0, 1, 3, 5, 6, 7};
static const int ep_fifo_out[] {0, 2, 4, 5, 6, 8};2.8 调试方法
2.8.1 调试节点
2.8.1.1 USB0 调试节点
查看 USB0 当前 Role
cat /sys/devices/platform/soc/usbc0/otg_role手动切换到 Host 模式
cat /sys/devices/platform/soc/usbc0/usb_host手动切换到 Device 模式
cat /sys/devices/platform/soc/usbc0/usb_device2.8.1.2 USB1 调试节点
卸载主机驱动
通过下述命令找到主机驱动节点及对应路径
find -name ehci_enable
find -name ohci_enable然后根据上述结果按如下命令卸载主机驱动 (以 t5 平台为例)
echo 0 sys/devices/platform/soc/5200000.ehci1-controller/ehci_enable
echo 0 sys/devices/platform/soc/5200000.ohci1-controller/ohci_enable加载主机驱动
通过下述命令找到主机驱动节点及对应路径
find -name ehci_enable
find -name ohci_enable然后根据上述结果按如下命令加载主机驱动 (以 t5 平台为例)
echo 1 sys/devices/platform/soc/5200000.ehci1-controller/ehci_enable
echo 1 sys/devices/platform/soc/5200000.ohci1-controller/ohci_enable2.8.2 眼图测试
2.8.2.1 USB Device 眼图测试
获取otg_ed_test的路径path
find /sys/ -name otg_ed_test
测试眼图命令
echo test_pack path/otg_ed_test2.8.2.2 USB Host 眼图测试
获取ed_test的路径path
find /sys/ -name ed_test
测试眼图命令
echo test_pack path/ed_test3 FAQ
3.1 常见问题
3.1.1 USB 基本功能异常排查
3.1.1.1 USB Host 基本功能异常排查步骤
• 多找几个 USB 设备试试排除个别 USB 设备本身的问题。
• 多更换几根 USB 线缆试试排除个别 USB 线缆的问题。
• 多找几个 PC 主机做相同的实验作为参考对比。若在 PC 有相同现象则认为正常。
• 若硬件有多个 USB 口尝试同样条件下测试其他 USB 口的主机功能是否正常。
• 样机设备 USB 口外接独立供电的 USB-HUB 设备再将 USB 设备连接到 USB-HUB 上确认主机功能是否正常。
• 确认主机驱动是否加载成功。
1若为 USB0 口则可通过如下方式确认:
cat /sys/devices/platform/soc/usbc0/otg_role2若为 USB1 口可通过如下方式确认:
cat sys/devices/platform/soc/5200000.ehci1-controller/ehci_enable
cat sys/devices/platform/soc/5200000.ohci1-controller/ohci_enable若为0则没有加载Host驱动。
• 重新加载 Host 驱动确认此时功能是否正常。
1若为 USB0 口则可通过如下方式:
方式1重新插拔OTG线。
方式2手动切换到Host模式。2若为 USB1 口则可通过卸载驱动、再加载驱动。
• 对比 SDK 代码与最新发布的代码或者补丁, 确认代码是否更新到最新。
• 同样条件下分别打印出功能异常板子和功能正常板子的相关寄存器并进行对比确认是否有不同之处。
• 出现异常时测试 USB 高速眼图是否正常。
• 若眼图测试未通过可尝试调节眼图参数。
3.1.1.2 USB Device 基本功能异常排查步骤
• 多换几个 PC 主机做相同的测试排除个别 PC 的问题。
• 多更换几根 USB 线缆做相同的测试排除个别 USB 线缆的问题。
• 确认 Device 驱动是否加载成功可通过如下方式:
1通过 Log。
[ 104.732695] insmod_device_driver
[ 104.732695]
device_chose finished!2通过节点查看当前 Role。
• 重新加载 Device 驱动确认此时功能是否恢复正常。
1重新插拔 USB 线。
2手动切换到 Device 模式。
• 对比 SDK 代码与最新发布的代码或者补丁, 确认代码是否更新到最新。
• 同样条件下分别打印出功能异常板子和功能正常板子的相关寄存器并进行对比确认是否有异常。
• 出现异常时确认 USB 高速眼图是否正常。
3.1.2 配置其他 gadget 功能前关闭 adb 功能时却报异常的解决办法
问题产生的原因是仅执行./etc/adb_conf.sh stop 只是强制杀死 adb 守护进程但 adb 功能链接仍存当配置其他 gadget 功能时便会复合 adb 链接导致异常故在需要配置其他 gadget 功能时除了强制杀死 adb 守护进程还须移除 adb 功能链接在小机中操作步骤如下
1、./etc/adb_conf.sh stop
2、umount /sys/kernel/config
3、rm -fr /sys/kernel/config/usb_gadget/g1/configs/c.1/ffs.adb执行以上操作正常关闭 adb 后根据需要的 gadget 功能参考【附录】章节进行配置即可。
4 附录
4.1 Linux-4.x/Linux-5.4 Gadget 配置示例
4.1.1 小机做 mass storage
dd if/dev/zero of/dev/a.bin bs1M count100
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x18d1 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0001 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
echo /dev/a.bin /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/lun.0/file
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/ /sys/kernel/config/
usb_gadget/g1/configs/c.1/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC说明
如果需要增加 lun在 functions/mass_storage.usb0 下
mkdir lun.1
mkdir lun.2
4.1.2 小机做 cdrom
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0xa4ac /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
echo 1 /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/lun.0/cdrom
echo /tmp/phoenixcard.iso /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/
lun.0/file
ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/ /sys/kernel/config/
usb_gadget/g1/configs/c.1/mass_storage.usb0
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC说明
/tmp/phoenixcard.iso 根据实际情况更改。
4.1.4 小机做 UAC2
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1d61 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0101 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/uac2.usb0
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/uac2.usb0/ /sys/kernel/config/usb_gadget/
g1/configs/c.1/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.5 小机做 UVC
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x100d /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0
mkdir -p /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p
echo 1280 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/wWidth
echo 720 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/
wHeight
echo 333333 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/
dwFrameInterval
echo 333333 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/
dwDefaultFrameInterval
echo 442368000 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p
/dwMinBitRate
echo 442368000 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p
/dwMaxBitRate
echo 1843200 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/
dwMaxVideoFrameBufferSize
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/class/fs
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/class/hs
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/control/class/fs/
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/control/class/ss/
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/ /sys/kernel/config/usb_gadget/g1
/configs/c.1/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.6 小机做 HID
mount -t configfs none /sys/kernel/config/
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x0525 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0xa4ac /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/hid.usb0
echo 512 /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/report_length
echo -ne report_desc /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/report_desc
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC说明
report_desc 根据需求自定义。
4.1.7 小机做 rndis
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x200a /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/rndis.usb0
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/rndis.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/rndis.usb0
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.8 小机做 acm
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0007 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/acm.usb0
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/acm.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/acm.usb0
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.9 小机做 adb
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x18d1 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0002 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
echo 20080411 /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
echo Android /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
mkdir /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb/ /sys/kernel/config/usb_gadget/g1/
configs/c.1/ffs.adb
mkdir /dev/usb-ffs
mkdir /dev/usb-ffs/adb
mount -o uid2000,gid2000 -t functionfs adb /dev/usb-ffs/adb/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.10 小机做 mass storageadb
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x18d1 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0003 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
echo 20080411 /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
echo Android /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
mkdir /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
echo ${BLOCK_PATH} /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/lun.0/file
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/ /sys/kernel/config/
usb_gadget/g1/configs/c.1/mass_storage.usb0
ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb/ /sys/kernel/config/usb_gadget/g1/
configs/c.1/ffs.adb
mkdir /dev/usb-ffs
mkdir /dev/usb-ffs/adb
mount -o uid2000,gid2000 -t functionfs adb /dev/usb-ffs/adb/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.11 小机做 uvcuac1
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x100d /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/uac1.usb0
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0
mkdir -p /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p
echo 1280 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/wWidth
echo 720 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/wHeight
echo 333333 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwFrameInterval
echo 333333 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwDefaultFrameInterval
echo 442368000 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMinBitRate
echo 442368000 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMaxBitRate
echo 1843200 /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMaxVideoFrameBufferSize
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/class/fs
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/streaming/class/hs
mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/control/class/fs/
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/
config/usb_gadget/g1/functions/uvc.usb0/control/class/ss/
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/ /sys/kernel/config/usb_gadget/g1
/configs/c.1/
ln -s /sys/kernel/config/usb_gadget/g1/functions/uac1.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.12 小机做 hidcdrom
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x1f3a /sys/kernel/config/usb_gadget/g1/idVendor
echo 0xa4ac /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/hid.usb0
mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
echo 512 /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/report_length
echo -ne report_desc /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/report_desc
ln -s /sys/kernel/config/usb_gadget/g1/functions/hid.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/hid.usb0
echo 1 /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/lun.0/cdrom
echo /tmp/phoenixcard.iso /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/lun.0/file
ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/mass_storage.usb0
ls /sys/class/udc/ | xargs echo /sys/kernel/config/usb_gadget/g1/UDC4.1.13 小机做 rndisadb
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/g1
echo 0x18d1 /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x0010 /sys/kernel/config/usb_gadget/g1/idProduct
mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
mkdir /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
mkdir /sys/kernel/config/usb_gadget/g1/functions/rndis.usb0
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
echo 0xc0 /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
echo 500 /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
ln -s /sys/kernel/config/usb_gadget/g1/functions/rndis.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/rndis.usb0
ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb/ /sys/kernel/config/usb_gadget/g1/configs/c.1/ffs.adb
mkdir /dev/usb-ffs
mkdir /dev/usb-ffs/adb
mount -o uid2000,gid2000 -t functionfs adb /dev/usb-ffs/adb/
ls/sys/class/udc/|xargs echo/sys/kernel/config/usb_gadget/g1/UDC
