1. 挂载functionfs(mount -t functionfs none /dev/ffs-<name>). 2. 用户空间程序打开端点文件(如/dev/ffs-mtp/ep1in),进行数据读写操作。 区别和关系: 区别: -configfs主要用于配置和管理 USB Gadget 的属性和功能。 -functionfs主要用于实现用户空间和 USB 端点的数据传输。 关系: - 两者可以结合使用:通过...
write /config/usb_gadget/g1/strings/0x409/serialnumber "123456abc" write /config/usb_gadget/g1/strings/0x409/manufacturer "XXX" write /config/usb_gadget/g1/strings/0x409/product "YYY" mkdir /config/usb_gadget/g1/functions/ffs.adb mkdir /config/usb_gadget/g1/configs/b.1 0770 shell she...
mkdir /config/usb_gadget/g1/configs/c.1/strings/0x409 write /config/usb_gadget/g1/configs/c.1/strings/0x409/configuration "Conf 1" write /config/usb_gadget/g1/configs/c.1/MaxPower 120 # Create adb+ffs gadget function mkdir /config/usb_gadget/g1/functions/ffs.adb mkdir /dev/usb-ffs...
mount usb0 ffs -t functionfs -o gid=1000,uid=1000 echo 38100000.dwc3 > UDCit's UDC not success fully bind with gadget attach code snap dev_dbg(&udc->dev, "registering UDC driver [%s]\n",driver->function);udc->driver = driver;udc->dev.driver = &driver->driver;udc->gadget->...
移除Gadget rmdirtest_serial 1.3STM32MP157上的实验 因为STM32MP157 系统里已经使用 adb 设备,要想模拟串口设备,需要先清除 adb,命令如下: cd/sys/kernel/config/usb_gadget/g1echo""> UDCrmconfigs/b.1/ffs.adbrmdirconfigs/b.1/strings/0x409rmdirconfigs/b.1rmdirfunctions/ffs.adbrmstrings/0x409cd..rm...
而configfs是一个基于文件系统的内核对象管理器（或称为config_items），config_items在用户空间通过mkdir...
/config/usb_gadget/g1/functions /config/usb_gadget/g1/strings /config/usb_gadget/g1/configs/b.1 /config/usb_gadget/g1/configs/b.1/strings item: --- /config/usb_gadget/g1/os_desc /config/usb_gadget/g1/configs/b.1/strings/0x409 /config...
+ mkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shell + write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "Conf 1" + write /config/usb_gadget/g1/configs/b.1/MaxPower 120 + + # Create adb+ffs gadget function ...