如果usb的第i个port处于resume或reset状态,则hub中busy_bits中第i个位置1;如果busy_bits中第i个位置1,则退过当前port;event_bits中第0位用来表示hub本身是否产生local power status change和是否产生过流,其它的各位用来表示hub下各个port状态是否发生变化,这些状态包括: ConnectStatusChange 连接状态发生变化,PortEnab...
the USB port on a PV device to implement local device maintenance through the WLAN and mobile app. For details about the applicable device models, version mapping, and operations on the devices, see the FusionSolar App User Manual. • Before using the WLAN module, ensure that the device...
主机,也称为根,根结或根Hub,它做在主板上或作为适配卡安装在计算机上,主机包含有主控制器和根集线器(Root Hub),控制着USB总线上的数据和控制信息的流动,每个USB系统只能有一个根集线器,它连接在主控制器上。 集线器是USB结构中的特定成分,它提供叫做端口(Port)的点将设备连接到USB总线上,同时检测连接在总线上的...
stat = cyu3pusbgetLink PowerState(usb3mode);& 而((glforceLinku2)(stat == CY_U3P_SUCCESS)&&(usb3mode == cyu3pusblpm_u0))&& { /* 反复尝试进入 U2 状态。*/ cyu3pusbsetLink PowerState (cyu3pusblpm_u2); cyu3pThreadSleep (5); ...
the USB port on a PV device to implement local device maintenance through the WLAN and mobile app. For details about the applicable device models, version mapping, and operations on the devices, see the FusionSolar App User Manual. • Before using the WLAN module, ensure that the device...
hub_power_on(hub, true); } //一个端口从Resetting状态进入到Enabled状态 if (portchange & USB_PORT_STAT_C_RESET) { dev_dbg (hub_dev, "reset change on port %d\n", i); clear_port_feature(hdev, i, USB_PORT_FEAT_C_RESET);
return stat; } return STA_NOINIT; } 读取文件系统驱动接口:读取单位以sector(扇区)为单位 DRESULT disk_read ( BYTE pdrv, /* Physical drive nmuber to identify the drive */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Start sector in LBA */ ...
C# Class - USB Port Enabled/Disabled Status Detection C# class for JSON is resulting a Null Reference Exception C# code to add and retrieve user photos from active directory C# code to convert an array to DataTable c# code to convert txt to xls file C# code to create a new folder and ...
本模块主要提供管理USB设备的相关功能,包括主设备上查询USB设备列表、批量数据传输、控制命令传输、权限控制等;从设备上端口管理、功能切换及查询等。 说明 本模块首批接口从API version 9开始支持。后续版本的新增接口,采用上角标单独标记接口的起始版本。 导入模块 import usb from "@ohos.usbManager"; u...
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