diff --git a/zh-cn/device-dev/subsystems/Readme-CN.md b/zh-cn/device-dev/subsystems/Readme-CN.md index 98e48250028ffbc93a511cd67980b08e9f4586ba..a547550a2e517f8b9daa1868abc72cdb63a0e12b 100644 --- a/zh-cn/device-dev/subsystems/Readme-CN.md +++ b/zh-cn/device-dev/subsystems/Readme-CN.md @@ -50,10 +50,6 @@ - [Sensor服务概述](subsys-sensor-overview.md) - [Sensor服务使用指导](subsys-sensor-guide.md) - [Sensor服务使用实例](subsys-sensor-demo.md) -- USB服务 - - [USB服务概述](subsys-usbservice-overview.md) - - [USB服务使用指导](subsys-usbservice-guide.md) - - [USB服务使用实例](subsys-usbservice-demo.md) - 用户程序框架 - [概述](subsys-application-framework-overview.md) - [搭建环境](subsys-application-framework-envbuild.md) @@ -111,4 +107,4 @@ - [hiperf使用指导](subsys-toolchain-hiperf.md) - 电源管理 - 显示管理 - - [系统亮度范围定制开发指导](subsys-power-brightness-customization.md) \ No newline at end of file + - [系统亮度范围定制开发指导](subsys-power-brightness-customization.md) diff --git a/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md b/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md deleted file mode 100644 index ad6e84ec1ce098166779ea978ed39345448eda09..0000000000000000000000000000000000000000 --- a/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md +++ /dev/null @@ -1,187 +0,0 @@ -# USB服务子系统使用实例 - - -```cpp -#include -#include -#include -#include -#include -#include -#include "if_system_ability_manager.h" -#include "ipc_skeleton.h" -#include "iremote_object.h" -#include "iservice_registry.h" -#include "iusb_srv.h" -#include "string_ex.h" -#include "system_ability_definition.h" -#include "usb_common.h" -#include "usb_device.h" -#include "usb_errors.h" -#include "usb_request.h" -#include "usb_server_proxy.h" -#include "usb_srv_client.h" - -const int32_t REQUESTYPE = ((1 << 7) | (0 << 5) | (0 & 0x1f)); -const int32_t REQUESTCMD = 6; -const int32_t VALUE = (2 << 8) + 0; -const int32_t TIMEOUT = 5000; -const int32_t ITFCLASS = 10; -const int32_t PRAMATYPE = 2; -const int32_t BUFFERLENGTH = 21; - -void GetType(OHOS::USB::USBEndpoint &tep, OHOS::USB::USBEndpoint &outEp, bool &outEpFlg) -{ - if ((tep.GetType() == PRAMATYPE)) { - if (tep.GetDirection() == 0) { - outEp = tep; - outEpFlg = true; - } - } -} - -bool SelectEndpoint(OHOS::USB::USBConfig config, - std::vector interfaces, - OHOS::USB::UsbInterface &interface, - OHOS::USB::USBEndpoint &outEp, - bool &outEpFlg) -{ - for (int32_t i = 0; i < config.GetInterfaceCount(); ++i) { - OHOS::USB::UsbInterface tif = interfaces[i]; - std::vector mEndpoints = tif.GetEndpoints(); - for (int32_t j = 0; j < tif.GetEndpointCount(); ++j) { - OHOS::USB::USBEndpoint tep = mEndpoints[j]; - if ((tif.GetClass() == ITFCLASS) && (tif.GetSubClass() == 0) && (tif.GetProtocol() == PRAMATYPE)) { - GetType(tep, outEp, outEpFlg); - } - } - if (outEpFlg) { - interface = interfaces[i]; - return true; - } - std::cout << std::endl; - } - return false; -} - -int OpenDeviceTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::UsbDevice device, OHOS::USB::USBDevicePipe &pip) -{ - int ret = Instran.RequestRight(device.GetName()); - std::cout << "device RequestRight ret = " << ret << std::endl; - if (0 != ret) { - std::cout << "device RequestRight failed = " << ret << std::endl; - } - ret = Instran.OpenDevice(device, pip); - return ret; -} - -int CtrTransferTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::USBDevicePipe &pip) -{ - std::cout << "usb_device_test : << Control Transfer >> " << std::endl; - std::vector vData; - const OHOS::USB::UsbCtrlTransfer tctrl = {REQUESTYPE, REQUESTCMD, VALUE, 0, TIMEOUT}; - int ret = Instran.ControlTransfer(pip, tctrl, vData); - if (ret != 0) { - std::cout << "control message read failed width ret = " << ret << std::endl; - } else { - } - std::cout << "control message read success" << std::endl; - - return ret; -} - -int ClaimTest(OHOS::USB::UsbSrvClient &Instran, - OHOS::USB::USBDevicePipe &pip, - OHOS::USB::UsbInterface &interface, - bool interfaceFlg) -{ - if (interfaceFlg) { - std::cout << "ClaimInterface InterfaceInfo:" << interface.ToString() << std::endl; - int ret = Instran.ClaimInterface(pip, interface, true); - if (ret != 0) { - std::cout << "ClaimInterface failed width ret = " << ret << std::endl; - } else { - std::cout << "ClaimInterface success" << std::endl; - } - } - return 0; -} - -int BulkTransferTest(OHOS::USB::UsbSrvClient &Instran, - OHOS::USB::USBDevicePipe &pip, - OHOS::USB::USBEndpoint &outEp, - bool interfaceFlg, - bool outEpFlg) -{ - if (interfaceFlg) { - std::cout << "usb_device_test : << Bulk transfer start >> " << std::endl; - if (outEpFlg) { - uint8_t buffer[50] = "hello world 123456789"; - std::vector vData(buffer, buffer + BUFFERLENGTH); - int ret = Instran.BulkTransfer(pip, outEp, vData, TIMEOUT); - if (ret != 0) { - std::cout << "Bulk transfer write failed width ret = " << ret << std::endl; - } else { - std::cout << "Bulk transfer write success" << std::endl; - } - return ret; - } - } - return 0; -} - -int main(int argc, char **argv) -{ - std::cout << "usb_device_test " << std::endl; - static OHOS::USB::UsbSrvClient &Instran = OHOS::USB::UsbSrvClient::GetInstance(); - // GetDevices - std::vector deviceList; - int32_t ret = Instran.GetDevices(deviceList); - if (ret != 0) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - if (deviceList.empty()) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - - OHOS::USB::UsbDevice device = deviceList[0]; - std::vector configs = device.GetConfigs(); - OHOS::USB::USBConfig config = configs[0]; - std::vector interfaces = config.GetInterfaces(); - OHOS::USB::UsbInterface interface; - OHOS::USB::USBEndpoint outEp; - bool interfaceFlg = false; - bool outEpFlg = false; - interfaceFlg = SelectEndpoint(config, interfaces, interface, outEp, outEpFlg); - - // OpenDevice - std::cout << "usb_device_test : << OpenDevice >> test begin -> " << std::endl; - OHOS::USB::USBDevicePipe pip; - ret = OpenDeviceTest(Instran, device, pip); - if (ret != 0) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - - // ControlTransfer - CtrTransferTest(Instran, pip); - - // ClaimInterface - ClaimTest(Instran, pip, interface, interfaceFlg); - - // BulkTransferWrite - BulkTransferTest(Instran, pip, outEp, interfaceFlg, outEpFlg); - - // CloseDevice - std::cout << "usb_device_test : << Close Device >> " << std::endl; - ret = Instran.Close(pip); - if (ret == 0) { - std::cout << "Close device failed width ret = " << ret << std::endl; - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } else { - std::cout << "Close Device success" << std::endl; - } - return 0; -} -``` - - diff --git a/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md b/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md deleted file mode 100644 index ea46f8f7e445897feb58684f702ef578e466a8f8..0000000000000000000000000000000000000000 --- a/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md +++ /dev/null @@ -1,51 +0,0 @@ -# USB服务子系统使用指导 - - -下面使用步骤以bulktransfer为例。 - -使用步骤 - -1. 获取usb service实例 - - ```cpp - static OHOS::USB::UsbSrvClient &g_usbClient = OHOS::USB::UsbSrvClient::GetInstance(); - ``` - -2. 获取usb设备列表 - - ```cpp - std::vector deviceList; - int32_t ret = g_usbClient.GetDevices(deviceList); - ``` - -3. 申请设备权限 - - ```cpp - int32_t ret = g_usbClient.RequestRight(device.GetName()); - ``` - -4. 打开设备 - - ```cpp - USBDevicePipe pip; - int32_t et = g_usbClient.OpenDevice(device, pip); - ``` - -5. 配置设备接口 - - ```cpp - ret = g_usbClient.ClaimInterface(pip, interface, true); //interface为deviceList中device的interface。 - ``` - -6. 数据传输 - - ```cpp - srvClient.BulkTransfer(pipe, endpoint, vdata, timeout); - ``` - pipe为打开设备后的数据传输通道，endpoint为device中数据传输的端点，vdata是需要传输或读取的二进制数据块，timeout为传输超时时长。 - -7. 关闭设备 - - ```cpp - ret = g_usbClient.Close(pip); - ``` diff --git a/zh-cn/device-dev/subsystems/subsys-usbservice-overview.md b/zh-cn/device-dev/subsystems/subsys-usbservice-overview.md deleted file mode 100644 index d3bf8b07e67ce76f23a2b66a6add3887cbe522cf..0000000000000000000000000000000000000000 --- a/zh-cn/device-dev/subsystems/subsys-usbservice-overview.md +++ /dev/null @@ -1,338 +0,0 @@ -# USB服务 - -## 概述 - -### 功能简介 - -USB设备分为Host设备（主机设备）和Device设备（从设备）。用户可通过Port Service来根据实际业务把运行OpenHarmony的设备切换为Host设备或者Device设备。目前在Host模式下，支持获取USB设备列表，USB设备权限管理，控制传输、批量传输的同异步数据传输等，在Device模式下，支持HDC（调试）、ACM（串口）、ECM（网口）等功能的切换。 - -### 基本概念 - -- USB服务 - - USB服务是应用访问底层的一种设备抽象概念。开发者根据提供的USB API，可以获取设备列表、控制设备访问权限、以及与连接的设备进行数据传输、控制命令传输等。 - -- USB API - - 基于USB Service服务，使用NAPI技术，向上提供JS接口。提供USB的基础API，主要包含查询USB设备的列表、设备插拔通知、USB HOST/DEVICE 功能切换、批量数据传输、控制命令传输、USB设备打开的权限控制及USB device模式下的function功能切换等。 - -- USB Service - - 使用C++代码实现，包含Host、Device、Port、Right四个模块。基于HDI接口，主要实现USB设备列表管理、Function 管理、Port管理、USB设备权限管理等功能。主要实现HAL层数据接收、解析、分发，前后台的策略管控，对该设备USB的管理，USB权限管控等。 - -- USB HAL - - 使用C代码实现，基于Host DDK(Driver Develop Kit)和Device DDK，封装了对USB设备的基本操作，向上提供C++接口，同时通过HDF框架接收内核上报的信息。 - -### 运作机制 - -USB服务系统包含USB API、USB Service、USB HAL。 - - **图1** USB服务架构图 - ![zh-cn_image_0000001267088285](figures/zh-cn_image_0000001267088285.png) - -- USB API：提供USB的基础API，主要包含查询USB设备列表、批量数据传输、控制命令传输、权限控制等。 - -- USB Service：主要实现HAL层数据的接收、解析、分发，前后台的策略管控以及对设备的管理等。 - -- USB HAL层：提供给用户态可直接调用的驱动能力接口。 - -## 使用指导 - -### 场景介绍 - -Host模式下，可以获取到已经连接的设备列表，并根据需要打开和关闭设备、控制设备权限、进行数据传输等。 - -### 接口说明 - - **表1** Host部分 - -| 接口名称 | 功能描述 | -| ------------------------------------------------------------ | ------------------------------------------------------------ | -| int32_t OpenDevice(const UsbDevice &device, USBDevicePipe &pip); | 打开USB设备，建立连接 | -| bool HasRight(std::string deviceName); | 判断是否有权访问设备 | -| int32_t RequestRight(std::string deviceName); | 请求给定软件包的临时权限以访问设备 | -| int32_t GetDevices(std::vector &deviceList); | 获取USB设备列表 | -| int32_t ClaimInterface(USBDevicePipe &pip, const UsbInterface &interface, bool force); | 打开接口，并申明独占接口，必须在数据传输前执行 | -| int32_t ReleaseInterface(USBDevicePipe &pip, const UsbInterface &interface); | 关闭接口，释放接口的占用，在停止数据传输后执行 | -| int32_t BulkTransfer(USBDevicePipe &pip, const USBEndpoint &endpoint, std::vector &vdata, int32_t timeout); | 在给定端点上执行批量数据传输， 返回读取或发送的数据长度，通过端点方向确定读取或发送数据 | -| int32_t ControlTransfer(USBDevicePipe &pip, const UsbCtrlTransfer &ctrl, std::vector &vdata); | 对此设备执行端点零的控制事务，传输方向由请求类型决定 | -| int32_t SetConfiguration(USBDevicePipe &pip, const USBConfig &config); | 设置设备当前使用的配置，通过配置值进行指定 | -| int32_t SetInterface(USBDevicePipe &pipe, const UsbInterface &interface); | 设置指定接口的备选设置，用于在具有相同ID但不同备用设置的两个接口之间进行选择 | -| int32_t GetRawDescriptors(std::vector &vdata); | 获取原始的USB描述符 | -| int32_t GetFileDescriptor(); | 获取文件描述符 | -| bool Close(const USBDevicePipe &pip); | 关闭设备，释放与设备相关的所有系统资源 | -| int32_t PipeRequestWait(USBDevicePipe &pip, int64_t timeout, UsbRequest &req); | 获取异步传输结果 | -| int32_t RequestInitialize(UsbRequest &request); | 初始化异步数据传输request | -| int32_t RequestFree(UsbRequest &request); | 释放异步数据传输request | -| int32_t RequestAbort(UsbRequest &request); | 取消待处理的数据请求 | -| int32_t RequestQueue(UsbRequest &request); | 将指定的端点进行异步数据发送或者接收请求，数据传输方向由端点方向决定 | -| int32_t RegBulkCallback(USBDevicePipe &pip, const USBEndpoint &endpoint, const sptr &cb); | 注册批量传输异步回调函数 | -| int32_t UnRegBulkCallback(USBDevicePipe &pip, const USBEndpoint &endpoint); | 注销批量传输异步回调函 | -| int32_t BulkRead(USBDevicePipe &pip, const USBEndpoint &endpoint, sptr &ashmem); | 批量传输异步读数据 | -| int32_t BulkWrite(USBDevicePipe &pip, const USBEndpoint &endpoint, sptr &ashmem); | 批量传输异步写 | -| int32_t BulkCancel(USBDevicePipe &pip, const USBEndpoint &endpoint); | 批量传输异步取消接口，用于取消当前接口的异步批量读写操作 | - - **表2** Device部分 - -| 接口名称 | 功能描述 | -| -------------------------------------------------- | ------------------------------------------------------ | -| int32_t GetCurrentFunctions(int32_t &funcs); | 获取设备模式下的当前USB功能列表的数字组合掩码 | -| int32_t SetCurrentFunctions(int32_t funcs); | 在设备模式下设置当前的USB功能列表 | -| int32_t UsbFunctionsFromString(std::string funcs); | 将给定的功能列表描述字符串转换为功能列表的数字组合掩码 | -| std::string UsbFunctionsToString(int32_t funcs); | 将给定的功能列表的数字组合掩码转换为功能列表描述字符串 | - - **表3** Port部分 - -| 接口名称 | 功能描述 | -| ------------------------------------------------------------ | -------------------------------------------------------- | -| int32_t GetSupportedModes(int32_t portId, int32_t &supportedModes); | 获取指定的端口支持的模式列表的组合掩码 | -| int32_t SetPortRole(int32_t portId, int32_t powerRole, int32_t dataRole); | 设置指定的端口支持的角色模式，包含充电角色、数据传输角色 | -| int32_t GetPorts(std::vector &usbPorts); | 获取物理USB端口描述信息列表 | - -### USB服务子系统使用步骤 - -以bulktransfer为例。 - -1. 获取usb service实例。 - - ```cpp - static OHOS::USB::UsbSrvClient &g_usbClient = OHOS::USB::UsbSrvClient::GetInstance(); - ``` - -2. 获取usb设备列表。 - - ```cpp - std::vector deviceList; - int32_t ret = g_usbClient.GetDevices(deviceList); - ``` - -3. 申请设备权限。 - - ```cpp - int32_t ret = g_usbClient.RequestRight(device.GetName()); - ``` - -4. 打开设备。 - - ```cpp - USBDevicePipe pip; - int32_t et = g_usbClient.OpenDevice(device, pip); - ``` - -5. 配置设备接口。 - - ```cpp - //interface为deviceList中device的interface。 - ret = g_usbClient.ClaimInterface(pip, interface, true); - ``` - -6. 数据传输。 - - ```cpp - // pipe为打开设备后的数据传输通道，endpoint为device中数据传输的端点，vdata是需要传输或读取的二进制数据块，timeout为传输超时时长。 - srvClient.BulkTransfer(pipe, endpoint, vdata, timeout); - ``` - -7. 关闭设备。 - - ```cpp - ret = g_usbClient.Close(pip); - ``` - -### USB服务子系统使用实例 - -```cpp -#include -#include -#include -#include -#include -#include -#include "if_system_ability_manager.h" -#include "ipc_skeleton.h" -#include "iremote_object.h" -#include "iservice_registry.h" -#include "iusb_srv.h" -#include "string_ex.h" -#include "system_ability_definition.h" -#include "usb_common.h" -#include "usb_device.h" -#include "usb_errors.h" -#include "usb_request.h" -#include "usb_server_proxy.h" -#include "usb_srv_client.h" - -const int32_t REQUESTYPE = ((1 << 7) | (0 << 5) | (0 & 0x1f)); -const int32_t REQUESTCMD = 6; -const int32_t VALUE = (2 << 8) + 0; -const int32_t TIMEOUT = 5000; -const int32_t ITFCLASS = 10; -const int32_t PRAMATYPE = 2; -const int32_t BUFFERLENGTH = 21; - -void GetType(OHOS::USB::USBEndpoint &tep, OHOS::USB::USBEndpoint &outEp, bool &outEpFlg) -{ - if ((tep.GetType() == PRAMATYPE)) { - if (tep.GetDirection() == 0) { - outEp = tep; - outEpFlg = true; - } - } -} - -bool SelectEndpoint(OHOS::USB::USBConfig config, - std::vector interfaces, - OHOS::USB::UsbInterface &interface, - OHOS::USB::USBEndpoint &outEp, - bool &outEpFlg) -{ - for (int32_t i = 0; i < config.GetInterfaceCount(); ++i) { - OHOS::USB::UsbInterface tif = interfaces[i]; - std::vector mEndpoints = tif.GetEndpoints(); - for (int32_t j = 0; j < tif.GetEndpointCount(); ++j) { - OHOS::USB::USBEndpoint tep = mEndpoints[j]; - if ((tif.GetClass() == ITFCLASS) && (tif.GetSubClass() == 0) && (tif.GetProtocol() == PRAMATYPE)) { - GetType(tep, outEp, outEpFlg); - } - } - if (outEpFlg) { - interface = interfaces[i]; - return true; - } - std::cout << std::endl; - } - return false; -} - -int OpenDeviceTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::UsbDevice device, OHOS::USB::USBDevicePipe &pip) -{ - int ret = Instran.RequestRight(device.GetName()); - std::cout << "device RequestRight ret = " << ret << std::endl; - if (0 != ret) { - std::cout << "device RequestRight failed = " << ret << std::endl; - } - ret = Instran.OpenDevice(device, pip); - return ret; -} - -int CtrTransferTest(OHOS::USB::UsbSrvClient &Instran, OHOS::USB::USBDevicePipe &pip) -{ - std::cout << "usb_device_test : << Control Transfer >> " << std::endl; - std::vector vData; - const OHOS::USB::UsbCtrlTransfer tctrl = {REQUESTYPE, REQUESTCMD, VALUE, 0, TIMEOUT}; - int ret = Instran.ControlTransfer(pip, tctrl, vData); - if (ret != 0) { - std::cout << "control message read failed width ret = " << ret << std::endl; - } else { - } - std::cout << "control message read success" << std::endl; - - return ret; -} - -int ClaimTest(OHOS::USB::UsbSrvClient &Instran, - OHOS::USB::USBDevicePipe &pip, - OHOS::USB::UsbInterface &interface, - bool interfaceFlg) -{ - if (interfaceFlg) { - std::cout << "ClaimInterface InterfaceInfo:" << interface.ToString() << std::endl; - int ret = Instran.ClaimInterface(pip, interface, true); - if (ret != 0) { - std::cout << "ClaimInterface failed width ret = " << ret << std::endl; - } else { - std::cout << "ClaimInterface success" << std::endl; - } - } - return 0; -} - -int BulkTransferTest(OHOS::USB::UsbSrvClient &Instran, - OHOS::USB::USBDevicePipe &pip, - OHOS::USB::USBEndpoint &outEp, - bool interfaceFlg, - bool outEpFlg) -{ - if (interfaceFlg) { - std::cout << "usb_device_test : << Bulk transfer start >> " << std::endl; - if (outEpFlg) { - uint8_t buffer[50] = "hello world 123456789"; - std::vector vData(buffer, buffer + BUFFERLENGTH); - int ret = Instran.BulkTransfer(pip, outEp, vData, TIMEOUT); - if (ret != 0) { - std::cout << "Bulk transfer write failed width ret = " << ret << std::endl; - } else { - std::cout << "Bulk transfer write success" << std::endl; - } - return ret; - } - } - return 0; -} - -int main(int argc, char **argv) -{ - std::cout << "usb_device_test " << std::endl; - static OHOS::USB::UsbSrvClient &Instran = OHOS::USB::UsbSrvClient::GetInstance(); - // GetDevices - std::vector deviceList; - int32_t ret = Instran.GetDevices(deviceList); - if (ret != 0) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - if (deviceList.empty()) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - - OHOS::USB::UsbDevice device = deviceList[0]; - std::vector configs = device.GetConfigs(); - OHOS::USB::USBConfig config = configs[0]; - std::vector interfaces = config.GetInterfaces(); - OHOS::USB::UsbInterface interface; - OHOS::USB::USBEndpoint outEp; - bool interfaceFlg = false; - bool outEpFlg = false; - interfaceFlg = SelectEndpoint(config, interfaces, interface, outEp, outEpFlg); - - // OpenDevice - std::cout << "usb_device_test : << OpenDevice >> test begin -> " << std::endl; - OHOS::USB::USBDevicePipe pip; - ret = OpenDeviceTest(Instran, device, pip); - if (ret != 0) { - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } - - // ControlTransfer - CtrTransferTest(Instran, pip); - - // ClaimInterface - ClaimTest(Instran, pip, interface, interfaceFlg); - - // BulkTransferWrite - BulkTransferTest(Instran, pip, outEp, interfaceFlg, outEpFlg); - - // CloseDevice - std::cout << "usb_device_test : << Close Device >> " << std::endl; - ret = Instran.Close(pip); - if (ret == 0) { - std::cout << "Close device failed width ret = " << ret << std::endl; - return OHOS::USB::UEC_SERVICE_INVALID_VALUE; - } else { - std::cout << "Close Device success" << std::endl; - } - return 0; -} -``` - -### 参考手册 - -[驱动子系统](https://gitee.com/openharmony/docs/blob/master/zh-cn/readme/%E9%A9%B1%E5%8A%A8%E5%AD%90%E7%B3%BB%E7%BB%9F.md) - -[drivers\_peripheral](https://gitee.com/openharmony/drivers_peripheral/blob/master/README_zh.md) - -[drivers\_framework](https://gitee.com/openharmony/drivers_framework/blob/master/README_zh.md) - -[drivers\_adapter](https://gitee.com/openharmony/drivers_adapter/blob/master/README_zh.md) - -[drivers\_adapter\_khdf\_linux](https://gitee.com/openharmony/drivers_adapter_khdf_linux/blob/master/README_zh.md) \ No newline at end of file