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authorsakumisu <[email protected]>2022-03-08 12:39:41 +0800
committersakumisu <[email protected]>2022-03-08 12:39:41 +0800
commitb8d1fd6b658a3673adc7fb46284eae0e17b4c9bb (patch)
tree55a28ab93ed07523f2955d83082714a94dfcbd27 /docs/source/api/api_host.rst
parent5772d29f14eef3462982c3a71a7d20eacc2648fa (diff)
update doc structure,hosting with readdoc
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+主机协议栈
+=========================
+
+CORE
+-----------------
+
+CLASS 驱动信息结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ struct usbh_class_info {
+ uint8_t class; /* Base device class code */
+ uint8_t subclass; /* Sub-class, depends on base class. Eg. */
+ uint8_t protocol; /* Protocol, depends on base class. Eg. */
+ uint16_t vid; /* Vendor ID (for vendor/product specific devices) */
+ uint16_t pid; /* Product ID (for vendor/product specific devices) */
+ const struct usbh_class_driver *class_driver;
+ };
+
+端点结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ typedef struct usbh_endpoint {
+ struct usb_endpoint_descriptor ep_desc;
+ } usbh_endpoint_t;
+
+接口结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ typedef struct usbh_interface {
+ struct usb_interface_descriptor intf_desc;
+ struct usbh_endpoint ep[CONFIG_USBHOST_EP_NUM];
+ char devname[CONFIG_USBHOST_DEV_NAMELEN];
+ struct usbh_class_driver *class_driver;
+ void *priv;
+ } usbh_interface_t;
+
+
+配置结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ typedef struct usbh_configuration {
+ struct usb_configuration_descriptor config_desc;
+ struct usbh_interface intf[CONFIG_USBHOST_INTF_NUM];
+ } usbh_configuration_t;
+
+hubport 结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ typedef struct usbh_hubport {
+ bool connected; /* True: device connected; false: disconnected */
+ bool port_change; /* True: port changed; false: port do not change */
+ uint8_t port; /* Hub port index */
+ uint8_t dev_addr; /* device address */
+ uint8_t speed; /* device speed */
+ usbh_epinfo_t ep0; /* control ep info */
+ struct usb_device_descriptor device_desc;
+ struct usbh_configuration config;
+ #if 0
+ uint8_t* config_desc;
+ #endif
+ struct usb_setup_packet *setup;
+ struct usbh_hub *parent; /*if NULL, is roothub*/
+ } usbh_hubport_t;
+
+hub 结构体
+""""""""""""""""""""""""""""""""""""
+
+.. code-block:: C
+
+ typedef struct usbh_hub {
+ usb_slist_t list;
+ uint8_t index; /* Hub index */
+ uint8_t nports; /* Hub port number */
+ uint8_t dev_addr; /* Hub device address */
+ usbh_epinfo_t intin;
+ uint8_t *int_buffer;
+ struct hub_port_status *port_status;
+ struct usb_hub_descriptor hub_desc;
+ struct usbh_hubport child[CONFIG_USBHOST_EHPORTS];
+ struct usbh_hubport *parent; /* Parent hub port */
+ struct usb_work work;
+ } usbh_hub_t;
+
+usbh_event_notify_handler
+""""""""""""""""""""""""""""""""""""
+
+``usbh_event_notify_handler`` 是 USB 中断中的核心,用于处理不同的中断标志。包括复位、端点0 IN/OUT/SETUP、其他端点 IN/OUT 、SUSPEND、RESUME、SOF 中断等等。用于需要在 porting 接口中的 USB中断中调用该接口。
+
+.. code-block:: C
+
+ void usbh_event_notify_handler(uint8_t event, uint8_t rhport);
+
+- **event** 中断事件
+- **rhport** roothub 端口号
+
+其中 ``event`` 有如下类型:
+
+.. code-block:: C
+
+ enum usbh_event_type {
+ USBH_EVENT_ATTACHED,
+ USBH_EVENT_REMOVED,
+ };
+
+usbh_initialize
+""""""""""""""""""""""""""""""""""""
+
+``usbh_initialize`` 用来初始化 usb 主机协议栈,包括:创建插拔检测用的信号量和枚举线程、高低工作队列、初始化 roothub端点0 配置,初始化 usb 主机控制器。
+
+.. code-block:: C
+
+ int usbh_initialize(void);
+
+usbh_find_class_instance
+""""""""""""""""""""""""""""""""""""
+
+``usbh_find_class_instance`` 根据注册的 class 名称查找对应的 class 结构体句柄。
+
+.. code-block:: C
+
+ void *usbh_find_class_instance(const char *devname);
+
+- **devname** class 名称
+- **return** class 结构体句柄
+
+lsusb
+""""""""""""""""""""""""""""""""""""
+
+``lsusb`` 用来查看和操作 hub 上的设备信息。需要借助 shell 插件使用。
+
+.. code-block:: C
+
+ int lsusb(int argc, char **argv);
+
+CDC ACM
+-----------------
+
+HID
+-----------------
+
+MSC
+-----------------
+
+UAC
+-----------------
+
+UVC
+-----------------
+
+PORTING
+----------------- \ No newline at end of file