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| author | sakumisu <[email protected]> | 2022-03-08 12:39:41 +0800 |
|---|---|---|
| committer | sakumisu <[email protected]> | 2022-03-08 12:39:41 +0800 |
| commit | b8d1fd6b658a3673adc7fb46284eae0e17b4c9bb (patch) | |
| tree | 55a28ab93ed07523f2955d83082714a94dfcbd27 /docs/source/api/api_host.rst | |
| parent | 5772d29f14eef3462982c3a71a7d20eacc2648fa (diff) | |
update doc structure,hosting with readdoc
Diffstat (limited to 'docs/source/api/api_host.rst')
| -rw-r--r-- | docs/source/api/api_host.rst | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/docs/source/api/api_host.rst b/docs/source/api/api_host.rst new file mode 100644 index 00000000..fdee2c18 --- /dev/null +++ b/docs/source/api/api_host.rst @@ -0,0 +1,161 @@ +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 +-----------------
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