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USB设备
USB设备端固件程序,枚举部分是全部程序的基础和重心,只有主机对设备枚举成功后,主机才能和设备进行正常的通信
USB的枚举过程分为4个状态.
1.接入态
v主机检测到USB设备插上,击活端口,并发送复位命令(保持10ms)
2.默认态
v主机使用默认地址读取设备描述符 (GET_DESCRIPTOR)
v主机分配给设备一个总在线的唯一地址 (SET_ADDRESS)
3.地址态
v主机从新的地址获取设备描述符(GET_DESCRIPTOR)
v主机获取所有设备的配置描述符(GET_DESCRIPTOR)
4.配置态
v主机设置描述符(设备,配置) (SET_CONFIGURATION)
v主机读取配置状态(可选) (GET_CONFIGURATION)
v主机读取接口状态(可选) (GET_INTERFACE)
-USB device-side firmware, enumerate all part of the foundation and focus of the procedure, only the host of equipment after the successful enumeration, the host and equipment in order to engage in normal communication USB enumeration process is divided into four status. 1. Access state v host detected USB devices plug in, hit live ports, and send the reset command (to maintain 10ms) 2. default state v Use the default address of the host to read device descriptor (GET_DESCRIPTOR) v host assigned to the equipment of a total online only Address (SET_ADDRESS) 3. A
- 2022-01-21 17:52:38下载
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一些例子,USB和RS232
some examples of USB to/from RS232
- 2022-03-21 23:09:46下载
- 积分:1
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易于嵌入的USB HOST模块rar 易于嵌入的USB HOST模块rar
易于嵌入的USB HOST模块rar 易于嵌入的USB HOST模块rar-A USB host module for embedded system.
- 2022-05-20 20:06:06下载
- 积分:1
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USBCY68013 examples of procedures, mainly for data communications, this is a fra...
USBCY68013的的事例程序,主要进行数据的通信,这是一个自动安装的驱动框架-USBCY68013 examples of procedures, mainly for data communications, this is a framework to automatically install the driver
- 2023-01-14 20:40:03下载
- 积分:1
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usb HID类设备通讯源程序
usb HID类设备通讯源程序-USB HID source category communications equipment
- 2022-03-03 11:36:14下载
- 积分:1
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usb开发包
usb开发包-usb Development Kit
- 2022-12-28 14:05:08下载
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usb接口编程c++源代码。不是很大,但用处很多,可移植。
usb接口编程c++源代码。不是很大,但用处很多,可移植。-usb interface programming c source code. Not great, but a lot of useful, portable.
- 2022-08-26 14:30:45下载
- 积分:1
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USB系统的设计研究文档,适合USB相关开发的人员阅读。
USB系统的设计研究文档,适合USB相关开发的人员阅读。-USB System Design document, suitable for the development of USB-related staff to read.
- 2022-04-22 04:01:15下载
- 积分:1
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USB d12 驱动
USB d12 驱动-USB Drive
- 2022-05-27 00:17:39下载
- 积分:1
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usb驱动及接口通信的汇编版本
usb驱动及接口通信的汇编版本-usb drive and communication interfaces version of the Compendium
- 2022-07-24 12:34:37下载
- 积分:1