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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
- 积分：1
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HomePNA的Usb网卡驱动，（Ndis_WDM(USB)）仅提供框架，设备配置部分删除，有注释。...
HomePNA的Usb网卡驱动，（Ndis_WDM(USB)）仅提供框架，设备配置部分删除，有注释。-HomePNA the Usb network adapter driver, (Ndis_WDM (USB)) only provide the framework, part of the deletion of equipment, there are notes.
- 2022-03-18 11:16:43下载
- 积分：1
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一个linux下的usb接口源代码
一个linux下的usb接口源代码-a linux usb interface of the source code
- 2022-12-14 04:55:03下载
- 积分：1
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USB主机
usb host
- 2022-07-24 03:37:57下载
- 积分：1
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mp3设计程序资料，采用c语言编写。
README file for
yampp
mp3设计程序资料，采用c语言编写。
README file for
yampp-3 source code 2001-05-27
This is the current state of the yampp-3 source code, 2001-05-27.
This code is intended to run on Rev. B of the yampp-3 PCB, but can
ofcourse be used on compatible systems as well.
It still uses the "old" song selection system as the yampp-2.
However, the disk handling routines has improved a lot and the
obviosly, the new VS1001 handling has been put in.
The codesize is almost at it s maximum at 1F40 bytes.
A .ROM file is included if you don t have the compiler set up.
For now, the documentation is in the code- mp3 programming cook book in C. README file for yampp-3 source code 2001-05-27 This is the current state of the yampp-3 source code, 2001-05-27. This code is intended to run on Rev. B of the yampp-3 PCB, but can ofcourse be used on compatible systems as well. It still uses the "old" song selection system as the yampp-2. However, the disk handling routines has impr
- 2022-06-26 07:41:12下载
- 积分：1
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usb协议的深层剖析,对usb协议的详细解释
usb协议的深层剖析,对usb协议的详细解释-A deep anatomy and detail explanation for USB protocol.
- 2022-04-19 15:22:49下载
- 积分：1
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usb hid devices on the site from abroad
usb hid 设备
来自国外网站上的-usb hid devices on the site from abroad
- 2022-03-17 09:01:10下载
- 积分：1
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USB的具体细节和他的使用方法还有接口电路设计
USB的具体细节和他的使用方法还有接口电路设计-USB
- 2022-06-28 05:56:44下载
- 积分：1
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CYPRESS CY7C69013A使用的驱动！
CYPRESS CY7C69013A使用的驱动！-CYPRESS CY7C69013A driver to use!
- 2022-11-26 10:25:03下载
- 积分：1
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一个关于usb编程的源码
一个关于usb编程的源码-A source on the usb programming
- 2023-06-01 02:45:02下载
- 积分：1
