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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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本程序演示了如何利用编写高层应用程序与USB接口通信。读者有必要了解主机是如何识别USB设备以及USB工作的基本原理。...
本程序演示了如何利用编写高层应用程序与USB接口通信。读者有必要了解主机是如何识别USB设备以及USB工作的基本原理。-this program demonstrated how to use the preparation of high-level applications and USB communication. Readers need to understand is how to identify host USB and USB devices to the basic tenets.
- 2022-11-19 06:50:03下载
- 积分:1
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数据采集程序,采用同步模式,包括主机程序,固件源程序,驱动程序。出自《USB2.0原理与工程开发》我现在需要USB键盘方面的源程序,如果你有请提供crzman@...
数据采集程序,采用同步模式,包括主机程序,固件源程序,驱动程序。出自《USB2.0原理与工程开发》我现在需要USB键盘方面的源程序,如果你有请提供crzman@163.com-data collection procedures, using the synchronization mode, including mainframe procedures, firmware source, the driver. From "USB2.0 Principle and the development of the project," I now need a USB keyboard aspects of the source, If you please provide crzman@163.com
- 2022-02-01 04:20:27下载
- 积分:1
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网上收集的利用nios软核,使用isp1362芯片开发的u盘程序,有助于usb开发的理解和ufi协议的理解。已经验证,完全可用xp自带驱动。...
网上收集的利用nios软核,使用isp1362芯片开发的u盘程序,有助于usb开发的理解和ufi协议的理解。已经验证,完全可用xp自带驱动。-Collected online using Nios soft-core, use isp1362 chip development process u disk, usb help develop the understanding and agreement ufi understanding. Has been verified, fully available to bring their own driver xp.
- 2023-06-02 11:10:03下载
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usb device test Speed
usb device test Speed
- 2022-02-07 13:31:44下载
- 积分:1
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一个简单的USB键盘驱动程序
一个简单的usb键盘驱动-a simple USB Keyboard Driver
- 2022-07-16 23:41:52下载
- 积分:1
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usb host mainframe development of the master's thesis 2
usb host 主机开发的硕士论文2-usb host mainframe development of the master"s thesis 2
- 2023-06-28 03:15:04下载
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usb的程序与编程,很不错的,bulk和同步传输。
usb的程序与编程,很不错的,bulk和同步传输。-usb procedures and programming, very good, the bulk transmission and synchronization.
- 2022-08-09 22:05:51下载
- 积分:1
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keyword:usb host sl8
keyword:usb host sl8
- 2022-03-20 18:56:43下载
- 积分:1
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usb otg 技术规范
usb otg 技术规范-USB otg technical specifications
- 2022-01-25 15:45:12下载
- 积分:1