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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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本程序使用2131开发板的按键和七
This Program uses the 2131 dev board s push buttons and seven-segment LED for limited keyboard functionality and is based on the EZ-USB firmware frameworks.
- 2022-05-20 06:05:18下载
- 积分：1
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USB firmware source code, have been debug through. Recommended to download the u...
USB固件程序源码，已调试通过。建议下载用户根据自己的功能进行适当修改。-USB firmware source code, have been debug through. Recommended to download the user according to their own functions with appropriate modifications.
- 2022-08-23 03:52:10下载
- 积分：1
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一个比较小巧的DELPHI安装程序，它比较好用，容易被大家接受!...
一个比较小巧的DELPHI安装程序，它比较好用，容易被大家接受!-a relatively small Delphi installation procedures, it is relatively convenient, easily accepted!
- 2022-07-25 11:16:15下载
- 积分：1
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usb_D12+8051的固件源码.
Keil_C51环境下编译
usb_D12+8051的固件源码.
Keil_C51环境下编译-usb_D12 8051 firmware source. Keil_C51 environment compiler
- 2022-03-18 11:57:47下载
- 积分：1
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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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usb温度控制器DRIVER
usb温度控制器DRIVER-usb temperature controller DRIVER
- 2022-06-02 04:17:37下载
- 积分：1
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USB Mass Storage related Doc.rar
USB Mass Storage related Doc.rar
- 2022-10-05 09:10:03下载
- 积分：1
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PowerPac USB使用手册
PowerPac USB使用手册-PowerPac USB manual. . . . . . . .
- 2022-02-14 22:02:09下载
- 积分：1
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源码程序包，很不错的东西！希望感兴趣的可以下了
源码程序包，很不错的东西！希望感兴趣的可以下了-source package, a very good thing! Interested hope they can look at the ````````````````````````````
- 2022-03-19 11:17:08下载
- 积分：1
