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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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USB固件程序,文件系统,USB2.0其它
USB固件程序,文件系统,USB2.0其它-USB firmware, file system, USB2.0 other
- 2022-09-24 02:45:03下载
- 积分:1
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PDIUSBD12固件编程指南
PDIUSBD12固件编程指南-PDIUSBD12 firmware Programming Guide
- 2023-07-11 07:45:03下载
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PCusb,一个读取串口原程序,VC++6.0
PCusb,一个读取串口原程序,VC++6.0-PCusb, a serial port to read the original procedure, VC++ 6.0
- 2022-03-25 09:45:40下载
- 积分:1
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Sunplus SPCA5xx decoder chip USB driver, reference only, not for commercial usag...
凌阳SPCA5XX解码芯片USB驱动源代码,仅供参考,请不要用于商业用途。-Sunplus SPCA5xx decoder chip USB driver, reference only, not for commercial usage.
- 2022-06-12 12:22:00下载
- 积分:1
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USB transfer files example
USB传输文件实例-USB transfer files example
- 2022-08-12 22:27:33下载
- 积分:1
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CY7C68013控制AD5933进行测温度。点击BULKLOOP.UV2生成HEX文件用USB下载。...
CY7C68013控制AD5933进行测温度。点击BULKLOOP.UV2生成HEX文件用USB下载。-CY7C68013 control for measuring the temperature AD5933. Click BULKLOOP.UV2 generated HEX file download by USB.
- 2022-12-03 22:40:03下载
- 积分:1
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将X插入到顺序表的适当位置,以保持该表的有序性
将X插入到顺序表的适当位置,以保持该表的有序性-X inserted into the order form in the appropriate place in order to maintain the orderly nature of the table
- 2022-02-12 21:47:04下载
- 积分:1
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USBView
usbview设备驱动程序开发-USBView- device driver development.
- 2023-01-09 15:35:05下载
- 积分:1
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USB1.1中文协议
USB1.1中文协议-USB Protocol V1.1 for Chinese
- 2022-02-05 04:41:04下载
- 积分:1