What is a report descriptor?

What is a report descriptor?

The report descriptor is binary data that specifies the device type and the details of the reports that the device sends and receives. A report is binary data. A report sent from the device to the host computer is called an IN report. A report sent from the host to the device is an OUT report.

What is a USB report?

A USB HID Report Descriptor is requested by a USB host from a USB device. It tells the host how to interpret the report data packets the device sends to it. It includes: How many packets the device supports. Packet sizes.

What is HID report descriptor?

HID Report Descriptor defines the format of each report. Input and Output Reports specify control data and Feature Reports specify configuration data. A device may support more than one report type and more than one report of the same type.

How do I get USB descriptor?

To view the hardware ID of a particular device, open Device Manager and view device properties. In the Details tab, the Hardware Ids property value indicates the hardware ID (“USB\XXX”) that is generated by Windows. The bcdUSB field indicates the version of the USB specification to which the device conforms.

How does USB enumerate?

To complete USB enumeration, the following five steps must be conducted:

1. The host reads the Device Descriptor from the USB device.
2. The host assigns an address for the USB device.
3. The host reads the Configuration Descriptor from the USB device.
4. The host reads the Interface Descriptor from the USB device.

What is the USB report rate?

1000 times per second
Over USB, the base polling rate is usually 125Hz, or once every 8 milliseconds. Most gaming mice, however, typically include a 1000Hz polling rate, once per millisecond, or 1000 times per second.

What is HID mouse?

(Human Interface Device) A class of peripheral devices that enables people to input data or interact directly with the computer, such as with a mouse, keyboard or joystick. The HID specification is a part of the USB standard, thus USB mice and other USB user input devices are HID compliant.

What is USB HID protocol?

In computing, the USB human interface device class (USB HID class) is a part of the USB specification for computer peripherals: it specifies a device class (a type of computer hardware) for human interface devices such as keyboards, mice, game controllers and alphanumeric display devices.

What is USB HID mode?

What is HID enabled? (Human Interface Device) A class of peripheral devices that enables people to input data or interact directly with the computer, such as with a mouse, keyboard or joystick. The HID specification is a part of the USB standard, thus USB mice and other USB user input devices are HID compliant.

How do I fix USB descriptor failure?

How to Fix Device Descriptor Request Failed (Unknown USB device) in Windows 10

• Method 1. Check for hardware issues.
• Method 2. Plug out your power supply.
• Method 3. Uninstall the USB Driver in Device Manager.
• Method 4. Disable the Fast Startup option.
• Method 5. Remove USB and scan for hardware changes.
• Method 6.
• Method 7.