harmony 鸿蒙UsbConfigDescriptor
UsbConfigDescriptor
Overview
Defines standard configuration descriptors, which correspond to Standard Configuration Descriptor in the USB protocol.
Since
10
Related Modules
Summary
Member Variables
| Name | Description |
|---|---|
| bLength | Size of the descriptor, in bytes. |
| bDescriptorType | Descriptor type. |
| wTotalLength | Total length of the configuration descriptor, including the configuration, interface, endpoint, and class- or vendor-specific descriptors. |
| bNumInterfaces | Number of interfaces supported by the configuration. |
| bConfigurationValue | Configuration index, which is used to select the configuration. |
| iConfiguration | Index of the string descriptor that describes the configuration. |
| bmAttributes | Configuration attributes, including the power mode and remote wakeup. |
| bMaxPower | Maximum power consumption of the bus-powered USB device, in 2 mA. |
Member Variable Description
bConfigurationValue
uint8_t UsbConfigDescriptor::bConfigurationValue
Description
Configuration index, which is used to select the configuration.
bDescriptorType
uint8_t UsbConfigDescriptor::bDescriptorType
Description
Descriptor type.
bLength
uint8_t UsbConfigDescriptor::bLength
Description
Size of the descriptor, in bytes.
bmAttributes
uint8_t UsbConfigDescriptor::bmAttributes
Description
Configuration attributes, including the power mode and remote wakeup.
bMaxPower
uint8_t UsbConfigDescriptor::bMaxPower
Description
Maximum power consumption of the bus-powered USB device, in 2 mA.
bNumInterfaces
uint8_t UsbConfigDescriptor::bNumInterfaces
Description
Number of interfaces supported by the configuration.
iConfiguration
uint8_t UsbConfigDescriptor::iConfiguration
Description
Index of the string descriptor that describes the configuration.
wTotalLength
uint16_t UsbConfigDescriptor::wTotalLength
Description
Total length of the configuration descriptor, including the configuration, interface, endpoint, and class- or vendor-specific descriptors.
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