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more comments, add Milliamperes type.

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This commit is contained in:
Sebastian Zagrodzki
2017-04-09 18:15:48 +02:00
parent e6f6a4f76e
commit af00028b97
2 changed files with 40 additions and 9 deletions
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47
usb/config.go
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@@ -21,7 +21,7 @@ import (
"time"
)
// EndpointInfo contains the information about an interface endpoint, collected
// EndpointInfo contains the information about an interface endpoint, extracted
// from the descriptor.
type EndpointInfo struct {
// Number represents the endpoint number. Note that the endpoint number is different from the
@@ -44,6 +44,7 @@ type EndpointInfo struct {
UsageType UsageType
}
// String returns the human-readable description of the endpoint.
func (e EndpointInfo) String() string {
ret := make([]string, 0, 3)
ret = append(ret, fmt.Sprintf("Endpoint #%d %s (address 0x%02x) %s", e.Number, e.Direction, uint8(e.Number)|uint8(e.Direction), e.TransferType))
@@ -57,35 +58,63 @@ func (e EndpointInfo) String() string {
return strings.Join(ret, " ")
}
// InterfaceInfo contains information about a USB interface, extracted from
// the descriptor.
type InterfaceInfo struct {
// Number is the number of this interface, a zero-based index in the array
// of interfaces supported by the device configuration.
Number uint8
// Setups is a list of alternate settings supported by the interface.
Setups []InterfaceSetup
}
// String returns a human-readable descripton of the interface and it's
// alternate settings.
func (i InterfaceInfo) String() string {
return fmt.Sprintf("Interface %02x (%d setups)", i.Number, len(i.Setups))
return fmt.Sprintf("Interface %02x (%d alternate settings)", i.Number, len(i.Setups))
}
// InterfaceSetup contains information about a USB interface with a particular
// alternate setting, extracted from the descriptor.
type InterfaceSetup struct {
Number uint8
Alternate uint8
IfClass Class
// Number is the number of this interface, the same as in InterfaceInfo.
Number uint8
// Alternate is the number of the alternate setting.
Alternate uint8
// IfClass is the USB-IF class code, as defined by the USB spec.
IfClass Class
// IfClass is the USB-IF subclass code, as defined by the USB spec.
IfSubClass Class
// IfProtocol is USB protocol code, as defined by the USB spe.c
IfProtocol uint8
Endpoints []EndpointInfo
// Endpoints has the list of endpoints available on this interface with
// this alternate setting.
Endpoints []EndpointInfo
}
// String returns a human-readable descripton of the particular
// alternate setting of an interface.
func (a InterfaceSetup) String() string {
return fmt.Sprintf("Interface %02x Setup %02x", a.Number, a.Alternate)
}
// ConfigInfo contains the information about a USB device configuration.
type ConfigInfo struct {
Config uint8
Attributes uint8
MaxPower uint8
// Config is the configuration number.
Config uint8
// SelfPowered is true if the device is powered externally, i.e. not
// drawing power from the USB bus.
SelfPowered bool
// RemoteWakeup is true if the device supports remote wakeup.
RemoteWakeup bool
// MaxPower is the maximum current the device draws from the USB bus
// in this configuration.
MaxPower Milliamperes
// Interfaces has a list of USB interfaces available in this configuration.
Interfaces []InterfaceInfo
}
// String returns the human-readable description of the configuration.
func (c ConfigInfo) String() string {
return fmt.Sprintf("Config %02x", c.Config)
}