56162d0105
- I don't expect them to get much use, and reuse of BCD for USB spec version and device revision makes it somewhat confusing.
109 lines
3.5 KiB
Go
109 lines
3.5 KiB
Go
// Copyright 2013 Google Inc. All rights reserved.
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// Copyright 2016 the gousb Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package usb
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import (
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"fmt"
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)
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// #include <libusb.h>
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import "C"
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// Error is an error code returned by libusb.
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type Error C.int
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// Error implements the error interface.
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func (e Error) Error() string {
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return fmt.Sprintf("libusb: %s [code %d]", errorString[e], e)
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}
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func fromErrNo(errno C.int) error {
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err := Error(errno)
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if err == Success {
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return nil
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}
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return err
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}
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// Error codes defined by libusb.
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const (
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Success Error = C.LIBUSB_SUCCESS
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ErrorIO Error = C.LIBUSB_ERROR_IO
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ErrorInvalidParam Error = C.LIBUSB_ERROR_INVALID_PARAM
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ErrorAccess Error = C.LIBUSB_ERROR_ACCESS
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ErrorNoDevice Error = C.LIBUSB_ERROR_NO_DEVICE
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ErrorNotFound Error = C.LIBUSB_ERROR_NOT_FOUND
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ErrorBusy Error = C.LIBUSB_ERROR_BUSY
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ErrorTimeout Error = C.LIBUSB_ERROR_TIMEOUT
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ErrorOverflow Error = C.LIBUSB_ERROR_OVERFLOW
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ErrorPipe Error = C.LIBUSB_ERROR_PIPE
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ErrorInterrupted Error = C.LIBUSB_ERROR_INTERRUPTED
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ErrorNoMem Error = C.LIBUSB_ERROR_NO_MEM
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ErrorNotSupported Error = C.LIBUSB_ERROR_NOT_SUPPORTED
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ErrorOther Error = C.LIBUSB_ERROR_OTHER
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)
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var errorString = map[Error]string{
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Success: "success",
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ErrorIO: "i/o error",
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ErrorInvalidParam: "invalid param",
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ErrorAccess: "bad access",
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ErrorNoDevice: "no device",
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ErrorNotFound: "not found",
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ErrorBusy: "device or resource busy",
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ErrorTimeout: "timeout",
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ErrorOverflow: "overflow",
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ErrorPipe: "pipe error",
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ErrorInterrupted: "interrupted",
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ErrorNoMem: "out of memory",
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ErrorNotSupported: "not supported",
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ErrorOther: "unknown error",
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}
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// TransferStatus contains information about the result of a transfer.
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type TransferStatus uint8
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// Transfer status values provided by libusb.
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const (
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TransferCompleted TransferStatus = C.LIBUSB_TRANSFER_COMPLETED
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TransferError TransferStatus = C.LIBUSB_TRANSFER_ERROR
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TransferTimedOut TransferStatus = C.LIBUSB_TRANSFER_TIMED_OUT
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TransferCancelled TransferStatus = C.LIBUSB_TRANSFER_CANCELLED
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TransferStall TransferStatus = C.LIBUSB_TRANSFER_STALL
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TransferNoDevice TransferStatus = C.LIBUSB_TRANSFER_NO_DEVICE
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TransferOverflow TransferStatus = C.LIBUSB_TRANSFER_OVERFLOW
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)
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var transferStatusDescription = map[TransferStatus]string{
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TransferCompleted: "transfer completed without error",
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TransferError: "transfer failed",
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TransferTimedOut: "transfer timed out",
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TransferCancelled: "transfer was cancelled",
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TransferStall: "halt condition detected (endpoint stalled) or control request not supported",
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TransferNoDevice: "device was disconnected",
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TransferOverflow: "device sent more data than requested",
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}
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// String returns a human-readable transfer status.
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func (ts TransferStatus) String() string {
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return transferStatusDescription[ts]
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}
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// Error implements the error interface.
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func (ts TransferStatus) Error() string {
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return ts.String()
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}
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