harmony 鸿蒙Peripheral Management Module Changelog

2025-06-12
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Peripheral Management Module Changelog

cl.usbddk.1 Change in the USB_DDK/HID_DDK Error Code Definition

Access Level

Public API

Reason for Change

The existing error codes of the peripheral management module may affect user experience in the following scenarios:

Error codes are not defined. When an undefined error code is returned, no effective handling guide is available.
There is no mapping error for an error code, and the error code needs to be deprecated.

Therefore, the involved error codes need to be rectified.

Change Impact

This change is a non-compatible change.

Possible impacts:

After the definition of existing error codes is standardized, you need to verify the error codes again.
For existing undefined error codes, you need to add error code verification and handling measures.

USB error codes

Before Change	After Change
USB_DDK_SUCCESS = 0	Unchanged
USB_DDK_FAILED = -1	Deprecated
USB_DDK_INVALID_PARAMETER = -2	USB_DDK_INVALID_PARAMETER = 401
USB_DDK_MEMORY_ERROR = -3	USB_DDK_MEMORY_ERROR = 27400001
USB_DDK_INVALID_OPERATION = -4	USB_DDK_INVALID_OPERATION = 27400002
USB_DDK_NULL_PTR = -5	Deprecated
USB_DDK_DEVICE_BUSY = -6	Deprecated
USB_DDK_TIMEOUT = -7	USB_DDK_TIMEOUT = 27400004
USB_DDK_NO_PERM = 201	Added
USB_DDK_IO_FAILED = 27400003	Added

HID error codes

Before Change	After Change
HID_DDK_SUCCESS = 0	Unchanged
HID_DDK_NO_PERM = -6	HID_DDK_NO_PERM = 201
HID_DDK_INVALID_PARAMETER = -2	HID_DDK_INVALID_PARAMETER = 401
HID_DDK_FAILURE = -1	HID_DDK_FAILURE = 27300001
HID_DDK_NULL_PTR = -4	HID_DDK_NULL_PTR = 27300002
HID_DDK_INVALID_OPERATION = -3	HID_DDK_INVALID_OPERATION = 27300003
HID_DDK_TIMEOUT = -5	HID_DDK_TIMEOUT = 27300004

Start API Level

Change Since

OpenHarmony SDK 5.0.0.52

Key API/Component Changes

drivers/external_device_manager

Adaptation Guide

Developers do not need to perform additional adaptation. If specific error codes need to be verified, view the latest error code definition.

You are advised to verify the enum macros instead of the defined enum values when verifying the error codes.

The following is an example of verifying the error code for the HID permission error:

  //...
  int32_t ret;
  ret = OH_Hid_CreateDevice(hidDevice, hidEventProperties);
  if (ret == HID_DDK_NO_PERM) {
      // Handling for the permission error
  }