harmony 鸿蒙USB Error Codes

USB Error Codes

NOTE

This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.

Error Message

Permission denied. Need call requestRight to get permission.

Description

This error code is reported if a certain API of the USB module is called but the required permission is not granted.

Possible Causes

The permission to access the USB device is not granted.

Solution

Call requestRight to request for the permission to access the USB device.

Error Message

Permission denied.The HDC is disabled by the system.

Description

This error code is reported if HDC is disabled by the system.

Possible Causes

The USB debugging permission is not available.

Solution

Apply for the USB debugging permission.

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