harmony 鸿蒙Bluetooth Error Codes
Bluetooth Error Codes
NOTE
This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.
2900001
Error Message
Service stopped.
Description
The Bluetooth service is stopped, and the APIs related to the Bluetooth service cannot be called.
Possible Causes
The Bluetooth service fails to start.
Solution
Start the Bluetooth service.
2900003
Error Message
Bluetooth disabled.
Description
Bluetooth is disabled.
Possible Causes
Bluetooth is disabled.
Solution
Enable Bluetooth.
2900004
Error Message
Profile not supported.
Description
The profile is not supported.
Possible Causes
The profile is not supported by the device.
Solution
Check whether the device supports the profile. Use a profile supported by the device.
2900005
Error Message
Device not connected.
Description
The device is not connected to Bluetooth.
Possible Causes
The device pairing fails.
Solution
Turn on Bluetooth again to start the pairing process.
2900006
Error Message
The maximum number of connections has been reached.
Description
The number of connections reaches the maximum.
Possible Causes
The number of connections reaches the limit.
Solution
Check whether the number of paired devices exceeds the threshold.
2900007
Error Message
Asynchronous interface invoking timeout.
Description
The asynchronous call timed out.
Possible Causes
The remote device does not respond.
Solution
Try again after the timeout. If the local and remote devices are connected, disconnect them and try again.
2900008
Error Message
The value of proxy is a null pointer.
Description
pimpl or proxy is null.
Possible Causes
The device pairing fails.
Solution
Turn on Bluetooth again to start the pairing process.
2900010
Error Message
Resources have reached the upper limit.
Description
This error code is reported if resource usage reaches the upper limit.
Possible Causes
The application applies for too many resources.
Solution
Call the corresponding API to release resources.
2900099
Error Message
Operation failed.
Description
The operation failed.
Possible Causes
The profile is not supported by the device.
Solution
Perform this operation again.
2900100
Error Message
IPC failed.
Description
IPC data transmission fails.
Possible Causes
The input data is incorrect.
Solution
Check the input data.
2901000
Error Message
Read forbidden.
Description
The read operation is not allowed.
Possible Causes
The caller does not have the read permission.
Solution
Check whether the caller has the read permission.
2901001
Error Message
Write forbidden.
Description
The write operation is not allowed.
Possible Causes
The caller does not have the write permission.
Solution
Check whether the caller has the write permission.
2901054
Error Message
IO error.
Description
The I/O operation failed.
Possible Causes
The I/O transmission is abnormal.
Solution
Perform this operation again.
2902050
Error Message
Failed to start scan as Ble scan is already started by the app.
Description
This error code is reported if the attempt to enable scanning fails.
Possible Causes
BLE scanning has been enabled.
Solution
Check whether scanning is enabled.
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