btleDescriptorRead()
The function will try to read a descriptor from a service.
Synopsis
int btleDescriptorRead(int serviceId, string characteristicUUID, string uuid, mapping &data);
Parameters
| Parameter | Description |
|---|---|
| serviceId | The Id of the Service |
| CharacteristicUUID | The uuid of the characteristic. |
| uuid | The uuid of the descriptor. |
| data | The cached descriptor value. |
Return Value
Returns 0 on success. On error the return value is one of:
-1 ... illegal arguments passed
1 ... OperationError
4 ... UnknownError
6 ... DescriptorReadError
Description
The function will try to read a descriptor from a characteristic, given by its uuid, from the service, which must be connected by a call to btleServiceConnect().
When the descriptor was read, the mapping contains the data as described in the btleServiceConnect() key "descriptors".
Assignment
Mobile UI control functions
Availability
UI
See also
btleDescriptorWrite(), btleServiceConnect()
