gatt_client_read_long_characteristic_descriptor() function

Reads the long characteristic descriptor using its handle. It will be returned in several blobs. For each blob, a GATT_EVENT_CHARACTERISTIC_DESCRIPTOR_QUERY_RESULT event will be emitted. The GATT_EVENT_QUERY_COMPLETE event marks the end of read.

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Declaration

Definition

from gatt_client.h:793

uint8_t gatt_client_read_long_characteristic_descriptor(btstack_packet_handler_t callback, hci_con_handle_t con_handle, gatt_client_characteristic_descriptor_t * descriptor);

Implemented in gatt_client.c:2676

Arguments

Argument

callback

con_handle

descriptor

Return value

status ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER if no HCI connection for con_handle is found BTSTACK_MEMORY_ALLOC_FAILED if no GATT client for con_handle could be allocated GATT_CLIENT_IN_WRONG_STATE if GATT client is not ready ERROR_CODE_SUCCESS if query is successfully registered

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References

from examples

gatt_client_read_long_characteristic_descriptor() function

Syntax

Arguments

Return value

Examples

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