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SourceVuESP-IDF Framework and ExamplesESP-IDFble_gattc_read_long()

ble_gattc_read_long() function

Initiates GATT procedure: Read Long Characteristic Values.

Syntax

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Summary

Declaration

Definition

from ble_gatt.h:694

int ble_gattc_read_long(uint16_t conn_handle, uint16_t handle, uint16_t offset, ble_gatt_attr_fn *cb, void *cb_arg);

Implemented in ble_gattc.c:3413

Arguments

Argument

Description

conn_handle

The connection over which to execute the procedure.

handle

The handle of the characteristic value to read.

offset

The offset within the characteristic value to start reading.

The function to call to report procedure status updates; null for no callback.

cb_arg

The optional argument to pass to the callback function.

Return value

0 on success; nonzero on failure.

References

Code

Location

ble_gattc_read_long(uint16_t conn_handle, uint16_t handle, uint16_t offset,

ble_gattc.c:3414

int ble_gattc_read_long(uint16_t conn_handle, uint16_t handle, uint16_t offset,

ble_gatt.h:694

Call Tree

ble_gattc_read_long() calls 5 functions:

ble_gattc_read_long()

ble_gattc_log_read_long()

ble_gattc_read_long_tx()

ble_gattc_proc_alloc()

ble_gattc_proc_prepare()

ble_gattc_process_status()

Data Use

ble_gattc_read_long() reads 1 variable and writes 4 variables:

ble_gattc_proc::::read_long

ble_gattc_read_long()

ble_gattc_proc::::::handle

ble_gattc_proc::::::offset

ble_gattc_proc::::::cb

ble_gattc_proc::::::cb_arg

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