org.direct_bt.BTUtils Class Reference

Collaboration diagram for org.direct_bt.BTUtils:

Static Public Member Functions
static String	decodeUTF8String (final byte[] buffer, final int offset, final int size)
	Decodes the given consecutive UTF-8 characters within buffer to String. More...
static short	getHCIConnSupervisorTimeout (final int conn_latency, final int conn_interval_max_ms)
	Defining the supervising timeout for LE connections to be a multiple of the maximum connection interval as follows: More...
static short	getHCIConnSupervisorTimeout (final int conn_latency, final int conn_interval_max_ms, final int min_result_ms, final int multiplier)
	Defining the supervising timeout for LE connections to be a multiple of the maximum connection interval as follows: More...
static final String	toUUID128 (final String uuid16)
	Converts the given 4 digits uuid16 value to UUID128 representation. More...

Static Public Attributes
static final String	UUID128_BASE = "00000000-0000-1000-8000-00805f9b34fb"
	Base UUID128 used to express a UUID16, etc. More...

Detailed Description

Definition at line 29 of file BTUtils.java.

Member Function Documentation

toUUID128()

static final String org.direct_bt.BTUtils.toUUID128 ( final String  uuid16 )

static

Converts the given 4 digits uuid16 value to UUID128 representation.

Parameters

uuid16

the 4 characters long uuid16 value to convert

Returns

UUID128 representation if uuid16 is 4 characters long, otherwise UUID128_BASE.

Definition at line 40 of file BTUtils.java.

getHCIConnSupervisorTimeout() [1/2]

static short org.direct_bt.BTUtils.getHCIConnSupervisorTimeout ( final int  conn_latency, final int  conn_interval_max_ms, final int  min_result_ms, final int  multiplier  )

static

Defining the supervising timeout for LE connections to be a multiple of the maximum connection interval as follows:

 ( 1 + conn_latency ) * conn_interval_max_ms * max(2, multiplier) [ms]

If above result is smaller than the given min_result_ms, min_result_ms/10 will be returned.

Parameters

conn_latency	the connection latency
conn_interval_max_ms	the maximum connection interval in [ms]
min_result_ms	the minimum resulting supervisor timeout, defaults to 500ms. If above formula results in a smaller value, min_result_ms/10 will be returned.
multiplier	recommendation is 6, we use 10 as default for safety.

Returns

the resulting supervising timeout in 1/10 [ms], suitable for the BTDevice#connectLE(short, short, short, short, short, short).

See also

BTDevice::connectLE(short, short, short, short, short, short)

Definition at line 62 of file BTUtils.java.

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getHCIConnSupervisorTimeout() [2/2]

static short org.direct_bt.BTUtils.getHCIConnSupervisorTimeout ( final int  conn_latency, final int  conn_interval_max_ms  )

static

Defining the supervising timeout for LE connections to be a multiple of the maximum connection interval as follows:

 ( 1 + conn_latency ) * conn_interval_max_ms * max(2, multiplier) [ms]

If above result is smaller than the given min_result_ms, min_result_ms/10 will be returned.

• Using minimum resulting supervisor timeout of 500ms.
• Using multiplier of 10 as default for safety.

Parameters

conn_latency	the connection latency
conn_interval_max_ms	the maximum connection interval in [ms]

Returns

the resulting supervising timeout in 1/10 [ms], suitable for the BTDevice#connectLE(short, short, short, short, short, short).

See also

BTDevice::connectLE(short, short, short, short, short, short)

Definition at line 84 of file BTUtils.java.

decodeUTF8String()

static String org.direct_bt.BTUtils.decodeUTF8String ( final byte[]  buffer, final int  offset, final int  size  )

static

Decodes the given consecutive UTF-8 characters within buffer to String.

Definition at line 91 of file BTUtils.java.

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Member Data Documentation

UUID128_BASE

final String org.direct_bt.BTUtils.UUID128_BASE = "00000000-0000-1000-8000-00805f9b34fb"

static

Base UUID128 used to express a UUID16, etc.

Definition at line 33 of file BTUtils.java.

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The documentation for this class was generated from the following file:

• java/org/direct_bt/BTUtils.java